Inner wall cleaning method for plastifying unit of large injection moulding machine

Abstract

The invention discloses an inner wall cleaning method for a plastifying unit of a large injection moulding machine. The inner wall cleaning method comprises the following steps: A, filling cleaning materials, and cleaning the plastifying unit; B, dismounting the plastifying unit and withdrawing a screw; C, performing cloth scrubbing; D, rotating and cleaning a copper brush; E, milling and cleaning; and F, performing inner wall observation. The inner wall cleaning method adopts the cleaning materials to fill the plastifying unit to clear injection-moulded raw materials in the plastifying unit,and the cleaning materials are discharged, so that workload and difficulty of follow-up cleaning of the plastifying unit can be greatly reduced. After the plastifying unit is dismounted and the screwis withdrawn, most of residual materials in the plastifying unit are cleared by high-temperature cloth at a forming plastifying temperature, and residual materials adhered on the inner wall of the plastifying unit can be effectively removed by using the copper brush to rotate and clean. A few stubborn residual materials adhered on the inner wall of the plastifying unit are completely stripped. Theinner wall cleaning method can completely remove the residual materials adhered on the inner wall of the plastifying unit, guarantees effectiveness on material change and impurity removal of the injection moulding machine, and is especially suitable for clearing the inner wall of the plastifying unit of the large injection moulding machine.

Description

technical field [0001] The invention relates to a method for cleaning the inner wall of a plasticizing unit of a large injection molding machine, which belongs to the technical field of cleaning the plasticizing unit of an injection molding machine. Background technique [0002] The plasticization quality of injection molding raw materials in the plasticization unit of the injection molding machine is one of the key factors determining the quality and performance of injection molded parts, especially for the molding of products with high requirements for appearance quality, and the situation of refueling molding on the injection molding machine Down. The plasticizing unit of a large injection molding machine (mold clamping force ≥ 40,000KN) has a large capacity, and the molding cycle of the molded product is generally longer. The injection molding raw materials stay in the plasticizing unit for a long time, even exceeding 1 hour. Long-term high-temperature residence is easy ...

AI Technical Summary

Problems solved by technology

However, for large-scale injection molding machines (≥40000KN), the stagnation time of injection molding raw materials in the plasticizing unit is usually long, the degradation and carbonization are serious, and a layer of residual material is tightly adhered to the inner wall of the plasticizing unit, relying solely on the friction of cleaning materials or plastic particles Cleaning can not make all the residues fall off, and can not realize the thorough cleaning of the inner wall of the cylinder of large injection molding machine

At the same time, the cleaning methods of the above patents do not observe and confirm the cleanliness of the inner wall of the plasticizing unit after cleaning, and only judge the plasticizing injection cleanliness of the injected raw materials after cleaning, there is a risk of incomplete cleaning and re-cleaning, resulting in A lot of waste of manpower, material resources and time