Multi-Part Mold Assembly for Sock Liner Shaping and Cutting
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Solution Overview
Problem
Conventional mold manufacturing processes for articles like sock liners require multiple steps, involving contouring and subsequent cutting, which are inefficient and prone to errors due to multiple forces and material transportation between processing stations.
Innovation Solution
A multi-part mold assembly comprising an upper mold portion, a lower mold portion, and a base portion, with integrated or removable cutting edges, and vertical channels for springs to apply forces for contouring and cutting in a single continuous operation, eliminating the need for separate trimming steps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple processing steps (contouring then cutting) are used to manufacture articles, then the manufacturing process can achieve the desired shape and trim excess material, but the process efficiency decreases and error probability increases due to multiple forces and material transportation
Solution Approach 1:
The patent combines contouring and cutting operations into a single integrated mold assembly. The upper and lower mold portions each have both contouring surfaces and cutting edges, allowing both shaping and trimming to occur simultaneously in one operation, eliminating the need for separate processing steps and material transportation.
2Manufacturing precision
If multiple processing steps are used, then the article can be contoured and trimmed, but the process is prone to error due to multiple forces applied to the material
Solution Approach 1:
By integrating both contouring and cutting functions into a single mold assembly operation, the patent applies only one set of forces to the material at one time. The upper and lower mold portions work together simultaneously to shape and trim the article, eliminating the cumulative errors that would result from applying multiple separate forces in sequential operations.
3Ease of manufacture
If separate contouring and cutting operations are performed, then each operation can be optimized independently, but the overall manufacturing complexity increases
Solution Approach 1:
The patent integrates contouring and cutting into a single mold assembly with a specific structure: upper and lower mold portions, each containing both contouring surfaces and cutting edges. This integrated structure, while mechanically unified, maintains functional clarity where each mold portion performs both shaping and trimming operations simultaneously, reducing overall process complexity despite the sophisticated mold design.
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 enhances efficiency by reducing processing steps and minimizing waste, allowing for precise contouring, shaping, and cutting of articles like sock liners in a single operation, improving the consistency and quality of the manufacturing process.
Implementation Method 1
at least one spring positioned within a vertical channel of the lower mold portion
Data Source
AI summary
Aspects hereof relate to a multi-part mold assembly for use in manufacturing articles. The mold assembly provides for contouring, shaping and cutting materials to form articles via a continuous single processing operation. The mold assembly includes an upper mold portion with a three-dimensional contouring/shaping portion and a first cutting edge, a lower mold portion with a three-dimensional contouring/shaping portion and a second cutting edge, and a base portion into which the lower mold portion may retract during use. Upon application of a first force, the upper and lower mold portions cooperate to contour/shape a material from which an article is to be formed. Upon application of a second force greater than the first, the first cutting edge and the second cutting edge interact to shear the material that extends beyond the respective cutting edges. The result is an article that is contoured, shaped and cut/trimmed utilizing a single processing operation.