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扭力大，散熱佳，極適用於原紙架、高速復卷機
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COMBIFLEX |
solution to the thermal problems associated with aircooled brakes and clutches |
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Pneumatically operated Disc Brakes and Clutches with standard calipers:
- Suitable for all types of applications
- Suitable for high heat dissipation
- Ideal for continuous slipping service
- Brakes with torque ranging from 0,075 to 462 daNm, and with up to 42 KW heat dissipation capacity
- Clutches with torque up to 152 daNm, and heat dissipation capacity of 7,5 KW
- Components can be assembles to make a simple caliper and disc brake
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Unsolved problems with standard air cooled brakes:
The primary function of brakes is the conversion of mechanical energy into heat, which is then dissipated into the atmosphere.
The amount of heat which can be dissipated by air cooled Disc Brakes is dependent on a high rotational speed, large disc diameter, and large radiant surface. In continuous slipping applications, for example, web tension control, it is common for a high energy capacity, but often the average speed is low, leading to the requirement of a larger disc diameter than would otherwise be required.
This is the principle, which, until now, brake size calculations have been based, leaving several unsolved problems.
‘Low heat’ dissipation
The energy remains constant while the disc speed varies. At low speed this produces build up of heat.
Problems and/or disadvantages
| Overheating |
| Larger brakes - having an increased radiant surface - are required to dissipate the heat |
| Higher costs |
| ‘Fading’ of the lingings and frequent noise problems? |
| High wear rate on larger discs due to increased slip velocity |
| Unstable friction co-efficient, due to higher operating temperatures |
| The high inertia of a large diameter disc, and high speeds at the small core diameters makes accurate tension control difficult even with sophisticated controls |
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Main advantages of the Combiflex System
To try to solve the problems encountered by traditional brakes our highly experienced engineers strived to produce the perfect heat exchanger. The first step was to design a bi-directional turbine on the braking element.
The second step was the surrounding housing, with a ventilation hole pattern permitting air circulation from the middie to the periphery of the unit, with the addition of an electric fan fitted to the centre of the housing, the best possible thermal power dissipation was achived without high dependency on speed, and avoiding the need to increase the disc diameter.
All the heat is duly transferred
The housing, turbine disc, and electric fan combine to give the effect of a highly efficient heat exchanger, which does not rely heavily on speed to dissipate the thermal energy which is generated.
No problems / Just advantages!
| Dimensionally smaller units, giving a more compact machine design |
| Reduction in price due to smaller design |
| Lower top speeds minimise the wear of the linings |
| Constant controllable torque from a stable friction lining material |
| Leading to total dependability |
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| Now the temperature factor can be disregarded...
With the Combiflex Brakes and Clutches, overheating can be completely eliminated. In fact, their heat dissipation is such that they remain cool in all operating conditions. |
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Ventilation through Combiflex turbine disc |
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Constant ventilation through electrofan |
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Standard brakes ventilation |
| also wear is minimised...
With the under control and lower top speeds the friction material can enjoy a new life... a longer life. This reduces the down times, and spares requirementes. From our experience, with over 5000 Brakes in permanent service, we can assure a lining life which exceeds 10.000 hours. |
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With standard brakes |
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With Combiflex brakes |
| and simplified assembly...
The central turbine disc is supplied as standard with a conical adaptor which eliminates the requirement for keys,stop rings etc, end also guarantees the true alignment of disc to shaft. |
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Lets go into details
Combiflex = heat exchanger |
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Combiflex
simple assembly
The modular design of the Combiflex unit gives total versatility. The simple addition or removal of calipers can be achieved easily on both Clutch and Brake assemblies, to allow for a change in machine operating conditions, to improve tension control, or to give emergency stop facility.
Before using other Brakes,please do not forget the simplicity of the Combiflex system - you will be richly rewarded. |
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