Arrow Vane Rounded Edge Injection Molding Adhesion

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Solution Overview

Problem

Existing arrow vanes, particularly those made of synthetic materials, face challenges in achieving accurate guidance and secure adherence to the arrow shaft, with die-cut edges causing detachment issues and reduced durability.

Innovation Solution

A rounded vane design with injection-molded flange extensions and glue pockets provides improved adherence and stability by eliminating edges and enhancing attachment to the arrow shaft, allowing for smoother flight and increased durability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If die-cut processing is used to manufacture synthetic vanes, then manufacturing precision is improved, but reliability deteriorates due to edge interference with adherence and target contact causing vane removal

Engineering Contradiction:

Improvevane shape precisionVSAvoidvane attachment durability

Core Design Contradiction:

Manufacturing precisionVSReliability

Solution Approach 1:

The vane is designed with a rounded front end instead of sharp edges created by die-cutting. This curvature eliminates the harmful edges that catch on targets and interfere with adhesive bonding, while maintaining the aerodynamic guidance function of the vane during arrow flight.

Inventive Principle:

Principle #14Spheroidality (Curvature)

2Ease of manufacture

If synthetic materials are used for vanes, then ease of manufacture is improved, but reliability deteriorates due to poor adherence to the arrow shaft

Engineering Contradiction:

Improvevane production simplicityVSAvoidvane-to-shaft attachment

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The adhesive application parameters are optimized by creating a controlled gap between the rounded vane front end and the arrow shaft. This gap allows proper adhesive penetration and bonding, transforming the manufacturing process to achieve reliable attachment while maintaining the ease of synthetic material production.

Inventive Principle:

Principle #35Parameter changes

3Stability of the object's composition

If uniform vanes are required for arrow balance, then stability is improved, but ease of manufacture deteriorates due to difficulty in providing uniform feathers

Engineering Contradiction:

Improvearrow balanceVSAvoidvane uniformity production

Core Design Contradiction:

Stability of the object's compositionVSEase of manufacture

Solution Approach 1:

Injection molding parameters are optimized to produce synthetic vanes with consistent dimensions, rounded front ends, and uniform thickness. This manufacturing process transformation enables easy production of uniform vanes that maintain arrow balance, replacing the difficult feather uniformity requirement with straightforward plastic molding control.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS9039550B1Arrow vane

Publication Date: 2015.05.26 DU BRO PRODUCTS INC

AI summary

Each vane for an arrow is both tapered or rounded at the leading edge, and shaped to provide better adherence to the arrow. With the injection molding of each vane, a proper, rounded, smooth shape is achieved. When combined with a bottom surface of the vane having indentations therein, good adherence of the vane to the shaft of the arrow is achieved.