| 摘要 |
This new apparatus includes or relates to an injection molding press wherein injection means including a cylinder and power-actuated piston is provided for forcing a plastic material into a mold cavity and wherein a slidably positioned injection nozzle connects the injection cylinder to a charge sprue provided in the mold. Special means position the injection nozzle for limited sliding movement in sealed relationship with the injection nozzle whereby the injection nozzle can be operated and will function satisfactorily under varied injection molding pressures and conditions. The invention further relates to an automatic power timer and cycle control means connecting to the injection means and to mold positioning means whereby the pressure exerted on the mold for mold closing action can be momentarily relieved to permit entrapped air to escape during an injection molding cycle.
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