Pressurization oil tank for injection molding machine

Abstract

A pressurization oil tank for an injection molding machine comprises an oil tank for oil storage. The tank body is provided with an air inlet, an oil suction opening and an oil return opening. The air inlet communicates with an air supply device, and the oil suction opening communicates with the oil suction end of a servo pump. The air supply device comprises a pneumatic dual linkage part and a pneumatic reversing valve, and the air inlet communicates with an outside compressed air source sequentially through the pneumatic reversing valve and the pneumatic dual linkage part. The pressurization oil tank has the following beneficial effects that the structure is simple and reasonable, the air pressure in the oil tank is larger than the outside air pressure through the air supply device, the pressure of the oil suction opening of an oil pump is improved, and therefore it can be ensured that a hydraulic system of the injection molding machine reliably operates in plateau sections, the noise of the oil pump can be reduced, and the service life of the oil pump can be prolonged; the tank body in the structure is totally closed, and the cleanliness of oil can be effectively improved; and it can be ensured that self suction of the oil pump is smooth in the plateau sections, in addition, the oil suction pipe diameter can be optimized, and the functions of reasonable layout and structure optimization can be achieved.

Description

Technical field [0001] The invention relates to an injection molding machine, in particular to a pressurized fuel tank for the injection molding machine. Background technique [0002] In the prior art, injection molding machines all use atmospheric oil tanks, and the pumps mainly rely on external atmospheric pressure to suck oil. However, as the use environment changes or the layout of the hydraulic pipeline is restricted, in order to ensure the pressure of the suction port of the hydraulic pump, the suction pipe of the corresponding pump It will be very large or the machine cannot operate normally, especially for high-speed injection injection molding machines used at high altitudes. This type of injection molding machine has a large instantaneous flow during high-speed injection. How to ensure the pressure of the oil pump suction port has become a problem. Therefore, there are It is necessary to design an injection molding machine oil tank that can control the pressure. Summar...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a pressurized oil tank for injection molding machines that can solve the problem that the self-priming of oil pumps in plateau areas cannot meet the standard, improve the oil-absorbing environment, prolong the service life of the pump, and optimize the size of the oil-absorbing pipe diameter, so as to overcome the existing technology. inadequacies in

Images