Helical Winding Apparatus for Continuous Tubular Structures
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Solution Overview
Problem
Existing methods for manufacturing helically wound tubular structures, such as pipes, face challenges including high energy consumption, slow processing speeds, and the need for mechanical deformation or rotation, which limits the production of long sections without joints, and result in compromised structural integrity due to adhesive peel forces.
Innovation Solution
An apparatus featuring a faceplate with diameter defining rollers and shaping rollers, driven by actuators and gearing assemblies, allows for precise control of strip bending and adhesive application to form tubular structures with improved mechanical integrity and reduced energy consumption, enabling continuous production without the need for rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mechanical deformation is used to lock the strip in place, then the strip is retained securely on the structure, but the energy consumption increases and processing speed decreases
Solution Approach 1:
The patent replaces the traditional mechanical deformation locking system with a system that uses controlled elastic deformation and geometric interlocking through specially shaped rollers. The strip is formed into a C-section or similar profile that mechanically interlocks with adjacent layers without requiring high-force deformation, thus reducing energy consumption while maintaining retention reliability.
Solution Approach 2:
The invention changes the deformation parameters from plastic deformation to elastic deformation, and controls the degree of deformation through adjustable roller gaps. This allows the strip to be retained securely through elastic recovery forces while enabling faster processing speeds since elastic deformation is less energy-intensive and reversible.
2Strength
If edge deformation is used to lock the strip, then the strip stays together, but the force required is significant and energy consumption is high
Solution Approach 1:
The patent changes the bonding mechanism from relying on high-force plastic deformation to using controlled elastic deformation parameters. The adjustable roller gaps allow precise control of the deformation magnitude, creating sufficient bonding strength through elastic recovery without requiring excessive deformation forces.
Solution Approach 2:
The invention uses curved or shaped rollers that impart a specific geometric profile (such as C-section) to the strip edges. This geometric shaping creates mechanical interlocking between adjacent strip layers, providing bonding strength through shape complementarity rather than relying solely on deformation force.
3Shape
If the product is rotated during forming, then the strip can be wound helically, but the production of long sections without joints is limited
Solution Approach 1:
Instead of rotating the product during forming, the patent inverts the approach by using a stationary or slowly moving product while the forming rollers move along the strip length. This allows continuous helical winding to be achieved without the constraints of product rotation, enabling production of much longer continuous sections without joints.
Solution Approach 2:
The invention introduces dynamic adjustment capabilities where the roller positions and angles can be adjusted during the forming process to maintain proper helical geometry. This dynamic control allows the system to adapt to long continuous sections while maintaining the required helical shape, overcoming the limitations of fixed rotation-based systems.
4Shape
If adhesive is used to maintain strip shape, then the strip retains its form, but adhesive peel forces compromise structural integrity and pressure capacity
Solution Approach 1:
The patent replaces the adhesive-based form retention system with a mechanically-based system using shaped rollers that create geometric interlocking profiles. The strip edges are formed into shapes (such as C-sections) that mechanically interlock with adjacent layers, providing form retention through mechanical means rather than adhesive bonding, thereby eliminating peel forces and improving structural integrity.
Solution Approach 2:
The invention creates a composite structure where the strip layers are mechanically interlocked through geometric profiling. The combination of elastic deformation and geometric interlocking creates a composite-like behavior where multiple layers work together structurally without relying on adhesive bonding, enhancing overall structural integrity and pressure capacity.
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 apparatus enables efficient, high-speed manufacturing of tubular structures with enhanced structural integrity by controlling the radius of curvature and reducing adhesive peel forces, allowing for longer continuous sections without joints, thus improving the pressure capacity and reducing production costs.
Implementation Method 1
diameter defining rollers, mounted on said faceplate for causing the strip material to bend to a predetermined diameter prior to being formed into a tubular structure
Implementation Method 2
bending a strip of material into a helical form by plastic deformation thereof
Data Source
AI summary
An apparatus (50) for and method of manufacturing helically wound tubular structures (116) includes a rotating faceplate (74) upon which are mounted a plurality of diameter defining rollers (78) which, in operation, cause a strip material (80) to be plastically deformed into a helical winding which may be lain down in abutting or self-overlapping relationship to form said tubular structure (116).