Apparatus for manufacturing three-dimensional work pieces

Plastic article or earthenware shaping or treating: apparatus – Preform severing means – Serially arranged with preform reshaping means

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Details

425413, 425415, 425416, 425452, B29C 1704

Patent

active

045197660

ABSTRACT:
A three-dimensional work piece, such as an interior part for a car, is manufactured by keeping the blank, such as a sheet of plastic on or in the same primary mold (24) for the initial shaping step, for the foaming step, for the curing step and for the final trimming step. The primary mold (24) shuttles back and forth in a given direction for sequential cooperation with two secondary molds (75 and 31 or 48 and 31) arranged for reciprocation in a direction extending perpendicularly to said given direction. Preferably, two primary mold members (66, 67) are arranged for horizontal back and forth shuttling in unison so that each primary mold member may cooperate with two out of three vertically reciprocable secondary molds. The efficiency is substantially doubled when each of two primary mold members (66, 67) cooperates with two out of three secondary molds. Three stations (1, 3, 10) are located next to one another so that the two primary mold members, which are rigidly connected to each other, may shuttle back and forth between two adjacent stations (1 and 3 or 1 and 10).

REFERENCES:
patent: 2586210 (1952-02-01), Corwin
patent: 2990069 (1961-06-01), Repasky
patent: 3640666 (1972-02-01), Jope
patent: 4029457 (1977-06-01), Yamamoto
patent: 4289469 (1981-09-01), Keim
patent: 4308005 (1981-12-01), Zundel

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