Feeding System Of Plastic Injection Mold

The production of plastic injection molds generally focuses too much on the reflection stage and the output rate after the introduction of raw materials. Feeding is also particularly important for injection molding plants.

When the injection volume exceeds the injection molding machine to a large injection volume, it is obvious that the feed volume is tight. If the product quality is close to the specific injection quality of the injection molding machine, there will be a problem of insufficient plasticization, and the material will not be heated in the barrel for enough time. This type of situation can only be solved by replacing the large-volume injection molding machine. Some plastics, such as polyester, have a narrow melting range and a large constant pressure. An injection molding machine with a large plasticizing volume can be used to ensure the supply of materials.

 

Generally, injection molding machines are only equipped with direct-connected sprinklers due to work pressure damage. However, if the front end of the barrel is developed and the nozzle temperature is too high, or under high pressure, the front end of the barrel is developed and discharged too much, so that the plastic injection mold is opened before the injection is started, and the plastic injection mold will be advanced to the plastic injection mold. The runner channel is cooled and hardened, which prevents the melt from entering the cavity smoothly. At this time, the front-end development of the barrel and the temperature of the nozzle should be reduced and the storage capacity of the barrel should be reduced.

 

Because the plastic is partially melted and agglomerated in the air dryer of the silo, or the temperature of the barrel feeding section is too high, or the plastic grade is not selected well, or the plastic contains too much lubricating fluid, the plastic enters the injection molding machine inlet The reduced diameter part or the screw end groove of the screw of the injection molding machine is forced to melt, blocking the safe passage of the plastic injection mold or wrapping the screw of the injection molding machine, and accompany the screw to move on the circle. It cannot be shifted, causing the feeding to be interrupted or irregular. ups and downs.