Barrel heater of extruder

Abstract

The invention provides a barrel heater of an extruder. The barrel heater comprises a barrel, a screw, a heating device and a stirring device. The barrel is in a split top and bottom structure; the screw is disposed in an inner cavity of the barrel and connected with a power device. The heating device comprises a circular cavity, a cavity cover, a heating plate and an insulation layer; the circular cavity sleeves the barrel and filled with heat transfer oil; the outer wall of the circular cavity is provided with the heating plate and the insulation layer. The stirring device comprises a circular bottom plate and a stirring rod; the circular bottom plate is fixedly connected with the cavity cover; the stirring rod penetrates the circular bottom plate and the cavity cover in order through a rotary shaft and is connected with the power device; the power device drives the stirring rod to rotate. The barrel heater has the advantages that the split structure of the barrel allows convenience of disassembly, the addition of the circular cavity filled with the heat transfer oil to the heating device maximizes the heating area, the stirring device allows oil temperature to be evener, plastic can be melted evenly, and product quality is higher.

Description

technical field [0001] The invention belongs to the field of extruders, in particular to a heating device for a barrel of an extruder. Background technique [0002] The extruder uses high temperature to melt the plastic, and the melted plastic passes through the mold to form the required shape. Therefore, the heating device is an important part of the extruder. Most of the external heating devices of the existing extruder use the heating plate directly placed On the outer wall of the barrel, but the heating plate and the barrel are difficult to achieve seamless coverage, there must be uneven heating of the barrel, and the uneven heating of the barrel may easily cause uneven and incomplete melting of the plastic particles in the barrel. This affects the quality of the product; in addition, the traditional barrels are all integrally formed structures, and when the feeding device in the barrel and the barrel body are damaged or faulty, maintenance is extremely inconvenient. C...

AI Technical Summary

Problems solved by technology

[0002] The extruder uses high temperature to melt the plastic, and the melted plastic passes through the mold to form the required shape. Therefore, the heating device is an important part of the extruder. Most of the external heating devices of the existing extruder use the heating plate directly placed On the outer wall of the barrel, but it is difficult to achieve seamless coverage between the heating sheet and the barrel, there must be uneven heating of the barrel, and uneven heating of the barrel may easily cause uneven and incomplete melting of the plastic particles in the barrel. Thus affecting the quality of the product; in addition, the traditional barrel is an integral structure, when the feeding device in the barrel and the barrel body are damaged or malfunctioned, maintenance is extremely inconvenient

Images