Deformable Plate Pressing for Waterproof Sheath Bonding
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Solution Overview
Problem
Existing processes and machines for waterproofing semimanufactured footwear and clothing items are not suitable for large-scale industrial applications due to low automation and high manufacturing costs.
Innovation Solution
A machine with deformable plates and a waterproofing sheath with a thermoactivable glue pattern, allowing for automated production, featuring pneumatic movement and safety features to enhance productivity and reduce costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If traditional waterproofing processes are used, then waterproofing can be achieved, but automation is low and manufacturing costs are high
Solution Approach 1:
The deformable plates are designed to automatically adapt to the three-dimensional shape of the semimanufactured product through elastic deformation, eliminating the need for complex adjustment mechanisms. The plates self-adjust to conform to the product geometry, enabling automated operation while reducing manufacturing complexity and cost.
Solution Approach 2:
The waterproofing sheath incorporates a thermoactivable glue pattern that changes its physical state in response to temperature changes during the pressing operation. This parameter change enables the glue to activate and bond the waterproofing layer without requiring complex application mechanisms, facilitating automation while keeping manufacturing costs low.
2Reliability
If semimanufactured products with three-dimensional conformation are waterproofed, then complete waterproofing is achieved, but the process becomes complex and time-consuming
Solution Approach 1:
The deformable plates are designed as flexible, elastic structures that can conform to the three-dimensional shape of the semimanufactured product. This flexibility allows the pressing device to maintain simple contact with complex geometries, achieving complete waterproofing without requiring complex adjustable mechanisms or multiple pressing stages.
Solution Approach 2:
The waterproofing sheath is pre-shaped and pre-positioned on the semimanufactured product before the pressing operation. This preliminary arrangement ensures that the waterproofing layer is correctly positioned on complex three-dimensional surfaces, eliminating the need for complex real-time adjustment mechanisms during the pressing process.
3Productivity
If manual arrangement of products and sheaths is used, then flexibility is maintained, but productivity is reduced
Solution Approach 1:
The deformable plates are designed to dynamically adapt to the shape of the semimanufactured product through elastic deformation during the pressing operation. This dynamic capability allows the system to maintain flexibility in handling various product geometries while enabling automated operation, thereby increasing productivity without sacrificing operational flexibility.
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
Enables efficient, automated, and cost-effective waterproofing of semimanufactured products with improved safety and productivity, suitable for both industrial and handicraft production.
Implementation Method 1
the surface contacting the leather is provided with a glue pattern... if the glue is thermoactivable
Implementation Method 2
deformable plates made up of a hollow body having an elastic pressing surface urged outwards by hot air under pressure
Implementation Method 3
a suitable transpiration of the leather is achieved also in the zones where it is glued to the membrane
Data Source
AI summary
Process for waterproofing semimanufactured footwear, clothing items and accessories, said semimanufactured product having a three-dimensional conformation with at least one inner surface and one outer surface, which comprises the following operative steps:arranging the semimanufactured product onto a shaped support (14; 27, 28; 30, 31) with at least one waterproofing sheath (18) shaped for entirely or partially cover the surfaces to be waterproofed of the semimanufactured product, at least one glue layer being arranged between these surfaces and the waterproofing sheath (18);pressing between two deformable plates (2, 2′) the semimanufactured product provided with the waterproofing sheath (18) and arranged on the shaped support (14; 27, 28; 30, 31).The present invention also relates to a machine that carries out said process, as well as the semimanufactured products obtained with said process or machine.