Method for manufacturing wind turbine blade mould

Abstract

The invention discloses a method for manufacturing a wind turbine blade mould, which is particularly applicable to fiber reinforced resin-based composite members such as large wind turbine blades, and comprises the following steps: 1, dividing and modularizing the surface of the mould according to blade design data offered by clients; 2, making a modular mould surface by using single-point step-by-step metal plate forming equipment, drilling and cutting; 3, detecting forming precision by using a laser scanner; 4, making and assembling a base keel frame of the mould; 5, welding a modular surface sheet metal part at a corresponding position of the base, reinforcing the back panel of the sheet and mounting a thermocouple; 6, detecting the precision of the surface of the welded and assembled wind turbine blade entire mould, grinding and polishing; and 7, mounting and debugging temperature control systems such as heating and cooling systems in the wind turbine blade mould. Due to the realization of digital control mould surface manufacturing, the manufacturing precision and smoothness of the curve of the mould surface are improved, the manufacturing period and economic cost of the wind turbine blade large composite mould are reduced, the service life of the mould is prolonged, the quality and static and dynamic balance keeping capability of the finished blades formed by the mould manufactured by the technology are improved, the rejection rate of the production of finished blade moulds is lowered, and production efficiency is improved.

Description

technical field [0001] The invention relates to a method for manufacturing a forming die, which is particularly suitable for the manufacturing method of a forming die for fiber-reinforced resin-based composite material components such as large wind power blades. Background technique [0002] Molds are the key to manufacturing wind power blades and other large resin-based fiber-reinforced composite components. The quality of the mold and the stability of the mold itself directly affect the production efficiency, product quality and production cost of these composite components. [0003] The traditional composite material wind turbine blade mold production is first to make the master mold, that is, the actual product sample, and then use the hand lay-up process to reproduce the mold on the master mold. [0004] At present, the master molds for making FRP molds are mostly made of gypsum, wood, cement, paraffin and other substrates. The master molds made of these materials often...

AI Technical Summary

Problems solved by technology

[0004] At present, the master molds for making FRP molds are mostly made of gypsum, wood, cement, paraffin and other substrates. The master molds made of these materials often have low dimensional accuracy, poor dimensional stability, poor surface quality, easy to produce pores and cracks, and relatively flatness. Poor, long production cycle, easily damaged mold, short service life

[0005] The main characteristics of the hand lay-up process are manual operation, mold opening, low production efficiency, long production cycle and low resin curing degree, which is suitable for the production of small batches, low quality uniformity requirements and composite products

Therefore, the main disadvantages of producing fan blades by hand lay-up process are that the product quality is highly dependent on the worker's operating proficiency and environmental conditions, the production efficiency is low, the product quality fluctuates greatly, the dynamic and static balance of the product is poorly guaranteed, and the scrap rate is high.

Especially for blades with complex aerodynamic shapes and sandwich structures with high performance, secondary processing such as bonding is often required. The bonding process requires bonding platforms or frames to ensure the bonding of the bonding surfaces, and the production process is more complex and difficulty

Problems in the use of blade molds manufactured by hand lay-up process are often due to cracks and cracks caused by large changes in the ratio of fiber to resin, poor fiber / resin infiltration and incomplete curing during the hand lay-up process.

In addition, the hand lay-up process is often accompanied by the release of a large amount of harmful substances and solvents, which will cause harm to the health of the operators and pollute the environment.

[0006] This traditional mold manufacturing cost is high, the cycle is long, and at the same time, it is difficult to transport and store due to the large size of the mold

Also, this type of mold typically has a shorter lifespan

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