Spreader-feeder
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Solution Overview
Problem
Industrial laundry spreader/feeders face challenges in processing textiles of varying sizes due to differences in moisture retention and material properties, leading to improper stretching or tearing of textiles during the spreading process.
Innovation Solution
A textile spreader apparatus with two spread carriages that move in opposing directions, a catch mechanism, and sensors to detect the leading edge's pressure, allowing for adjustment of the spreading force to determine the optimal length of the textile without overstretching, using a controller to calculate and adjust the extended position based on the detected pressure threshold.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the spread force is increased to pull the textile flat, then the textile lays flat on the feeder, but the textile may rip or be improperly stretched
Solution Approach 1:
The patent implements dynamic adjustment of the spread carriage movement based on real-time feedback from force sensors. The control system continuously monitors the force applied to the textile and adjusts the spreading action accordingly, transitioning from a static fixed-position system to a dynamic adaptive system that responds to textile characteristics
Solution Approach 2:
The patent employs force sensors that provide real-time feedback on the force applied to the textile during spreading. This feedback loop allows the control system to detect when the textile is being overstretched and adjust the spread carriage movement to prevent damage, creating a closed-loop control system
2Strength
If the spread force is decreased to prevent textile damage, then the textile integrity is maintained, but the textile may not lay flat on the feeder
Solution Approach 1:
The system dynamically adjusts the spreading force and carriage movement based on real-time sensor feedback, allowing it to apply sufficient force to achieve flatness while preventing damage by reducing force when textile resistance indicates vulnerability
Solution Approach 2:
The patent changes the parameters of the spreading process dynamically, adjusting force magnitude, application rate, and duration based on textile characteristics detected by sensors, rather than using fixed spreading parameters for all textiles
3Manufacturing precision
If the spreader/feeder is designed for a specific textile size, then the spreading process is optimized for that size, but it cannot accommodate textiles of different sizes
Solution Approach 1:
The patent transforms a static fixed-position spreader into a dynamic system where the spread carriage position and movement are continuously adjusted based on real-time feedback from force sensors, enabling adaptation to various textile sizes and characteristics
Solution Approach 2:
The control system is designed to handle multiple textile types and sizes by using sensor feedback to automatically adjust spreading parameters, making the spreader versatile enough to process different textile varieties without requiring manual reconfiguration
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
Ensures that textiles are spread and transferred to the feed table without excessive stress, accommodating different sizes and materials, preventing damage and ensuring smooth processing.
Implementation Method 1
a sensor configured to detect when the catch intercepts the leading edge
Data Source
AI summary
A textile spreader apparatus, comprising: a first spread carriage and a second spread carriage, each configured to respectively receive opposing corners of a leading edge of a textile and to respectively convey the opposing corners in substantially opposing directions toward an extended position, such that the leading edge of the textile travels along a predetermined path; a catch arranged in the predetermined path of the leading edge, such that the catch intercepts the leading edge; and a sensor configured to detect when the catch intercepts the leading edge, wherein the catch is configured to retract from the path of the leading edge upon the sensor detecting a pressure applied to the leading edge, exceeding a threshold, wherein the threshold is reduced as the first spread carriage and the second spread carriage convey the opposing corners toward the extended position.