Pressurizing hydraulic circuit of injection molding machine

• Main Authors: TAN WANHONG, ZUO WENJUAN, CHEN JUNSHOU, JIANG TAO, LI JIANJUN
• Format: Patent
• Language: Chinese; English
• Published: 22.07.2022
• Subjects: BLASTING; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR; FLUID-PRESSURE ACTUATORS; FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS; HEATING; HYDRAULICS OR PNEUMATICS IN GENERAL; LIGHTING; MECHANICAL ENGINEERING; SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; WEAPONS

The utility model discloses a pressurizing hydraulic circuit of an injection molding machine. The pressurizing hydraulic circuit comprises a working oil cylinder group, a pressurizing oil cylinder, a first flow logic valve, a second flow logic valve, a pressurizing auxiliary valve, an oil supply part, an oil return part, a first one-way valve, a second one-way valve and a pressure release valve, the hydraulic system can be applied to the injection molding machine, and the oil inlet condition of the working oil cylinder group and the condition of the pressurizing oil cylinder can be correspondingly changed by controlling the first flow logic valve and the second flow logic valve. Therefore, when the requirement for mold locking force is not high, mold locking can be conducted only through the working oil cylinder set, and when the requirement for mold locking force is high, the pressurizing oil cylinder can be started to work after the working oil cylinder set conducts mold locking work, so that the mold locki