Control Systems on Injection Mould Machines
Control Systems on Injection Mould Machines
Injection moulding is a complex process.injection moulding machine control systems To ensure the best results, you need to have a control system in place to make all of your operations run as efficiently as possible. There are several different types of injection control systems available and each one performs differently. The type of control that you choose will depend on the type of material being used as well as the size and shape of the material being moulded. For example, it may not be possible to incorporate a servo into a plastic material so a screw or valve actuator may be required. This is one of the main reasons why injection moulding machines tend to include a number of different and versatile controls.
The majority of injection controller machines are based on a mechanism known as a ball & rod linear induction switch.injection moulding machine control systems injection moulding machine control systems This works by applying a constant controlled amount of force either via a pinion or screw threads onto the balls that are inserted into the machine. The force applied to the balls will alter the width of the moulds as well as the length, both of which can determine the diameter and thickness of the moulds themselves. The ball & rod control system uses a combination of servo motors to regulate the speed and direction of the force applied to the moulds.
Another common type of control system used in injection moulding machines is an electronic ball & rod controller. It works by injecting an electric charge into the ball, which then changes the shape of the moulds as required. An advantage of using an electronic ball & rod controller is that it requires no physical contact between the moulds and the equipment that they are being controlled with. This means that it can be used with a wide range of different equipment that uses either electric or hydraulic pressure.
As well as using servo motors to control the operation of injection moulding machines, some machines use ultrasonic technology. This is most commonly found on all-electric machines. An ultrasound gun is used to apply the ultrasonic beads to the required surface. Some arburg machines use ultrasound to apply the beads, but the accuracy of the beads depends upon their size and the exact nature of the arbor and the material it is made from.
Injection moulding machines also incorporate high pressure control systems to increase the effectiveness of the whole injection moulding process. These high pressure control systems are usually incorporated within the same machine as either an electric pump or a pump/electromotive initiator (PEI). A further option available for high pressure control is to run the machine entirely on autopilot, requiring no manual monitoring or intervention. This is often seen in machine shop applications where very high precision requirements are involved, as well as those requiring extremely long runs.
Other controls utilised in injection moulding machines are ultrasonic, ballast, fixed angle, as well as centrifugal pumps. The term 'ballast' refers to a system which controls the speed of a ballast pump, which has an inbuilt motor attached. This speed control is needed due to the fact that an injection mould requires high levels of force in order to fully eject the plastic or rubber product. Typically, this ballast control system requires a two-speed electric motor with a maximum speed of about 3500 rpm, although a further control system, such as a centrifugal pump, may be incorporated for use with higher ballast speeds.
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