Hot press fast oil supply load pressurized hydraulic system

Abstract

The invention provides a rapid oil supply load pressurization hydraulic system of a hot press. The rapid oil supply load pressurization hydraulic system of the hot press comprises a plurality of hydraulic work cylinders arranged at the bottom of the hot press, the work cylinders are connected with an oil supply end of an oil supply cylinder through an oil path, the oil supply cylinder is of a piston pressurization type structure, a piston is connected with and controls a movable rapid ascending cylinder, a plunger pump is connected between the rapid ascending cylinder and the oil supply end of the oil supply cylinder and drives the rapid ascending cylinder to pressurize the piston of the oil supply cylinder to realize oil supply to the work cylinders and the rapid ascending cylinder, a check valve permitting hydraulic oil to flow to the work cylinders under certain pressure is arranged between the work cylinders and the oil supply cylinder, and electromagnetic reversing valves are arranged between the output end of the plunger pump and the output end of the check valve as well as between the output end of the check valve and the oil supply cylinder. The rapid oil supply load pressurization hydraulic system of the hot press realizes the purpose of rapid oil injection of the work cylinders of the hot press, thereby enabling a load pushed by the work cylinders to be closed rapidly, saving energy and prolonging the service life of elements.

Description

Technical field [0001] The invention relates to the field of wood-based panel hot presses, in particular to a hydraulic system for rapid oil supply and load pressurization of the hot press. Background technique [0002] The wood-based panel hot press is a machine that uses pressure to press multi-layer boards into wood panels. It is widely used in the manufacture of various building boards and wood panels. This hydraulic press requires fast closing speed and fast pressure compensation. . The current fast oil supply system of the heat press generally uses two oil supply methods: the first method is dual pump oil supply or multi-pump oil supply. This oil supply method depends on increasing the power of the motor and the number of motors. Increase the flow of liquid in the hydraulic system to achieve the purpose of rapid oil supply. The second fast fuel supply method is to supply fuel to the nitrogen accumulator. This fuel supply method uses compressed gas to increase the pressure...

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