Foire aux questions Comment faire l’entretien de la matrice d’extrusion de tuyaux en PVC

Comment faire l’entretien de la matrice d’extrusion de tuyaux en PVC

February 24, 2022

La matrice d’extrusion de la ligne de production de tuyaux en PVC joue un rôle essentiel dans la ligne de production, et la qualité du tuyau en PVC est étroitement liée à la qualité de la matrice d’extrusion. Guangdong Blesson Precision Machinery Co., Ltée. can provide PVC pipe extrusion die from Φ16MM to Φ1000MM.The PVC pipe extrusion die designed by Blesson adopts a shunt shuttle bracket type die, avec une conception optimale des coureurs, et une structure de moule facile à démonter pour assurer l’effet de plastification du PVC, améliorer les performances d’écoulement du matériau.

PVC Pipe Extrusion Die By Blesson Precision Machinery

PVC Pipe Extrusion Die By Blesson Precision Machinery

PVC Pipe Extrusion Die By Blesson Precision Machinery

PVC Pipe Extrusion Die By Blesson Precision Machinery

When using PVC extrusion die daily, pay attention to the use and maintenance of extrusion die to avoid damage to the mold due to improper operation or lack of maintenance.

The following points should be noted in the use and maintenance of PVC extrusion die:

  • The heater for the inner cavity of the die shall be installed before the die places on the die bracket/Mould car, and the heater for the outer surface of the die shall be installed after the die places on the die bracket/Mould car.
  • The installation surface of the heater and the corresponding installation surface of the die should be both cleaned.
  • After installation and fastening, the heater should be tightened again after heating to a certain temperature.
  • The thermocouple holder /seat should be cleaned up timely for measurement accuracy.
  • Thermocouple measurement value need to be corrected before working.
  • After replacing other specification of die/ mold/mould, the heater on the surface of the bush must be removed first.
  • When removing the die/mold/ mould for cleaning, use a soft scraper or a copper brush to clean away the residual resin. Do not use steel tools to avoid damaging the surface of the runner. Paraffin or solvent could be used as supplemental cleaner.
  • Prepare clean and wide enough places before disassembly.
  • The disassembly should be carried out quickly. After disassembly, the working surface should be protected by paraffin and protective agent.
  • Disassembly and installation of the die/mold/mould should be carefully operated. Do not damage the working surface and the heating wire of the inner cavity. If any damage happens, the area could be polished with metallographic sandpaper to even and smooth.
  • During the assembly process, the runner surface of the die/mould /mold should be coated with a thin layer of organ silicon ester for long-time protection.
  • During assembly, all bolts, screw bearing surfaces and flight must be coated with high temperature grease, such as molybdenum stone or graphite grease. That will benefit the extrusion die /mould/mold and be good for disassembly. Besides, the bolts should be tightened again after heating.
  • Fasten each screw in diagonal order to avoid the material leakage.
  • Adjustment of bush clearance could be completed by adjusting all associated screws. Single screw adjustment can’t work.
  • Don’t touch the die/mold/mould when it is working. Wear heat-insulating gloves when disassembling the die/mold/mould with utmost caution.
High-quality PVC Pipe Extrusion Die By Blesson Precision Machinery

High-quality PVC Pipe Extrusion Die By Blesson Precision Machinery

The above operating instructions and maintenance instructions are compiled by the professional R&D and technical personnel of Blesson for your reference. Our company will further improve the instructions according to the design of the extrusion die. If you want to know more information about the PVC extrusion die, s’il vous plaît contactez-nous.

 

 

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