A method for manufacturing a prefabricated part of a pre-embedded bolt sleeve at the root of a fan blade
A technology for pre-embedding bolts and fan blades, which is applied to household components, household appliances, other household appliances, etc., can solve the problem of inconvenient forms and manufacturing methods of pre-embedded bolt sets at the root of fan blades, time-consuming and labor-intensive mass production, and increased mold time. and other problems, to achieve the effect of convenient production, reduce amortization of manufacturing costs, and improve production efficiency
Active Publication Date: 2016-09-14
国能联合动力技术(保定)有限公司
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AI Technical Summary
Problems solved by technology
Disadvantages of this method: increased mold time, higher manufacturing costs, etc.
This method improves efficiency to a certain extent, but mass production is time-consuming and laborious, and it is not easy to realize industrialization
[0005] It can be seen that there are obviously still inconveniences and defects in the form and manufacturing method of the above-mentioned existing fan blade root embedded bolt sleeve, and it is urgent to be further improved.
Method used
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[0033] The invention provides a method for manufacturing a prefabricated part of a pre-embedded bolt sleeve at the root of a fan blade, which specifically includes the following steps:
[0034] First design the specific mold as needed, see figure 1 , 2 As shown, the mold is composed of a pair of end baffles 4 and a pair of side plates 5 connected by fastening bolts 7. The four sides are planes without radians, and reinforcements are added between the end baffles 4 and the side plates 5. Plate 6 to enhance bending performance.
[0035] Positioning holes 8 are opened inwardly on the end baffle plate 4 of the mold, and the positioning holes 8 are cleaned up. Through the positioning holes 8, each pair of pre-embedded bolt sleeves can be limited, thereby ensuring its coaxial accuracy. In addition, a sealing groove can also be provided on the inner wall of the positioning hole 8, and an appropriate amount of release agent can be applied to the inner and outer surfaces of the mold ...
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The invention discloses a manufacturing method of pre-buried bolt sleeve prefabticated members of wind driven generator blade root parts. The manufacturing method comprises the following steps: A, a four-face mold is assembled, and a mold release agent coats on the mold surface; B, a bolt sleeve lower laying layer is laid in the mold; C, one or more pairs of pre-buried bolt sleeves are placed on the bolt sleeve lower laying layer, and each pair of pre-buried bolt sleeves are coaxially fixed at the left side and the right side of the interior of the mold respectively; D, fiberglass rods are respectively inserted into the front side and the rear side of each pre-buried bolt sleeve, included angle positions between the pre-buried bolt sleeves and the fiberglass rods are stuffed with fillers, fiber fabrics are laid in gaps between the pre-buried bolt sleeves and the fiberglass rods, and then a bolt sleeve upper laying layer is laid; E, a resin is injected into other gaps except the interiors of the pre-buried bolt sleeves, and curing molding and demolding are carried out; and F, cutting is carried out at a position between each two pairs of pre-buried bolt sleeves, two pre-buried bolt sleeves of each pair are obliquely cut, and multiple pre-buried bolt sleeve prefabticated members each having a wedge-shaped tail end are obtained. The manufacturing method can effectively improve the production efficiency of the pre-buried bolt sleeve prefabticated members, and improves the quality of products.
Description
technical field [0001] The invention relates to the technical field of fan blades, in particular to a method for manufacturing a prefabricated part of a bolt sleeve prefabricated at the root of a fan blade. Background technique [0002] With the increasingly fierce competition in the wind turbine blade industry, how to reduce the design cost and manufacturing cost is a difficult problem for every enterprise. Among them, on the premise of ensuring product quality, how to improve the production efficiency of root embedded leaves has always been the core issue. [0003] Embedded technology is one of the most important ways to connect composite products and metal parts. The traditional production method of pre-embedded blades at the root is to lay a long fiber fabric on the blade mold, a reinforcement cloth at the lower root end, and wrap yarn on the installation surface. Fiber bundles or fiberglass products of a certain strength are filled between the bolt sleeves and between ...
Claims
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IPC IPC(8): B29C70/34B29C70/54B29C33/00B29L31/08
CPCB29C33/00B29C70/68B29C70/747B29C70/76B29L2031/085
Inventor 韩新月代海涛闫文娟张启应刘丹程磊
Owner 国能联合动力技术(保定)有限公司