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Single screw extruder, twin screw extruder

Hits:10058          Date:2015-07-13 15:56:29

Single screw extruder
        Single screw extruder for extrusion soft and hard PVC, PE and other thermoplastic plastics, processing a variety of plastic products, such as film blowing, pipe extrusion, pressing and pulling ribbon may also be used to melt granulation. Plastic extrusion machine is advanced in design, high in quality, good in plastic, low in energy consumption, with the characteristics of low noise, stable operation, large bearing capacity, long life and so on.   Introduction       single screw extruder is generally divided into three sections, according to the size of the screw diameter, pitch, and the depth of the screw to determine the effective length of three segments, the general by 1/3. & nbsp; & nbsp; & nbsp; high performance single screw extruder with the overall design of the double step type, strengthening plasticizing function, to ensure the high speed and high stable performance extrusion, special barrier comprehensive mixed refine design, to ensure the material mixing effect, high shear and low melting plasticizing temperature to ensure the extrusion materials of high performance at low temperature and low pressure measurement. Design concept and characteristics: high speed, high yield extrusion on the basis of Gaoping.   Principle of single screw extruder & nbsp; & nbsp; & nbsp; feed opening last thread began called conveying material here requirements cannot plasticization, but to preheating and pressure compaction, past the old extrusion theory that material here is loose and later by proof material here is actually a solid plug, is where the material after being squeezed is a solid like stopper, like, so long as to complete the transportation task is its function. The second section called compression section when the volume of helical groove is changed from big to small and temperature to reach the plasticizing degree, here to produce compressed by the conveyor section 3, here compressed to a. This is called screw compression ratio - 3:1, some machine changes completed plasticizing material into the third paragraph. Is the third paragraph metering section here material keep plasticizing temperature, just like the metering pump as accurately, quantitative transmission melt material, to supply the nose. At the same time, the temperature is not below the melting temperature, in general slightly high. & nbsp; & nbsp; & nbsp; single screw extruder is mainly used for extrusion soft and hard PVC, PE etc. thermoplastic plastics used, and the corresponding auxiliary (including molding machine head), processing a variety of plastic products, such as film, pipe, plate, ribbons, also can be used. Plastic extrusion machine is advanced in design, high in quality, good in plastic, low in energy consumption, with the characteristics of low noise, stable operation, large bearing capacity, long life and so on.   Single screw extruder Pipe extrusion: suitable for PP-R pipe, PE gas pipe, PEX cross-linked pipe, aluminum-plastic composite pipe, ABS pipe, PVC pipe, HDPE silicon core pipe and all kinds of coextrusion composite pipe. Sheet and sheet extrusion: suitable for PVC, PET, PS, PP, PC, etc.. Other kinds of plastics, such as wire, rod, etc.. Profile extrusion: adjusting the rotating speed of the extruder and changing the structure of the extrusion screw can be applied to the production of PVC, polyolefin, etc.. Modified granulation: suitable for all kinds of plastic blending, modification, enhanced granulation.   Idea The high speed on the high quality base, high-yield extrusion. The design concept of low temperature plasticization, ensure the high quality products of extrusion. The design of two order integral, strengthening plasticizing function, ensure the adjustment of high performance extrusion. The special mixing barrier, integrated design, to ensure the effect of mixing material. The high torque output, large thrust bearing. The gear, shaft for high strength alloy steel, carburizing, grinding processing. The high hardness, high smoothness, low noise. The PLC intelligent control, can realize the linkage between main auxiliary equipment. The easy to monitor the man-machine interface, easy to understand processing and machine status. The according to the need of replaceable control mode (temperature control). The material for the 38CrMoAL/A nitriding treatment, wear resistance. The strict temperature control precision, wind cooling and water cooling unite. The design of inlet is unique, has a perfect water-cooling device. The screw cylinder groove surface feed base set, with enhanced feeding function, high speed high yield extrusion provides guarantee.
Double screw extruder

Twin screw extrusion auxiliary unit mainly comprises a wire releasing device, straightener, preheating device, cooling device, traction device, meter, spark testing machine, wire device. Extrusion unit uses different equipped with auxiliary equipment are not the same, as well as cut off device, a drying device, a printing device etc..   Structure characteristic         the remarkable characteristic of the same direction parallel twin screw extruder is that the cylinder can be divided into the same time, the inner liner of the screw and barrel can be assembled. Advantage 1, wear condition       because it is easy to open, it can be found that the wear of the screw element, the inner liner of the machine can be repaired or replaced. It is not necessary to find out the problem of extrusion products, resulting in unnecessary waste. 2, reduce production costs & nbsp; & nbsp; & nbsp; manufacture of masterbatch, often need to change the color, if there is a need to replace the product, within a few minutes to open open type machining area. Besides, it can be through the observation of the screw on the melt profile to mixing process are analyzed. At present, the ordinary double screw extruder in the replacement of color, the need to use a large number of cleaning machine, which is time-consuming, electricity, and waste of raw materials. And split double screw extruder can solve this problem, color changes when, as long as a few minutes can quickly open the barrel, manual cleaning so that it can be no or less use of cleaning materials, saves the cost. 3, improve labor efficiency       in the equipment maintenance, the ordinary twin screw extruder often first to the heating, cooling system, and then the overall extraction screw. While the split double screw is not, as long as the release of a number of bolts, the rotation of the worm gear box to lift the upper part of the machine can be turned on the whole machine, and then carry out maintenance. So it can not only shorten the maintenance time, but also reduce the labor intensity. 4, Gao Niuju, high speed       the development trend of twin screw extruder in the world is the development of high torque, high speed, low energy consumption. The effect of high speed is high productivity. Split twin screw extruder is the category, its speed can reach 500 rpm. It has unique advantages in the processing of high viscosity, heat sensitive materials. & nbsp; & nbsp; & nbsp; at high speed, the core technology of high torque, high torque gear box of asymmetric and symmetric currently only Germany and Japan manufacturers master the core technology, the speed can reach above 1800 rpm, and the master the core technology, only in Sichuan are installed, a science and technology, at present is the high-end materials processing manufacturers to choose one of the major, belonging to the domestic independent innovation projects encouraged by the state 5, wide range of applications       wide application range, can be applied to a variety of materials processing 6, high output, high quality       the other advantages of ordinary twin screw extruder, which can achieve high output, high quality and high efficiency.   Application examples 1, glass fiber reinforced, resistant fuel granulation (such as: PA6, PA66, PET, PBT, PP. PC enhanced flame retardant, etc. 2, high filling material granulation (such as: PE, PP filling 75%CaCO.) 3, the granulation of heat sensitive materials (such as: PVC, XLPE cable) 4, Tony shaimuli (such as: 50% toner filling) 5, anti-static masterbatch, alloy, coloring, low filling blending 6, cable material granulation (such as: sheath material, insulation material) 7, XLPE pipe materials (such as: masterbatch for granulation of hot water crosslinking) 8, thermosetting plastic mixing extrusion (such as: phenolic resin, epoxy resin, powder coating) 9, hot melt granulation, PU reactive extrusion (such as: EVA hot melt adhesive, polyurethane) 10, K resin, SBS stripping  

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