Browse Prior Art Database

Closed Mold Compression Forming

IP.com Disclosure Number: IPCOM000077643D
Original Publication Date: 1972-Aug-01
Included in the Prior Art Database: 2005-Feb-25
Document File: 2 page(s) / 43K

Publishing Venue

IBM

Related People

Durhman, P: AUTHOR [+4]

Abstract

To achieve a predetermined fiber orientation in a finished molded composite material part, a mold cavity assembly 10 as shown in Fig. 1 is utilized. Assembly 10 includes a cavity base 11, a series of horizontally movable members 13 and a vertically movable member 14 (Fig. 2). Each of the members 13 is driven by an actuator 15 during the molding cycle to a terminal position, whereat the surfaces 16 form a part of the cavity which defines the finished part.

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Closed Mold Compression Forming

To achieve a predetermined fiber orientation in a finished molded composite material part, a mold cavity assembly 10 as shown in Fig. 1 is utilized. Assembly 10 includes a cavity base 11, a series of horizontally movable members 13 and a vertically movable member 14 (Fig. 2). Each of the members 13 is driven by an actuator 15 during the molding cycle to a terminal position, whereat the surfaces 16 form a part of the cavity which defines the finished part.

The loading position of mold assembly 10 is shown in Fig. 1 with members 13 retracted outwardly. A series of preformed modules 19, having a predetermined fiber alignment, are positioned in the cavity to obtain a desired property or properties in the completed molded part.

To complete the molding operation, the upper cavity portion 20 is moved downwardly into contact with assembly 10 and actuators 15 are activated, either simultaneously or in sequence, to move elements 13 and 14 to the terminal, part defining position, whereupon the plastic matrix material is cured.

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