Environment protection high-efficiency energy-saving heating ring for TMD electric heating membrane

Abstract

An environmental protecting high efficient energy-saving TMD electrothermal diaphragm heating ring relates to an improved plastic processing machine, in particular to an improved injection molding machine heating ring. The heating ring is composed of a metal outer shell (1), an aluminium silicate wool heat insulation layer (2), an electrothermal diaphragm layer (3), an aluminium inner liner layer (4); an injection molding machine gun barrel (5) is wrapped with the aluminium inner liner layer (4); the aluminium inner liner layer (4) is covered with the electrothermal diaphragm layer (3); the aluminium silicate wool heat insulation layer (2) is arranged on the outer surface of the electrothermal diaphragm layer (3); the aluminium silicate wool heat insulation layer (2) is wrapped with the metal outer shell (1). Aiming to solve problems with the resistance wire heating ring, the improved injection molding machine heating ring adopts the heating technology of the electrothermal diaphragm; because the electrothermal diaphragm has the characteristics of thermal oxidation resistance, corrosion resistance, etc., the service life of the electrothermal diaphragm is longer than that of the resistance wire. The heating ring has the advantages of high efficiency, less environmental pollution, strong heat transfer capacity and long service life.

Description

Technical field: [0001] The invention relates to an improvement of a plastic processing machine, in particular to an improvement of a heating ring of an injection molding machine. Background technique: [0002] Plastic technology is changing with each passing day, and its uses are becoming more and more extensive. Therefore, plastic processing machinery (such as injection molding machines) has attracted much attention, and its energy consumption and efficiency will directly affect production costs. The heating rings for melting plastics used in current plastic processing machinery are all resistance wires. Its basic structure is to wind the heating resistance wire on a piece of synthetic mica sheet, wrap it with synthetic mica sheet on both sides as insulation, add stainless iron plate to wrap it, and then bend it into a circle. This current structure has the following defects: 1. 50% of all resistance wires need to transfer heat to the heating body (such as the barrel of a...

AI Technical Summary

Problems solved by technology

This existing structure has the following defects: 1. 50% of all resistance wires need to transfer heat to the heating body (such as the barrel of an injection molding machine) through a mica sheet with a thickness of 0.2mm

Therefore, its service life is greatly shortened; 4. Since this electric heating coil is wound by resistance wire, when passing through alternating current, the resistance wire will generate an alternating magnetic field, which in turn will cut the resistance wire itself, so Generate a counter electromotive force, which will hinder the flow of the original current, resulting in invisible energy loss - loss of reactive power; 5. Since the first minute of electrification, the resistance wire is working at high temperature, and its surface begins to Oxidation occurs, causing its cross-sectional area to shrink continuously, resistance to increase, and power to gradually decrease

Over time, it will cause a disconnection

Therefore, the service life is short (generally less than 1000 hours)

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