Textile Compressor Unit Spaced Bearing Surfaces
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Solution Overview
Problem
Existing compression units for textile drafting systems face challenges in maintaining adequate contact with the bottom roller due to vibrations and oscillations, leading to impaired compression effects, and require complex and costly manufacturing processes for precise bearing surfaces.
Innovation Solution
The design incorporates two spaced-apart bearing surfaces that can be brought into contact with the drafting system roller, allowing for secure positioning and reduced manufacturing effort, with concave or convex curvature adapted to the roller's surface for precise sealing and stability, and the use of wear-resistant components for durability and ease of production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the bearing surface is extended laterally beyond the covers of the top rollers to enlarge the contact surface, then the contact stability between the compressor unit and the bottom roller is improved, but the manufacturing effort and complexity increase greatly
Solution Approach 1:
The bearing surface is divided into multiple discrete bearing surfaces (first, second, third bearing surfaces) spaced apart from each other. This segmentation allows each surface to be smaller and easier to manufacture while collectively providing sufficient contact stability through distributed contact points with the bottom roller.
Solution Approach 2:
Instead of uniformly enlarging the entire bearing surface, the invention applies bearing surfaces only at specific locations where contact with the bottom roller is needed. The bearing surfaces are positioned to contact the bottom roller at multiple points along the compression channel, providing local contact stability without requiring a large continuous surface.
2Manufacturing precision
If the bearing surface is made very precisely to ensure adequate contact, then the positioning accuracy of the compressor unit is improved, but the manufacturing cost and effort increase
Solution Approach 1:
The bearing surface is segmented into multiple smaller bearing surfaces. Each individual bearing surface requires less manufacturing precision than a single large surface, as minor imperfections in one segment do not affect the others. The cumulative effect of multiple precisely positioned but smaller surfaces achieves the required overall positioning accuracy.
Solution Approach 2:
Instead of making the entire bearing surface highly precise, the invention applies precision only to the specific areas where contact occurs (the discrete bearing surfaces). The non-contact areas of the compressor unit can be manufactured with lower precision, reducing overall manufacturing effort while maintaining adequate contact precision.
3Area of stationary object
If a single large bearing surface is used to ensure adequate contact, then the contact area is sufficient, but the compressor unit cannot be lifted off the roller and manufacturing complexity increases
Solution Approach 1:
The bearing surface is divided into multiple discrete bearing surfaces spaced apart from each other. This segmentation maintains sufficient total contact area with the bottom roller while allowing the compressor unit to be structurally simpler and potentially removable, as each segment is independent and does not require a continuous large surface structure.
Solution Approach 2:
Instead of increasing the bearing surface area in a single dimension (creating a large continuous surface), the invention distributes the contact area across multiple dimensions by spacing multiple smaller bearing surfaces apart from each other along the compression channel, achieving sufficient contact area without requiring a large monolithic structure.
Data Source
AI summary
The invention relates to a compressor unit provided for a drawing frame of a textile machine, containing at least one compressor channel (14) for a finished drawn fiber composite. The compressor unit contains a first contact surface (131) for positioning the compressor unit on a drawing frame roller (3). The contact surface is disposed in the region of the compressor channel. The compressor channel is open toward the contact surface. The compressor unit contains at least one further contact surface (133) for the drawing frame roller, located at a distance from the first contact surface in the circumferential direction of the drawing frame roller, in the region of the compressor channel.