Effective discharge of small injection molded parts in the mold
How does an injection moulding machine work?
An injection molding machine is a machine that produces plastic parts from plastic in granular form. For this purpose, the required molding compound is prepared in the injection unit and injected into a die, which represents a negative mold (cavity) of the desired plastic part. Depending on the process used (thermoplastic injection molding, thermoset injection molding or elastomer injection molding), various components of the machine are heated or tempered. Injection molding machines generally consist of two parts: The injection unit, which prepares the raw material and injects it into the mold under pressure, and the clamping unit, which receives the mold and opens and closes it.
Electrostatic charge can cause small parts to stick in the tool
Due to the injection process as well as contact and separation of the product when opening the mold and ejecting the parts, the high-resistance plastic molded part becomes electrostatically charged. Due to the very low mass, a small charge is sufficient for small parts to adhere to the grounded mold. When the mold is subsequently closed, the machine comes to a standstill.
After injection moulding the plastic parts must be released from the mould.
The problem was solved by using special air nozzles with integrated ionization. The positioning was done at the suitable place at the injection mold.
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The VARIO IONIZER ES51 has 5 connections and works with proven Eltex technology. On the top side there is a LED display for the function and fault message. The device also has an analog interface. For a good ion balance, the device is available with and without parameter diode.
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