Omron SYSMAC CJ Operation Manual page 323

How-to's
5-1-6-9 Example: Correcting the position of an axis
Mandrel for
bag forming
Vertical
sealer
External encoder
for slip compensation
Feeder
The picture shows the vertical fill and seal machine for packaging products
into bags. The bag material comes from a plastic film coil that is unwinded,
then it is shaped into the tube by a mechanical mandrel and at the same time
the tube is sealed vertically. The feeder movement is intermittent and the feed
length corresponds with the bag length. Once the bag is fed, the horizontal
sealer closes the bag, so it can be filled with the product. After that, the
process starts again, feeding the new bag.
∆d
After 1 bag
The feeder can work in two modes: without registration mark; and with
registration mark. Working without the registration mark is a simple point-to-
point incremental movement. In this case, there is no guarantee that the
feeder moves exactly the same distance as the design pattern. For example,
suppose the bag length that needs to be fed is 200 mm, but the real pattern is
200.1 mm. With simple point-to-point incremental movement without
E
20∆d
100∆d
After 20 bag
Section 5-1
Printed mark
Mark sensor
After 100 bag
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