Double-gas-chamber air cylinder for hot runner system

Abstract

The embodiment of the invention provides a double-gas-chamber air cylinder for a hot runner system, and belongs to the technical field of hot runner air cylinders. The double-gas-chamber air cylindercomprises an upper cylinder body and a lower cylinder body, wherein the upper cylinder body is provided with a first gas channel connector and a second gas channel connector and further provided withan upper piston, the upper piston is arranged in an upper rod body, and the upper cylinder body is divided into an upper piston ejector chamber and an upper piston contraction chamber through the upper piston; the lower cylinder body is connected to the lower portion of the upper cylinder body and provided with a lower piston, the lower piston is arranged in the lower cylinder body, and the lowercylinder body is divided into a lower piston ejector chamber and a lower piston contraction chamber through the lower piston; the upper piston acts on the lower piston; and pressure gas simultaneouslyacts on the upper piston and the lower piston through a first gas channel. The technical effect that a booster pump and an enhanced air cylinder are avoided from being used to output power is achieved.

Description

technical field [0001] The invention relates to the technical field of a hot runner cylinder, in particular to a double-chamber cylinder used in a hot runner system. Background technique [0002] The hot runner system is an advanced gating system for mold injection molding, which can keep the raw materials in a suitable melting temperature range, thereby avoiding the generation of cold material waste, which not only solves the problem of raw material waste, but also solves the automation of injection molding. question. The hot runner hot nozzle is divided into open type and needle valve type according to the sealing form of the nozzle. The so-called open type means that there is no valve needle for actively closing the sealing material inside the gate, and the closing of the gate mainly depends on the front section. After the injection molding of the gate is completed, a small section of cold plug is produced to block the flow of the molten plastic at the rear end. The comp...

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Problems solved by technology

[0005] The embodiment of the present application provides a dual-chamber cylinder used in a hot runner system, which solves the technical problem in the prior art that the effect of the booster pump on the cylinder will affect the service life of the cylinder; avoiding the use of the booster pump and enhancing the output of the cylinder Technical Effects of Strength

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