LA 404-2 Pattern Controller Manual.pdf - 第49页
LA 404-2 Pattern Control System 43 P/N 7 1 1 9995A 2006 Nordson Corporation LA 4 04- 2 Is sued 12/06 Random B ead Start Gap 0 mm Stop Gap 0 mm O676 1. T o set Start Gap a. Press t he or button f or the cursor to appear b…
LA 404-2 Pattern Control System
42
P/N 7119995A
2006 Nordson Corporation
LA 404-2
Issued 12/06
Random Beads
The random-length bead mode provides a way to mix products of differing
length on the production line during the same production run. For example,
when alternating between short and long products on the production line,
the pattern controller automatically produces continuous beads that fit each
product.
The pattern controller automatically determines the length of each product
as it passes the trigger and then sizes the beads to fit the product. Although
each bead is continuous, a bead margin can be specified at each end of the
product where adhesive will not be applied.
NOTE: When this mode is active, masking of the trigger has no effect (also
refer to Page 31).
5742045A
1
2
AB
Fig. 8 Random-Length Bead Pattern (A: Start Gap/B: Stop gap)
LA 404-2 Pattern Control System
43
P/N 7119995A
2006 Nordson Corporation
LA 404-2
Issued 12/06
Random Bead
Start Gap 0 mm
Stop Gap 0 mm
O676
1. To set Start Gap
a. Press the or button for the cursor to appear beside the numeric
value.
b. Press the or button to set the desired value from 0 - 9999 mm.
2. To set Stop Gap
a. Press the or button for the cursor to appear beside the numeric
value.
b. Press the or button to set the desired value from 0 - 9999 mm.
LA 404-2 Pattern Control System
44
P/N 7119995A
2006 Nordson Corporation
LA 404-2
Issued 12/06
Dot Beads
When this bead type is enabled, the normal bead length is broken into dots.
The size of each dot is programmed in 0.1 ms increments with a maximum
value of 50.0 ms. The spacing between the dots (pitch) is programmed in
millimeters from 2 - 9999 mm.
Finally, the position of the dot on the product is defined. Four dot series can
be programmed for the product.
Once the Dot bead is selected, all the beads for that channel will be in dot
mode. In this mode the start position of the dot pattern will be speed
compensated but the size of the dot is not.
NOTE: Interval (also known as pitch) is the distance from the start of one
bead to the start of the next bead
.
NOTE: If the production machine speed is above the maximum dot speed
(Max Dot), a normal bead is applied (also refer to Page 15).
NOTE: When this mode is active, masking of the trigger has no effect (also
refer to Page 31).
6640040A
178 mm (7.0 in.) Time
10 ms
5 ms
2 ms
Pitch = 25 mm (1.0 in.)
Dur1
Fig. 9 Effect on Dot Size of Decreasing Gun−on Time from 10 ms ( top) to 2 ms (bottom)