Plastic pellet machine extrusion defect control elements:
The cross-sectional shape of the profiled material is much more complicated than the cross-sectional shape of the pipe, and there are hollow, solid, and plate sections, so the extrusion process requirements are also more demanding. The factors affecting product defects are as follows.
(1) Feeding part of the raw material formula, raw material count, pellet or powder quality, raw material feeding capacity, dehumidification effect, hopper seat cooling effect, hopper seat cooling water channel.
(2) Extrusion part of the screw structure, screw diameter ratio, compression ratio, screw speed, screw temperature control, one heating and cooling of the barrel, the temperature of each section, the distance between the perforated plate and the mold wind feed, plastic particles Main engine current, temperature control instrument and sensor, head melt pressure.
(3) mold part type, flow path size, die length section size, die section dimension size, die gap, compression ratio, template contact surface accuracy, mold and head interface, fastening medium bolt size And the number of the most, positioning pin accuracy, temperature control system.
(4) Plastic granule machine cooling part vacuum pipe, cooling water pipe, vacuum pump, water pump, water circulation cooling system, sizing die section size, sizing die length and number of segments, number of sizing die vacuum channels, sizing die cooling channel diameter and cooling uniformity , vacuum degree, setting mode opening and closing performance, shaping model cavity with sleeve length, vacuum of cooling water tank, length of cooling water tank, installation accuracy of setting block in cooling water tank, sufficient number of vacuum quick-change joints, cooling water flow, product cooling effect , the setting table movement accuracy.
(5) Traction speed and adjustment, traction force, clamping force, type of crawler long tractor, quality of clamping block, shape of special-shaped clamping block, lateral swing control of profiled material, tension control system.
(6) The plastic pellet machine tells you how to cut the cutting machine, automatically reset the cutting, the shape, and material of the sawtooth, the cutting stroke adjustment of the saw, the pneumatic system, the dust collection system, and the fixed length command receiving system.
(7) Turning frame and stacking frame (vehicle) fixed length command, turning frame length, pneumatic system, counting system, flip angle.
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