Injection molding equipments 

Posted by roger |

Injection molding is known as a manufacturing process where the granules of plastic are heated until they are melting and then they are forced into the specially designed mold. When in the mold, the plastic is allowed to cool and hardens into the form of the mold. This type of molding is commonly used in industrial field for producing plastic artifacts like toys, computer casings, and cookware.

Moreover, injection molding provides many advantages in most plastic products. The process is using injection molding equipment. Actually, the process of injection molding is simpler, more versatile, more reliable, and also most efficient than most other injection molding types. At this time, this article is going to deliver some information about some equipment that used in the process of injection molding.

The first equipment which becomes the key part of injection molding is called the barrel. This is actually a metal cylinder which houses the reciprocating screw. The barrel is used to empty the plastic granules via the hopper and while in the barrel the combination of heat from heaters and friction from reciprocating screw liquidizes plastic pellets. The injection nozzle is at the end of the barrel, through which molten plastic is injected into the mold.

The  2nd machinery necessary for injection molding is called reciprocating screw. This machine sits inside the barrel of injection molding equipment. It  turns around its axis and empowers plastic granulate through the barrel and into the die. In the appearance, it is roughly cylindrical, tapering slightly to the point at one end. The outer surface of this equipment is shaped into the screw thread.

The third equipment is called hopper. It is used for storing plastic granules before they are entering the barrel. It comes with a large funnel into which plastic granules are deposited before they are entering the barrel.

The fourth equipment is named heater. This heater sits around the barrel and raises the temperature of plastic granules to the point at which they are melting. It enables the molten plastic to be injected into the mold. The heater sits wrapped around the cylinder and it is powered by electricity.

The next equipment is the mold. The mold and the corresponding mold cavity can determine the final shape of injection molded artifact. You should know that there are certain limitations on the mold design and the molded artifacts design that caused by the necessity of being able to remove artifact when it has solidified.

The last machine is large plate that can be moved. also know as "Platen" , this  is known as a mobile flat plate which is used for pushing the mold and the mold cavity together. It ensures that molten plastic migrates to every part of the mold and mold cavity. The platen is held in the place against the mold by the clamp.

 

 

 

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