Laminated Body Forming With Sequential Die Members to Suppress Wrinkles
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Solution Overview
Problem
Existing methods for forming laminated bodies of reinforced fibers against forming dies often result in wrinkles, particularly in regions with significant shape changes, due to the inability to adjust the timing and regions of forming effectively.
Innovation Solution
A forming device with a first forming die having a curved surface and a second forming die with aligned members, controlled by a mechanism to apply pushing forces at different timings to adjacent members, allowing for controlled deformation and suppression of wrinkles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a bladder is used to apply pressure to form the laminated body, then the forming process can be simplified, but the timing and region of forming cannot be adjusted to suppress wrinkles
Solution Approach 1:
The second forming die is divided into multiple forming members (first forming member, second forming member, etc.) that can be independently controlled. Each forming member can be pressed against the first forming die at different timings, enabling precise control over the forming process to suppress wrinkles while maintaining reasonable process complexity
Solution Approach 2:
The forming members are made movable relative to the second forming die body, allowing dynamic adjustment of pressing timing and position. The control unit coordinates the movement of multiple forming members to press against the first forming die at different timings, enabling adaptive forming control to prevent wrinkle formation
2Shape
If the forming die has a curved surface with concave or convex shapes, then the desired structural complexity can be achieved, but wrinkles are more likely to occur
Solution Approach 1:
The control unit controls the forming members to press against the first forming die at different timings, with the first forming member pressing before the second forming member. This preliminary sequential action allows the laminated body to adapt to the curved surface shape gradually, preventing sudden deformation that causes wrinkles
Solution Approach 2:
Multiple forming members press against the first forming die in a sequential periodic manner rather than simultaneously. This periodic pressing action allows controlled deformation propagation across the curved surface, enabling the laminated body to conform to complex shapes without wrinkle formation
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
The device effectively suppresses wrinkles by allowing controlled deformation of the laminated body during forming, ensuring a smooth transition along complex die surfaces.
Implementation Method 1
a pushing force generating mechanism configured to generate pushing force for pressing the second forming die against the first forming die
Implementation Method 2
the control unit controls the plurality of pushing force generating units so as to press a pair of the forming members arranged adjacent in the longitudinal direction against the first forming die at different timings from each other
Data Source
AI summary
Provided is a forming device including: a lower die; an upper die for forming a laminated body along the surface shape of the lower die by pressing the laminated body against the lower die; a pushing force generating mechanism that generates pushing force for pressing the upper die against the lower die; and a control unit that controls the pushing force generating mechanism, the upper die has a plurality of forming members aligned in the longitudinal direction, the pushing force generating mechanism has a plurality of pushing force generating units connected to the plurality of forming members and configured to generate pushing force for pressing the forming members against the lower die, and the control unit controls the plurality of pushing force generating units so as to press a pair of forming members arranged adjacent in the longitudinal direction toward the lower die at different timings from each other.