What is the best way to control the temperature of the injection molding machine?
Injection molding machines usually consist of an injection system, a clamping system, a hydraulic transmission system, an electrical control system, a lubrication system, a heating and cooling system, and a safety monitoring system.
Injection system is one of the most important components of injection molding machine. Generally, there are three main forms of plunger type, screw type and screw pre-plastic plunger injection type. Currently the most widely used is the screw type. The function is that, in a cycle of the injection molding machine, a certain amount of plastic can be plasticized and plasticized in a predetermined time, and the molten plastic is injected into the mold cavity through the screw at a certain pressure and speed.
The temperature measuring thermocouple of the injection molding machine is used as the temperature measuring component, and the millivolt meter for measuring the temperature becomes the temperature control device of the injection molding machine, and the current of the electric cylinder of the control cylinder and the mold is controlled to selectively adjust the temperature of each section of the barrel. And mold temperature.
The injection molding machine barrel heating coil usually includes two-stage, three-stage or four-stage control. The current meter on the electrical cabinet of the injection molding machine respectively reflects the current of each segment of the electric heating coil. The reading of the ammeter is very stable. If the ammeter reading is too low for a long time during operation, there may be a problem with the electric heating coil, or the wire contact is poor, or the heating wire is oxidized and thinned, or an injection molding electromechanical hot ring is burned. These will increase the resistance of the parallel circuit of the injection molding machine and decrease the current.
When the ammeter has a certain reading, it is also possible to simply use the plastic strip of the injection molding machine to smear on the outer wall of the injection electromechanical hot ring to see if the strip is molten or not to determine whether a certain electric heating coil is energized or burned.
Injection molding machine is one of the common injection molding machines, because the machine itself has a lower center of gravity, so the majority of consumers will be more stable during installation. In addition to this there are many excellent features. However, it is also very important to have normal maintenance methods in order to make these auxiliary machines with better performance. Let's take a look at what maintenance techniques are available.