1. A method for continuously producing a pultruded epoxy glass fiber board for an ultra-long time is characterized by comprising the following steps:

1) withdrawing yarn from the creel: pulling the yarns out of the yarn groups and gathering the required number of yarns together by a creel device;

2) yarn unfolding and yarn guiding: guiding the yarns from the yarn group to the next step, and enabling the yarns to be twisted and relieved through yarn unfolding and to be soft;

3) dipping glue in a double glue tank: fully soaking the yarns in a glue dipping tank, wherein the glue dipping tank comprises a first glue dipping tank and a second glue dipping tank; firstly, immersing the yarns into a first impregnation tank, and then immersing the yarns immersed into the first impregnation tank into a second impregnation tank; when the yarn is immersed into the second impregnation tank, cleaning the first impregnation tank; cleaning the second impregnation tank when the non-impregnated yarn is immersed into the first impregnation tank, and repeating the steps to avoid the occurrence of old glue;

4) preforming: the fully gummed yarn is preformed to reach the required shape;

5) curing and molding the mold: molding and curing through a mold;

6) and curing the mixture by a post-curing oven to obtain a qualified product.

2. The method of continuously producing pultruded epoxy glass fibre panels according to claim 1, for an extended period of time, characterized in that: in the step 3), the whole gum dipping process is carried out in a gum dipping device, and the gum dipping device is respectively a first threading plate, a first gum dipping tank, a first gum pressing rod, a second threading plate, a first five-layer gum pressing rod, a second gum dipping tank, a second gum pressing rod and a second five-layer gum pressing rod from left to right; in the preparation process of the yarn, the yarn enters two yarn threading plates in five layers, a yarn pressing device of a first glue dipping tank is pressed down, a first glue pressing rod is equipped, and a glue backflow device is installed; and after the old glue appears, the glue backflow device is disassembled, the yarn pressing device of the second glue dipping tank is installed, the first glue pressing rod is disassembled, the second glue pressing rod is installed, and the glue backflow device of the second glue dipping tank is installed.

3. The method of continuously producing pultruded epoxy glass fibre panels according to claim 2, wherein: the arrangement of the yarn penetrating holes of the first yarn penetrating plate and the second yarn penetrating plate is 5 multiplied by 40.

4. The method of continuously producing pultruded epoxy glass fibre panels according to claim 2, wherein: and the first and second glue pressing rods are plated with chrome to increase the smoothness.

Background

The wind power blade main beam is a main bearing component of the wind power blade and controls the overall rigidity and the ultimate strength of the wind power blade in the wingspan direction. With the development of wind power to low wind speed and at sea, the size of the blade is larger and larger, the self weight and the bearing requirements of the blade are also larger and larger, and great challenges are brought to the design of a wind power complete machine and the blade. The pultruded plate is used for manufacturing the wind power blade, and the carbon fiber pultruded plate is firstly adopted, has the performance advantages of high specific strength and high specific modulus, can meet the strength and rigidity requirements of large wind power blade structural members, and obviously reduces weight. Although carbon fiber has obvious performance advantages, the disadvantage of high cost is obvious, and the main beam cap of the wind power blade is manufactured by adopting a glass fiber pultrusion plate at the present stage.

The pultruded epoxy glass fiber board is used for manufacturing a main beam cap of a wind turbine blade, is developed on the basis of a carbon fiber pultruded board, has the main board specifications of 105 multiplied by 5mm, 150 multiplied by 5mm and 200 multiplied by 5mm at the present stage, mainly adopts glass fiber with the modulus of more than 95GPa, adopts special pultruded epoxy resin and other non-main raw materials, and is produced by a pultrusion production line.

At present, in the production process, particularly after 5-10 days of production, the problems of increased surface defects, reduced mechanical property of the plate in the 90-degree direction, reduced fatigue property and the like are caused after the old glue appears due to excessive reaction of resin in the use process. The influence of the old glue on the production efficiency, once the old glue is generated, the product can have serious defects when not cleaned in time, and the continuous production is interrupted until the machine is stopped.

Disclosure of Invention

The invention aims to solve the technical problems and provides a method for continuously producing pultruded epoxy glass fiber boards for an ultra-long time.

The technical scheme for realizing the invention is as follows: a method for continuously producing a pultruded epoxy glass fiber board for an ultra-long time is characterized by comprising the following steps:

1) withdrawing yarn from the creel: pulling the yarns out of the yarn groups and gathering the required number of yarns together by a creel device;

2) yarn unfolding and yarn guiding: guiding the yarns from the yarn group to the next step, and enabling the yarns to be twisted and relieved through yarn unfolding and to be soft;

3) dipping glue in a double glue tank: fully soaking the yarns in a glue dipping tank, wherein the glue dipping tank comprises a first glue dipping tank and a second glue dipping tank; firstly, immersing the yarns into a first impregnation tank, and then immersing the yarns immersed into the first impregnation tank into a second impregnation tank; when the yarn is immersed into the second impregnation tank, cleaning the first impregnation tank; cleaning the second impregnation tank when the non-impregnated yarn is immersed into the first impregnation tank, and repeating the steps to avoid the occurrence of old glue;

4) preforming: the fully gummed yarn is preformed to reach the required shape;

5) curing and molding the mold: molding and curing through a mold;

6) and curing the mixture by a post-curing oven to obtain a qualified product.

In the step 3), the whole gum dipping process is carried out in a gum dipping device, and the gum dipping device is respectively a first threading plate, a first gum dipping tank, a first gum pressing rod, a second threading plate, a first five-layer gum pressing rod, a second gum dipping tank, a second gum pressing rod and a second five-layer gum pressing rod from left to right; in the preparation process of the yarn, the yarn enters two yarn threading plates in five layers, a yarn pressing device of a first glue dipping tank is pressed down, a first glue pressing rod is equipped, and a glue backflow device is installed; and after the old glue appears, the glue backflow device is disassembled, the yarn pressing device of the second glue dipping tank is installed, the first glue pressing rod is disassembled, the second glue pressing rod is installed, and the glue backflow device of the second glue dipping tank is installed.

The arrangement of the yarn penetrating holes of the first yarn penetrating plate and the second yarn penetrating plate is 5 multiplied by 40.

And the first and second glue pressing rods are plated with chrome to increase the smoothness.

The invention has the beneficial effects that:

the invention can delay the generation of the old glue, solve the problem of the old glue, better control the field production, realize continuous production without stopping the machine and further improve the production efficiency.

Drawings

FIG. 1 is a schematic structural diagram of the impregnation apparatus of the present invention.

Reference numbers in the figures: 1-a first threading plate, 2-a first glue pressing rod, 3-a second threading plate, 4-a fifth glue pressing rod, 5-a second glue pressing rod, 6-a fifth glue pressing rod, 7-a first glue dipping tank and 8-a second glue dipping tank.

Detailed Description

As shown in fig. 1, a method for the continuous production of pultruded epoxy glass fiber boards for an extended period of time, comprising the steps of:

1) withdrawing yarn from the creel: pulling the yarns out of the yarn groups and gathering the required number of yarns together by a creel device;

2) yarn unfolding and yarn guiding: guiding the yarns from the yarn group to the next step, and enabling the yarns to be twisted and relieved through yarn unfolding and to be soft;

3) dipping glue in a double glue tank: fully soaking the yarns in a glue dipping tank, wherein the glue dipping tank comprises a first glue dipping tank 7 and a second glue dipping tank 8; firstly, immersing the yarns into a first impregnation tank 7, and then immersing the yarns immersed into the first impregnation tank 7 into a second impregnation tank 8; when the yarn is immersed into the second impregnation tank 8, cleaning the first impregnation tank 7; cleaning the second impregnation tank 8 when the non-impregnated yarn is immersed into the first impregnation tank 7, and repeating the steps to avoid the occurrence of old glue;

4) preforming: the fully gummed yarn is preformed to reach the required shape;

5) curing and molding the mold: molding and curing through a mold;

6) and curing the mixture by a post-curing oven to obtain a qualified product.

In the step 3), the whole gum dipping process is carried out in a gum dipping device, and the gum dipping device is respectively a first threading plate 1, a first gum dipping tank 7, a first gum pressing rod 2, a second threading plate 3, a first five-layer gum pressing rod 4, a second gum dipping tank 8, a second gum pressing rod 5 and a second five-layer gum pressing rod 6 from left to right; in the preparation process of the yarn, the yarn enters two yarn threading plates in five layers, a yarn pressing device of a first glue dipping tank 7 is pressed down, a first glue pressing rod 2 is equipped, and a glue backflow device is installed; and after the old glue appears, the glue backflow device is removed, the yarn pressing device of the second glue dipping tank 8 is installed, the first glue pressing rod 2 is removed, the second glue pressing rod 5 is installed, and the glue backflow device of the second glue dipping tank 8 is installed.

The specifications of the pultruded girder plate mainly produced by the invention comprise 105 multiplied by 5mm, 150 multiplied by 5mm and 200 multiplied by 5mm, the sizes of the adopted first and second yarn threading plates 1 and 3 are 450 multiplied by 200mm, the arrangement of the yarn threading holes on the yarn threading plates is 5 multiplied by 40, and the aperture is phi 6 mm; the first and second glue pressing rods 2 and 5 are provided, the diameter of each glue pressing rod is phi 16mm, and smoothness is increased by chromium plating; the first five-layer glue pressing rod and the second five-layer glue pressing rod are 4 and 6, the diameter of each glue pressing rod is phi 16mm, and smoothness is increased by chromium plating; the first and second glue dipping tanks 7 and 8 are used for containing glue solution.