Drafting Unit Load Carrier with Reference-Guided Roller Positioning
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Solution Overview
Problem
Existing drafting units in textile machines face challenges in handling and maintenance due to unsatisfactory alignment of rollers, particularly when switching between different fiber types, leading to inconsistent clamping forces and handling difficulties.
Innovation Solution
A load-bearing structure with reference structures and calibration elements for precise positioning of rollers, allowing tool-free adjustment and replacement, and a spring mechanism for consistent clamping force application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the roller is movably mounted between rest position and loaded position with axis alignment in intermediate position, then the roller bodies have common contact area, but handling and maintenance become difficult
Solution Approach 1:
The drafting unit is divided into separate modular components: the roller assembly can be independently removed from the drafting unit by detaching the mounting, allowing easy handling and maintenance while maintaining precise positioning through the reference structure system
Solution Approach 2:
Reference structures are pre-established on both the load carrier and mounting components during manufacturing. These pre-defined geometric references enable precise roller positioning to be automatically achieved during assembly without requiring complex adjustment procedures, thus maintaining ease of operation
2Force
If the roller and counter-roller are pressed against each other in loaded position, then clamping force is applied, but positioning precision and adjustment become complex
Solution Approach 1:
The reference structures on the load carrier and mounting automatically guide the mounting into the correct position relative to the load carrier when assembled. This self-aligning mechanism ensures precise roller positioning without requiring complex external adjustment tools or procedures, maintaining both clamping force capability and positioning precision
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
Facilitates easy and precise positioning of rollers, reduces maintenance complexity, and ensures consistent clamping force for improved fiber handling and processing efficiency.
Implementation Method 1
A spring can be arranged in a spring holder (42) with the receptacle (39) and be designed to apply a defined load to a position of the roller (20) in the stretched state
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
The invention relates to a load carrier for upper rollers of a drafting unit of a textile machine, comprising at least one receptacle with a carrier for receiving at least one of the upper rollers. To improve the handling of a drafting unit and thus also of a corresponding spinning machine, the invention provides: - a first reference structure on the load carrier, and - a second reference structure on the at least one receptacle, wherein the first and second reference structures are designed and arranged to define the position of the at least one receptacle relative to the load carrier when the at least one receptacle is arranged adjacent to the first reference structure.