| 摘要 |
PURPOSE: A barrel-type silicon injection molding device is provided to maintain a constant quality of molded silicon articles by inputting the set amount of a liquid silicon material and a hardening agent to a mold without errors. CONSTITUTION: A barrel-type silicon injection molding device comprises a barrel(20), a mixing pipe(40), and a check valve(50). The barrel comprises a shut-off unit consisting of a plunger(25) and a valve(62). The plunger is connected to a mold(10) by a nozzle(21). The valve is positioned in the upper end of the nozzle and is operated by an air cylinder(66). In order to uniformly mix hardening liquid and the liquid silicon material, a dual spiral groove is formed in the interior of the mixing pipe at the same pitch. The dual spiral groove has a first groove in which silicon liquid flows and a second groove in which the hardening liquid flows. The check valve is installed between the barrel and the mixing pipe, and is lifted up and down by the air cylinder.
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