Study On The Production Line Of Fully Automatic Pulp Molding Tableware

Pulp molding tableware is the perfect substitute of EPS, these factories of which are mainly located in China. Problems of present equipment of Pulp molding tableware which are made up of low automatization, high production cost, pollution in the product process, influence product competition in market, confine development of Pulp molding industry. According to reduce the production cost of tableware and protect the environment, it is important urgent to research fully automatic production line of pulp molding tableware.The production cost of tableware consist of material cost(approximately 40%) > energy cost(approximately 30%), helpful dosage(approximately 20%) and manual cost(approximately 10%),so reducing production cost of tableware must start with above four points. The technology of low cost pulp, automatic carrying system, high efficient energy, mould saving energy, water-resistance and oil-resistance dosage, efficient and stable control system are researched, which are not only important points ,but also creative points of this paper. Optimum design of loaded beam which is key part of carrying system, design of stability and reliability control system are emphasized.In the light of cost index and pollution degree, the characteristics of kinds of pulp are analyzed in detail, and the GP pulp which is low cost, high-yield, no-pollution is chosen as the material of tableware. Based on material element analyzed, shaping technology is designed, the to and for single plane shaping equipment which is high shaping quality, high production efficiency and is easy to automatize is chosen. All kinds of measure are taken to solve the problems which are inequality in the shaping process of GP pulp, and dosage which matches with GP pulp is chosen. Some ways of fixing shape and heat up are analyzed, the technology of saving energy of heat pressing to fix shape being composed of oil heat and only one fixed shape in the mold is applied, with which it is high production efficiency, low cost to fix shape effectively, which saves energy 30 percent. In order to make the production line meet with material of GP pulp, measure are taken to solve the problem of pulp adhered to netlike molding which can lead to carry material difficult, the structure of fully automatic equipment is renovated, the loaded beam is optimizationally designed to make equipment structure compactand improve location precision and products quality. According to technologic flow and actual characteristic, Omron PLC is chosen as the core of the control system, proximity switch as detect unit take the place of touch switch, software is designed reasonably according to time order figure, hardware is simplified, the reliability of system is advanced, the stability of system is assured to make production order. Intelligence neuron PID system is studied theoretically which is made up of both neuron with self-organizing and self-learning function and ordinary PID with the characteristic of the simple structure and high stability, which can automatically tune the parameter with the change of system parameter, remain perfect performance.The fact shows that the production line of fully automatic pulp molding tableware has high automatization and wide adaptability, the product of surface is beautiful, which of weigh is light that has good water-resistance and oil-resistance, which is quickly decomposing and low cost. It is a green production line, having good society benefit and huge latent economy benefit. It is important to protect environment and improve pulp molding tableware industry.