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Injection molding machine is the main molding equipment that uses plastic molding molds to
produce various shapes of plastic products from thermoplastic or thermosetting plastics. It is
divided into vertical, horizontal, and fully electric types. The injection molding machine heats
the plastic and applies high pressure to the molten plastic, causing it to shoot out and fill the
mold cavity.
The working principle of an injection molding machine is to use the thrust of a screw (or
plunger) to inject the melted plastic (i.e. viscous flow state) that has already been plasticized
into a closed mold cavity, and after solidification and shaping, the process of obtaining the
product is carried out.
Injection molding is a cyclic process, each cycle mainly includes: quantitative feeding - melting
and plasticization - pressure injection - mold filling and cooling - mold opening and part taking.
After removing the plastic part, close the mold again and proceed to the next cycle.
Injection molding machine operation project: The injection molding machine operation project
includes three aspects: control keyboard operation, electrical control system operation, and
hydraulic system operation. Select the injection process action, feeding action, injection
pressure, injection speed, and ejection type separately, monitor the temperature of each
section of the material barrel, adjust the injection pressure and back pressure, etc
The reasonable combination of electrical control system and hydraulic system can achieve the
process requirements (pressure, temperature, speed, time) and various program actions of the
injection machine. Mainly composed of electrical appliances, electronic components, instru-
ments, heaters, sensors, etc. There are generally four control methods, manual, semi-automatic,
fully automatic, and adjustment.
Siemens 3RP1574-1NP30 can be applied to Injection moulding machine, this well-known brand,
high quality product will be a good assistance for your machine and enhance productivity. Just
get touch with Vivi (sh_plc@163.com) to acquire this product!
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