Method and apparatus for manufacturing three-dimensional work pi

Details Method and apparatus for manufacturing three-dimensional work pi Method and apparatus for manufacturing three-dimensional work pi

Filed on

1981-05-04

Date issued

1983-09-20

Examiner

Parrish, John A.

Patent Class

Plastic and nonmetallic article shaping or treating: processes

SubClass

Pore forming in situ

SubSubClass

Composite article making

Other Related Categories

264 464, 264138, 264163, 264279, 264321, B29C 116

Type

Patent

Status

active

Patent number

044055374

Description

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: 2690987 (1954-10-01), Jeffries
patent: 3461761 (1969-08-01), Mojonnier
patent: 3832264 (1974-08-01), Barnette
patent: 3994763 (1976-11-01), Sheoth
patent: 4106379 (1978-08-01), Spengler
patent: 4130615 (1978-12-01), Decker
patent: 4186536 (1980-02-01), Piazza

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