The granulator operation includes a series of links, such as equipment, adjustment, commissioning, operation, protection and repair. When using the granulator, special attention should be paid to its characteristics. Grasping the key to the operation of the granulator is obviously very important. Because of the natural wear and tear in the process of using mechanical equipment, the wear and tear will be faulty, and the reasonable and correct operation will greatly reduce the wear and tear. Speed, extending the life of the machine, so knowing the granulator operation strategy is very necessary, the specific content is as follows:

1. Pre-operation of granulator operation: Plastics used for extrusion molding should pay attention to its boring doubts. The primary raw materials should reach the required boring demand and further boring if necessary. The material is sieved to remove agglomerates and mechanical impurities.

2. When the granulator is in operation, check whether the water, electricity and gas systems in the equipment are normal, ensure that the water and gas channels are unblocked, not leaking, whether the electrical system is normal, the heating system, temperature control, and various appearances are not operations. Reliable; auxiliary machine empty car low-speed test operation, investigate whether the equipment is normal operation; launch the fixed table vacuum pump, investigate whether the operation is normal; the smoothing parts of various equipment are smooth. If problems are found, they should be removed in time.

3. Install the machine head and set the sleeve. According to the type and scale of the goods, the standard of the machine head is selected. Install the machine head in the following order.

4. Driving of the granulator operation.

5. After the constant temperature, you can drive. Before driving, tighten the head and granulator flange bolts once to eliminate the difference between the bolt and the thermal expansion of the head. The order of the bolts is tightened diagonally and the force should be even. . When tightening the flange nut of the head, the demand is tight together, otherwise it is necessary to run the material.

6. When the granulator is in operation, press the “Prepare to drive” button, then connect the “Drive” button, then slowly rotate the screw speed adjustment knob, and the screw speed will start slowly. Then gradually accelerate, with a few feeds. Pay close attention to the change of the indicator of the main current meter and various indicator heads when feeding. The screw torque cannot cross the red mark. When the granulator is operated, no one should stand in front of the die before the plastic profile is extruded to avoid the accident caused by bolt breakage or wet foaming due to the material. After the plastic is extruded from the die, it is necessary to gradually cool the extrudate and introduce the traction device and the sizing die, and start the equipment. Then according to the indication value of the manipulation appearance and the demand for the extruded product. The parts are adjusted accordingly to bring the entire extrusion operation to a normal condition. And according to the demand plus sufficient material, the twin-screw granulator operation selects the metering feeder to uniformly and evenly feed.

7. Loading and disassembling the rough parts such as the machine head and the screw. The safety items that should be paid attention to during the operation of the granulator are: electric, thermal, mechanical transformation and loading and unloading of rough components. Lifting equipment must be available in the granulator workshop. To ensure safe production. The key to the operation of the granulator is different but it has the same. The information on the plastic machinery industry gives you an introduction to the same operation methods when squeezing various products and the key to the operation of the granulator. When manufacturing different plastic products.

8. The driving of the granulator operation can usually be judged according to the appearance of the extruded material. When the die is discharged uniformly and the plastic is excellent, the styling sleeve can be pulled. The degree of plasticization needs to be judged by experience. That is, the appearance is shiny, no impurities, no foaming, coke and discoloration. The extruded material is squeezed by hand to a certain level without burrs and cracks, and has certain elasticity. At this moment, the plasticization of the material is outstanding. If the plasticization is poor, the screw speed, barrel and head temperature can be adjusted properly until the demand is reached. It should be checked regularly according to the technical requirements whether the various technical parameters are normal. And fill in the technical record sheet. Check the quality of the profiled goods according to the quality inspection standard, and find the problem and adopt the treatment method in time.

9. The parking of the granulator operation, the plastic in the granulator is squeezed, and the granulator operation stops the feeding. When the screw is exposed, the barrel and the head power are closed, and the heating is stopped. Stop the screw and auxiliary machine. Close the granulator and auxiliary machine power supply.

10. Install the machine head. Finish the perforated plate and the various parts of the machine head. In order to avoid damage to the inside and outside of the machine head during finishing, turn the head to the flange. The remaining material in the machine head is finished by steel law and steel sheet, and then the plastic adhered to the machine head is ground with a sandpaper, and lighted, coated with oil or silicone oil to prevent rust. After removing the machine head, the screw and barrel are arranged. Re-start the main engine, add the parking material (or broken material) to clean the screw and the barrel. At this moment, the screw is selected at low speed (sr/min or so) to reduce wear. After the vehicle material is crushed into powder and thoroughly extruded, the residual pellets and powders can be repeatedly blown out from the feeding port and the exhaust port by compressed air until the barrel has no residual material, and the screw speed is reduced to zero, and the production is stopped. Granulator, closed main power supply and cold water main valve.

In addition to grasping the operation strategy of the granulator, it is known that the analysis of the plastic granulator, the cause of the attack and the disposal method are the top priority of extending the life of the granulator and the normal operation.

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