Coil Packaging System With Dual Robotic Arms
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Solution Overview
Problem
Existing coil packaging systems for wrapping coils of steel strip are large, heavy, and costly due to their complex design and requirement for sensing systems to coordinate robotic arms, making them difficult to implement and operate efficiently.
Innovation Solution
A compact coil packaging system with two robotic arms, each movable along specific horizontal axes, allowing for the transfer of wrapping material without the need for complex coordination systems, and adjustable to accommodate various coil sizes and shapes, using existing technology to simplify and reduce costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional coil packaging system with large robotic arms and sensing systems is used, then the wrapping function is achieved, but the system becomes large, heavy, and expensive
Solution Approach 1:
The system divides the wrapping function into two separate robotic arms, each responsible for one end of the coil. This segmentation allows each arm to be smaller and lighter while collectively achieving the complete wrapping function, resolving the contradiction between reliability and system weight.
Solution Approach 2:
The robotic arms travel around both ends of the coil in opposite directions, utilizing the spatial dimension around the coil rather than requiring large horizontal movement space. This dimensional approach allows compact system design while maintaining wrapping reliability.
2Manufacturing precision
If large devices and sensing systems are used for coordinating robotic arms, then the wrapping coordination is accurate, but the system complexity and cost increase
Solution Approach 1:
The two robotic arms are designed to travel in opposite directions around the coil ends, creating an asymmetric but coordinated motion pattern. This asymmetric design simplifies the coordination logic compared to symmetric systems, reducing device complexity while maintaining wrapping precision.
Solution Approach 2:
The system uses the coil's own rotation to naturally coordinate the wrapping process. As the coil rotates on variable-speed rollers, it automatically presents different sections to the robotic arms, eliminating the need for complex sensing and coordination systems to track coil position.
3Adaptability or versatility
If the robotic arms are movable along multiple axes with sensing systems, then the adaptability to different coil sizes is improved, but the system size and cost increase
Solution Approach 1:
The system employs variable-speed coil rollers that can dynamically adjust rotation speed to accommodate different coil sizes and wrapping requirements. This dynamic adjustment capability provides adaptability without requiring large mechanical movement ranges, reducing the system's stationary area.
Solution Approach 2:
The robotic arms are designed with universal gripping mechanisms that can handle wrapping material of different heights and coil configurations. The arms can grip the wrapping material at different positions and adapt to various coil diameters, providing versatility without increasing system footprint.
Data Source
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AI summary
Disclosed is a coil packaging system (100). The system comprises a first robot arm (110) having a grappling portion (112) adapted to grip a wrapping material (114), a second robot arm (120) having a grappling portion (122) adapted to grip the wrapping material (114), and a coil rotating means (140) adapted to carry and rotate a coil (150) about a coil axis. The first robot arm (110) is movable along a first horizontal axis (A1) which, in an operating position, coincides with the coil axis, while the second robot arm (120) is movable along a second horizontal axis (A2), the second horizontal axis (A2) being parallel to the first horizontal axis (A1), and along a third horizontal axis (A3), the third horizontal axis (A3) being perpendicular to the second horizontal axis (A2).