Efficient and low-pollution GMT powder scattering device and using method thereof

Abstract

The invention provides an efficient and low-pollution GMT powder scattering device and a using method thereof. The powder scattering device comprises a powder scattering machine, a conveying belt, a bouncing roller, an elastic support, a vibration motor, a recycling bin and a circulating fan, in a dry-method GMT felt making process, additives can be directly added to a multi-layer felt net throughone-time powder scattering after net laying, the dispersion uniformity of powder in a net layer is kept through multiple vibration devices, sealed and circular treatment is carried out at all dust raising positions, the simplicity of later maintenance and cleaning is ensured, high efficiency, convenience and rapidness are achieved, and automation and productivity are improved.

Description

technical field [0001] The invention relates to the field of design and manufacture of GMT felting machinery and equipment, in particular to a high-efficiency and low-pollution GMT powder spreading device and its use method. Background technique [0002] Lightweight fiber-reinforced thermoplastic composites, referred to as GMT, are mainly used as structural and interior parts in automobiles due to their high specific strength, thermoplasticity, recyclability, and easy processing and molding. At present, with the expansion and extension of the market, lightweight GMT composite materials have gradually developed into construction, home furnishing and other fields. [0003] The international manufacturing of lightweight GMT can be classified into dry and wet GMT according to the process. Wet technology is mainly monopolized by a few foreign companies represented by Hanwha and KPS. It is based on traditional papermaking technology and combined with special technical means. In t...

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Problems solved by technology

Due to the dry mixing, carding, web forming, web laying, and needle punching are all controlled by precision machinery: if the powder is added at the stage of mixing, carding, and single web, the uniformity of powder spreading is guaranteed, but most electrical equipment will be seriously damaged. Pollution, some conductive powders will also lead to short circuit of the equipment; if the powders are added together after laying the net, it will cause the powders to accumulate on the upper layer of the felt net, which will seriously affect the dispersibility of the powders and greatly reduce the effect of additives

[0004] At present, the domestic production of GMT only has a dry process, so limited by the difficulty of the process, adding additives inside GMT has always been a major problem, so that traditional GMT is increasingly unable to meet the special requirements of automobile OEMs (flame retardant, low odor) , antibacterial, far infrared, etc.)

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