The manufacturer of Conical Twin Screw and Barrel for Plastic Profile Machine will show you: the process flow of the twin alloy screw and barrel

The manufacturer of Conical Twin Screw and Barrel for Plastic Profile Machine tells you that the barrel, also called the barrel, is an important part of the injection system. It and the screw complete the processes of plastic transportation, plasticization and injection together, and it is also other equipment ( Heaters, cooling devices, feeding hoppers, metering devices, etc.) are installed as supporting parts, and the barrel is generally made into an integral structure. The manufacturer of Conical Twin Screw and Barrel for Plastic Profile Machine tells you that there is a certain gap between the inner hole of the barrel and the screw. The heating and cooling device is installed outside, and the barrel is installed on the injection seat or the hopper seat, and the front end is connected with the nozzle.

The form of the barrel feeding port. The manufacturer of Conical Twin Screw and Barrel for Plastic Profile Machine tells you that since most injection molding machines use gravity feeding and forced feeding, the cross-sectional shape of the feeding port must have the conveying capacity when feeding. The manufacturer of Conical Twin Screw and Barrel for Plastic Profile Machine tells you that in order to increase the conveying capacity, the feeding port should try to increase the material area of ​​the screw and the contact area between the screw and the barrel. The cross-sectional shape of the feeding port can be symmetrical or offset.
The manufacturer of Conical Twin Screw and Barrel for Plastic Profile Machine tells you that the symmetrical feeding port is too small, easy to manufacture, and low in conveying capacity. The offset feeding port is suitable for high-speed screw feeding and has better conveying capacity, but it is difficult to manufacture. . The manufacturer of Conical Twin Screw and Barrel for Plastic Profile Machine tells you that when the screw forced feeding device is used, the top-view shape of the feeding port should be a symmetrical circle, and the gravity type feeding should be an offset type.
Heating and cooling of the barrel. The manufacturer of Conical Twin Screw and Barrel for Plastic Profile Machine tells you that the barrel widely uses resistance heating strip heaters, cast aluminum heaters, ceramic heaters, etc., because the resistance heaters are small in size and convenient to manufacture and maintain. In the compression section, A heater with a larger heating power should be configured. During the plasticizing process of the material, the shearing heat is small. Generally, the barrel is not equipped with a separate cooling device, and it depends on natural cooling. The manufacturer of Conical Twin Screw and Barrel for Plastic Profile Machine tells you that in order to maintain a good feeding and conveying effect and prevent the heat of the barrel from being transmitted to the transmission part, a cooling water jacket is installed at the feeding port for cooling and heat resistance.