Plastic Auxiliary Machinery-Feeding/Mixing Equipment-Metering System
Brief Description:The twin-screw extruder side feeder is equipped with a multi-orifice gas-extracting isolation device, which connects to an external vacuum system to remove gases from the material. For feed-restricted materials, this setup can increase the feeding capacity by up to three times. By optimizing the screw structure in the feeding area according to the product characteristics, both output and economic efficiency can be further improved.
Twin-screw extruder side feederPrecautions：
The inner cavity of the die head should be streamlined to ensure that the material can be extruded evenly along the flow path, avoiding overheating and decomposition due to stagnation. There must not be any abrupt narrowing in the die head, and there should be no dead zones or stagnation areas. The flow path should be as smooth as possible, with a recommended surface roughness Ra value of 0.4μm.
2. Sufficient compression ratio: The die head should be designed to generate enough compression ratio according to the different types of plastic products and plastic varieties, to eliminate the weld lines caused by the diverter supports and make the product dense.
3, Correct Cross-Sectional Shape Due to factors such as the properties of plastics, pressure, density, and shrinkage rate, there is a difference between the cross-sectional shape formed by the die of the machine head and the actual cross-sectional shape of the product. This factor must be considered in the design to ensure that the die of the machine head has a reasonable cross-sectional shape.
4. The design should feature a compact rhythm, easy disassembly and assembly. Under the condition of meeting mechanical performance, the die head should be designed to have a well-paced advancement, tight connections, uniform heat transfer, convenience for disassembly and assembly, and no material leakage.
5. Material selection should be reasonable; the die head should use steel with good corrosion resistance, wear resistance, tensile strength, and higher hardness. In some cases, it also needs to be chrome-plated according to the situation.
Common faults:
Check the control panel of the equipment to see if there are any issues, such as the parameters of the feeder, whether the suction and discharge times are correct. If there is a problem here, it may not be able to suck material normally, and should be adjusted and resolved promptly.
2. Check the pneumatic pump to see if its compressed air source pressure meets the relevant regulations. In most cases, the air source pressure for a pneumatic pump is 6-7 MPa. If the pressure does not meet the requirements, check whether the air supply line needs to be replaced.
3. The inability to properly draw in material may also be due to the disassembly and reassembly activities of the machine, resulting in air leakage at the clamp between the top cover and the barrel, thus preventing normal material drawing operations.
4. Open the top cover, remove the filter plate, and observe if there is too much dust or any clumping on the filter element. These issues can lead to improper suction. To resolve this, simply clean it with compressed air.
Twin-screw extruder side feederMaintenance Key Points:
1. For material batching and metered feeding, to ensure uniform and stable feeding and prevent material from flowing freely, it should be installed horizontally. For continuous feeding of general materials, it can be installed at a 10° downward angle. For sticky materials and those with higher moisture content, it can be installed at a 15° downward angle.
2. After installation, a clearance of 20mm should be left for movement, it should be level horizontally, and the suspension device should use a flexible connection.
3. Before the no-load test, all bolts should be tightened once, especially the foundation bolts of the vibrating electromagnet. After continuous operation for 3-5 hours, they should be retightened. During the test run, both vibrating motors must rotate in the same direction.
4. During the feeding process, the amplitude, current, and noise stability should be checked frequently; if any abnormalities are detected, the machine should be stopped immediately for handling.
5. Lubricating oil should be added to the electromagnetic bearings every 2 months, and once a month during the high-temperature season.
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).
