Automated Post-Tension Tendon Coiling and Tying System
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Solution Overview
Problem
Current methods for preparing post-tension tendons for concrete reinforcement lack automation in cutting, coiling, and tying, leading to inefficiencies and increased costs in processing and delivery to job sites.
Innovation Solution
An automated system comprising a frame, tendon feed device, coiler assembly, wire tying devices, and tendon ejector device that securely coils and ties tendons of varying diameters, enabling efficient cutting, coiling, and bundling of post-tension tendons for delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If automated coiling and tying systems are implemented, then productivity and processing efficiency are improved, but device complexity increases
Solution Approach 1:
The automated system is divided into distinct functional modules: a coiling mechanism with rotating arm, a separate cutting device, and an independent tying mechanism. Each module performs a specific operation on the tendon, allowing them to be designed, manufactured, and maintained independently while working together in sequence to achieve automated processing
Solution Approach 2:
The coiler assembly serves multiple functions: it guides the tendon through the coiling process, maintains proper tension during coiling, and positions the coiled tendon for subsequent cutting and tying operations. The frame structure provides both support and positioning for multiple operational components
2Device complexity
If manual coiling and tying methods are used, then device complexity is reduced, but loss of time and labor costs increase
Solution Approach 1:
The automated system enables continuous processing where the tendon moves sequentially through coiling, cutting, and tying operations without interruption. The rotating coiler arm continuously winds the tendon while the cutting and tying mechanisms operate in sequence, eliminating the downtime and transitions associated with manual method changes
3Manufacturing precision
If precise coiling within fixed volume is required, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The coiler employs a rotating arm that moves in a circular path to wind the tendon into a compact coil within a fixed volume defined by the circular skirt. The curved motion trajectory ensures uniform winding distribution and maintains consistent coil geometry, achieving precise coiling through geometric constraint rather than complex control mechanisms
Data Source
AI summary
An automated coiling system for post-tension tendons, comprising a frame, a tendon feed device adapted to introduce a tendon of widely varying length into a coiler assembly, a coiler assembly adapted to grip and coil the tendon within a fixed volume having a predefined diameter; a plurality of wire tying devices adapted to securely tie a wire around the tendon bundle of widely varying diameter in a plurality of predetermined positions and cut the wire after tying; and a tendon ejector device adapted to urge a tied tendon bundle from the coiler assembly.