Friday, 20 Apr 2018
 
 
System Structure Print









































System structure
There are two system classes based
on work piece weight (up to 8 kg
and up to 130 kg), subdivided in turn
into different system sizes based on
pallet size.



Lightweight pallets are used for
work pieces weighing up to 8 kg:
• ST-600 - system width of 90 mm
• ST-700 - system width of 160 mm
• ST-710 - system width of 210 mm
• ST-715 - system width of 260 mm
In these models, the weight of the
work piece, the work piece fixture
and the pallet rests directly on the
chain.

Heavy-duty pallets are used for work
pieces weighing more than 8 kg:
• ST-815 - system width of 260 mm
• ST-820 - system width of 360 mm
• ST-840 - system width of 460 mm
In these models, the weight of the
work piece, the work piece fixture
and the pallet is taken up by swivel
rollers which rest on the side profiles.
The chain is subject to a spring load
of about 2 × 40 N only.





















The drive mechanism
Within a 90 or 180 degree curve
module the transfer chain is guided
through a chain wheel which is
driven by a spur gear motor. Forces
are transmitted via the 10 mm steel
bolts in the chain links.
An adjustable mechanical sliding
clutch protects the system against
overload and is specially set for
each drive system.
The desired chain speed is achieved
by changing gear ratios. The speed
can be adjusted continuously in
a range of ± 2 0 % by means of a
frequency converter.

 

The transport mechanism
A robust plastic chain serves as
means of transport for the pallets
which are guided to the work sites
and stations as directed by the
control process.
The pallets are moved by friction
between the sliding block and the
transport chain.
Pallets can be stopped with a stop
module in manual work stations and
before reaching automatic stations.
In the meantime, the chain keeps
transporting the other pallets in
circulation.
A centring module raises the pallet
from the chain in the stations and
precisely positions it.