3D Shoe Manufacturing via Knitting and Vacuum Forming
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Solution Overview
Problem
The current manufacturing processes for shoes are inflexible and time-consuming, requiring multiple iterations from digital design to physical production, often resulting in material warping and distortion due to the need to project three-dimensional models into two-dimensional forms for processing, which hampers the ability to quickly respond to market trends and demands.
Innovation Solution
A method for manufacturing shoes that involves providing three-dimensionally pre-shaped components, which are then processed using an individually controllable sequence of steps, allowing for direct transformation of computer-generated models into three-dimensional products, including techniques like three-dimensional knitting, vacuum forming, and printing, with the option to add additional components and apply various finishes, all while being supported by a mounting device that corresponds to the shape of the component.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If three-dimensional models are projected into two-dimensional planes for processing, then manufacturing can be performed using conventional apparatuses, but material warping, buckling and distortions occur in the finished product
Solution Approach 1:
The patent applies three-dimensional knitting technology to create shoe components directly in 3D form, eliminating the need to project 3D models onto 2D planes. The knitting machine constructs the shoe upper as a three-dimensional knitted fabric that maintains the original digital model's geometry, preventing warping and distortion while enabling conventional manufacturing processes.
2Manufacturing precision
If manual sample making and multiple iterations are used, then design optimization can be achieved, but production time extends from several weeks to months
Solution Approach 1:
The patent replaces manual sample making with automated three-dimensional knitting machines controlled by computer-generated models. The digital design files directly drive the knitting process, eliminating manual intervention and iterative physical prototyping. This substitution of mechanical/manual processes with automated digital manufacturing reduces production time from weeks to days or hours while maintaining design quality through precise digital control.
Solution Approach 2:
The patent performs preliminary digital modeling and simulation using CAD/FEA systems before actual manufacturing. The three-dimensional knitted components are programmed and prepared digitally in advance, allowing design optimization to occur in the virtual domain before physical production. This preliminary digital action eliminates the need for multiple physical iterations, significantly accelerating the design-to-production timeline.
3Ease of manufacture
If conventional manufacturing processes are used, then production can be performed in existing factories, but the delivery chain becomes inflexible and slow to respond to market trends
Solution Approach 1:
The patent creates a universal three-dimensional knitting system that can produce various shoe designs, sizes, and configurations from digital models. The same knitting machine and process can be reprogrammed to manufacture different shoe types, enabling flexible production in response to market trends. This universal system can be deployed in existing factories or as localized production units, combining manufacturing capability with adaptability.
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 rapid, partially automated, and localized production of diverse shoe prototypes and series, allowing for customized and scalable manufacturing without the need for manual assembly, reducing production time and minimizing material distortion, thus enhancing the ability to quickly adapt to market demands.
Implementation Method 1
arranged on a mounting device which comprises a shape that at least partially corresponds to the three-dimensional pre-shape of the first shoe component
Data Source
AI summary
Described are methods for the manufacture of a shoe, an apparatus to perform such method, as well as a shoe manufactured by such method. According to certain examples, the method for the manufacture of a shoe includes providing a three-dimensionally pre-shaped first shoe component and processing the three-dimensionally pre-shaped first shoe component, wherein the processing includes an individually controllable succession of processing steps.