초록 ▼

A multi-functional mold which is used for encapsulating chips placed on lead frames is characterized by a chamber arranged in one of the mold halves in which an insert can be replaceably arranged. Depending on the use of the mold in the context of the so-called transfer molding method or injection m

A multi-functional mold which is used for encapsulating chips placed on lead frames is characterized by a chamber arranged in one of the mold halves in which an insert can be replaceably arranged. Depending on the use of the mold in the context of the so-called transfer molding method or injection molding method a different insert is placed in the chamber. In the application as transfer mold the insert includes an elongate member with a bore for guiding a plunger which makes encapsulating material liquid due to the pressure applied thereto and the increasing in temperature. In the application as injection mold the insert includes a member with a through-channel allowing a plasticized encapsulating material coming from a nozzle of an injection molding device to flow into the mold.

대표청구항 ▼

A multi-functional mould convertible between transfer moulding and injection moulding for encapsulating chips placed on lead frames, comprising: mutually movable mould halves having mutually facing surfaces on which cavities are arranged for receiving chips for encapsulating, runners for the passage

A multi-functional mould convertible between transfer moulding and injection moulding for encapsulating chips placed on lead frames, comprising: mutually movable mould halves having mutually facing surfaces on which cavities are arranged for receiving chips for encapsulating, runners for the passage of encapsulating material to the cavities, a chamber in one of the mould halves and extending to the runners, a replaceable first insert member having a lengthwise bore for communicating with the chamber, the bore of the first insert member being dimensioned to receive a transfer mould apparatus plunger, and a replaceable second insert member having a lengthwise bore for communicating with the chamber, the bore of the second insert member being dimensioned to mate with an injection nozzle of an injection mould, whereby by exchanging the second insert member for the first insert member, the mould is readily convertible from transfer moulding to injection moulding, and by exchanging the first insert member for the second insert member, the mould is readily convertible from injection moulding to transfer moulding.