Prepreg Lamination Compactor Roller Arrangement
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Solution Overview
Problem
Conventional compactors used in prepreg sheet automatic lamination devices generate abrasion powder due to the abrasion of PTFE sheets and compactor shoes, which can be present between laminated semi-cured prepreg sheets, affecting adhesion and quality.
Innovation Solution
A compactor configuration with a pair of first rollers and a second roller, where the second roller faces the gap between the first rollers, minimizes abrasion by pressing the laminated sheet from the second surface side, reducing abrasion powder generation and air pockets between the prepreg sheets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional compactors with piston mechanisms and PTFE sheets are used to press the laminated sheet, then the pressing force is sufficient to minimize air pockets, but abrasion powder is generated due to friction between the PTFE sheet and compactor shoes
Solution Approach 1:
The invention replaces the conventional piston mechanism with a roller-based pressing system. The compactor includes a pressing roller that rotates to press the laminated sheet, substituting the reciprocating piston motion with continuous rotational rolling motion. This mechanical substitution eliminates the sliding friction between PTFE sheets and compactor shoes, thereby preventing abrasion powder generation while maintaining effective pressing force to minimize air pockets.
Solution Approach 2:
Instead of using a reciprocating piston that moves back and forth against the laminated sheet, the invention inverts the approach by using a continuously rotating roller that presses the sheet through rolling motion. This inversion of the pressing mechanism from linear reciprocating motion to rotational rolling motion fundamentally changes the friction dynamics, eliminating abrasion while maintaining pressing effectiveness.
2Manufacturing precision
If multiple compactors are used to press the entire surface of the laminated sheet, then air pockets are minimized, but the device complexity increases
Solution Approach 1:
The pressing function is segmented into multiple rotating rollers arranged in series along the pressing direction. Each roller independently presses a portion of the laminated sheet, and collectively they provide uniform pressing coverage across the entire surface. This segmentation of the pressing function into multiple rotational units simplifies the overall mechanism compared to using multiple complex piston-based compactors.
Solution Approach 2:
The rotating rollers serve multiple functions simultaneously: they provide pressing force to minimize air pockets, their rotation eliminates friction-based abrasion, and their continuous motion enables efficient processing. This multi-functionality of the roller component reduces the need for separate mechanisms, thereby simplifying the overall device complexity while maintaining uniform pressing coverage.
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 solution effectively minimizes the presence of abrasion powder and air pockets between laminated semi-cured prepreg sheets, enhancing the adhesion and quality of the laminated structure.
Implementation Method 1
a compactor configured to press a laminated sheet including a release sheet and a semi-cured prepreg sheet attached to a first surface of the release sheet onto a top surface of a laminate base formed of at least one semi-cured prepreg sheet
Implementation Method 2
when the conventional compactors 201 are used, as a result of the PTFE sheet 205 and the compactor shoes 203 reciprocating in the horizontal direction, abrasion powder is generated due to the abrasion of the PTFE sheet 205 and the compactor shoes 203
Data Source
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AI summary
This compactor (40) has: first roller, (46-1, 46-2) having first roller surfaces that press a laminated sheet (16) from another surface side of a release sheet (17), said rollers being arranged separated from each other; and second rollers (55) having second roller surfaces that press the laminated sheet (16) from the other surface side of the release sheet (17), said second rollers being arranged such that the second roller surfaces face a gap between the first rollers (46-1, 46-2).