Compression Cutting Shoe Inserts With Adjustable Jig Alignment
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Solution Overview
Problem
Existing methods for producing shoe insoles and inserts struggle with achieving different thicknesses and precise edges, leading to discomfort and inefficiencies in mass production, particularly when trying to create functionalized insoles with varying thicknesses that match the foot's contours.
Innovation Solution
A method involving compression cutting using a template with adjustable jig alignment on a movable table, allowing for simultaneous production of shoe inserts with different thicknesses by ensuring uniform compression and cutting across multiple cavities, utilizing a band knife and inclined compression treadmill.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If die cutting is used to produce shoe insoles, then mass production is enabled, but the thickness of the resulting product is the same as the material thickness, preventing production of functionalized insoles with different thicknesses
Solution Approach 1:
The insole is divided into multiple zones with different thickness requirements (heel, forefoot, midfoot areas). The die cutting process incorporates a die with varying depth cavities that segment the single material sheet into multiple thickness zones simultaneously, enabling functionalized insoles with different thicknesses while maintaining mass production capability
Solution Approach 2:
The invention transitions from two-dimensional die cutting to three-dimensional die cutting by incorporating depth variation in the die cavities. This adds the thickness dimension to the traditional planar die cutting process, allowing production of insoles with varying thicknesses (e.g., thicker heel and forefoot areas, thinner midfoot areas) from a single material sheet
2Adaptability or versatility
If injection molding is used to produce insoles with different thicknesses, then three-dimensional shape production is enabled, but the production process becomes complicated requiring multiple steps and limited material choices
Solution Approach 1:
The invention extracts the thickness variation function from the complex injection molding process and integrates it directly into the die cutting process. By incorporating varying depth cavities in the die, the thickness variation is achieved during the single die cutting operation rather than requiring separate molding and machining steps, thereby simplifying the overall production process
Solution Approach 2:
The invention changes the physical parameter of the die structure by incorporating cavities with different depths. This parameter change in the die geometry allows the same die cutting process to produce insoles with varying thicknesses, eliminating the need for complex injection molding processes and limited material choices
3Adaptability or versatility
If injection molding is used, then insoles with different thicknesses can be produced, but the polymer materials have limited properties such as self-adhesion and dust accumulation issues
Solution Approach 1:
The invention changes the material selection parameter from injection molding polymers to elastic materials with superior adhesion properties. The die cutting process allows use of elastic materials that provide better sweat absorption, shock absorption, and adhesion to shoe insoles without the self-adhesive dust accumulation problems of injection molding polymers
4Adaptability or versatility
If compression cutting with template is used, then different thicknesses can be achieved, but the alignment precision between multiple cavities deteriorates without adjustable jig
Solution Approach 1:
The invention introduces dynamic adjustability to the jig system, allowing the template to be repositioned and realigned during the compression cutting process. This dynamic adjustment capability ensures precise alignment between multiple cavities in the template, maintaining manufacturing precision while enabling thickness variation through the compression process
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 mass production of high-quality shoe inserts with precise edges and varying thicknesses, ensuring comfort and alignment with shoe insoles, while simplifying the process and reducing production time by eliminating the need for frequent adjustments.
Implementation Method 1
compressing said elastic material into the jig cavities formed by moving the table with the jig and elastic material under a stationary inclined compression treadmill
Implementation Method 2
cutting the elastic material with a band knife
Data Source
Figure 1
Figure 2
Figure 3A
AI summary
The invention relates to a method for the mass production of shoe inserts with different thicknesses by compression cutting, said method comprising the steps of: i) using a mobile table carrying a gauge including more than one cavity having a particular shape; ii) securing the gauge on the mobile table using fastening devices; iii) placing the elastic material to be cut on the gauge; iv) compressing the elastic material into the cavities formed in the gauge by moving the table with the gauge and the elastic material under a fixed, inclined compression conveyor belt; cutting the elastic material with a belt knife; characterised in that said method further comprises the step of adjusting the horizontal alignment of the gauge on the mobile table using adjustment devices.