Helical Tube Winding Lubrication for Precision Control
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Solution Overview
Problem
Existing systems for producing helically wound tubes, such as drinking straws, face issues with the smoothness and accuracy of the winding process around a mandrel.
Innovation Solution
Incorporating a lubrication device with a rotatable lubrication member and a controller to apply a controlled layer of lubrication material on the strips before winding, adjusting the rotation direction and speed to optimize the winding process, ensuring smoother and more accurate helical winding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If strips are helically wound around the mandrel to form tubes, then tube production is achieved, but the winding smoothness and accuracy deteriorate
Solution Approach 1:
A lubrication member with a lubrication material layer is introduced as an intermediary between the strip and the mandrel during winding. The lubrication member rotates and applies lubrication material to the contact side of the strip, reducing friction and improving both winding smoothness and accuracy without requiring changes to the fundamental winding process
Solution Approach 2:
The system changes the surface properties of the strip by applying a lubrication material layer, modifying the friction characteristics. The lubrication controller dynamically adjusts the rotational speed of the lubrication member to optimize the lubrication effect, thereby improving winding precision and smoothness through parameter control
2Manufacturing precision
If a lubrication device is added to improve winding smoothness and accuracy, then winding quality is improved, but device complexity increases
Solution Approach 1:
The lubrication member serves multiple functions: it applies lubrication material to the strip, controls the lubrication quantity through rotational speed adjustment, and can be integrated into the existing winding system architecture. The single lubrication device handles both lubrication application and control functions, avoiding the need for multiple separate components
Solution Approach 2:
The lubrication member rotates and applies lubrication material automatically as the strip passes through, with the lubrication controller dynamically adjusting parameters based on process conditions. The system self-regulates the lubrication application without requiring manual intervention, simplifying operation despite the added complexity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system achieves improved smoothness and accuracy in the helical winding of strips around the mandrel, enhancing the production of lengths of tube like drinking straws.
Implementation Method 1
the lubrication member has a cylindrical outer surface made from the lubrication material and defining a cylinder axis, which cylindrical outer surface is in contact with the contact side of one or more of the at least one strip of the selection
Implementation Method 2
apply a layer of lubrication material on the contact side of the at least one strip of the selection
Data Source
AI summary
A system comprising a mandrel, a winding device for helically winding strips around the mandrel to form a base tube moving away from the mandrel at a tube speed, a strip suppling device for supplying the strips to the winding device, and a cutting device for cutting the base tube at a predetermined length to form the lengths of tube while the base tube is moving in a tube direction at the tube speed, and a method.