Injection-compression molding method for glass fiber reinforced plastic fairing of locomotive

A technology of injection molding and glass fiber reinforced plastic, applied in the direction of coating, can solve the problems of inability to guarantee the size and finish of the back, high material requirements, poor effect, etc., to achieve economical and environmentally friendly appearance, reduce resin content, and ensure strength. Effect

Inactive Publication Date: 2012-06-20
大同机车新型材料制品有限责任公司
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  • Abstract
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Problems solved by technology

[0002] Nowadays, FRP fairings for locomotives are mostly produced by traditional hand lay-up method with single-sided contact mold molding. One side of the mold can guarantee smoothness, but the other side cannot. It can only be processed by grinding, which is not effective and has a lot of dust. The environment and the health of workers are affected. Use other molding methods, such as compression molding, which uses metal molds, through large-tonnage presses, and requires a large investment. For products that require flame retardancy, the material requirements are very high; vacuum bag molding method The size and finish of the back cannot be guaranteed

Method used

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  • Injection-compression molding method for glass fiber reinforced plastic fairing of locomotive

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Embodiment Construction

[0023] The injection molding method of the locomotive FRP fairing of the present invention is made according to the following steps:

[0024] The first step is to make the upper mold; use the existing mold as the lower mold 2, leave a gap according to the thickness and shape of the product, and paste a set of upper mold 1, the upper mold 1 is fixed in the upper mold frame 3, and the lower mold 2 is fixed In the lower mold frame 7, the upper mold 1 is located directly above the lower mold 2, and the position where the upper mold 1 contacts the lower mold 2 is provided with a sealing strip, and a cavity 8 with the same shape as the product is formed between the upper mold 1 and the lower mold 2 , the top of the upper mold 1 has a glue injection port 4, and a plurality of air extraction holes 5 are opened around the glue injection port 4, and the upper mold frame 3 and the lower mold frame 7 are closed with the mold clamping guide mechanism 6;

[0025] The second step is layering...

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Abstract

An injection-compression molding method for a glass fiber reinforced plastic fairing of a locomotive belongs to the technical field of manufacturing methods for glass fiber reinforced plastic fairings of locomotives, and aims to solve the technical problem of providing a manufacturing method for a glass fiber reinforced plastic fairing of a locomotive, wherein the glass fiber reinforced plastic fairing is economical, environment-friendly and attractive in appearance. The technical scheme includes that the injection-compression molding method for the glass fiber reinforced plastic fairing of the locomotive includes the steps: firstly, manufacturing an upper mould; secondly, laying layers and then spreading a continuous felt on the topmost layer of a lower mould; thirdly, closing the moulds; fourthly, vacuumizing for glue injection; fifthly, solidifying and drawing; sixthly, grinding and painting; and seventhly, repeating the second step to the sixth step to manufacture a next fairing. The injection-compression molding method is used for manufacturing the glass fiber reinforced plastic fairing of the locomotive.

Description

technical field [0001] The invention discloses a pressure injection molding method for a locomotive FRP fairing, and belongs to the technical field of manufacturing methods for a locomotive FRP fairing. Background technique [0002] Nowadays, FRP fairings for locomotives are mostly produced by traditional hand lay-up method with single-sided contact mold molding. One side of the mold can guarantee smoothness, but the other side cannot. It can only be processed by grinding, which is not effective and has a lot of dust. The environment and the health of workers are affected. Use other molding methods, such as compression molding, which uses metal molds, through large-tonnage presses, and requires a large investment. For products that require flame retardancy, the material requirements are very high; vacuum bag molding method The size and finish of the back cannot be guaranteed. Contents of the invention [0003] The invention overcomes the deficiencies in the prior art, and...

Claims

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Application Information

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IPC IPC(8): B29C45/00B29C45/26
Inventor 马秋杰郑宏义封捷王建国刘雁东黄晓建
Owner 大同机车新型材料制品有限责任公司
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