Making apparatus and method for wet type sanding and enwinding glass fibre reinforced plastic pipe from underside

Abstract

The present invention relates to an equipment for making GFRP pipe by adopting wet sand-adding lower-winding process and method thereof. Said equipment is mainly formed from working table, running carriage, winding system, sand-adding system, mould and mould-supporting frame. Said invention also provides their connection arrangement and working mode. Said invented winding and sand-adding processes can be implemented under the GFRP pipe, and adopts wet sand-adding process so as to reduce dust pollution, and can raise working efficiency.

Description

technical field [0001] The invention relates to a manufacturing device and method of a glass fiber reinforced plastic pipe with sand added, in particular to a manufacturing device and method of a wet sand added wound glass fiber reinforced plastic pipe. Background technique [0002] FRP sanded pipe is a kind of composite material pipe, which is made by adding a mixed layer of quartz sand and resin with a certain thickness in the middle of two wound glass fiber layers, which can increase the strength and fire resistance of the FRP pipe. At present, ordinary FRP pipes are made on the upper winding machine by dry sanding method, that is, after the glass fiber inner lining layer is made on the FRP pipe mold, the dry quartz sand is flattened on the upper part of the rotating pipe by the conveyor belt, and at the same time Wrap the sand in a layer of cloth tape and drizzle resin over the outside of the cloth. In this process, because the resin penetrates into the quartz sand comp...

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Problems solved by technology

In this process, because the resin penetrates into the quartz sand completely by its own fluidity, there will often be problems of resin infiltration or uneven penetration, which will affect the quality of the product; It can only achieve a sanding thickness of 5-8mm at one time, and to achieve the design thickness, it is necessary to perform multiple sanding operations, so the work efficiency is low; in addition, there is a serious dust phenomenon during sanding, which not only pollutes the environment, but also Affect the health of operators; especially in the process of adding sand, the amount of resin added cannot be measured, often resulting in excess resin, which requires the operator to scrape off the excess resin, resulting in serious waste

In addition, due to the increasing requirements for the diameter of FRP pipes, some even require more than 4m, while ordinary upper winding machines add sand to the upper part of the pipes, so general workshops cannot meet the requirements; in addition, operators working at heights will also It brings hidden dangers to personal safety, so this kind of upper winding machine cannot complete the production of large FRP pipes at all

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