Method for making molded photointerrupters

Details Method for making molded photointerrupters Method for making molded photointerrupters

1992-11-20

1995-02-21

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

To produce composite, plural part or multilayered article

26427215, 26427217, 264277, 425123, B29C 4514, B29C 4532

Patent

active

053913469

ABSTRACT:
A method is provided for making molded photointerrupters by using first and second leadframes. The first leadframe carries a plurality of light emitting devices, whereas the second leadframe carries a plurality of light receiving devices. The apparatus used includes a molding unit which includes: a lower mold member which supports the first leadframe in a horizontal posture; an upper mold member movable vertically toward and away from the lower mold member; and a pair of side mold members movable laterally toward and away from each other between the upper and lower mold members, one of the respective side mold members supporting the second leadframe in a horizontal posture; wherein the respective mold members forms molding cavities when the mold is closed.

REFERENCES:
patent: 3417193 (1968-12-01), Cole
patent: 4540533 (1985-09-01), Sahakian

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