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費(fèi)斯托比例壓力閥應(yīng)用
閱讀：1070 發(fā)布時間：2013-3-13費(fèi)斯托比例壓力閥VPPM
每種應(yīng)用場合都具有合適的參數(shù) – 只需按一下按鈕，即可在3組預(yù)設(shè)值中選擇
優(yōu)勢：
- 管式或法蘭式，電流可控，電壓可控，現(xiàn)場總線/以太網(wǎng)通過CPX終端通訊
- 操作方便：3 組預(yù)設(shè)值適合不同的流量 – 無需編程
- 串級調(diào)節(jié)：改進(jìn)動態(tài)響應(yīng)，精度高并優(yōu)化小信號特性
- 具有多傳感器控制的二級控制回路： 集成傳感器能實(shí)現(xiàn)*的控制效果和特點(diǎn)
- 過程可靠性：具有溫度補(bǔ)償功能，即使溫度變化也能保持壓力恒定
- 模塊化系統(tǒng)：為所有應(yīng)用場合提供合適的閥
VPPM比例壓力閥的應(yīng)用范圍
Automotive industry
Proportional valves VPPM to control axial forces in automatic screwdrivers
Pre-processing of components, such as pre-drilling or punching, is no longer necessary thanks to the use of special screws during the drilling and screwing process.
The usual tolerance problems are also eliminated. The axial force for flow drilling is applied via a tandem cylinder ADVU and controlled by a proportional valve VPPM.
The controller individually adapts the force applied by the cylinder, depending on process status and material.
Filling and packaging technology
Proportional valves VPPM for controlling vacuum, pressure and cylinder force
Lids are transported with a suction cup to a lid fitting station. The vacuum pressure must be proportional to the size and material of the lids in order to supply the right amount of ejector air. Proportional valves VPPM are used to control pressure for the venturi nozzles.
The lids are then pressed onto the containers. Proportional valves VPPM control the cylinder force in order to adjust the pressing power to each individual product.
Machine and equipment manufacturing
Proportional valves VPPM for web tension control
Constant web tension is crucial for good results in winding machines. The friction roller must always be precisely decelerated relative to the diameter of the roll which is being wound up. The VPPM regulates the braking force according to the setpoint provided by the machine’s controller.
Testing machines
Proportional valves VPPM for controlling pressing pressure
The adhesive forces of glues are tested in laboratory presses. The test objects are compressed at a specified force using heated pressing plates and are examined after they’ve cooled down. Pressing power can be varied individually with the VPPM.
Rubber and plastic processing machines
Proportional valves VPPM for controlling back pressure
Proportional valves VPPM ensure the precisely controlled profile haul-off in extrusion machines. They guarantee continuous, constant processing speeds for thermoplastics processing.
Print and paper industry
Proportional valves VPPM for setpoint control
A contact winding roller with an expandable profile prevents the rolls of paper in roller cutters from slipping during the winding process. Proportional valves VPPM control the clamping pressure of the contact winding roller according to the material to be wound, web tension or the quality of the paper rolls.
Laminating and coating machines
Proportional valves VPPM for pre-tensioning sheet material
When coating or laminating, various different web tensions are required depending on the material; these can be set with the aid of the proportional valves VPPM.
Process engineering
Proportional valves VPPM for diaphragm valve control
To simulate a wide variety of road surface conditions on an auto proving ground, the required amount of water is indicated by a potentiometer to proportional valves VPPM. These build up a pneumatic pressure which then activates the diaphragm valves.