The charging device of an extruder

The feeding material is mostly granular material, but ribbon material or powder material can also be used. The charging equipment usually uses a conical feeding hopper, whose volume is required to provide at least one hour's consumption. The bottom of the hopper is provided with a truncation device to adjust and cut off the material flow, and the side of the hopper is provided with a viewing hole and a calibration measuring device. Some hoppers may also have a decompression or heating device that prevents the material from absorbing water from the air, or some drums may have their own agitator for automatic feeding or filling.
1. Hopper
The hopper is generally made of symmetrical form. There is a window on the side of the hopper to observe the material level and loading situation, and there is an opening and closing door at the bottom of the hopper to stop and adjust the feeding amount. Add a lid above the hopper to prevent dust, moisture and impurities from falling into it. In the selection of hopper materials, it is best to use lightweight, corrosion resistant and easy to process materials, generally use aluminum plate and stainless steel plate. The volume of the hopper depends on the size of the extruder and the feeding method. Generally for extruder 1 ~ 1.5h extrusion amount.
2. Feed
There are two feeding methods: manual feeding and automatic feeding. Automatic feeding mainly includes spring feeding, blast feeding, vacuum feeding, transport belt feeding and other forms. In general, the small extruder with manual feeding, large extruder with automatic feeding.