Supply device of plastic extruder

Abstract

The invention provides a supply device of a plastic extruder. The supply device comprises at least two supply mechanisms. Each supply mechanism is provided with a preheating bin, wherein a feed inlet of the preheating bin is connected with a raw material bin, a discharge outlet of the preheating bin is connected with the plastic extruder, the feed inlet is provided with an opening and closing valve, a weighing device is arranged in the preheating bin, and the opening and closing valve is in communication connection with the weighing device; and the preheating bin is provided with a heating device and a stirring device. Through the scheme, raw materials can be preheated, and the raw material feeding temperature is increased.

Description

technical field [0001] The invention relates to the technical field of plastic extruders, in particular to a feeding device for plastic extruders. Background technique [0002] Existing plastic extruders usually use the method of adding the plastic raw material particles to be processed directly into the extruder through the hopper at room temperature during the plastic processing process. The extruder and the barrel have been set in advance. Appropriate processing temperature, after the plastic material enters the extruder, under the heating of the screw and the barrel, it undergoes shearing action at the same time to make the plastic melt, and the molten plastic is sent to the mold or runner through the rotation of the screw for processing . [0003] With the advancement of plastic processing technology and the advent of some special functional plastic materials, the use of existing processing technology will not achieve the corresponding product quality, or the functiona...

AI Technical Summary

Problems solved by technology

[0003] With the advancement of plastic processing technology and the advent of some special functional plastic materials, the use of existing processing technology will not achieve the corresponding product quality, or the functional characteristics that should be possessed, especially some special functional composite materials, Some are very sensitive to temperature, the temperature range that can be processed is very narrow, or they cannot withstand shear, and must be processed under low shear state, which requires the raw material to maintain a certain temperature before entering the extruder

[0004] The existing processing process makes the raw materials of plastics enter the extruder from the hopper at room temperature. The initial temperature of the raw materials depends entirely on the ambient temperature, and the initial temperature of the raw materials cannot be changed.

Images