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Wind power blade main beam sheet pultrusion impregnation device, die, equipment and method

A technology of pultrusion and wind power blades, which is applied in the field of wind power blade main girder sheet pultrusion dipping devices, can solve problems such as weak bearing capacity, poor performance, uneven impregnation of fibers, etc., to reduce physical damage, No harmful gas volatilization, the effect of improving the impregnation effect

Active Publication Date: 2020-05-19
北玻院(滕州)复合材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent document CN 109372708A discloses a structure and manufacturing method of a wind power blade main girder or auxiliary girder, which uses boards, low-area density fabrics and resins, and the boards are superimposed on each other in both the chord and longitudinal directions to improve production efficiency purpose, but in the structure of the main beam and auxiliary beam manufactured by this method, the splicing seam between the plates is the weak link of its load bearing
However, the glue tank is usually an open structure, and the glue in the glue tank is easily affected by the external temperature and humidity, which will cause the viscosity of the glue to change and the fiber impregnation to be uneven; The amount of glue is large, and it is easy to make the glue concentration distribution uneven when placed for a long time; there will also be problems such as unstable fiber arrangement during the molding process, resulting in poor performance of the final product; in addition, the existing pultrusion Poor process control in glue, heating and curing stages, poor control of fiber content, resulting in uneven distribution of resin and fibers in the final product, poor curing effect, and poor performance of the final product

Method used

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  • Wind power blade main beam sheet pultrusion impregnation device, die, equipment and method
  • Wind power blade main beam sheet pultrusion impregnation device, die, equipment and method
  • Wind power blade main beam sheet pultrusion impregnation device, die, equipment and method

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Experimental program
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Effect test

Embodiment 1

[0055] Such as figure 1 , figure 2 As shown, a closed dipping device for pultrusion forming of a main beam sheet of a wind power blade described in this embodiment includes: a dipping mold 1 and a plurality of glue injection devices 2; the dipping mold 1 includes a closed first The mold cavity 11 and the first heating device located outside the first mold cavity 11; the first mold cavity 11 is provided with an inlet and a discharge port, and the first mold cavity 11 is also provided with a glue injection holes 13; the glue outlets of multiple glue injection devices 2 are connected to the glue injection holes 13, suitable for injecting glue into the first mold cavity 11.

[0056] Wherein, the closed first mold cavity has the same cross-sectional shape as that of the product to be formed, only the feed inlet and the discharge port are open, and the rest of the walls are closed mold cavities.

[0057] The working process of the closed rubber dipping device of the pultrusion mo...

Embodiment 2

[0076] The wind power blade main girder sheet pultrusion molding equipment structure adopted in this embodiment is the same as that in Embodiment 1, the difference is that: the length of the first cavity is 20 cm; the length of the heating section in the curing molding mold is 30 cm; the length of the gel section is 40cm; the length of the curing section is 30cm.

[0077] The pultrusion forming method of the wind power blade main beam sheet in this embodiment is specifically as follows:

[0078] S1. The fiber material is led out from the creel, separated by the sand plate, arranged by the preformed plate, then penetrated into the dipping mold, passed through other molds in the pultrusion mold, and then reaches the traction device through the curing oven, and is drawn by Machine traction production, the traction speed is 0.35m / min;

[0079] S2. Add the first resin glue solution to a precision glue injection machine and preheat it at 65°C for 10 minutes. Add the second resin gl...

Embodiment 3

[0082] The wind power blade main girder sheet pultrusion molding equipment structure adopted in this embodiment is the same as that in Embodiment 1, the difference is that: the length of the first cavity is 40 cm; the length of the heating section in the curing molding mold is 35 cm; the length of the gel section is 30cm; the length of the curing section is 35cm.

[0083] The pultrusion forming method of the wind power blade main beam sheet in this embodiment is specifically as follows:

[0084] S1. The fiber material is led out from the creel, separated by the sand plate, arranged by the preformed plate, then penetrated into the dipping mold, passed through other molds in the pultrusion mold, and then reaches the traction device through the curing oven, and is drawn by Machine traction production, the traction speed is 0.8m / min;

[0085] S2. Add the first resin glue solution to a precision glue injection machine and preheat it at 50°C for 10 minutes. Add the second resin glu...

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Abstract

The invention provides a wind power blade main beam sheet pultrusion impregnation device, die, equipment and method. The pultrusion impregnation device comprises an impregnation die and a plurality ofglue injection devices, wherein the impregnation die comprises a closed first die cavity and a first heating device arranged outside the first die cavity, a feeding hole and a discharging hole are formed in the first mold cavity, glue injection holes penetrating into the first mold cavity are further formed in the first mold cavity, glue outlets of the glue injection devices are connected with the glue injection holes, and the glue injection devices are suitable for injecting glue liquid into the first mold cavity. According to the wind power blade main beam sheet pultrusion impregnation device, mold, equipment and method, the influence of environmental factors on the glue liquid performance can be avoided, the glue liquid is mixed and used immediately, the concentration uniformity is high, the fiber positioning trend is accurate and controllable, the length and temperature of each section in the die are further controlled, and the fiber material content is controlled, so that the impregnation effect and the curing effect are guaranteed, and the prepared product has better performance.

Description

technical field [0001] The invention belongs to the field of production equipment for composite material products, and in particular relates to a dipping device, a mould, a device and a method for the pultrusion forming of a main girder sheet of a wind power blade. Background technique [0002] Wind power blades are mostly infused with glass fiber reinforced composite materials, which have good strength and rigidity. However, as the development of blades tends to increase in size, the weight of blades will increase exponentially. This obviously does not meet the requirements of lightweight and low-cost blades. Therefore, it has become an important research direction for the wind power industry to find raw materials with lighter weight and higher cost performance, and to explore molding processes with high molding quality, high production efficiency, and low production cost. Chinese patent document CN 109372708A discloses a structure and manufacturing method of a wind power b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/52B29C70/54
CPCB29C70/523B29C70/525B29C70/526B29C70/528B29C70/54B29C70/521
Inventor 张为军王淑霞于航毛雅赛陈锋刘辉毛义梅
Owner 北玻院(滕州)复合材料有限公司
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