Mechanism for making openings in plastic parts within a mold...

Details Mechanism for making openings in plastic parts within a mold... Mechanism for making openings in plastic parts within a mold...

2006-03-07

2006-03-07

Colaianni, Michael P. (Department: 1732)

Plastic and nonmetallic article shaping or treating: processes

With severing, removing material from preform mechanically,...

Making hole or aperture in article

C264S328900, C264S328110, C425S577000, C425S595000

Reexamination Certificate

active

07008585

ABSTRACT:
An assembly disposed within a mold for forming openings in a plastic part includes a punch pin and a backing pin having faces disposed flush with a surface of a mold cavity. The backing pin is disposed opposite the punch pin. The punch pin is driven into the completed plastic part removing material to form an opening. The waste material is driven into a bore housing the backing pin. The backing pin recedes into the bore to accept the waste material. Upon ejection of the plastic part the waste material ejects from the mold cavity as the backing pin moves back to a position flush with the surface of the mold cavity.

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