Injection molding machine is the main molding equipment that uses thermoplastic or thermosetting plastics to make various shapes of plastic products using plastic molding dies. Divided into vertical, horizontal, all-electric. The injection molding machine can heat the plastic and apply high pressure to the molten plastic to make it eject and fill the mold cavity.
The composition of injection molding machine:
precision plastic injection molding machine usually consists of injection system, mold clamping system, hydraulic transmission system, electrical control system, lubrication system, heating and cooling system, safety monitoring system, etc. The injection system is one of the most important components of an injection molding machine. Generally, there are three main forms of plunger type, screw type and screw pre-plastic plunger injection type. The most widely used is the screw type. Its role is that in a cycle of a plastic injection machine, a certain amount of plastic can be heated and plasticized within a specified time. At a certain pressure and speed, the molten plastic is melted through the screw Fill the mold cavity. After the injection is completed, the molten material injected into the mold cavity is maintained in shape. Composition of the injection system: The injection system consists of a plasticizing device and a power transmission device.
The working principle of injection molding machine:
The working principle of the injection molding machine is similar to the injection syringe. It uses the thrust of the screw (or plunger) to inject the plasticized molten state (that is, viscous flow state) into the closed mold cavity. The process of obtaining products after curing and setting.
Injection molding is a cyclic process, and each cycle mainly includes: quantitative feeding-melt plasticization-pressure injection-filling cooling-opening and taking parts. After removing the plastic part, the mold is closed and the next cycle is performed.
The advantage of injection molding machine:
Firstly, it can increase the speed of injection of the machine into the mold cavity, and it is easier to help it to fill the mold cavity, and at the same time, it can eliminate the vibration of the injected PC material.
Secondly, due to the increasing clamping force, the batch front of injection molded parts will be greatly reduced, and the problem of shrinkage of the mold can also be solved very well. At the same time, it is easy to solve the problem of color mixing .The amount of sol required for most injection molding is too large, which can easily cause the sol quality of the injection molding machine to be reduced.