Preparation method of collapsible steel die for manufacturing large-scale glass fiber reinforced plastic chimney

Abstract

The invention discloses a preparation method of a collapsible steel die for manufacturing a large-scale glass fiber reinforced plastic chimney. The preparation method mainly comprises preparation of a die body and a demoulding apparatus. The preparation method of the die for manufacturing the large-scale glass fiber reinforced plastic chimney provided by the invention has strong operationality and high production efficiency; the die is convenient for demoulding product and non-deformable, and can be used continuously for many times; and the product has good quality of an interior surface and accurate dimension. The method can overcome the disadvantages of poor quality of internal layer, low size precision and difficulty in jointing of a product manufactured by a die for glass fiber reinforced plastic chimney in the prior art, so as to improve quality of the glass fiber reinforced plastic chimney product and increase production efficiency.

Description

Technical field [0001] The invention relates to a method for preparing a mold for making glass fiber reinforced plastic chimneys, in particular to a method for preparing a shrinkable steel mold for making large glass fiber reinforced plastic chimneys. Background technique [0002] At present, the production molds that use more large-diameter FRP products are vertical winding molds or horizontal frame molds. [0003] The main shortcomings of winding during vertical winding are: the trolley moves vertically, there is no continuous operating platform, and the unidirectional cloth, dipping, and rolling bubbles are often disconnected, which affects the internal quality of the product; the demand for the amount of glue in the chimney product Higher, it is easier to flow glue during vertical winding, and the amount of glue in the product is not easy to control; in order to reduce the flow of glue during winding, the taper must be left when making the mold, which will cause unevenness in t...

AI Technical Summary

Problems solved by technology

[0003] The main defects of winding in vertical winding are as follows: the trolley moves vertically, there is no continuous operating platform, and it is often out of joint when winding unidirectional cloth, dipping, and rolling air bubbles, which affects the internal quality of the product; the glue content requirement of chimney products Higher, it is easier to flow glue during vertical winding, and the glue content of the product is not easy to control; in order to reduce the glue flow during winding, it is necessary to leave a taper when making the mold, which will cause the phenomenon of uneven product joints, which is not conducive to installation; The skin of the type winding mold is generally covered with five-ply board, which is easy to be damaged and has poor durability.

[0004] The main defects of horizontal frame mold winding are as follows: there are seams and poor rigidity on the surface of the mold, and the product cannot be fully rolled; when demolding, the whole mold needs to be dismantled from the inside, making the mold easily deformed, and the surface of the product The quality is difficult to control; and the defect of insufficient rigidity also makes it unable to meet the continuous production of large batches

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