TWM588625U - Flange vacuum-pressure molding machine for jointing wind-powered electric blade - Google Patents

Abstract

This invention creates a vacuum pressure-molding device for the bonding flange of wind power blades, which is applied to megawatt-level fan blades. The bonding flange is mainly used to strengthen the strength of the front and rear edges of wind power blades. By improving the assembly and assembly of the mold Positioning structure, by positioning flange pieces, bushings, sealing washers, positioning screws, nuts and other components, so that it can be accurately and quickly installed on the flange of the blade shell mold, with the help of the sealant strip to help the vacuum The bag is laid on the outside of the bonding flange mold, and the air is vacuumed to form a vacuum seal and pressurized. After the resin is cured, the bonding flange mold is removed to obtain a solid bonding flange. The fan blade shell When the body is glued, the structure of the bonding flange is dense and the size is accurate. The good glue makes the strength of the blade strengthened for its purpose.

Description

Vacuum pressurizing die device for bonding flange of wind power blade

This creation relates to a vacuum-pressurized mold device for bonding flanges of wind power blades, in particular to a mold device for bonding flanges of megawatt-level wind power blades that uses improved vacuum pressure and positioning structure.

Please refer to FIG. 1, which is a schematic cross-sectional structure diagram of a common wind power blade. The main structure of a general large-scale wind power blade 10 is an SS blade shell 20 and a PS blade shell 30, a beam 40, and a web 50 made of composite materials. And other components; each component is assembled into the wind power blade 10 according to the structural design requirements and using the structural adhesive bonding process to assemble the foregoing components. In the overall structure of the wind turbine blade 10, the bonding part is a structurally weak part, especially at the position where the blade leading edge 60 (Leading Edge) is bonded. In practice, most of the damage of the wind turbine blade 10 starts from the blade leading edge 60 The reason is that when the wind turbine blade 10 is in the operating state, the blade leading edge 60 is the impact surface that the wind cuts in. According to the stress state of the blade leading edge 60, if the strength of the blade leading edge 60 can be ensured, the wind power can be guaranteed The blade 10 is safe to use and reduces the degree of damage.

In the prior art, a more common reinforcement method for the leading edge of the blade 60 and the leading and trailing edges of the blade is tied to the inner side of the blade structure, and an adhesive flange 70 is added to increase the bonding of the SS blade shell 20 and the PS blade shell 30 The bonding area of the wind turbine blade 10 is partially strengthened with the aid of the reinforcement of the bonding flange 70 to achieve the purpose of strengthening the strength of the blade; the bonding flange 70 is produced by infusion molding in the SS blade shell 20 After that, tear off the vacuum material of the part where the bonding flange 70 is to be set, place the bonding flange module 80 on the flange of the blade shell module 90 according to the profile position, and adjust the bonding flange module 80 The front and back positions are positioned and fixed by positioning pins or positioning hinges 801, and the glass fiber reinforced cloth is laid on the bonding flange module 80 by hand lay-up operation and coated with epoxy resin, and the hand lay glass fiber cloth layer is cured After forming, the bonding flange module 80 is removed, so that the formed bonding flange 70 conforms to the shape of the inner arc surface of the blade PS blade shell 30. When the SS blade shell 20 and the PS blade shell 30 are closed together Coated with structural glue to achieve the purpose of assisting the formation of the shell of the wind power blade 10.

Among them, the shape of the bonding flange mold is made according to the shape of the bonding position of the inner and side surfaces of the front and rear edges of the PS blade shell 30 of the wind power blade 10, the purpose is to ensure that the bonding flange 70 can be connected with the wind power blade The inner curved surfaces of the PS blade shell 30 of 10 are closely bonded together, so as to ensure that the thickness of the bonding layer of the structural adhesive is uniform, please refer to FIG. 2 and FIG. 3.

However, in practice, the bonding flange 70 has various problems as listed below in the manufacturing operation, which are briefly listed as follows: 1. When hand-gluing the glass fiber cloth, the glass fiber cloth layer is impregnated with epoxy resin The glue is uneven, and semi-dry wire phenomenon occurs after curing, which makes the structural strength of the manufactured adhesive flange 70 insufficient, and the purpose and effect of strengthening the leading edge 60 and trailing edge structures of the blade are greatly reduced. 2. Since the glass fiber cloth is used to make the bonding flange 70 by manual hand lay-up, if the operator is not skilled enough, the technology of rolling bubbles is not in place, resulting in residual air bubbles between the layers of the glass fiber cloth, resulting in delamination, making the production The structural strength of the bonded flange 70 is insufficient, which affects the effect of strengthening the structure of the leading edge 60 and the trailing edge of the blade. 3. Because the glass fiber cloth is adhered to the inside of the bonding flange mold, although the shape of the bonding flange mold is attached, the glass fiber cloth will still be caused by the weight of the multi-layer laying and the resin infiltration. The sag of gravity causes displacement and deformation of the cured adhesive flange 70, which exceeds the design gap of the bonding surface structure with the PS blade shell 30, resulting in an increase in the amount of structural adhesive due to the amount of deformation filled, in addition to the amount of structural adhesive In addition to rising and increasing costs, it is not conducive to the control of the weight of the wind turbine blade 10, which causes technical problems. In addition, the use of too thick structural adhesive will increase the generation of defects such as voids and bubbles in the adhesive layer and reduce structural adhesion.接 Strength. 4. According to the third point above, the glass fiber cloth sags down due to gravity, which causes the glass fiber to bend and the strength of the bonding flange 70 is affected. In order to meet the strength requirements, repair work is required, thus increasing the blade manufacturing work Working hours.

As mentioned above, there are still some omissions in the manufacturing technology of the bonding flange in the conventional technology, and those who need to be improved urgently; in view of the above-mentioned lack of various conventional technologies, the creators have concentrated on the research with many years of experience in the field of wind power blades. Finally developed the vacuum flange pressurized die device for the bonding flange of the original wind power blade.

The main purpose of the vacuum flange pressurizing die device for the bonding flange of the wind power blade created in this creation is to use the mold to match the vacuum pressurization method to solve the problem of the glass fiber reinforced cloth layer sag due to gravity and the inaccuracy of the split layer; the next purpose is to The modification of the bonding flange mold positioning device is used to prevent air leakage at the edge of the sealed vacuum bag and affect the vacuuming effect.

The adhesive flange vacuum pressurizing mold device of the wind blade created by the invention is used to connect a bonding flange mold and a blade shell mold, which includes: a positioning flange piece which is arranged on the blade shell mold In an assembly part, and the positioning flange piece corresponds to the bonding flange mold, and the bonding flange mold is stacked with one end on one end of the blade shell mold, and the other of the bonding flange mold One end and the other end of the blade shell mold extend in the opposite direction in an arc, in addition, a sealing gasket is further stacked on the side of the positioning flange piece corresponding to the flange mold; a positioning screw, which is assembled by the The part extends vertically toward the bonding flange mold, and the positioning screw penetrates the positioning flange and the lower sealing washer, and an outer thread is further ringed on the top peripheral side of the positioning screw; a bushing is installed on One of the perforations provided in the bonding flange mold corresponds to the positioning screw, and the superposition of the blade shell mold and the bonding flange mold penetrates the bush with the positioning screw; and one The nut, which is locked to the positioning screw and penetrates the bushing, protrudes from one end of the bonding flange mold, and the nut is provided with a screw hole and an internal thread is provided on the inner wall ring of the screw hole, and The nut is sleeved on the positioning screw with the screw hole, and the internal thread and the external thread are screwed and engaged with each other. In addition, an upper sealing washer is further provided between the nut and the sleeve, the upper sealing washer The positioning screw penetrates and is sandwiched between the nut and the sleeve; wherein, the bonding flange mold is sleeved into the positioning screw through the sleeve, so that the bonding flange mold is positioned on the blade shell On the flanging of the body mold, the upper and lower sealing gaskets are used at the upper and lower end positions of the bushing, and then the nut is screwed into the positioning screw to achieve the fixed position of the bonding flange mold, and then matched with vacuum Extraction method to complete the production of bonding angle.

The adhesive flange vacuum pressurized mold device using the wind blade created by the author mainly has the following advantages: 1. The vacuum pressurization method is used on the adhesive flange mold to solve the problems of the glass fiber cloth layer falling due to gravity and the wrong layer, etc. , So that the usage of structural adhesive can be returned to be accurate and normal, which directly helps to control the weight of the blade and save the time for subsequent blade repair. 2. The convenient and accurate positioning of the bonding flange mold achieves the purpose of convenient operation. 3. The resin content of the adhesive flange under vacuum pressure is reduced, and the phenomenon of delamination, air bubbles, semi-dried wire, etc. of the glass fiber cloth is eliminated, so that the quality and structural strength of the adhesive flange are ensured, and then the blade after the mold clamping is reached The purpose of strengthening the front and rear edges.

In order to clearly explain that this creation can achieve the above-mentioned objectives and effects, the features and functions of the examples of this creation are described in detail with reference to the drawings. Please refer to the fourth picture to the seventh picture, the author creates a vacuum flange pressurizing die device for bonding flanges of wind power blades, which is used to connect a bonding flange mold 1 and a blade shell mold 2, which includes: A positioning flange piece 3 is provided in an assembly portion 21 of the blade shell mold 2, and the positioning flange piece 3 corresponds to the bonding flange mold 1, and the bonding flange mold 1 is One end is stacked on one end of the blade shell mold 2, and the other end of the adhesive flange mold 1 and the other end of the blade shell mold 2 extend in an arc in the opposite direction. In addition, the positioning flange piece 3 A sealing washer 4 is further stacked on the side corresponding to the bonding flange mold 1; a positioning screw 5 extending vertically from the assembly portion 21 toward the bonding flange mold 1, and the positioning screw 5 penetrates the positioning The flange piece 3 and the lower sealing washer 4, and the outer circumference of the top end of the positioning screw 5 is further provided with an external thread 51; a bushing 6, which is installed in a perforation 11 provided in the adhesive flange mold 1, And the bushing 6 corresponds to the positioning screw 5, and the superposition of the blade shell mold 2 and the bonding flange mold 1 is such that the positioning screw 5 penetrates the bushing 6; and a nut 7, which locks The positioning screw 5 protrudes from one end of the bonding flange mold 1 after passing through the sleeve 6, and the nut 7 is provided with a screw hole 71 and an internal thread 72 is provided on the inner wall ring of the screw hole 71 And the nut 7 is sleeved on the positioning screw 5 with the screw hole 71, and the internal thread 72 and the external thread 51 are screwed and engaged with each other, and the nut 7 and the sleeve 6 are further provided There is an upper sealing washer 8, the upper sealing washer 8 is penetrated by the positioning screw 5 and is sandwiched between the nut 7 and the bushing 6; wherein, the adhesive flange mold 1 uses the bushing 6 sets Into the positioning screw 5, the adhesive flange mold 1 is positioned on the flange of the blade shell mold 2, and the upper and lower sealing washers 4 are used at the upper and lower end positions of the sleeve 6, respectively The nut 7 is screwed into the positioning screw 5 to achieve the fixed position of the bonding flange mold 1, and then the vacuum extraction method is used to complete the bonding angle production (the foregoing is the main technical feature of the main embodiment of the creator, which corresponds to this case The content of the first item of the patent application range can be used to know the purpose and implementation type of this creation, and the technical features described in the remaining subsidiary patent application ranges are for the detailed description of the first item of the patent application range or additional technical features. Rather than limiting the scope of the first item of the scope of the patent application, it should be understood that the first item of the scope of the patent application in this case does not necessarily include the technical features described in the scope of the patent applications of the remaining subsidiary applications).

According to the size of the installation position of the bonding flange mold 1, determine the location of the positioning flange 3 on the flange of the blade shell mold 2; according to the size and shape of the positioning flange 3, make a depth of about 0.8-1.2cm Pit (the flanging cannot be worn through), and then the positioning flange piece 3 is placed and bonded. The positioning flange piece 3 cannot be higher than the flanging plane of the blade shell () mold, and is filled with gel coat. The positioning screw 5 is connected to the positioning flange 3, and after the positioning flange 3 is embedded in the flange of the blade shell mold 2, the positioning screw 5 is fastened and fixed on the blade shell mold 2 tightly for adhesion It is used for positioning and screwing the flange mold 1; a hole is provided on the bonding flange mold 1 relative to the positioning screw 5, a shaft sleeve 6 is provided in the hole, and the shaft sleeve 6 is adhered firmly. Its purpose is to prevent adhesion When the flange-mounting mold 1 is installed and used, a gap occurs between the positioning screw 5 and abrasion, which affects the dimensional accuracy of the mounting position of the bonding flange mold 1.

In addition, the upper seal washer 8 and the lower seal washer 4 used on the upper end of the positioning flange piece 3 and the sleeve 6 of the adhesive flange mold 1 and the lower end surface are used to prevent the adhesive flange mold 1 from being pumped. During vacuum operation, the resin-impregnated glass fiber cloth layer will overflow into the gap between the bonding flange mold 1 and the blade shell mold 2 with vacuum pressure, resulting in the bonding flange mold after the resin is cured. 1 Difficulty in self-molding and removal. Please refer to Figures 6 and 7 again, the vacuum bag pressing method for making the bonding flange: according to the foregoing, the position of the bonding flange 70 is to be set on the side of the SS blade shell 20, except for the previous injection molding of the PS blade shell 30 The vacuum auxiliary materials provided; position the bonding flange mold 1 according to the position of the aforementioned positioning screw 5 and tighten the nut 7; affix a ring of sealing tape along the edge of the blade shell mold 2, the range of the sealing tape can be The entire bonding flange mold 1 is surrounded, and the air bubbles of the bonding flange 70 (glass fiber cloth layer) on the bonding flange mold 1 are removed according to the hand lay-up process, and the release is covered on the pasted glass fiber cloth layer. After the cloth layer 9, the isolation film 91 and the diversion net 92 and other net layers, the diversion net 92 on the casing is placed on the diversion net 92 of the bonding flange 70 to facilitate air extraction. Put the vacuum bag 93 on the flange sealing strip of the blade shell mold 2 on one side. The vacuum bag 93 should have a sufficient margin to avoid overhead when vacuuming; the vacuum bag 93 seals the adhesive flange mold 1 and opens the vacuum pump valve slightly. , Slowly pump down, press the vacuum bag 93 on the bonding flange 70 with the shape, adjust the vacuum bag 93, pay attention to the vacuum bag 93 without gaps, fully open the valve of the vacuum pump, and pump out the excess gas in the vacuum bag 93, Press the glass fiber cloth layer tightly; after the resin gels, close the valve, after curing, remove the vacuum bag 93, sealing tape and other auxiliary materials used for vacuuming, remove the bonding flange mold 1, and the bonding flange 70 is completed.

The above-mentioned embodiments are only the preferred embodiments of the adhesive flange vacuum pressurization mold device for the creation of wind power blades. The structural features and methods disclosed are not intended to limit the specific content of the creation. Creations with similar characteristics and principles should be protected without departing from the scope of the utility model patent application. The specific patent scope is regulated by the claims in this case.

To sum up, the bonding flange vacuum pressurization mold device of the wind blades created in this book is really innovative in space type, which meets the necessary conditions for the novelty of the patent application, and also improves the lack of various items of conventional technology, practicality and Both progressive and sincere, an excellent creation in line with the application of a new type of patent, I sincerely ask your office to grant a patent for a utility model to encourage creation, and feel virtuous.

10‧‧‧Wind power blade 20‧‧‧SS blade shell 30‧‧‧PS blade shell 40‧‧‧Beam 50‧‧‧ Web 60‧‧‧Lead leading edge 70‧‧‧bonded flange 80‧‧‧bonded flange module 801‧‧‧Positioning hinge 90‧‧‧Blade shell module 1‧‧‧bonding flange mould 11‧‧‧Perforation 2‧‧‧Blade shell mould 21‧‧‧ Assembly Department 3‧‧‧Locating flange 4‧‧‧Lower gasket 5‧‧‧Positioning screw 51‧‧‧Male thread 6‧‧‧Shaft sleeve 7‧‧‧ Nut 71‧‧‧Screw hole 72‧‧‧ female thread 8‧‧‧Upper sealing washer 9‧‧‧Release cloth 91‧‧‧Isolation membrane 92‧‧‧Diversion network 93‧‧‧Vacuum bag

The first figure is a schematic diagram of the cross-sectional structure of a conventional wind power blade. The second figure is a schematic diagram of the partial structure of the leading edge of the conventional technology for bonding flanges and blade shells (SS, PS). The third figure is a schematic diagram of a partial structure of a conventional technology for bonding a flange mold and a blade shell. The fourth figure is a schematic view of the partial structure of the implementation of the vacuum flange pressurized mold device for the creation of wind power blades. The fifth figure is a three-dimensional exploded schematic view of the positioning device of the vacuum flange pressurizing die device for creating the bonding flange of the wind power blade. The sixth figure is a schematic cross-sectional view of an implementation of a vacuum flange pressurizing die device for creating a wind power blade. The seventh figure is an enlarged schematic view of a partial cross-section of a vacuum flange pressurized die device for creating a wind power blade.

20‧‧‧SS blade shell

70‧‧‧bonded flange

90‧‧‧Blade shell module

1‧‧‧bonding flange mould

2‧‧‧Blade shell mould

7‧‧‧ Nut

8‧‧‧Upper sealing washer

91‧‧‧Isolation membrane

Claims (5)

A bonding flange vacuum pressurizing mold device for wind power blades, which is used to connect a bonding flange mold and a blade shell mold, which includes: A positioning flange piece, which is arranged in an assembly part of the blade shell mold, and the positioning flange piece corresponds to the bonding flange mold, and the bonding flange mold is superposed on the blade shell with one end One end of the body mold, and the other end of the bonding flange mold and the other end of the blade shell mold extend in an arc in the opposite direction, and further on the side of the positioning flange piece corresponding to the bonding flange mold Stack the sealing gasket; A positioning screw, which extends vertically from the assembly part toward the bonding flange mold, and the positioning screw penetrates the positioning flange piece and the lower sealing washer, and an outer thread is further ringed on the top side of the positioning screw ; A shaft sleeve, which is installed in a perforation provided by the adhesive flange mold, and the shaft sleeve corresponds to the positioning screw, and the superposition of the blade shell mold and the adhesive flange mold is based on the positioning screw Run through the bushing; And a nut, which is locked to the end of the positioning screw and protrudes out of the bonding flange mold after passing through the bush, and the nut is provided with a screw hole and an internal thread is provided on the inner wall ring of the screw hole , And the nut is connected to the positioning screw with the screw hole, and the internal thread and the external thread are screwed to each other, and an upper sealing washer is further provided between the nut and the bush, the upper The sealing washer is penetrated by the positioning screw and sandwiched between the nut and the sleeve; Wherein, the bonding flange mold is sleeved into the positioning screw through the sleeve, so that the bonding flange mold is positioned on the flange of the blade shell mold, and the upper and lower sealing gaskets are respectively used on the sleeve The position of the upper and lower end faces is screwed into the positioning screw with the nut to achieve the fixed position of the bonding flange mold, and then the vacuum extraction method is used to complete the bonding angle. The vacuum flange pressurizing die device for the bonding flange of the wind power blade according to item 1 of the patent application scope, wherein the profile shape of the bonding flange mold is adhered to the inner surface of the front and rear edges of the PS shell of the wind power blade The shape of the connection position is made. According to the vacuum flange pressurized die device for bonding blades of wind power blades as described in item 1 of the patent application scope, wherein the positioning flange sheet is embedded and glued on the flange of the wind power blade shell. According to the bonding flange vacuum pressurized mold device of the wind power blade described in item 3 of the patent application range, wherein the positioning flange piece can be fixed to the shell mold by bonding or bolting. The vacuum flange pressurizing die device for the bonding flange of the wind power blade according to item 1 of the patent application scope, wherein the inner side of the arc-bending end of the bonding flange mold and the blade shell mold is further covered with Die cloth and diversion net.

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