Textile Fabric Folding Apparatus with Oscillating Triangle Centring
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Prior art fabric doubling apparatuses for textile machines are complex in construction, difficult to assemble and maintain due to intricate centring systems and multiple independently controlled centring bars, and are bulky and heavy.
Innovation Solution
A simplified fabric doubling apparatus with a folding device comprising an adjustable oscillating isosceles triangle and contact bars, eliminating the need for complex centring systems and mobile lugs, integrated into a sewing machine for easy production and maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a complex centring system with optical cylinder and controlled mobile lugs is used, then fabric centring precision is improved, but device complexity and weight increase significantly
Solution Approach 1:
The patent removes the complex optical cylinder and controlled mobile lugs from the centring system, retaining only the essential mechanical centring bars that perform the core function of fabric positioning without the unnecessary complexity of electronic detection and active correction mechanisms
Solution Approach 2:
The patent replaces expensive, complex electronic centring systems with simple, inexpensive mechanical centring bars that are easier to manufacture, maintain, and replace, sacrificing advanced electronic control for practical simplicity
2Manufacturing precision
If two pairs of independently controlled centring bars with separate motors and transmissions are used, then edge alignment precision is improved, but ease of manufacture and maintenance deteriorate
Solution Approach 1:
The patent merges the two pairs of independently controlled centring bars into a single pair of centring bars controlled by one motor and transmission system, reducing the number of components while maintaining sufficient alignment capability for practical applications
Solution Approach 2:
The single pair of centring bars is designed to perform multiple functions: initial fabric positioning, edge alignment during folding, and coordination with the sewing device, replacing the need for specialized independent control systems for each function
3Measurement precision
If mobile lugs and complex centring systems are integrated into the sewing machine, then fabric handling precision is improved, but the overall machine dimensions and weight increase
Solution Approach 1:
The patent extracts and removes the mobile lugs and their associated complex control mechanisms from the sewing machine integration, keeping only the essential mechanical elements needed for fabric handling and centring functions
Solution Approach 2:
The patent uses simple mechanical centring bars that replicate the essential positioning function of complex electronic systems without requiring expensive sensors, motors, and transmissions, achieving sufficient precision through straightforward mechanical means
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A folding apparatus for textile machines comprises a main frame (3), means (4) for moving a fabric (6) which are operatively connected to the frame (3) for moving the fabric (6) in a first feed direction (A), a folding device (9) connected to the main frame (3) and operating on two edges (6b) of the fabric (6) for drawing them near each other and for folding the fabric (6) along a fold line (6c) which is substantially parallel with a second feed direction (B) set at an angle to the first feed direction (A).