Energy-saving, high-efficiency, closed pressurized oil supply profile extrusion machine

Abstract

The invention relates to an energy-saving high-efficiency closed-type pressurizing oil supply sectional material extruder which comprises a base, a mould, an ingot containing barrel, an auxiliary cylinder, a shearing device and an oil supply system, wherein the mould, the ingot containing barrel and the auxiliary cylinder are sequentially arranged on the base; the oil supply system comprises a main cylinder and an oil storage tank; the main cylinder is provided with a plunger; the extruder is a short-stroke extruder; the ingot containing barrel of the extruder is arranged on the top position of an extrusion rod, and the ingot containing barrel forms a feed space with the mould during displacement; the oil storage tank includes a closed oil return tank and a closed pressurizing oil cylinder; the oil return tank is connected with the main cylinder through a reflux oil way connected into the main cylinder, and the oil return tank is connected with the pressurizing oil cylinder through an oil supply pipeline; the pressurizing oil cylinder is provided with a piston which acts on the pressurizing oil supply pipeline to supply oil to the main cylinder, and oil inside the pressurizing oil cylinder is extruded into the main cylinder or oil inside the main cylinder is refluxed into the pressurizing oil cylinder through a circulating oil way through the reciprocating motion of the piston; and the oil supply system is controlled by a plurality of servo motor oil pump sets. The energy-saving high-efficiency closed-type pressurizing oil supply sectional material extruder disclosed by the invention can be used for effectively enhancing the production rate, reducing the manufacturing cost of an integral machine, saving the material and reducing the oil consumption.

Description

technical field [0001] The invention belongs to the field of profile forming equipment and relates to a profile extrusion machine. Background technique [0002] The structure of the traditional extruder is relatively complicated, the cost is high, the stroke is long, the work efficiency is low, and the oil consumption is large. And the extruders all adopt top open oil tanks. When the plunger master cylinder moves forward and backward without load, it is pushed by the auxiliary master cylinder, and the hydraulic oil enters and returns through the filling valve. When the oil is fed, it is propelled by gravity, so the hydraulic oil is in contact with the atmosphere for a long time. Due to the large flow of hydraulic oil every time it works, it is easy to mix with air and dust, and there are many oil valves and oil pumps on the oil circuit of the extruder, so it is also easy to suck air and mix gas, so this open type The oil tank seriously affects the use of hydraulic oil and...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the working stroke of the ingot barrel and the extrusion rod is large when the existing profile extruder is working, the oil consumption is large, and the oil circuit of the oil supply system is in contact with the atmosphere, which affects the service life of the hydraulic oil, etc. Defects, provide energy-saving, high-efficiency, closed pressurized oil supply profile extrusion machine

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