Discharge apparatus for two-stage injection molding machine

A discharge apparatus for a two-stage injection molding machine, comprising:

• a check shaft seat having a runner, and disposed between a feeding portion and an injection portion of the two-stage injection molding machine, for allowing a plastic material in the feeding portion to enter the injection portion via the runner;
• at least one check shaft disposed in the check shaft seat, and for opening and closing the runner via movement of the check shaft;
• at least one cover provided at a side of the check shaft seat, and having at least one discharge hole for discharging residues of the plastic material between the check shaft seat and the check shaft;
• and
• at least one adjustable bolt for adjusting a diameter of the discharge hole.

A discharge apparatus for a two-stage injection molding machine, comprising:

• a check shaft seat having a runner, and disposed between a feeding portion and an injection portion of the two-stage injection molding machine, for allowing a plastic material in the feeding portion to enter the injection portion via the runner;
• at least one check shaft disposed in the check shaft seat, and for opening and closing the runner via movement of the check shaft;
• at least one cover provided at a side of the check shaft seat, and having at least one discharge hole for discharging residues of the plastic material between the check shaft seat and the check shaft;
• and
• at least one adjustable unit comprising an adjustable bolt, an adjustable spring and a leakage stop block, and for adjusting a pressure applied to the discharge hole.

A discharge apparatus for a two-stage injection molding machine, comprising:

• a check shaft seat having a runner, and disposed between a feeding portion and an injection portion of the two-stage injection molding machine, for allowing a plastic material in the feeding portion to enter the injection portion via the runner;
• at least one check shaft disposed in the check shaft seat, and for opening and closing the runner via movement of the check shaft;
• at least one cover provided at a side of the check shaft seat, and having at least one discharge hole for discharging residues of the plastic material between the check shaft seat and the check shaft;
• and
• at least one adjustable shaft for adjusting opening and closing of the discharge hole.