Are you looking for the right used injection molding machines to purchase? If you do, you need to know the steps to follow to ensure that the machine you are choosing is suitable for your needs. The process of selecting the right injection molder starts with knowing the plastic parts that you intent to mold with it. Molding parts that are not suited for the machine can lead to frustration with on-going quality problems, slow cycle times as well as mold damage.
Before you purchase an injection molding machine, make sure that you know the part weight, plastic material, length x width x height, gate location, average wall section, estimated cycle time, maximum flow length from the gate, quality requirements as well as annual quantity requirements. Additionally, you need to know the mold size and weight. When you have the correct part information, you will be able to find the right injection unit size, machine type as well as clamp tonnage requirements.
Once you know the parts you intend to mold, you can start searching for the right used injection molding machines to purchase. There are three types of injections you can choose from, namely fully hydraulic, fully electric and hybrid, which is a combination of electric and hydraulic drive. The types of hydraulic machines that are available are usually defined by the type of clamp design, the type of hydraulic pump design as well as the presence or absence of an accumulator.
If low power consumption is a priority, a hydraulic machine will be suitable because it is energy efficient. However, if you are looking for a machine that is suited to clean room operations, an electric injection molder will be ideal because it does not have hydraulic oil that can leak onto the floor.
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