Roving Creel Synchronized Axles Continuous Supply
Solution Overview
Problem
The existing systems for managing fiberglass roving bobbins in polymer pellet production face issues such as frequent bobbin replacements, production interruptions, and waste due to uneven depletion, along with twisting of the roving that can lead to defects in molded parts.
Innovation Solution
A creel system with rotatable axles and synchronized drive mechanism that allows for stacking and continuous supply of multiple bobbins, counteracting twisting by synchronized rotation, and minimizing bobbin replacements through pre-loading and efficient roving distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple bobbins are stacked on a single axle, then bobbin replacement frequency is reduced and production continuity is improved, but the device complexity increases due to the need for synchronized drive mechanisms
Solution Approach 1:
Multiple bobbins are combined on a single shared axle, allowing them to rotate together as one unit. This merging approach enables continuous roving supply by stacking bobbins vertically, where the roving from each bobbin feeds into the next, eliminating the need for frequent axle replacements while using a unified rotation mechanism.
Solution Approach 2:
The drive mechanism is designed to universally rotate multiple axles simultaneously through a single driving force. The synchronized drive system uses a master axle or belt system that can drive multiple bobbins across different stacks, making one drive mechanism serve multiple functions and reducing overall system complexity despite handling many bobbins.
2Manufacturing precision
If bobbins are rotated during roving extraction, then roving twisting is counteracted and product quality is improved, but energy consumption increases due to the rotation requirement
Solution Approach 1:
The bobbins rotate automatically through self-service mechanisms where the extraction of roving itself drives the rotation. As roving is pulled from the bobbins, the differential diameter between inner and outer roving layers creates natural rotational torque, allowing the bobbins to rotate without requiring separate external rotation motors, thus minimizing additional energy consumption.
Solution Approach 2:
The rotation speed of each bobbin is dynamically adjusted based on its position in the stack and the amount of roving remaining. Bobbins rotate at varying speeds to maintain optimal roving tension and prevent twisting, with the rotation being continuously adapted rather than fixed, allowing energy-efficient operation that responds to real-time conditions.
Data Source
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AI summary
A creel (300), such as may be used to supply fiberglass roving to a production process, includes an enclosure (301) and a number of rotatable axles (302) held within the enclosure (301). Each of the axles (302) is of a shape and size to be inserted into a bobbin (101) of roving. The creel (300) also includes a drive mechanism (401) coupled to each of the plurality of rotatable axles (302), the drive mechanism (401) synchronizing the rotation of the axles (302). Bobbins (101) of roving may be stacked on the axles (302) and connected to provide continuous roving. As roving is drawn from the creel, the rate of rotation of the axles may be selected to counteract twisting of the roving that would otherwise result.