Extruder outlet pressure by a variety of factors, there are large fluctuations, will be able to affect the product's dimensional accuracy, if we exit the extruder die and between the installation of a melt pump can be used to stabilize the extruder outlet pressure fluctuations, making the linear extrusion possible, thereby enhancing the dimensional accuracy of plastic products, increase in unit time the output of the extruder. Hartcourt melt is a positive displacement pump conveying equipment, high-precision gear clearance and volume structure design, so that's out of stable equilibrium is possible in the chemical, grain, plastic film, sheet, plate, extrusions, tubes , wire and cable, drawing, composite extrusion production line is widely used and achieved good results:http://www.prmindustry.com/Abstract...Articles section 1 to achieve stable extrusion, extrusion products to improve dimensional accuracy and reduce scrap. In the extrusion process, the feeding quantity of uniform material, barrel and head temperature fluctuations, screw speed of the pulse and so it is difficult to avoid. Used to eliminate melt gear pump feeding system feeding error, the upstream process can be greatly reduced transmission of volatility, fast access to a stable working condition, size extrusion products to improve accuracy, reduce scrap.
(2) to increase production, reduce energy consumption, low-temperature extrusion, to extend the life of the machine. As the extruder the polymer melt pump is installed, the vacuum function of the extruder to complete the transfer to the gear pump, extruder can work under low temperature in the low pressure, leakage flow greatly reduced yield. Extruder gear pump more effectively than the establishment of head pressure, and reduces back-pressure extruder, screw axial force to bear down and prolong life.
3 out of linear features, easy on the coordination of downstream devices. As the leakage flow less gear pump, pump capacity and speed of delivery of basic linear, gear pump speed changes, the flow can know exactly, because you can determine the upstream and downstream devices to synchronize work with the gear pump speed, use of gear pump inlet, outlet collection of pressure, temperature and other information, the extrusion process to achieve full-line monitoring and feedback control.
Siemens PLC control system, programmable control mode, equipped with advanced human-machine interface to the pressure, temperature, flow, speed full range of control, worry-free automatic and manual control switch, the control system can eliminate all good kinds of factors extruder pressure fluctuations, stable spout pressure to maximize the precision melt pump extrusion advantages.
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Peter Huang
PRM Industry is a highly professional Plastic, Rubber and Metal product manufacturing group. We specialize in providing our customers the integrated solutions of plastic, rubber and metal products. With more than 30 years manufacturing experience, we have been doing, and we also own the capabilities to do, is listening to what our customers need and supplying them the best solutions.
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