Casting machine head capable of adjusting pipe accessory temperature with different material constituents

Abstract

The invention discloses a machine head of a casting machine being capable of adjusting the temperature of pipeline fittings of different raw material components, which comprises a machine body, a raw material mixing chamber and a heat-conducting medium circulating loop. The machine head is characterized in that a high-temperature raw material chamber and a low-temperature raw material chamber which are mutually isolated and internally provided with a heat exchange pipeline, a heat-conducting medium inlet opening and a heat-conducting medium outlet opening respectively, and an intermediate feeding chamber are respectively arranged in the machine body, and more than one high-temperature and low-temperature raw material chambers are arranged at the side of the intermediate feeding chamber; the respective heat-conducting media of the high-temperature raw material chambers performs heating and heat preserving to the high-temperature raw material chambers, the heat-conducting media of the high-temperature raw material chambers with operating temperature higher than that of the low-temperature raw material chambers and with higher demand to the local temperature controlling accuracy performs heating and heat preserving to all the low-temperature raw material chambers, the temperature thereof is controlled by adjusting the flow of the heat-conducting media divided by a flow dividing valve per unit time, and the heat-conducting media of one high-temperature raw material chamber performs heating and heat preserving to the intermediate feeding chamber. The invention has the advantages of accurate temperature control, simplified structure, convenient maintenance and prolonging service life of the equipment.

Description

technical field [0001] The invention relates to a pouring machine, in particular to a pouring machine head capable of adjusting the temperature of pipeline accessories of different raw material components. Background technique [0002] In polyurethane, single-piece cast nylon, formaldehyde resin, etc., the liquid raw materials are measured, mixed, and reacted in the mold at different working temperatures. The head part of the pouring equipment of the product, due to the different component raw materials in the mold There are certain temperature requirements when mixing and pouring, and the working temperature of each component raw material, the allowable working temperature variation range, and the tolerance to local supercooling and superheating of the passing pipeline are all different; The pipes, valves and other pipeline accessories related to the raw materials of each component on the head are respectively equipped with independent heat preservation and heating devices....

AI Technical Summary

Problems solved by technology

[0006] The first heating and heat preservation method is characterized by consistent and uniform heating temperature of each part, and accurate and reliable temperature control; but the structure of the machine head and the corresponding raw material discharge and return connection pipes is more complicated, and the cost of manufacturing, use and maintenance is higher.

[0007] The disadvantage of the second heating and heat preservation method is uneven heating, local overheating and overcooling are serious

This is unfavorable for the heating and heat preservation of raw material components that are solid at room temperature, have a high melting point, and are sensitive to overheating and overcooling.

In addition, the parts of the machine head attached to the location of the heating source such as the electric heating plate, electric heating rod, etc., especially some important components that have undergone heat treatment, are easily deformed due to local overheating, and the strength, hardness, rigidity and resistance The reduction of abrasiveness and other properties shortens the service life of equipment

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