Ogura hysteresis clutch is used to tighten caps on bottles.
Ogura's new PHT series.
Will depend upon torque requirement.
Description of Operation
Bottles are fed from a conveyor to the bottle capper mechanism. As the bottles come around a feed drive role the capper comes down onto the bottle and spins down tightening the cap. Once the cap has bottomed out the PHT unit slips, delivering the predetermined torque set on the PHT clutch.
Reason for Selection of the Ogura PHT Clutch
Unlike friction slip clutches which can have a variance in torque setting, the Ogura PHT hysteresis clutch transfers torque via a magnetic field with no frictional contact. This means that whether the application is turning at a 3 of an RPM or 1,000 RPM the same torque is delivered. The PHT hysteresis clutch operates the same way a magnetic particle clutch operates, but without the particles. This means that there is no chance of powder packing, so the PHT units can be used in both horizontal and vertical installations. The PHT units are manually adjustable by turning the magnets. Once set, they will deliver the proper amount of torque consistently and repeatedly. Since they are permanent magnet hysteresis units, no electrical power is required to operate them. This simplifies the customers installation because there is no additional control to interface with.
Besides bottle capping manufacturers, there are many companies that make their own capping machinery. Most of the major pharmaceutical manufacturers have their own machinery departments. Typically cap torque on pharmaceutical products is critical because many times these bottles are being opened by the elderly and if the cap torque is too tight a bottle may be extremely difficult or sometimes impossible to open. Wire tensioning or fiber tensioning for the textile industry are also very good possibilities.