Macromolecule plastic membrane pressurized injection molding method and molding system

Abstract

The invention relates to a filtering machine used macromolecular plastic diaphragm shaping method and a system. Macromolecular plastifying plastic in molten state is fed into a pressure device and is pressurized and then injected into the shaping cavity of a macromolecular plastic diaphragm mould through the pressure device, and after being cooled and being formed, the mould is opened and diaphragms can be taken out. The invention has the advantages that: firstly, the plastic in molten state is quickly pressurized and then injected into the shaping mould of the macromolecular plastic diaphragm by adopting the pressure device, therefore the default in the background technique is avoided, and the manufacture of the macromolecular plastic thin wall diaphragm with super-wide format is realized; secondly, the design of the macromolecular hot runner shaping mould provided with a self-heating device can not only solve the manufacture of thin wall plastic diaphragm, but also greatly reduce production cost, improve production efficiency, and ensure steady and reliable product quality and good surface smoothness, therefore the technology problems which are required to be solved but actually not solved for a long time are solved.

Description

Technical field: [0001] The invention relates to a method for forming a polymer plastic diaphragm for a filter and a system for realizing the method, and belongs to the field of a method for forming a polymer plastic diaphragm and a forming system. Background technique: [0002] Patent No. 03101314.7, titled "Filter Press Plastic Diaphragm Injection Molding Method and Equipment", the plastic raw material in this method is heated and plasticized by the injection part of the injection molding machine, injected into the hot runner in the hot runner forming mold, and then enters through the heating nozzle The plastic diaphragm is molded in the cavity, cooled and shaped, and the diaphragm can be taken out after the mold is opened. In actual operation, the injection molding part of the injection molding machine is used to heat and plasticize the plastic raw materials, inject them into the hot runner in the hot runner forming mold, and then enter the cavity of the plastic diaphragm...

AI Technical Summary

Problems solved by technology

In actual operation, the injection molding part of the injection molding machine is used to heat and plasticize the plastic raw materials, inject them into the hot runner in the hot runner forming mold, and then enter the cavity of the plastic diaphragm mold through the heating nozzle for molding. The formed plastic diaphragm has problems Is: First, due to the high viscosity and density of the plasticized plastic after heating, it is impossible to quickly enter the cavity of the plastic diaphragm mold from the hot runner and heating nozzle in the hot runner forming mold, which directly affects the plastic diaphragm. Second, because the injection pressure generated by the injection molding part of the injection molding machine is far from meeting the pressure required for plastic diaphragm molding, the formed plastic diaphragm not only does not meet the requirements in density, but also has uneven thickness. Affects the forming quality and yield of the diaphragm

Images