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Glass fiber injection molding process requires materials and equipment
Writer:admin    Released:2018-08-31 17:12:18    Type:【L】【M】【S
Material preparation: raw materials are mainly resin (mainly unsaturated polyester resin) and untwisted glass yarn. Mold preparation: preparation work includes cleaning, assembly and coating demoulding agent.  Injection molding equipment: injection molding machine pressure tank, pump supply and integrated three types.The cast-in-place pump injection molding machine is used to deliver the resin initiator and accelerator to the static mixer respectively by the pump, and after fully mixing, the machine is ejected by the spray gun.Its components are pneumatic control system, resin pump, auxiliary pump, mixer, spray gun, fiber cutting injector and so on.The resin pump and booster pump are connected by rocker arm rigidly. The position of booster pump on rocker arm can be adjusted to ensure the proportion of ingredients.Under the action of the air compressor, the resin and additives are mixed evenly in the mixer, and the spray drops are formed by the spray gun, and the cut fibers are continuously sprayed to the surface of the mold.The jet only has a gel spray gun, simple in structure, light in weight, less waste of initiator, but because of the mixing in the system, it should be cleaned immediately after completion, to prevent the spray blockage.The injection machine is a kind of pressure tank, which is used to load the resin liquid into the pressure tank separately.It is composed of two resins tank, pipe, valve, spray gun, fiber cutting injector, car and bracket.When working, connect the compressed air gas source, make the compressed air enter the resin tank, glass fiber cutter and spray gun through the air water separator, make the resin and glass fiber continuously from the spray gun, resin atomization, glass fiber dispersed, after mixing evenly, sink to the mold.The jet is a mixture of resin outside the spray gun, so it is difficult to plug the nozzle.The advantages of the above two moulding machines are combined with the advantages of the device. The temperature controlled resin and catalyst mixing container is adopted. The operation is simple and even.Blend resin, curing agent by the pump from the corresponding container sucked out, fiberglass approved by glass fiber cutter for cutting the injector continuous, resin and curing agent by atomization, glass fiber dispersed evenly mixed sinks down into the mold, the machine reduces the volatilization of initiator and catalyst to reduce the air pollution effectively reduce the harm to human body, and independent hybrid approach effectively solved the problem of the barrel plug.
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