Die insert for molding a speaker grille
An insert of a die for molding a speaker grille includes a forming member. The forming member defines a forming surface, from which a plurality of pins extend for forming apertures in a speaker grille. The forming surface defines a plurality of apertures disposed at spaced locations between the pins. The apertures are interconnected with a plurality vent channels communicating the apertures with the vent channels for venting air disposed in a die when melted polymer used to form the speaker grill is injected into the die. The forming member and the vent channels are formed as a monolithic construction.
1. An insert of a die for molding a speaker grille, said insert comprising:
a forming member including a forming surface defining plurality of pins extending therefrom for forming acoustic openings in a speaker grille, said forming surface defining a plurality of apertures disposed at spaced locations between said pins;
said apertures being interconnected by a plurality vent channels extending through said forming member for venting gas disposed in a die cavity when melted polymer used to form the speaker grill is injected into the die cavity; and
said forming member and said vent channels being defined by a monolithic construction.
2. The insert set forth in claim 1 , wherein said plurality of vent channels is interconnected with a vent manifold.
3. The insert set forth in claim 1 , wherein said vent manifold is defined by said forming member.
4. The insert set forth in claim 2 , wherein said vent manifold is interconnect to a central exhaust.
5. The insert set forth in claim 4 , wherein said central exhaust is defined by said forming member.
6. The insert set forth in claim 4 , wherein said central exhaust vents air evacuated from the die to atmosphere.
7. The insert set forth in claim 1 , further including a cooling channel for circulating cooling medium proximate said forming member.
8. The insert set forth in claim 7 , wherein said cooling channel is defined by a monolithic construction with said forming member and said vent channels.
9. The insert set forth in claim 1 , wherein said forming member is formed from a homogeneous alloy.
10. The insert set forth in claim 1 , wherein said homogeneous alloy is substantially impermeable.