How does a plastic pelletizer work?

Plastic pelletizer is suitable for the production of PP, PE, PS, ABS, PA, PVC, PC, POM, EVA, LCP, PET, PMMA and other plastic regeneration and mixed color granulation.

Here is the content list:

• The working principle of plastic pelletizer

• Points for Attention in Use

The working principle of plastic pelletizer

After plastic hopper into the screw, under the action of the rotating screw, through the friction of the inner wall of the cylinder and the surface of the screw forward transmission, in the screw feeding section, loose solid material (or material at the end) is filled with the screw groove, with the continuous transmission of material, material began to be compacted. When the material enters the compression section, the depth of the screw groove gradually becomes shallow and the resistance of the head makes the plastic gradually form high pressure, and is further compacted. At the same time, under the action of the external heating of the cylinder and the internal friction shear heat generated by the strong stirring, mixing and shear friction of the screw and the inner surface of the cylinder, the temperature of the plastic is rising continuously. At a certain point in contact with the cylinder, the temperature of the plastic reaches the melting point and begins to melt. With the conveying of the material, continue to heat, the amount of molten material gradually increased, and the non-molten material record a corresponding reduction. About the end of the compression section, all materials are transformed into viscous flow state, but at this time the temperature of each point is not uniform, after the homogenization of the homogenization section is more uniform, the screw will be quantitative, constant pressure, constant temperature squeezing into the machine head. Machine head die is a forming part, the material through it to obtain the geometry and size of the section, and then after cooling and other processes, you can get a good product.

Points for Attention in Use

No irrelevant person is allowed to talk with the plastic recycling extruder equipment operator. Only one person is allowed to operate the button instruction on the electric control panel.

Regularly check the insulation effect of the wire circuit, and pay attention to the warning content on the warning board of the machine at all times;

Before the power distribution cabinet is cut off, it is strictly prohibited for non-professionals to open the cabinet door, and it is strictly prohibited to adjust the cutting tool before the granulator is completely stationary.

When the moving parts and hopper are blocked, do not use hands or iron rods, but only use plastic rods to handle carefully;

When touching the hot part, be careful of scald. When the kneader is working, it is strictly prohibited for the staff to extend their upper body into the barrel to visit or scrape the material.

During the work, if the power failure occurs, the motor circuit should be cut off and the memory material of the machine should be cleaned up in time. The material carbonization will affect the next production.

When the machine breaks down, the machine should be stopped in the first time, and no self-assertion is allowed. And inform and wait for the maintenance personnel to investigate the maintenance or telephone maintenance guidance;

To prevent all factors leading to machine damage and industrial accidents; Operate in strict accordance with the standard operation method to reduce the occurrence of failure or accident.

The main machine of plastic pelletizer is the extrusion machine, which is composed of an extrusion system, transmission system and heating and cooling system.