Oil pump test system and its test method

Abstract

The invention relates to an oil pump test system and a test method using the same. The oil pump test system comprises a main controller, a servo motor for driving a detected oil pump, a servo control assembly for controlling the servo motor, a proportional overflow valve, a second overflow valve and a main oil way connected to an outlet of the detected oil pump and also comprises a main test oil way for simulation of work of the oil pump in an injection machine. The main test oil way comprises a cartridge inserted valve A, a cartridge inserted valve B, a cartridge inserted valve C, a direction valve, an oil inlet pipe and an oil return pipe. The proportional overflow valve is used for controlling return oil pressure. The cartridge inserted valve C and the second overflow valve form a main safety pressure controller of a main oil way. An oil outlet of the second overflow valve is connected to an oil tank by the oil return pipe. Oil supplied by the tested oil pump goes through the cartridge inserted valves and then return the oil tank so that a test is finished. The proportional overflow valve controls the returned oil pressure so that pressure pulsation, high-speed high-pressure performance, pressure maintaining performance, noise, fatigue and internal leakage tests on the oil pump are realized.

Description

technical field [0001] The invention relates to the technical field of injection molding machines, in particular to an oil pump test system and a test method thereof. Background technique [0002] The working process of an injection molding machine is generally divided into stages such as mold clamping, injection, plasticization, pressure holding, cooling, mold opening and ejection. Different stages require hydraulic systems to provide different pressure flows, so hydraulic oil generally undergoes pressurization. , the cyclic process of pressure holding and pressure relief, with the continuous deepening of energy conservation and environmental protection awareness, people put forward higher and higher requirements for the energy consumption and control accuracy of traditional injection molding machines, which require high control accuracy, good stability and low noise Wait, this has quite high requirements for oil pumps. However, there are many brands of oil pumps on the mar...

AI Technical Summary

Problems solved by technology

[0002] The working process of an injection molding machine is generally divided into stages such as mold clamping, injection, plasticization, pressure holding, cooling, mold opening and ejection. Different stages require hydraulic systems to provide different pressure flows, so hydraulic oil generally undergoes pressurization. , the cyclic process of pressure holding and pressure relief, with the continuous deepening of energy conservation and environmental protection awareness, people put forward higher and higher requirements for the energy consumption and control accuracy of traditional injection molding machines, which require high control accuracy, good stability and low noise Wait, this has quite high requirements for oil pumps. However, there are many brands of oil pumps on the market, and the quality varies. Many oil pump demanders have to solve the problem. If the oil pump is installed on the machine and carried out follow-up test during work, not only the test period is long, but also the product quality cannot be guaranteed.

Images