rtm mold with screw self-sealing device
A self-sealing and screw technology, applied in the field of RTM molds with screw self-sealing device, can solve the problems of unguaranteed sealing effect and complicated sealing process, and achieve the effect of improving production efficiency and production quality, and saving labor and material costs.
Active Publication Date: 2020-10-13
HENGSHEN
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Problems solved by technology
[0005] In order to solve the above problems, the present invention provides an RTM mold with a screw self-sealing device, which solves the problems in the prior art that the sealing process is complicated and the sealing effect cannot be guaranteed
Method used
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Embodiment 1
[0026] The material of the rubber bag 7 is fluorine rubber, the material of the inner core 8 is a super strong magnet, which is located in the counterbore of the screw, and the core mold 3 is located in the sealed cavity formed by the upper mold 1 and the lower mold 2. The structure of the embodiment is simple. The operation is convenient, which solves the problem that the internal fastening screw 5 is infiltrated into the resin package during the injection process of the RTM mold and is difficult to take out, which greatly saves the cost of manpower and material resources, and improves the production efficiency and production quality.
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The invention provides an RTM (resin transfer molding) mold provided with a screw self-sealing device. The RTM mold comprises an upper mold, a lower mold and a core mold, wherein the core mold is fastened with the lower mold by a plurality of screws; the upper mold and the lower mold form a closed cavity; the core mold is located in the closed cavity; glue injection holes are formed in the closedcavity; counterbores are formed in the core mold; a thread is formed in each of the counterbores; threaded holes are formed at the corresponding positions of the lower mold; the screws are arranged inthe counterbores; the depth of each of the counterholes is 10-30mm more than the thickness of the head of each of the screws; a screw sealing pad is arranged above the head of each of the screws; each of the screw sealing pads comprises a rubber capsule and an inner core; the part of each of the rubber capsules on each of the inner cores is thick, and the part of each of the rubber capsules beloweach of the inner cores is thin. The RTM mold is simple in structure, resin can be effectively organized to permeate into a gap between each of the screws and each of the threaded holes; the problemthat the screws in the RTM mold are infiltrated and cannot be separated is solved, and the screws can be placed into the RTM mold conveniently and taken out easily by a minitype magnetic jack, so thattime and labor are saved, and the production efficiency is improved.
Description
technical field [0001] The invention belongs to the technical field of RTM molds, in particular to an RTM mold with a screw self-sealing device. Background technique [0002] With the development of modern technology, higher requirements are put forward for materials. Structural parts made of carbon fiber reinforced resin matrix composite materials have good application prospects due to their high strength, high modulus and light weight. [0003] The prepreg resin system has a certain service life, and the storage and transportation of materials require a low temperature environment, so special refrigeration equipment is required, which makes the storage and transportation costs of raw materials higher. Low-cost liquid molding technology is the development direction of carbon fiber reinforced resin matrix composite molding technology. [0004] When the shape of the workpiece is complex, the mold often needs to be equipped with parts such as briquetting blocks and core molds...
Claims
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IPC IPC(8): B29C70/48B29C33/00
CPCB29C33/0038B29C70/48
Inventor 李泽英於永红侯淑玲朱喜艳
Owner HENGSHEN