Pivoting Guide Arms for Corespun Yarn Lapping
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Solution Overview
Problem
Current guide devices for lapping yarns face challenges in handling and adjusting filament guide rollers, particularly in achieving precise periodic lateral movement to reduce local wear and ensure alignment, as they often suffer from lateral play and lack automated mechanisms for varying the filament movement trajectory.
Innovation Solution
A high-precision guide device with reciprocating movement, where guide rollers are mounted on independent arms connected to a single support via a resilient arm or spring, allowing for precise adjustment and alignment, and enabling integration with existing automated systems by using a common rail for both rollers and roving guides, which reduces lateral drift and facilitates automatic reciprocating movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If guide rollers are mounted on independent arms with conventional adjustment mechanisms, then manual handling and adjustment is possible, but lateral play occurs and precision is reduced
Solution Approach 1:
The guide rollers are mounted on arms that can reciprocate automatically along the rail, transforming from a static manual adjustment system to a dynamic automated system. This allows the rollers to move periodically to vary the point of incidence and reduce local wear while maintaining precision through controlled movement.
Solution Approach 2:
The conventional manual mechanical adjustment system is replaced with an automated reciprocating mechanism that moves the guide rollers along the rail. This substitution eliminates manual handling errors and lateral play while maintaining ease of operation through automated control.
2Manufacturing precision
If a single support carries both roving guides and roller supports, then lateral drift is reduced and alignment is improved, but device complexity increases
Solution Approach 1:
The roving guides and roller supports are merged into a single integrated rail support structure. This consolidation provides a common reference frame that eliminates lateral drift between components while the modular rail design keeps the overall structure simple and manageable.
Solution Approach 2:
The single rail support serves multiple functions: it carries the roving guides, supports the roller carrying arms, provides a reference frame for alignment, and enables automated reciprocating movement. This multi-functionality reduces the need for separate structures while maintaining precision.
3Adaptability or versatility
If resilient arm or spring is used to connect assembly to fixed part, then adaptability to automated movement systems is improved, but structural rigidity is reduced
Solution Approach 1:
The resilient connection is applied locally at specific points where automation interfaces are needed, rather than throughout the entire structure. This allows the assembly to be adaptable to automated movement systems while the majority of the structure maintains its rigidity for precise alignment.
Solution Approach 2:
The resilient arm or spring allows controlled flexibility in specific parameters (position adjustment, movement absorption) while maintaining overall structural integrity. This enables adaptation to automated systems through controlled parameter changes without compromising the strength needed for precise lapping operations.
4Reliability
If periodic lateral movement of guide devices is implemented, then local wear is reduced, but achieving precise movement is difficult
Solution Approach 1:
The rail acts as an intermediary guide that enables precise periodic lateral movement of the roller carrying arms. The rail provides a controlled path that ensures accurate reciprocating motion, allowing the system to achieve both wear reduction through movement and precision through the guided trajectory.
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 ensures precise alignment and stable positioning of yarns, reduces manual handling costs, and eliminates errors in filament movement, providing a reliable and efficient lapping process with reduced wear and increased precision across various spinning systems.
Implementation Method 1
said single support being connected by a support to a resilient arm or spring which will be incorporated, by a support and an upper clamp, in a rod or fixed tubular component of the spinning machine
Data Source
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AI summary
The device comprises a set of separate, adjacent pivoting arms (5,5',3,3') for each adjacent guide roller (1,1') for lapping filaments, said arms (5,5',3,3') being mounted with independent rotation capability and stable positioning at variable angles, on a support (8) which is fixed adjustably on a single rail (10) on which are also fixed the roving guides, also adjustably, said support (8) being connected to a fixed part of a spinning machine, by means of a resilient arm (17) provided with flexion capability in a horizontal plane.