Plastic outer knurling machine of high-frequency induction heating type steel tube for handrail

Abstract

The invention relates to a plastic outer knurling machine of a high-frequency induction heating type steel tube for a handrail. The plastic outer knurling machine is used for coating of metal tubes with various materials and sections, and is particularly used for knurling the handrails coated with the steel tubes of vehicles such as buses, school buses, tourist buses and metros, and guardrails coated with the steel tubes of environmental facilities such as parks and markets by plastic outer layers. The plastic outer knurling machine is composed of an inlet pipe station, a pinch device driven by a variable-frequency and variable-speed motor, a high-frequency induction pre-heating device, an infrared temperature measuring device, a plastic outer knurling device, a flow control air cooling device, an outlet pipe station and a control system. The plastic outer knurling machine is simple in structure, reliable to work, even in pre-heating temperature, and convenient to adjust. The plastic outer knurling machine has outstanding characteristics that the production efficiency is improved; the energy consumption is reduced; and the production cost is lowered, and the product quality is also improved.

Description

Technical field: [0001] The invention relates to a high-frequency induction heating steel pipe plastic outer layer knurling machine, which is used for plastic wrapping of metal pipes of various materials and cross-sectional shapes, especially for transportation such as buses, school buses, tourist buses, subways, etc. The plastic coated steel pipe handrail of tools and the plastic outer layer of the plastic coated steel pipe handrail of parks, shopping malls and other environmental facilities are knurled. The invention consists of a tube inlet station, a pinch device driven by a variable frequency speed regulating motor, a high frequency induction preheating device, an infrared temperature measuring device, a plastic outer layer knurling device, an air cooling device for flow control, a tube outlet station and a control unit. system composition. The invention has the advantages of simple structure, reliable operation, uniform preheating temperature and convenient adjustment. ...

AI Technical Summary

Problems solved by technology

[0003] Due to the low detection accuracy and control accuracy of the heating temperature in each area of ​​the furnace, it is difficult to match the delivery of the plastic-coated steel pipe with the preheating temperature, which affects the production efficiency; the heating temperature uniformity of the plastic-coated steel pipe in the preheating heating furnace is not high , resulting in inconsistent depth of knurling, and knurling after the outer layer of plastic is heated, the boundary of knurling is not smooth enough, which affects the processing quality of plastic-coated steel pipes; at the same time, the external heating of conventional electric heating furnaces consumes a lot of energy; In addition, the heating area is long and occupies a large area

[0004] The invention overcomes the technical defects existing in the existing plastic outer layer knurling machine, and solves the problems of poor product quality, low production efficiency, energy consumption and high production cost in the existing plastic outer layer knurling machine

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