Heat insulation pad pressing mold with inclined nozzle back cover

Abstract

The invention discloses a pressing die for an insulation mat of a rear cover with canted nozzles and belongs to the field of forming dies; by utilizing the pressing die, pressure forming of the insulation mat of the rear cover with the canted nozzles can be realized, and the pressing die is especially suitable for the condition that the canted nozzles are brittle nozzles which cannot be subjected to higher pressure. The pressing die consists of a male die component, a female die component, a nozzle protection component and a connection part for the male die component, the female die component and the nozzle protection component. The defects that the nozzles can be easily fractured during forming performed by the die with a direct pressing-type structure and weld marks are easy to generate during forming performed by the die with an injection-type structure are overcome by the structure of the pressing die, and the pressing die has a broad application prospect and promotion value in the forming of the insulation mat of the rear cover with the canted nozzles; the pressing die disclosed by the invention has the prominent advantage that the problems that the nozzles can be easily crushed and the weld marks are easy to generate in the forming process of the insulation mat of the rear cover with the canted nozzles are solved without greatly improving prepreg fluidity.

Description

technical field [0001] The invention belongs to the field of molding dies, and relates to the pressing of a heat insulation pad with a rear cover of an inclined nozzle, which is applied to the molding of engine heat insulation layers. Background technique [0002] The rear cover of inclined nozzle is a common structural component of solid rocket motor. Heat insulation is an important measure to ensure the normal operation of the engine. Molding is the main process for forming the heat insulation layer of the back cover. For the back cover with inclined nozzles, when the direct pressure molding process is used, the nozzles often crack, and even if they are not broken, microcracks may occur , Seriously affect the safety of the engine work; and when the injection mold is used, because the molding material has many reinforcing fibers, the fluidity is not good enough, and weld lines often appear. There is no fiber at the weld line, mainly glue, which makes it easy to burn throu...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a heat insulation pad pressing mold with a rear cover with an inclined nozzle. Using this set of devices, it can meet the requirements of the mold with an inclined nozzle without greatly improving the fluidity of the prepreg. The forming needs of the heat insulation layer of the rear cover solves the heat protection problem of the rear cover with inclined nozzles, and the cost is low

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