Extruder feeder is one of the key equipment on the plastic processing line, which is responsible for feeding the raw materials into the extruder according to a certain proportion and speed to ensure the continuity and stability of the extrusion process. The following is a detailed introduction to the extruder feeder:
First, basic concepts
Extruder feeder, as the name suggests, is the mechanical equipment used to feed the extruder. According to the production needs, plastic particles, powders or other forms of raw materials are quantitatively and continuously fed into the barrel of the extruder to provide a stable supply of raw materials for the extrusion process.
Two, the main types
According to the feeding method and structural characteristics, extruder feeders can be divided into many types, such as screw feeders, vibration feeders, weightless feeders and so on. Among them, the screw feeder is the most common type of extruder feeder, which uses the rotary movement of the screw to feed the raw material into the extruder.
Third, the working principle
The working principle of the screw feeder is to use the rotation and propulsion of the screw to send the raw material from the hopper into the barrel of the extruder. In the rotation process, the screw groove will continue to push the raw material forward, while generating friction and shear with the inner wall of the barrel, so that the raw material gradually softers and reaches the state suitable for extrusion.
Four, the main characteristics
1. Accurate metering: The extruder feeder has an accurate metering system, which can adjust the feeding amount according to the production needs to ensure the stability and continuity of the extrusion process.
2. Stable feeding: Through the rotation and propulsion of the screw, the feeder can stably feed the raw material into the extruder to avoid the phenomenon of cutting or blocking the raw material in the extrusion process.
3. Strong adaptability: the feeder can adapt to different types and shapes of raw materials, such as particles, powders, etc., to meet different production needs.
4. Easy maintenance: The structure of the feeder is relatively simple, easy to disassemble and clean, and convenient for daily maintenance and maintenance.
V. Scope of application
Extruder feeders are widely used in the plastic processing industry, especially in the production of plastic pipes, plates, profiles and other products, the role of feeders is particularly important. In addition, it can also be used in other occasions that require continuous and stable feed, such as chemical, food, pharmaceutical and other industries.
Six, selection suggestions
When choosing an extruder feeder, the following factors need to be considered:
1. Raw material characteristics: According to the type, shape and particle size of raw materials and other characteristics, select the appropriate feeder type and parameters.
2. Production demand: According to the production demand, determine the feeding amount, accuracy and stability of the feeder.
3. Equipment compatibility: Ensure that the interface size, speed and other parameters of the feeder and extruder match to achieve seamless docking and stable operation.
4. After-sales service: Choose a manufacturer with a perfect after-sales service system in order to obtain timely technical support and maintenance services in the process of use.
