Plastic granulator operation steps analysis

Pelletizing machine operation includes the machine equipment, adjustment, commissioning, operation, protection and repair and a series of links, the use of granulator should pay special attention to its characteristics. Grasp the granulator critical operation is obviously very important, due to the mechanical equipment used in the process of natural wear and tear, and wear to a certain extent will be defective, and a reasonable and correct operation, will greatly reduce the wear and tear Speed, extend the use of mechanical life, so know granulator operation Raiders is very necessary, as follows:

1. Pelletizer operation preparatory work: For extrusion molding plastic should pay attention to its boring doubt, the primary raw materials should meet the needs of the boring needs, if necessary, be further boring. Sieve the material and remove caking aggregates and mechanical impurities.

2. granulator operation, view equipment, water, electricity and gas system is not normal to ensure that water, gas dredge, do not leak, the electrical system is not normal, heating system, temperature control, a variety of appearance is not homework Reliable; Auxiliary empty low-speed trial operation, the investigation equipment is not working properly; Launched stereotypes table vacuum pump, the survey is not normal operation; Lubricating parts lubricated parts. If found defects in time to remove.

3. installed head and stereotypes. According to the type of goods, standards, select the nose standard. The following order of the nose installed.

4. Granulator operation of the car.

5. After the car can be heated, drive the machine head and granulator flange bolts should be tightened again to eliminate the difference between the bolt and the head thermal expansion, tight head bolts in the order of diagonal tightening, forced to be uniform . Tighten the head flange nut, the demand near the common elastic, or to run material.

6. When the pelletizer is operating, select “Prepare to drive” button, then “Drive” button, and then slowly rotate the screw speed adjustment knob, the screw speed is slow start. Then gradually accelerate, together with a small number of feeding. When feeding should pay close attention to the host ammeter and a variety of instructions to change the instructions head. Screw torque can not cross the red mark. Pelletizing machine operation, before the plastic profiles are extruded, no one shall stand in front of the die in order to avoid pulling off the bolt or due to wet material such as the release of the bubble injury accident. After the plastic is extruded from the die head, the extrudate is cooled and brought to the towing and shaping dies and the equipment is started. Then based on the control of the appearance of the indicated value and the demand for extruded products. Adjust the parts accordingly so that the entire extrusion operation reaches its normal condition. And based on the demand plus enough material, twin-screw granulator operation selection metering feeder evenly feeding.

7. Assembly and disassembly head, screw and other stupid parts, granulator operation should pay attention to the safety items are: electricity, heat, mechanical changes and rough parts handling and so on. Pelletizing plant must be equipped with lifting equipment. To ensure the safe production. Pelletizing machine operation is different but the key is the same. Plastic machinery industry information for you a brief introduction of the extrusion of various products the same way of operation and should pay attention to the operation of the pelletizing machine. When making different plastic products.

8. Pelletizer operation of the car, usually based on the appearance of extruded material to determine, when the die out of uniform and superior plastic can pull the stereotypes set. The degree of plasticization need to experience. The appearance of shiny, free of impurities, no foam, coke and discoloration, squeeze the extruded material by hand squeeze to a certain level does not show burrs, rips, there must be flexible, at the moment clarify the plastic material outstanding. If poor plasticization can be properly adjusted screw speed, barrel and nose temperature until it reaches the demand. According to technical requirements should be regularly check the various technical parameters is not normal. And fill in the technical record list. According to the quality inspection standards to view the quality of sections of the product and found that the timely adoption of doubt approach.

9. granulator operation of the parking, the plastic granulator light squeezed, granulator operation suspended feeding. When the screw is exposed, close the barrel and head power, stop heating. Make screw and auxiliary machine stop working. Closed granulator and auxiliary power.

10. Install the head. Finishing perforated plate and the head of the various components. Finishing time to avoid damage to the inside and outside the nose table, 3 open the head flange connection. The remaining material in the nose using steel law, steel finishing, and then sandpaper will be attached to the head of plastic grinding and polishing, coated with oil or silicone oil rust. After removing the nose, screw, barrel finishing. Re-start the host, plus parking materials (or broken material) clean the screw, barrel, at this moment choose low-speed screw (sr / min or so) to reduce wear and tear. To be parking material crushed into powder thoroughly extruded, the compressed air can be used from the feed port, exhaust port repeatedly blowing residual pellets and powder until the barrel is indeed no residual material, the lower screw speed to zero, the suspension Granulator, closed the total power supply and cold water total valve.