US 5,282,732 AGranted

Mold press assembly

AssigneeDavidson Textron Inc.

InventorHorace Eggert

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Abstract

A mold press assembly has an outer press frame carrying first and second inner frames that are interlocked to the press frame during relative vertical movements of an upper platen and a lower platen for defining a throat distance for receiving mold parts connected thereto and the first and second inner frames connect on first and second drive shafts for pivotal booking movement. The shafts are connected at one end to an electric motor and connected at other points therealong to ball screws for vertically positioning an upper platen with respect to the outer press frame and for reciprocating the lower platen outwardly with respect to the pivoted second inner frame; and the first and second inner frames are driven by other ball screws and electric motors to pivot about the first and second drive shafts for providing access to mold parts connected to the upper and lower platens.

Claims15

Dependent claims

In a mold press having vertically moveable upper and lower platens each having opposite sides thereon and a press frame having opposite sides located adjacent the opposite sides of the upper and lower platens for supporting said upper and lower platens for vertical movement thereon the improvement comprising:

first and second ball screw drives located at said opposite sides of said press frame and extending vertically with respect thereto;
first and second drive nuts supported on said upper platen;
a first electric drive motor and a first drive shaft connected thereto;
said first drive shaft extending across the width of said press frame;
journals supporting the opposite ends of said drive shaft in said press frame;
a bevel gear coupling said drive shaft to each of said first and second ball screw drives for causing rotation of said first drive shaft to drive said first and second ball screw drives with respect to said first and second drive nuts for vertically reciprocating said upper platen with respect to said press frame;
a first inner frame for supporting said upper platen, said first and second ball screw drives, said first and second drive nuts and said bevel gear;
and
a pivot drive including said first drive shaft for pivoting said first inner frame with respect to said press frame for pivoting said upper platen with respect to said press frame for access to said upper platen.

6 more elements

Dependencies are inferred from the claim text.