Coiling Swing Arm Geometry for Wide Metal Strip Thickness Range
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Solution Overview
Problem
Existing coiling devices are limited in their ability to coil metal strips across a wide thickness range, typically only capable of handling either thin, medium, or thick strips, but not simultaneously accommodating strips between 0.5 mm and 25 mm in thickness.
Innovation Solution
A coiling device configuration that includes a coiling swing arm with both front and rear pressure rollers and a flap drive system, allowing the upper duct flap to be positioned between the coiling mandrel and the front pressure roller for thin strips or upstream of the front pressure roller for thick strips, enabling adjustable geometry and effective deflection for medium strips as well.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a dedicated coiling device is built for each strip thickness range, then each device is optimized for its specific range, but the overall device complexity and quantity increase
Solution Approach 1:
The coiling device is designed with a universal configuration that can perform multiple functions: it can coil thin strips (0.5-1.2 mm) by positioning the upper duct flap between the coiling mandrel and front pressure roller, and coil thick strips (1.2-25 mm) by positioning the upper duct flap upstream of the front pressure roller, eliminating the need for separate dedicated coiling devices
Solution Approach 2:
The upper duct flap is made movable via a flap drive mechanism, allowing it to be positioned in different locations (between coiling mandrel and front pressure roller, or upstream of front pressure roller). This dynamic repositioning enables the same coiling device to adapt its geometry for handling both thin and thick metal strips across the full thickness range of 0.5-25 mm
Data Source
AI summary
A coiling device that includes a coiler (1) having a coiling mandrel (3) for coiling a metal strip, and a coiling swing arm (4) having front and a rear pressure rollers (5, 6) and a deflection plate (7). A swing arm drive (8) lines up the coiling swing arm (4) with the coiling mandrel (3) and is driven away from the coiling mandrel (3). An upper duct flap (9) upstream of the coiler (1) in the feed direction (x) guides the metal strip (2). A flap drive (10) positions the upper duct flap (9) such that, when the coiling swing arm (4) is lined up with the coiling mandrel (3), the upper duct flap is arranged between the coiling mandrel (3) and the front pressure roller (5) of the coiling swing arm (4) or is arranged upstream of the front pressure roller (5) of the coiling swing arm (4).