Plastic and application thereof on case wheel bearing

Abstract

The invention relates to the field of cases, in particular to plastic for manufacturing a case wheel bearing and the case wheel bearing manufactured by the plastic. The plastic comprises the following components in parts by weight: 80-90 parts of POM (Polyoxymethylene) and 10-20 parts of PU (Poly Urethane). The plastic has good mechanical strength, abrasion resistance, corrosion resistance, self lubrication and low friction coefficient, and the impact resistance and the rigidity of the plastic can completely satisfy the performance requirements of the case wheel bearing and successfully break through the technical bottleneck of the plastic bearing on the case wheel application, so that the whole case wheel bearing is plasticized, thereby further reducing the cost of the case wheel bearing and bringing higher production benefits to enterprises. In addition, the plastic is formed by only proportioning the POM and the PU without adding any assistant and has the advantages of simplicity in processing, low cost and wide market application prospect.

Description

technical field [0001] The invention relates to the field of luggage, in particular to a plastic suitable for manufacturing luggage wheel bearings and a luggage wheel bearing made of the plastic. Background technique [0002] Bearings are components that fix and reduce the friction coefficient of loads during mechanical transmission. It can also be said that when other parts move relative to each other on the shaft, it is used to reduce the friction coefficient in the process of power transmission and keep the center of the shaft fixed. Bearings are an important part of modern mechanical equipment. Its main function is to support the mechanical rotating body to reduce the friction coefficient of the mechanical load during the transmission process of the equipment. According to the different friction properties of moving elements, bearings can be divided into two types: rolling bearings and sliding bearings. [0003] At present, luggage wheel bearings are mostly made of me...

AI Technical Summary

Problems solved by technology

However, if these plastic bearings are used in luggage wheels, plastics can only be used in the non-loaded parts of the bearings, but the loaded parts cannot be replaced by plastics. For example, the thrust ball bearings commonly used in universal wheels can be made of plastics. However, the balls cannot be made of plastic. The reason is that the load part of the luggage wheel bearing not only needs to have good rigidity and wear resistance, but also needs to withstand high impact loads and must have extremely high impact resistance. However, the existing plastic materials cannot meet the requirements of impact resistance, rigidity and wear resistance at the same time.

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