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Linear Drive
The CLEAN-DRIVE® conveyor is an asynchronous transport
system for process cassettes, shipping cassettes and pallets
in the disk drive, semiconductor, FPD and pharmaceutical
manufacturing environments. It is one of several versions of
the ERECT-A-LINE® family of conveyors.
The CLEAN-DRIVE® system allows material movement within
the factory that minimizes work in progress. Its inherent
ability to create buffers and its constant availability to
operators and process tools minimizes storage, cuts cycle
time, and increases throughput like no other system.
Elastomer covered driving wheels on one side of the drive
element transport pallets or cassettes while they rest on load
bearing idler wheels on both sides. When a pallet or cassette
is stopped, the drive wheels underneath it also stop. When it
is released, the drive wheels resume turning. While a pallet
or cassette is at rest, the constant forward force exerted on it
by the driving wheels is ample to convey it forward when free,
but not sufficient to overcome a stop.
Forward motion of the pallet or cassette can be stopped at
any time by a hard stop mechanism creating a natural buffer
of accumulated pallets or cassettes. SOFT BUFFERING™
can be achieved through the use of electronic sensors.
Because the drive wheels stop when a pallet or cassette is at
rest, there is no dynamic friction between them, making the
CLEAN-DRIVE® unique, and eliminating the abundance of
minute particles generated by friction based systems. |
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