Magnetic Spacer Guiding Device for Sanitary Thread Application
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Solution Overview
Problem
Existing guiding devices for producing sanitary articles face issues with wear and maintenance, requiring frequent lubrication and leading to incorrect thread application, while solutions like aerostatic shoes are energy-intensive and costly.
Innovation Solution
A guiding device using a magnetic spacer assembly to create a gap between moving and fixed bodies, employing magnetic forces for precise movement and air dispensers to prevent contamination, eliminating the need for aerostatic shoes and reducing energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a linear guide with carriage is used for guiding the thread, then the thread can be applied along a specific path, but the wheels or balls of the carriage and the surface of the linear guide wear out significantly requiring frequent maintenance and lubrication
Solution Approach 1:
The patent replaces the mechanical contact-based linear guide and carriage system with a magnetic field-based guiding system. The thread-carrying tool is equipped with a magnet that interacts with a magnetic guide structure, eliminating physical contact between moving parts and thus preventing wear of wheels, balls, and guide surfaces while maintaining precise thread application along the desired path.
2Object-affected harmful factors
If aerostatic shoes are used to generate an air cushion, then contamination between the carriage and linear guide is prevented, but energy consumption increases and a dedicated air supply system is required
Solution Approach 1:
The patent substitutes the pneumatic aerostatic shoe system with a magnetic field-based non-contact guiding system. The magnetic interaction between the magnet on the thread-carrying tool and the magnetic guide structure provides both positioning and contamination protection without requiring compressed air supply, thereby eliminating the associated energy consumption and system complexity.
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 enables precise, stable, and high-speed thread application with reduced maintenance, achieving reproducible entrapment patterns and overcoming wear-related issues while being energy-efficient and compact.
Implementation Method 1
a magnetic spacer assembly spaced apart the first body from the second body by means of a magnetic force
Implementation Method 2
a magnetic movement assembly associated with the first body and with the second body to move the first body along a linear direction by means of another magnetic force
Data Source
AI summary
A guiding device of an apparatus for producing sanitary articles for applying at least one thread onto a substrate intended for producing these sanitary articles, in which said guiding device is able to guide the thread quickly, accurately, and stably without being subject to wear and contamination problems, while ensuring reduced energy consumption. The present invention also relates to a method for applying a thread onto a substrate intended to produce sanitary articles.