Plastic fused mass color-mixture device of plastic pipe extruder

Abstract

The invention discloses a plastic melt color blending device for a plastic pipe extruder, which comprises a transitional connector (3), a front transitional sleeve (6), a rear transitional sleeve (2), a heating ring (5) and at least two color blending components (4), wherein the front transitional sleeve (6) and the rear transitional sleeve (2) are arranged at two ends of a cavity of the transitional connector (3); the color blending components (4) are sequentially arranged in the cavity of the transitional connector (3) and the two ends of the color blending components (4) are pressed against the front transitional sleeve (6) and the rear transitional sleeve (2) respectively; each color blending component (4) comprises annular substrates (4.1) and mutually and peripherally positioning devices between the annular substrates (4.1); and the insides of the annular substrates (4.1) are provided with a fence (4.2) consisting of grid plates (4.2.1) and fence connecting plates (4.2.2). The device makes the surface of plastic pipes uniform in color and free from gas marks and shadows and increases the utilization rate of a colorant.

Description

Technical field [0001] The invention relates to the technical field of plastic pipe extruders, in particular to a plastic melt color mixing device of a plastic pipe extruder. Background technique [0002] At present, the commonly used plastic pipe extrusion methods are generally that after the plastic melt is extruded from the plastic extruder, it passes through a die connecting body and directly enters the plastic pipe mold. The die connecting body through which the plastic melt flows is the connecting part of the die and the extruder. One end flange is installed on the extruder, and the other end flange is tightly connected with the die. The flow channel of the die coupling body is a smooth arc transition flow channel, which realizes a smooth and uniform transition between the exit flow channel of the extruder and the inlet flow channel of the die. There are no components installed in the flow channel, only the first channel cavity, so that the plastic melt enters the mold dire...

AI Technical Summary

Problems solved by technology

Such extruded plastic pipes often have uneven appearance and color due to insufficient mixing in the plastic melt stage, and uneven melt flow leads to uneven texture of the pipe material, resulting in obvious air marks and shadows on the surface of the product. At the same time, the colorant has not been fully utilized, which greatly reduces the utilization efficiency of the colorant

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