Glue-injection unit of glass fiber reinforced plastic tubular product pultrusion glue-injection device and glue-injection mold

Abstract

A glue injection unit of a glass fiber reinforced plastic tubular product pultrusion glue-injection device and a glue-injection mold relate to a device that dips glue solution in pultrusion equipment and leads glass yarn and felt to be compounded and thermoset so as to form continuous sectional materials, wherein the glue-injection unit comprises the glue-injection mold and a mandrel capable of leading glass fiber reinforced plastic sectional material to hollowly enter a pultrusion mold, wherein the glue-injection mold is provided with a mandrel through hole through which the mandrel can pass, injection cavities are arranged along the mandrel through hole and a subpressure cavity is arranged between adjacent injection cavities. The glue injection mold arranged for the glue-injection unit of the proposal helps reasonably configure the structure of the injection cavities and the subpressure cavities, thus being capable of realizing the work of dipping the glass yarn and felt by injecting glue solution in a closed mold device, not only effectively avoiding the problem of free volatilization of the glue solution, but also effectively ensuring the stability of viscosity of the glue solution in the whole pultrusion process. The proposal provides two implementation solutions of an integral forming mold and a mold type block, thus being easier for industrial promotion.

Description

technical field [0001] The invention belongs to the field of pultrusion molding equipment for composite materials, and relates to equipment for thermosetting glass yarn and felt into a continuous profile, in particular to a glue injection unit and a mold of a glue injection device for pultruding glass steel tubes. Background technique [0002] In the known FRP pultrusion molding machine, the glass yarn and the felt are released freely from the creel and the felt frame respectively by the traction mechanism, so that the glass yarn and the felt are dipped in the glue solution through the glue tank, and then passed through the pultrusion tooling frame. The gauze board and the felt sleeve enter the mold after the preforming mold, and the mold is surrounded by the heating sleeve, heated, and the glass yarn felt soaked in the glue is solidified and formed through the inner cavity of the mold, and is compressed by the traction mechanism and drawn out to become a continuous profile p...

AI Technical Summary

Problems solved by technology

[0005]In the existing pultrusion molding equipment, glass yarn and felt are usually soaked with glue in the open glue tank, and the work will be difficult due to the volatility of the glue. The environment is not environmentally friendly, and it is difficult to guarantee the stability of the glue viscosity during the pultrusion process, which directly affects the product quality; the industry urgently needs the technology that can effectively control the volatilization of the glue to achieve environmentally friendly production

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