Orientable Blade Shear Cutting for Fibre Tape Contours
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Solution Overview
Problem
Existing shear-cutting systems for fibre strips result in material waste and increased production times due to 90° cuts, which are inefficient for adapting to complex part contours, leading to excess material and weight, and require subsequent trimming.
Innovation Solution
A shear cutting system with an orientable blade support that allows transverse cutting between a cutting blade and a counter blade, enabling orientation angles of 45°, 0°, and −45°, reducing material waste and production times by adapting to part contours through simultaneous rotation of both blades.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional 90° shear cutting is used, then the cutting process is simple and economical, but material waste increases and subsequent trimming is required
Solution Approach 1:
The blade support is made rotatable to change the cutting angle from fixed 90° to variable angles (45°, 0°, -45°), allowing the system to adapt to different part contours and eliminate material waste while maintaining cutting simplicity
Solution Approach 2:
The cutting angle parameter is changed from fixed 90° to variable angles by rotating the blade support, enabling optimal cutting orientations that match part contours and eliminate surpluses without complicating the cutting mechanism
2Loss of substance
If small width strips are used to reduce material waste, then material waste decreases, but production time increases due to higher number of passes
Solution Approach 1:
The rotatable blade support enables optimization of strip width and cutting angle combination, allowing use of wider strips with appropriate angle adjustments to maintain low material waste while reducing the number of passes and improving productivity
3Ease of operation
If 90° cut is used, then the cutting process is straightforward, but interior reinforcements cannot adapt to theoretical contour requiring excess material
Solution Approach 1:
The rotatable blade support enables dynamic adjustment of cutting angles to match specific part contours, allowing interior reinforcements to adapt precisely to theoretical contours without requiring excess material, while keeping the cutting process straightforward through automated rotation
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
Eliminates material waste and reduces production times while maintaining cutting reliability, allowing precise and efficient application of fibre strips without subsequent trimming, thus enhancing productivity.
Implementation Method 1
the cutting of the fibre tape is performed transversely with respect to the movement of the fibre tape by shearing between a cutting blade and a counter blade in a relative movement between said cutting blade and the counter blade
Implementation Method 2
orientation means for a support of the cutting blade configured for orienting the cutting blade according to a cutting angle selected for cutting the fibre tape
Data Source
AI summary
A shear cutting system for fibre tape taping machines in which the cutting of the fibre tape (1) is performed transversely with respect to the movement of the fibre tape (1) by shearing 5 between a cutting blade (2) and a counter blade (3) in an opposite relative movement between the cutting blade (2) and the counter blade (3), characterised in that it has orientation device for a blade support (4) of the cutting blade (2) configured for orienting the cutting blade (2) according to a cutting angle selected for cutting the fibre tape (1).