Patent ID: 11958225
Assignee: NISSEI PLASTIC INDUSTRIAL CO., LTD.
Field: Other special machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. An injection molding method for a mold comprising a fixed mold and a movable mold, comprising:
setting specific molding conditions for a start of injection in advance by determining a parting opening amount that forms a predetermined gap between the movable mold and the fixed mold at injection filling;
determining a molding injection pressure that is an injection pressure capable of molding a product and a molding clamping force;
setting a fast injection speed from the start of injection, the fast injection speed being higher than an injection speed set by the specific molding conditions;
setting a fast injection section for continuing the fast injection speed as fast injection conditions;
clamping the mold by a molding clamping device during molding;
setting the molding injection pressure to a limit pressure;
injecting and filling resin into the mold from the start of injection under the fast injection conditions;
injecting and filling resin under the specific molding conditions at an end of the fast injection section; and then
taking out the product from the mold when a predetermined cooling time has elapsed.