The operation of the granulator includes a series of links such as equipment, adjustment, test run, operation, protection and repair, and special attention should be paid to the characteristics of the granulator. Grasp the operation of the granulator is obviously very important, because there will be natural wear and tear in the process of the use of machinery and equipment, and wear will be a certain degree of defects will appear, and a reasonable and correct method of operation, will greatly reduce the wear and tear Speed, the extension of the use of mechanical life, so it is necessary to know the operation of the granulator, the specific content is as follows:

1. Preparation operation of granulator: The plastic used for extrusion molding should pay attention to its dull doubt, and the primary raw materials should reach the boring demand needed, and further boring is needed if necessary. The material was sieved to remove caking aggregates and mechanical impurities.

2. When the granulator is operating, check whether the water, electricity, and gas systems in the equipment are normal, ensure the water and air channels are clear, and do not leak. The electrical system is not normal. The heating system, temperature control, and various appearances are not operations. Solid; low-speed test of empty auxiliary vehicles, investigation equipment is not working properly; launch a vacuum pump setting table, the survey is not normal; smooth lubrication of various equipment smooth parts. If you find something wrong, remove it in time.

3 installed head and set. According to the type of product, scale, choose a good standard. Install the head in the following order.

4. Granulator operating drive.

5. After driving at a constant temperature, drive the car and tighten the flange bolts of the pelletizer one more time before driving to eliminate the difference between the thermal expansion of the bolts and the machine head. The order of the tight head bolts is diagonal tightening and the force must be uniform. . When tightening the head flange nut, the requirement is close to the same tightness, otherwise the material must be run.

6. When the granulator is in operation, press the button “Prepare to drive” and then the “Drive” button, then slowly rotate the screw speed adjustment knob, and the screw speed will start slowly. Then gradually accelerate, with a small amount of feed. When feeding, pay close attention to the change of the indicator of the main unit current meter and various indicators. Screw torque cannot cross the red mark. During the operation of the granulator, no one can stand in front of the die before the plastic profile is extruded, so as to avoid the occurrence of an injury accident due to the bolt being pulled off or the material being wetted and foamed. After the plastic is extruded from the die, it is necessary to cool the extrudate gradually, introduce the traction equipment and the sizing die, and start the equipment. Then based on the appearance of the control instructions and the need for extruded products. Make appropriate adjustments for each part so that the entire extrusion operation reaches normal conditions. And according to the requirements of adding materials, twin-screw granulator operation selects the meter feeder to feed evenly at equal speed.

7. Install and disassemble the heads, screws and other heavy parts. The safety items that should be paid attention to in the operation of the granulator include: electrical, thermal and mechanical changes and handling of heavy parts. The granulator workshop must have lifting equipment. To ensure safe production. The key to the operation of the granulator is not the same but it is also the same. Information on the plastics machinery industry gives you an overview of the same methods of operation when extruding various products and the key to operating the granulator. When manufacturing different plastic products.

8. The operation of the granulator can usually be judged according to the appearance of the extruded material. When the die is discharged uniformly and the plastic is excellent, it can carry out the styling. The degree of plasticity depends on the experience. That is, the appearance of shiny, no impurities, no foam, char material and discoloration, squeeze the extrusion material to a certain level does not appear burrs, cracks, there is a certain degree of elasticity, at the moment to clarify the material plasticization outstanding. If the plasticization is poor, the screw speed, barrel and head temperature can be properly adjusted until the demand is reached. According to technical requirements, it is normal to check various technical parameters at regular intervals. And fill in the technical documentation. According to quality inspection standards to view the quality of profile products, found that doubts and timely adoption of treatment methods.

9. The parking of the granulator is operated by squeezing the plastic in the granulator and stopping the feeding of the granulator. When the screw is exposed, the barrel and head are closed and the heating is stopped. Make the screw and auxiliary machine stop work. Closed granulator and auxiliary power supply.

10. Install the head. Finish the components of the perforated plate and the head. When finishing, in order to avoid damage to the inside and outside of the head, 3 turn the head flange. The remaining material in the head is finished with steel law and steel sheet, and then the plastic adhering to the head is ground with sandpaper, polished and painted with oil or silicone oil to prevent rust. After removing the head, the screw, barrel finishing. Re-start the host, plus parking materials (or broken material) to clean the screw, barrel, screw at the moment choose low speed (sr/min or so) to reduce wear. After the parking material is crushed into a powdery shape and thoroughly extruded, the residual pellets and powder may be repeatedly blown from the charging port and the exhaust port by using compressed air until no residual material remains in the barrel, and the screw speed is reduced to zero until the cylinder is stopped. Granulator, closed main power and total cold water valve.

In addition to grasping the operation of the granulator, knowing that the problem of the plastic granulator's failure, seizure, and disposal is the most important thing in extending the lifespan and normal operation of the granulator.