2011年12月16日星期五

Three crystal frequency in the plastic machinery for energy saving applications

Plastic through the extruder into a uniform melt plastics and plastics to create the pressure, constant temperature and to screw continuous, quantitative, constant pressure to squeeze the nose. Most thermoplastics are used this way, screw extruder with a variety of different models and specifications, is the most commonly used extruder screw extruder. AC inverter drive host extruder, the extruder can fully meet the technical requirements to achieve the necessary process control indicators, over many years after the actual operation point of view, stable operation, product adaptability, economic benefit.A host is a plastic extrusion machine extrusion machine, which consists of extrusion system, transmission, and heating and cooling system.1 extrusion system extrusion systems including screw, barrel, hopper, nose, and die, plastics and plastics by extrusion systems into a uniform melt, and in the process established under the pressure of being screw continuous extrusion die.(2) the role of transmission is driven screw drive system, the supply screw extrusion process in the required torque and speed, usually by the motor, gear unit and the bearings and other components.3.. Heating and cooling equipment heating and cooling the plastic extrusion process can be a necessary condition.Second, the auxiliary equipment of plastics extruder auxiliary devices include pay-off, straightening equipment, warm-up device, cooling device, traction device, Meters, Spark Tester, take-up device. Out of the use of different units with the optional auxiliary equipment are not the same. As well as Cutter, dryer, printing devices.Third, the control system of plastic extruder control system including heating systems, cooling systems and process parameter measurement system, mainly by the electrical, instrumentation and actuators (ie, control panel and console) composition. Its main role is: to control and regulate the main auxiliary drive motor, the output meet the technical requirements of speed and power, and enable coordination of main and auxiliary; detect and adjust the temperature of the plastic extrusion machine, pressure, flow rate; to achieve control of the entire unit or automatic control. Extruder drive electrical control can be divided into two parts, control and temperature control, to achieve the extrusion process, including temperature, pressure, screw rpm, cooling screw, barrel cooling, product cooling and diameter control, and traction speed, neat cable on the reel and to ensure an empty plate to full plate from the constant tension take-up control. One set of screw speed control is the core of the device. Screw speed and stability in the regulation of the host drive one of the important process requirements. Screw speed and directly determine the volume of the plastic extrusion speed, normal production always want the highest possible speed and to achieve high yield, the extruder screw speed requirements from the start to the desired operating speed, the available speed range to be large. And stability requirements for high speed, because speed fluctuations will lead to fluctuations in the amount of extrusion, impact extrusion quality, so there is no change in the traction line speed case, the change will cause the cable diameter. Similarly, such as wire-speed traction devices can also cause large fluctuations in the changes in cable diameter, screw speed and traction stage through the operation reflected the appropriate instrumentation, extrusion should be closely observed to ensure high yield.
plastic sheet line-PC, PS, HIPS, ABS, PP and PE plastic sheet & plate extrusion line
Applicable scope of PC endurance board:Garden, the recreation place, decoration strangely and the corridor pavilion; Internal and external ornaments in the commercial building, curtain wall of the modern urban building; transparent container of aviation, the windscreen before the motorcycle, the plane, the train, the steamer, the submarine, army and police’s shield, the telephone booth, advertising signpost, the advertisement of the lamp houses, the expressway and overhead way of the city partition protective screen.Application of PMMA board (Acrylic board):Used in the instrument widely, the part of the instrument, lamp and lanterns, decoration, construction material, the plane, auto fittings, medical equipments, arts and crafts product, the insulating material of the electric apparatus, the sample, the sign and various light industry, culture and education, and daily life articles, etc…..Application of the bathtub board:Co-extrude PMMA-ABS and compound them together. Not only have the surface gloss characteristic of acrylic board, but also given consideration to ABS board shock-resistant advantage. The products apply to the fields of bath products widely, such as the bathtub, the shower cabinet, the vapour room, etc.Application of ABS, HIPS refrigerator board:Can be use in gallbladder in the refrigerator, door gallbladder, the drawer, water contained plate, etc.
Main Technical Parameter
Applicable scope of PC endurance board:Garden, the recreation place, decoration strangely and the corridor pavilion; Internal and external ornaments in the commercial building, curtain wall of the modern urban building; transparent container of aviation, the windscreen before the motorcycle, the plane, the train, the steamer, the submarine, army and police’s shield, the telephone booth, advertising signpost, the advertisement of the lamp houses, the expressway and overhead way of the city partition protective screen.Application of PMMA board (Acrylic board):Used in the instrument widely, the part of the instrument, lamp and lanterns, decoration, construction material, the plane, auto fittings, medical equipments, arts and crafts product, the insulating material of the electric apparatus, the sample, the sign and various light industry, culture and education, and daily life articles, etc…..Application of the bathtub board:Co-extrude PMMA-ABS and compound them together. Not only have the surface gloss characteristic of acrylic board, but also given consideration to ABS board shock-resistant advantage. The products apply to the fields of bath products widely, such as the bathtub, the shower cabinet, the vapour room, etc.Application of ABS, HIPS refrigerator board:Can be use in gallbladder in the refrigerator, door gallbladder, the drawer, water contained plate, etc.

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