Heat insulation hot runner system of automobile injection mold

Abstract

The invention discloses a heat insulation hot runner system of an automobile injection mold. The heat insulation hot runner system comprises a fixed die, a movable die and a hot runner, wherein the fixed die comprises a fixed seat plate; a positioning screw is arranged on the fixed seat plate; the movable die comprises a movable plate; a pouring gate sleeve is arranged on a fixed plate; one end of the pouring gate sleeve is connected with an injection molding machine, and the other end of the pouring gate sleeve is connected with a nozzle through the hot runner; a needle valve is arranged in the nozzle, so that the phenomenon of tape casting of melted plastic is avoided; the hot runner and a surrounding hot runner plate are made of a heat insulation material, and the hot runner and the hot runner plate are fixed through a sealing plug; the hot runner is also provided with a spring pressing ring; an electrothermal ring for keeping the temperature of the nozzle is arranged round the nozzle; the nozzle is connected with a molded core through a pouring gate lining; a push rod is arranged on a movable plate panel; the head of the push rod leans against a piece pushing plate. The heat insulation hot runner system is used for die opening, has a heat insulation function and keeps the constant temperature; plastic in a pouring system is always in a melted state, and a multi-point pouring gate can be realized; the forming period is short, and the production efficiency is high.

Description

technical field [0001] The invention relates to the field of injection molding of automobile molds, in particular to an adiabatic hot runner system of an automobile injection mold. Background technique [0002] Hot runner, also known as no runner, is the development direction of large plastic injection mold design. It means that there are still runners in the gating system, but they are larger than usual runners, or nozzle-type runners are used, and this kind of runners The method of internal or external heating is also used to keep the plastic in a molten state. The advantages of the hot runner system: because the molten material in the gating system does not solidify during the injection process, automatic high-speed injection molding can be realized, but the cost is high and the structure complex. Contents of the invention [0003] The technical problem mainly solved by the present invention is to provide an adiabatic hot runner system of an automobile injection mol...

AI Technical Summary

Problems solved by technology

[0002] Hot runner, also known as no runner, is the development direction of large plastic injection mold design. It means that there are still runners in the gating system, but they are larger than usual runners, or nozzle-type runners are used, and this kind of runners The method of internal or external heating is also used to keep the plastic in a molten state. The advantages of the hot runner system: because the molten material in the gating system does not solidify during the injection process, automatic high-speed injection molding can be realized, but the cost is high and the structure complex

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