Special-shaped thin-wall conical cylindrical shell liner high-density rigid polyurethane foam insulation blanket layer covering and forming method and device

Abstract

The invention relates to a special-shaped thin-wall conical cylindrical shell liner high-density rigid polyurethane foam insulation blanket layer covering and forming method and a device, which belongto the technical field of polyurethane foaming and forming, and aim to solve the problems that a thin-wall conical cylindrical shell is deformed during a rigid foam covering process and the rigid foam density cannot meet the requirement. The upper end and the lower end of a foaming barrel are connected with a lower positioning and foaming barrel through a bolt and a seal cover; a plurality of first pre-flight cushion blocks are arranged on a lower end face of the seal cover and a barrel bottom of the lower positioning and foaming barrel; the special-shaped thin-wall conical cylindrical shellis located in the foaming barrel; and the upper end and the lower end of the special-shaped thin-wall conical cylindrical shell are fixed onto the first pre-flight cushion blocks through first positioning pins. According to the special-shaped thin-wall conical cylindrical shell liner high-density rigid polyurethane foam insulation blanket layer covering and forming method and the device provided by the invention, a cylinder wall can be prevented from being deformed during a special-shaped thin-wall conical cylindrical shell piece inner cavity foaming, covering and forming process, and meanwhile, high density after polyurethane foaming, covering and forming is effectively ensured.

Description

Technical field [0001] The invention relates to a method and device for covering and forming a heat-insulating liner layer of high-density polyurethane hard foam lining, in particular to the covering forming of a heat-insulating liner layer of special-shaped thin-walled cone shell lining high-density polyurethane hard foam The method and device belong to the technical field of polyurethane foam molding. Background technique [0002] The existing process for the special-shaped thin-walled cone-shaped shell (cast aluminum machine addition) is lined with high-density polyurethane hard foam heat insulation liner layer: 1) The hard foam is poured on the inner wall of the shell, and then the excess hard The bubble is removed, and the inner surface of the insulation liner is repaired; 2) In order to avoid trimming the inner surface, the inner core mold can be made according to the shape of the inner surface of the insulation liner. The inner core mold and the shell The hard foam is pou...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a thin-walled conical shell lined with a high-density polyurethane hard foam heat insulation liner coating method and device, to solve the deformation and problems of the thin-walled conical shell in the process of covering the hard foam. The problem that the density of hard foam cannot meet the requirements

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