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How does a Power and Free Overhead Conveyor work?

12.03.2021
Teleflex T4 power and free conveyor

How does a Power and Free Conveyor Work?

Power & Free conveyors are based on a twin-track system. The top track is used for thepowerchain and the bottomfreetrack for the carriertrolleys. On an equal pitchpusher dogsare fitted in the power chain and are used to pull the carriers around the system. The movable cams of the pusher dogs latch onto the trolley to form an interlink connection.

Stop stationsare used to disengage the link between the power chain and trolleys. When a stop station is closed the carrier will stop while the power chain keeps moving. Because of the pusher dog and trolley design multiple carriers can accumulate behind a stop station.

Afbeelding
power-and-free-concept-750
权力和自由是最灵活的automated overhead conveyor solution
Advantages of a Power & Free Conveyor
  • Compact and save design with movable parts inside the tack
  • Modular system with standard parts
  • Flexible design for optimal lay-out planning
  • Advanced automatic control system with touch screen user interface and remote access.
Components

Different standard components are available to design the most optimal conveyor lay-out. Thetrack sectionsare available as Power & Free, Free or only Power in standard or cut-to-length sections.

Bendscan be horizontal or vertical. The radius of the bends is often standard. Non standard bend can be made on request.

The power chain comes in standard chain link pitches and can be fitted withopen or closed bearings.

Depending on product dimensions and the conveyor lay-out the product carrier can have different trolley configurations. Using multiple trolleys the load capacity of carrier can be increased.

A Power & Free system needs adrive system. Depending on system parameters the drive mechanism can be acaterpillar driveor ascrew driveunit. For safety all drive units are utilized with a torque limiter that disconnects the drive force between the drive unit and gear motor.

Afbeelding
D8 Caterpillar Drive Unit
Caterpillar Drive Unit

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D8 Screw Drive Unit
Screw Drive Unit

Stop stations are available as standard design,ATEXorhigh temperaturefor curing ovens. Stop stations are controlled and monitored by thePLC/PC control system.

Switchesare installed at position where carriers must divert to other directions. Pneumatic cylinders with position sensors are used to actuate the switches. Depending on the position in the lay-out switches can also be self-switching. Switches are also controlled and monitored by the main control system.

To avoid a much as possible wear of the chain and trolleys alubrication unitcan be used. This automatic controlled device lubricates parts such as the chain links and bearings on a pre-set interval.

Special parts are available such aslift- and drop sections,transfer chains,pneumatic pushersand productrotation units.

There are also solutions to have a dipping tank crane system take over the products from the carriers and after the dipping process hang them back onto the carriers.

Below you can see a project video of aT4 Power and Freeconveyor in use. When you are interested in a Power and Free conveyor or any othermaterial handling solution, please contact us on+31 (0) 344 61 63 63or email:sales@railtechniek.nl

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