Self-checking and troubleshooting methods of plastic filament extruder

Self-checking and troubleshooting methods for common problems of plastic filament extrusion machine

Plastic filament extrusion machines often fail in daily use, but many users are unable to cope with the failure, and do not even know the cause of the failure. Below we describe two types of failures that often occur in the extruder:

1.Scorch phenomenon

(1) The temperature reflects that the temperature is too high, or the instrument that controls the temperature fails, causing the plastic to scorch at an extremely high temperature.

(2) The wire outlet of the machine head has a large amount of smoke, a strong pungent odor, and a crackling sound.

(3) granular scorch appears on the surface. (4) There are continuous air holes at the joint.

2.Causes of Scorch

(1) The super-high temperature control causes plastic scorch.

(2) The screw has been used for a long time without cleaning, and the scorched material is accumulated and extruded with the plastic.

(3) If the heating time is too long, the plastic deposits will be heated for a long time, which will cause the plastic to deteriorate and scorch.

(4) The parking time is too long, and the machine head and screw are not cleaned, causing the plastic to scorch.

(5) The mold or color is changed for many times, causing the plastic to scorch.

(6) The head gland is not tight, and the plastic is degraded inside.

(7) The temperature control instrument fails, causing scorch after ultra-high temperature.