Patent ID: 7128869
Filing Date: 2006-10-31
Classification: B29C

Abstract:
1. Process for producing shell-shaped plastic parts from fiber-reinforced, thermosetting plastic in a forming press with a forming tool having a female mold, a female mold-clamping unit, and a male mold, comprising: moving the female mold out of the forming press, placing a blank cut off from an endless fiber mat and corresponding to a workpiece in an automated manner by an industrial robot onto the female mold, which has been moved out of the forming press, and is firmly held there, in such a way that the blank is fed after itself, by a surrounding clamping frame, spraying the blank placed in the clamping frame over an entire surface area with a specifically set amount of reactive matrix resin in the region covering the female mold by a spraying nozzle guided movably at a distance from the blank, after moving the female mold-clamping frame unit back into the forming press and closing the forming tool, while maintaining a specifically set tensile stress in the blank, draping the blank into the female mold without any folds or incipient tears, the blank is thereby formed into a desired shell form, at the same time the matrix resin is pressed into spaces between fibers and entrapped air is forced out, keeping the resin-impregnated fiber mat in a formed and pressed state for a specifically set time period and, at the same time, curing the matrix resin within the forming tool, and after opening of the forming tool, removing the plastic part and cutting off an edge of the blank lying outside the desired shell form of the workpiece, serving for stretching out the blank during the forming phase, from the workpiece.