Apparatus for deep drawing a thermoplastic foil

Details Apparatus for deep drawing a thermoplastic foil Apparatus for deep drawing a thermoplastic foil

2008-07-22

2008-07-22

Gupta, Yogendra (Department: 1791)

Plastic article or earthenware shaping or treating: apparatus

Preform reshaping or resizing means: or vulcanizing means...

Including shaping means comprising fluid pressure contacting...

C425S395000, C425S398000, C425S412000

Reexamination Certificate

active

11264761

ABSTRACT:
An apparatus for thermoshaping a thermoplastic foil has a lower tool carried on the frame and having an upper face formed with an array of upwardly open mold cavities, and an upper beam vertically displaceable above the lower tool. A punch plate fixed on the upper beam is provided with an array of downwardly projecting punches fittable in the cavities. A hold-down plate below the punch plate is limitedly vertically shiftable relative thereto. The hold-down plate is formed with an array of holes through which pass the punches. An actuator downwardly shifts the upper beam when the foil is extending horizontally between the lower tool and the hold-down plate for first pressing the foil with the hold-down plate against the upper face of the lower tool and then pushing the punches through the holes against the foil into the cavities to form pockets in the foil at the cavities.

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