Contented and different the double screw extruder that deserves to mix demand

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In a lot of industry domains, often need to make the product achieves first-rate performance special the bead material that deserves to mix, plastic treatment industry is so right tailor-made the demand that matchs batch mixing increases ceaselessly. Manufacturer of extruder of Italian double screw developed a variety of matching batch mixing product line, with the treatment that matchs batch mixing at differring. Company of Icma San Giorgio is wooden model composite material (WPC) the potential user that produces a field and actual user organized a factory to open an activity. Come nearly a few years, company of Icma San Giorgio in wooden model composite material domain threw many capital to undertake research and development works. Actually, this company is the pioneer of WPC domain, in 1974 registered its machine craft international patent first times, use in the production that this craft still uses sheet in auto industry at present. The design plan that adopts at that time is to use different Xiang Xuan to turn double screw extruder, all constituent are passed advocate feed makings mouth to be fed. Polymer is farinaceous (at that time form of this kind of stock has an advantage) , in order to reduce material in hopper statified problem, be helpful for the flow of fuse-element photograph at the same time. The main good point of this kind of design is product line and craft simple, the pump of extruder sends function good, stability. To answer the change of field requirement, the company offerred more advanced technology program (patent filed 1992) , use turn with Xiang Xuan model of wood of production of double screw extruder composite material, every kinds of constituent is fed alone. Wooden pink is fed in the position before leaning on machine axes, here polymer is completely fused already. Its advantage is productivity taller (screw rotate speed is higher) , the quality that mix refine is good (cut capacity stronger) , and the stress that gives to Mu Fenchuan as a result of polymer fuse-element is inferior, reduced the possibility of composite material degradation. Wooden model introduced during the activity the main application of composite material, and the advantage that compares these data with traditional timber photograph, the key showed surprise to and with Xiang Shuang the function difference between screw extruder, and the impact of extruder work requirement to end item quality. In addition, the lab that has a few more publicly to all sorts of sample is analysed (SEM analysis, mechanical function checks, fiber length and color change) result, proved use photograph allows an agent to raise composite material the importance of final and mechanical function. Still introduced to produce a material finally (brace builds bead, wind cold build bead, underwater to build bead) , all sorts of solutions of sheet and profile. The core equipment that the spot shows product line is a MCM 112 40D turn with Xiang Xuan double screw extruder, its are than torsion 8.

1Nm/cm3, free cubage is 876cm3, highest screw rotate speed is 150rpm. Inspect the data that feeds, WPC top yield can achieve 1000 Kg/h. The unit that build bead is fluid annulus model, can make composite material cools quickly, avoid wooden pink to be squeezed from inside pattern plate after going out, be scorched. Cooling water and bead makings are emited into in a chamfer, firm has in centrifugal desiccator is being sent by pump later / fluid is detached. Final bead makings is carried vibration undertakes classify and cooling further in cooling unit. Of Bandera new-style deserve to mix product line crop to be able to amount to 1600-1700kg. Bandera company supplied one a complete set of to jam a product line to user of an important Mexico recently, horary producible 1, 600-1, 700kg polypropylene (30% ) , calcium carbonate (70%) and other of all sorts of auxiliary match batch mixing. The main facility in this product line is the same as extruder of Xiang Shuang screw for (L/D= 42:1) , deserve to have 450kW advocate drive electric machinery, screw speed limits is 140-260rpm. Machine canister is comprised by canister shape module, package includes the screw on spline axis to carry and mix refine component. Using module to design is in order to make sure extruder is mechanical component and perfect corresponding relationship is obtained between the different level that mix refine. Squeeze a craft to divide 4 paces to finish: Carry polymer, heat, fused, make through cutting temperature lifts quickly; By distributing mixture screw package goes to sticking inpour leveling; Through perpendicular or flank is fed makings mouth and / or mouth of liquid feed in raw material joins additive and colophony; Exhaust. Product line distributes stock gravimeter of type of weightlessness of a 4 component measures a system, and 2 compulsive feeder that are used at feeding pink to expect. Product line is last it is horizontal axial cuts an unit, water / particle depart device and vibrating separator. Horizontal axial cuts bead room equipment to have cutting tool of a group of 4 helix and pattern plate, rotate among them speed is controlled by alternating current machine, electric machinery by pass feeling unit drive to undertake pressure adjustment. Carry a material by water, depart in water of centrifuge lieutenant general and bead makings. Special the corporation of high-powered extruder Industrie Generali SpA that matchs batch mixing production at soft hard PVC rolls out CGB of extruder of a kind of new-style double screw.

130L/D 28, use at producing soft, hard PVC to match batch mixing. New-style extruder is easy use, clear convenient, match stock water motive in order to reduce noise, match reducer of stock tall torque to optimize machine power. Machine canister passes an extremely efficient transportation with fan the system is cooling, heat use heater of pottery and porcelain, deserve to have in heater " cold / hot " exchange implement, control temperature accurately. To raise yield, arrive in the conditional make known to lower levels that does not have material stress first-rate leveling effect, undertook optimizing designing to screw appearance. The test that the user has makes clear, this extruder productivity is tall (the soft PVC crop of groovy fill is 2, 500 Kg/h) , at the same time specific power consumption is reduced considerably, got consequently the admiration of the user. Of Maris company deserve to mix those who squeeze a product line to include different series to turn with Xiang Xuan double screw extruder, extruder screw and machine canister all are modular structure. The design concept of functional module comes from the requirement of the perfect balance between mechanical to extruder component and each process. Advocate hello makings paragraph assemble have tall the screw package that carries ability. The transportation that polymer is later, heat and fused area, include tube of one or more machine among them paragraph. In this area, the pitch that carries package is lesser, and the geometrical appearance of mediate component and length benefit warm up at making material fast through cutting stress, mix thereby and refine polymer. Series VM was used to turn with Xiang Xuan in the is used at production to match batch mixing newest extruder that Maris company place develops screw. These extruder design an object with raising technical properties to be, be aimed at a requirement especially density of many fill low accumulation is light qualitative filling, long halt take time (reactivity is machined) or need efficient purify manier volatile constituent (solvent or monomer) applied domain. The main characteristic of this series equipment is volume ratio is amounted to 1.

78, screw rotate speed is 1, 800 Rpm, its advantage is productivity tall, can reduce cost and initiative investment. Comac company is particularly comfortable at high-powered those who mix batch mixing production is crowded give a clue. Comac company installed a productivity to be the product line of 2500 Kg/h about recently, product line distributes stock new-style turn with Xiang Xuan double screw extruder, its composition takes off 3 gas division, flank to feed makings area for ﹕ (mineral filling and fiber are joined in using Yu Xiangrong system) , gravitational and metric device and hydraulic pressure change a network implement. Main design uses this product line at production high-powered match batch mixing, if need,disperse in complex matrix of fine filling match batch mixing. This one successive product line that mix refine is compositive have dc of the metric system, machine that build bead, 700 KW machine, electric machinery connects an axis through safety implement join arrives on tall torque gear case. The diameter that can configure screw is 120 Mm, its are carried, compress and mix refine area classics to optimize, can achieve better dispersive result. In development level uses mathematical model to undertake study to screw appearance in order to reach higher performance level. Claudio Celata reachs equipment of machinery of Italian plastic balata and mould manufactory for Macplas magazine publisher trade association (ASSOCOMAPLAST) general manager. CNC Milling