Adjustable Tine Resin Regulator for Filament Winding
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Solution Overview
Problem
Existing filament winding processes for laminate production face challenges in maintaining constant laminate weight due to variable binder resin saturation, leading to increased production time and costs, as well as loss of expensive raw material from excess resin.
Innovation Solution
A binder resin regulator apparatus with adjustable tine sets that form a rectilinear or angular guide track for the thread, allowing controlled and adjustable scraping of excess resin, ensuring consistent resin distribution and minimizing waste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the fibre thread is pulled through a fixed scraper die or passive scraper to remove excess binder resin, then the scraping function is simple and reliable, but the binder resin loss increases and manufacturing precision deteriorates when thread speed, temperature or thread quality changes
Solution Approach 1:
The patent applies the dynamics principle by making the scraper active and adjustable rather than fixed and passive. The scraper can be moved towards or away from the fibre thread, and its angle relative to the thread can be changed, allowing the scraping action to adapt dynamically to variations in thread speed, temperature, and resin viscosity, thereby maintaining consistent laminate weight while preserving scraping reliability
Solution Approach 2:
The patent implements parameter changes by allowing adjustment of the scraper's position and orientation parameters. The scraper's distance from the thread and its angular position can be modified to optimize the scraping effect under different operating conditions, enabling consistent binder resin removal despite changes in thread speed, temperature, or resin properties
2Manufacturing precision
If the rotational speed of the mandrel is adjusted to maintain constant filament amount on conical mandrel, then the filament distribution is maintained, but the production time increases and productivity decreases
Solution Approach 1:
The patent applies parameter changes by enabling dynamic adjustment of the scraper parameters (position and angle) to compensate for variations in filament distribution. This allows the system to maintain consistent filament laydown on conical mandrels without requiring slow rotational speed adjustments, thereby preserving both manufacturing precision and productivity
3Strength
If the fibre thread becomes saturated with binder resin to prevent dry portions, then the laminate strength is improved, but the binder resin loss increases and manufacturing cost increases
Solution Approach 1:
The patent implements parameter changes by allowing precise control of the scraper's position and angle to optimize the amount of excess resin removed. This enables the fibre thread to become adequately saturated with binder resin for strong laminate formation while minimizing unnecessary resin loss, thus improving the ratio of useful resin to wasted resin
Data Source
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AI summary
Apparatus (10) arranged to control a quantity of binder resin that is carried by a thread (99), the apparatus (10) comprising at least one first tine row (111) being arranged parallel and displaceably to at least one second tine row (122), wherein a guide track for the thread (99) is formed transversely to the tine rows (111, 122) and a displacement of at least one tine row (111, 122) changes the guide track. A method for controlling the quantity of binder resin by using tines (101) is described as well.