The slow adjustment speed of blow molding machines mainly involves several key steps and precautions to ensure the quality and production safety of plastic products. Here are some specific conditioning methods:
Debugging of plasticizing system: Ensure that the heater of the plasticizing system is uniformly fixed, and that the heater and the heated surface are tightly adhered. For mica heaters, gently tap to ensure a tight fit, which helps to evenly heat and extend the service life of the heater. Thermocouple probes should have sufficient spring preload to ensure accurate temperature measurement.
Adjustment of the oil storage cylinder mold head: The clamping bolt should not be fully tightened, and should be gently pressed to leave space for the thermal expansion and contraction of the gun barrel. The axis of the gun barrel should be kept straight to avoid bending.
The use of cooling water: Before heating, it is necessary to turn on the cooling water of the barrel and the die to prevent blockage and blockage of the feeding part of the barrel, and to prevent premature aging.
Safety measures: Place a magnetic frame in the hopper to prevent iron filings from entering the screw, thereby damaging the screw and mold parts or blocking the mold passage. When starting the chiller, it is usually recommended to reduce the extrusion speed and gradually increase the speed to avoid incorrect wall thickness tracking and melt fracture.
Lubrication and maintenance: Lubricate all parts that require lubrication treatment, including water pipe junctions and other pipeline connections, to ensure that these parts can operate smoothly. Ensure that all travel switches are in the designated positions. Travel switches control the movement and stop of the moving template. By adjusting the travel switches properly, the operation of the moving template is guaranteed.