Dual-accumulator oil circuit system for die-casting machine

A dual-accumulator oil circuit system for a die-casting machine, comprising an injection cylinder and an accumulator, wherein the dual-accumulator oil circuit system further comprises a booster accumulator;

• the booster accumulator comprises a booster chamber and an annular chamber;
• the booster chamber is communicated with a rodless chamber of the injection cylinder;
• the accumulator is communicated with the annular chamber of the booster accumulator through a first servo valve;
• the annular chamber is communicated with an oil tank through a second servo valve;
• a rod chamber of the injection cylinder is communicated with the oil tank through a third servo valve;
• the dual-accumulator oil circuit system further comprises a valve assembly;
• the valve assembly comprises a valve V8 and a valve V5;
• the accumulator is connected in series with the first servo valve and the valve V8 in sequence to form a sixth oil circuit with the annular chamber of the booster accumulator;
• the annular chamber of the booster accumulator is communicated with the second servo valve to form a seventh oil circuit with the oil tank;
• the booster chamber of the booster accumulator is communicated with the valve V5 to form an eighth oil circuit with the rodless chamber of the injection cylinder;
• A-bridge control is applied to the annular chamber of the booster accumulator by the first servo valve and the second servo valve;
• the valve V5 is an oil inlet valve for supplying oil to the rodless chamber of the injection cylinder in control of a booster oil circuit;
• and the valve V8 is an oil inlet valve for the accumulator to supply oil to the annular chamber of the booster accumulator.