T-shaped rib glue injection mold for resin transfer molding
A technology of resin transfer and injection mold, applied in the field of parts molding, can solve problems such as poor molding quality, and achieve the effect of improving molding efficiency
Active Publication Date: 2022-06-07
CHENGDU AIRCRAFT INDUSTRY GROUP
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Problems solved by technology
[0004] The main purpose of the application is to provide a T-shaped rib injection mold for resin transfer molding, to solve the defects of poor molding quality in the prior art
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[0033] refer to Figure 1 to Figure 3 , the present application discloses a T-shaped rib injection mold for resin transfer molding, including an upper mold 1 and a lower mold 2, the upper mold 1 and the lower mold 2 are provided with cavities, and the upper mold 1 and the lower mold 2 are provided with cavities. The cavity communicates with the bottom surface of the upper mold 1, and at the same time, a glue injection hole 4 is provided on the top of the upper mold 1, which is communicated with the cavity;
[0034] The cavity located on the lower mold 2 communicates with the top of the lower mold 2, and the bottom surface of the lower mold 2 is provided with a glue outlet 5 that communicates with the cavity; during installation, the upper mold 1 and the lower mold 2 are fastened to each other. They are fixed and connected by fastening devices such as bolts, and the two cavities face each other and pass through each other after being buckled, so that the glue injection cavity 3...
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The T-shaped rib glue injection mold for resin transfer molding comprises an upper mold body and a lower mold body, a glue injection cavity is formed between the upper mold body and the lower mold body, and a glue injection hole and a glue outlet hole are formed in the upper mold body and the lower mold body correspondingly; a core mold is further arranged in the glue injection cavity, a forming cavity is formed in the core mold, the forming cavity communicates with the glue injection cavity through a glue inlet and a glue outlet, and a plurality of supporting pieces used for providing transverse supporting for the to-be-formed T-shaped ribs are further arranged in the forming cavity; porous sieve plates are arranged at the glue inlet and the glue outlet; a plurality of glue guide holes are formed in the porous sieve plates; radial drainage with the glue injection hole as the center is achieved through the porous sieve plate, redundant glue liquid gathered near the glue injection hole is guided to the area deviating from the glue injection hole in the shortest time, and therefore the time for the glue liquid to reach the part forming far end is shortened, the glue injection efficiency is improved, and the production cost is reduced. And meanwhile, the glue solution is prevented from being condensed in the glue injection process due to overlarge temperature difference, the flowability of the glue solution is ensured, and the glue injection molding quality is improved.
Description
technical field [0001] The application relates to the technical field of parts molding, and in particular to a T-rib injection mold for resin transfer molding. Background technique [0002] Resin transfer molding (RTM for short) is a process in which resin is injected into a closed mold to infiltrate reinforcing materials and solidify. In the flow glue method, after the liquid molding resin is heated, it passes through the glue injection port, and the mold cavity is injected in the way of point injection. After refilling the parts, it flows out from the glue outlet. In this method, the glue liquid preferentially fills the part area close to the injection port, and then flows laterally into the part area far from the injection port, and then fills all the parts area; this flow method will cause different parts of the entire part to follow a certain sequence. The sequential solidification and molding will affect the consistency of the product structure; at the same time, the ...
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IPC IPC(8): B29C70/48B29C70/54
CPCB29C70/48B29C70/548B29C70/541
Inventor 刘思彤陈贵勇罗维杨龙英
Owner CHENGDU AIRCRAFT INDUSTRY GROUP