Principe de fonctionnement de la machine à granulés de plastique

In the process of plastic recycling and reuse, plastic pellet machine plays an important role as a key equipment. It realizes the recycling of resources by processing waste plastic into pellets. This article will discuss the working principle of plastic pellet machine in detail, covering its components, workflow and influencing factors, in order to better understand this important equipment.

Components of Plastic Pellet Machine

Plastic pellet machine mainly consists of the following parts, each of which has its unique function in the working process:

1. Feeding system: responsible for feeding the cleaned plastic waste into the pellet machine. Usually spiral feeding or gravity feeding is used to ensure that the raw materials enter the next link evenly.

2. Plastic crusher: Before entering the pellet machine, the plastic waste needs to be crushed into smaller particles for subsequent processing. The crusher breaks up large pieces of plastic waste and reduces its volume by rotating the blade.

3. Plastic extruder: This is the core part of the plastic pellet machine. The extruder consists of a heated screw and barrel, where the plastic is heated to a molten state. Through the rotation of the screw, the molten plastic is pushed into the mold.

4. Plastic pulling machine: The design of the plastic pulling mold determines the shape and size of the final pellets. When the molten plastic passes through the mold, it cools to form plastic strips.

5. Cooling system: After the plastic strip is extruded from the mold, it needs to be cooled to harden it. Usually water cooling or air cooling is used for cooling.

6. Cutting machine: The cooled plastic strips are cut into uniform pellets for subsequent packaging and transportation.

7. Control system: Modern plastic pellet machines are equipped with intelligent control systems that can monitor temperature, pressure and speed in real time to ensure the stability and efficiency of the production process.

The Workflow of Plastic Pellet Machines

The workflow of plastic pellet machines can be divided into several main steps, each of which is an important link to ensure the quality of the final product:

1. Raw material preparation: First, the plastic waste needs to be cleaned to remove impurities and moisture. The cleaned waste is fed into the feeding system.

2. Crushing: In the crusher, the waste is cut into small pieces by blades. This process ensures the smooth progress of subsequent processing.

3. Melt extrusion: The crushed plastic pellets enter the extruder. The heated screw melts the plastic at high temperature and pushes the molten plastic into the mold through the rotation of the screw.

4. Molding: The molten plastic passes through the mold and forms a continuous plastic strip after cooling. The design of the mold determines the shape and size of the pellets, which are usually cylindrical or granular.

5. Cooling: The plastic strips are quickly cooled in the cooling system and reach a hardened state. The cooling method usually affects the quality of the final pellets.

6. Cutting: The cooled plastic strips are cut into uniform small pellets by a cutting machine. These pellets are the final product, ready for packaging and transportation.

7. Inspection and packaging: Finally, the pellets are inspected to ensure that their quality meets the standards, and then packaged and ready for delivery to customers.

Factors Affecting The Working Efficiency Of Plastic Pellet Machines

During the operation of plastic pellet machines, multiple factors will affect its working efficiency and product quality, mainly including:

1. Raw material properties: Different types of plastics have differences in melting temperature, fluidity, etc. Understanding the properties of raw materials and choosing the right temperature and pressure are the keys to ensuring production efficiency.

2. Temperature control: The temperature setting of the extruder is crucial. Too high a temperature may cause plastic degradation, while too low a temperature will affect the melting effect. Reasonable temperature control helps improve product quality.

3. Screw design: The design of the screw has a direct impact on the mixing, melting and conveying process of the plastic. A suitable screw design can improve extrusion efficiency and reduce energy consumption.

4. Cooling speed: The design of the cooling system also affects the quality of the pellets. Too fast or too slow cooling will result in uneven shape and strength of the pellets.

5. Cutting accuracy: The accuracy of the cutting machine directly affects the uniformity of the final plastic pellets. Accurate cutting can ensure product quality and enhance market competitiveness.

Maintenance And Maintenance of Plastic Pellet Machines

In order to ensure the long-term and stable operation of the plastic pellet machine, regular maintenance and maintenance are essential. Mainly include:

1. Regular cleaning: During the production process, plastic residues will accumulate inside the machine, and regular cleaning helps prevent blockage and equipment damage.

2. Lubrication system inspection: The screw and transmission system need to be regularly refueled to ensure normal operation and reduce wear.

3. Temperature monitoring: Regularly check the temperature control system to ensure that the heater and sensor are working properly to prevent abnormal temperature.

4. Tool maintenance: The blade of the cutting machine needs to be replaced or sharpened regularly to ensure cutting quality.

5. Equipment inspection: Regularly inspect the equipment, find potential problems and deal with them in time to avoid downtime.