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Injection molding processing several elements?
by：CSSSLD
2021-01-23
A, plastic mold
plastic mold is a kind of used for molding, extrusion, injection, blow molding and low foaming bai sectional die forming.
2, injection molding machine injection molding machine is a thermoplastic or thermosetting plastic using plastic molding mold made into various shapes of plastic products mainly molding equipment.
of three, plastic raw materials according to the molecular structure of the synthetic resin points are thermoplastic and thermosetting plastic, for thermoplastic plastic refers to the repeated heating still has plasticity plastic: mainly include PE/PP/PVC/POM/PS/ABS/PMMA/PC/PA commonly used materials.
4, forming conditions, the existence of the injection pressure
1 is to overcome the resistance in the process of melt flow, or conversely, exist in the process of flow resistance need to offset the pressure of the injection molding machine, to ensure that the filling process smoothly.
2, injection time injection time is short, for the influence of the molding cycle is very small, but the injection time of adjustment for the sprue, runner and cavity pressure control is a big role.
the reasonable injection time helps to melt the ideal filling, and to improve the surface quality of the product and reduce the size tolerance has very important significance.
3, molding temperature of injection temperature must be controlled in a certain range. Adverse effects, low temperature, molten material plasticizing quality, increase the difficulty of the process, Temperature is too high, the raw material easy to decompose.
4, pressure and time at the end of the injection molding process nearly, stop rotating screw, just move forward, the injection into the holding stage, the pressure to the nozzle of the injection molding machine in process of the cavity filling material, in order to fill the vacated due to shrinkage of fabrication capacity.
5, back pressure with high back pressure is advantageous to the pigment dispersion and the melting of the plastic, but at the same time to extend the time of the screw retraction, reduce the length of the plastic fiber, increase the pressure of injection molding machine, and so the back pressure should be lower, generally no more than 20% of the injection pressure.
chongda have plastic injection molding processing equipment more than 40 units, has a professional technical team, can provide customers with products, mold development, customized processing, according to the customer's choice, with personalized product customization, believe chongda plastic in the future will be able to develop a broader field of industry, deeper injection ability, more injection molding processing details welcome consultation: 18137150774
plastic mold is a kind of used for molding, extrusion, injection, blow molding and low foaming bai sectional die forming.
2, injection molding machine injection molding machine is a thermoplastic or thermosetting plastic using plastic molding mold made into various shapes of plastic products mainly molding equipment.
of three, plastic raw materials according to the molecular structure of the synthetic resin points are thermoplastic and thermosetting plastic, for thermoplastic plastic refers to the repeated heating still has plasticity plastic: mainly include PE/PP/PVC/POM/PS/ABS/PMMA/PC/PA commonly used materials.
4, forming conditions, the existence of the injection pressure
1 is to overcome the resistance in the process of melt flow, or conversely, exist in the process of flow resistance need to offset the pressure of the injection molding machine, to ensure that the filling process smoothly.
2, injection time injection time is short, for the influence of the molding cycle is very small, but the injection time of adjustment for the sprue, runner and cavity pressure control is a big role.
the reasonable injection time helps to melt the ideal filling, and to improve the surface quality of the product and reduce the size tolerance has very important significance.
3, molding temperature of injection temperature must be controlled in a certain range. Adverse effects, low temperature, molten material plasticizing quality, increase the difficulty of the process, Temperature is too high, the raw material easy to decompose.
4, pressure and time at the end of the injection molding process nearly, stop rotating screw, just move forward, the injection into the holding stage, the pressure to the nozzle of the injection molding machine in process of the cavity filling material, in order to fill the vacated due to shrinkage of fabrication capacity.
5, back pressure with high back pressure is advantageous to the pigment dispersion and the melting of the plastic, but at the same time to extend the time of the screw retraction, reduce the length of the plastic fiber, increase the pressure of injection molding machine, and so the back pressure should be lower, generally no more than 20% of the injection pressure.
chongda have plastic injection molding processing equipment more than 40 units, has a professional technical team, can provide customers with products, mold development, customized processing, according to the customer's choice, with personalized product customization, believe chongda plastic in the future will be able to develop a broader field of industry, deeper injection ability, more injection molding processing details welcome consultation: 18137150774
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