Brief Description:The electrical control system of the twin-screw extrusion granulator adopts advanced PLC control technology, combined with multiple inverters, enabling high-precision, wide-range speed adjustment for feeding, extrusion, and cutting according to process requirements. It also features comprehensive process interlocks and audio-visual fault alarms, ensuring a perfect and reliable control system.
Characteristics of twin-screw extruder granulator:
This production line integrates mixing, conveying, feeding, and extrusion, achieving automated continuous operation with high production efficiency.
2. Compact structure, occupying minimal floor and space, suitable for flat installation.
3. The production process is divided into segments with closed-loop temperature control, where the internal mixer, feeder, and extruder each have their own heating and cooling systems, controlling their respective temperatures according to the process requirements.
4. The feeding mechanism adopts a dual-paddle screw design, featuring strong material intake capability. It is particularly suitable for extruding and pelletizing lump materials directly from the internal mixer.
5. The barrel and screw are both made of high-quality 38CrMoAIA alloy steel, which has been nitrided for high hardness, wear resistance, and corrosion resistance.
6. The die head adopts a manual screen changing or quick non-stop screen changing mechanism to improve production efficiency.
7. The electrical control system adopts advanced PLC control technology, combined with multiple inverters, enabling high-precision, wide-range speed adjustment for feeding, extrusion, cutting, and other multi-machine operations according to process requirements. It also features full-process interlocking, audio-visual fault alarms, and other function controls, ensuring a complete and reliable system.
Operating Procedures for Twin-screw Extrusion Pelletizing Machine:
Extruder
1. Inspected the feeder and hopper to ensure there were no impurities in the hopper;
2. Check that all screws are in good condition;
3. Check if the vacuum equipment of the extruder is unobstructed, ensuring the vacuum level is no less than -0.08MPa. The vacuum bucket should be cleaned thoroughly twice per shift. Do not use metal tools to clean the vent holes; instead, use plastic or wooden sticks to remove impurities from the barrel's vent holes.
Auxiliary Equipment
Check if the cooling water system is unobstructed.
2. Inspect the cutting machine to ensure nothing is obstructing the saw;
3. Ensure that all electrical components are in good condition.
III. Mold Installation
1. Ensure the mold is installed horizontally and tighten the bolts;
2. Ensure the strength of each bolt and equal clearance between the extruder flange and the mold flange;
3. Secure the heater and thermocouple to the mold in sequence. The heater must be pressed tightly against the surface of the mold.
IV. Installation of the Sizing Die and Water Tank
The shaping mold must be horizontally installed on the shaping table, ensuring that the shaping mold and the die head are level both left to right and up and down.
2. The cooling water pipes are connected to the sizing die in sequence and in an orderly manner, ensuring that the joints do not leak.
Maintenance methods for twin-screw extruder granulator:
1. The equipment should first be placed in a well-ventilated area to ensure that the heat generated by the motor can dissipate, thus extending its lifespan.
2. Lubricating oil should be regularly added to the bearings to ensure lubrication between them.
3. Regularly check the tool screws; after 1 hour of use, tighten the screws of the moving and fixed blades with a tool to enhance the fixation between the blades and the blade holder.
4. To ensure the sharpness of the cutting edge, the tool should be checked regularly to maintain its sharpness and reduce unnecessary damage to other components caused by a dull or chipped blade.
5. When replacing the blades, the gap between the moving blade and the fixed blade: for 20HP and above, the gap can be appropriately increased as the recycled material gets thinner.
6. Before the second start, clear any remaining debris in the machine room to reduce the starting resistance.
7. The inertia cover and pulley cover should be opened regularly to clean the dust outlet below the flange, as powder from the pelletizing chamber can enter the shaft bearings.
8. The recycling granulator for waste and inventory resins should be kept well grounded.
Nanjing Xintuo Intelligent Equipment Co., Ltd. was established on May 29, 2020, with Zhou Xianting as the legal representative. The registered capital is 10 million RMB, and the unified social credit code is 91320113MA21LF2H92. The company is located in the Baima Town Industrial Concentration Zone, Lishui District, Nanjing City. It belongs to the other manufacturing industry. Its business scope includes: Permitted projects: import and export of goods; import and export of technology (projects that require approval by relevant departments can only be carried out after obtaining such approval, specific business items are subject to the approval results). General projects: sales of intelligent material handling equipment; research and development of machinery and equipment; general equipment manufacturing (excluding special equipment manufacturing); specialized equipment manufacturing (excluding licensed specialized equipment manufacturing); sales of metal products; wholesale of electronic components; sales of instruments and meters; sales of artificial intelligence hardware; processing and sales of mechanical parts and components; general component manufacturing; sales of plastic products; production and sales of Class I medical devices; sales of Class II medical devices; sales of health supplies and disposable medical supplies; sales of special labor protective equipment; technical services, technical development, technical consultation, technical exchange, technology transfer, and technology promotion (except for projects that require approval, activities can be conducted independently according to the business license). The current operating status of Nanjing Xintuo Intelligent Equipment Co., Ltd. is active (in operation, open, registered).
