Mold Tooling for Plastic Reel Flanges with Configurable Inserts
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The high cost associated with tooling for molded plastic reels is a significant drawback, as it requires expertise and is expensive, limiting the cost-effectiveness of producing reels with injection-molded flanges.
Innovation Solution
A tooling system comprising a first and second mold element, with insert recesses and blocks that can be configured to form different retention features, allowing for the production of flanges that can accommodate various core sizes without the need for multiple tooling sets, reducing the complexity and cost of manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If injection molding is used to manufacture flanges, then ease of manufacture and strength-to-cost ratio are improved, but tooling cost increases
Solution Approach 1:
The mold tool is designed with multiple insert recesses that can accommodate different inserts to create various core retention features. This allows a single mold tool to produce flanges for different core sizes and configurations, making the tool multi-functional and reducing the need for multiple specialized tools, thereby lowering overall tooling costs while maintaining injection molding advantages
2Adaptability or versatility
If multiple tooling sets are used for different core sizes, then adaptability is improved, but device complexity and tooling cost increase
Solution Approach 1:
The mold tool is segmented into a base mold structure and separate interchangeable inserts. Each insert can be configured to create different core retention features at different radial positions. This segmentation allows the same base mold to produce various flange designs by simply changing the insert, reducing tooling complexity while maintaining high adaptability to different core sizes
Solution Approach 2:
The base mold tool is designed with universal insert recesses that can accept multiple types of inserts. This universal design enables a single tool to produce flanges for different core sizes and retention feature configurations, eliminating the need for multiple specialized tooling sets and reducing overall device 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
This approach enables the efficient production of flanges that can be used with different core sizes using a single mold tool, reducing tooling costs and improving torque resistance, while maintaining the advantages of injection molding such as ease of feature inclusion and strength-to-cost ratio.
Implementation Method 1
performing injection molding using the first tool element and the second tool element
Data Source
AI summary
A method of molding a flange uses a first tool element and a second opposing tool element. The first tool element defines a negative of at least a portion of a first side of a flange, and the second tool element defines a negative of at least a portion of the second side of the flange. The method includes providing a set of blocks for insertion into a plurality of recesses in the second tool element, the set of blocks insertable in a plurality of configurations, each configuration defining a negative of a set of retention features on the second side of the flange. The plurality of configurations define differing configurations of retention features on the second side. The method also includes inserting at least some blocks into the second tool element to form a selected one of the plurality of configurations, and performing injection molding using the first tool element and the second tool element.