|
Type:
Description: |
HET
120
Multi- level dryer for 120 pcbs, horizontal throughfeed |
Function:
Number of heating circuits:
Loading capacity:
Typical capacity:
Min. time of 1 cycle:
Temperature approx.:
Connection load:
Exhaust air: |
Drying
pcbs after coating
2
120 pcbs (1 pcb per rack)
120 pcbs per hour
30 secs.
90-100 °C
80 kW
Max. 3,000 m³/h
|
|
|
|
Size
of pcbs
Dimensions:
Thickness: |
min.
250 x 350 mm
0.4 mm |
max.
610 x
610 mm
5.0 mm |
Dryer:
Dimensions: |
Length*)
3 m |
Height
3.8 m |
Width
2 m |
| In-
and outfeed: |
1500
mm |
Total
length:
Panelling:
Frame: |
4.5
m
Steel sheet, powder- coated
RAL 7035, light- grey
Tubular
steel, IC 198 blue painted |
A) Function:
freshly coated pcbs
are dried in a quick and homogeneous way.
One pcb lies on one
rack. The rack raises upwards in 30 sec. cycles, is pushed to
the outfeed side and then lowers downwards again.
Infeed: The
pcbs enter the dryer on transport belts. The rack raises above the
transport (belt) level and takes one pcb. The transport belts are
folded down. They return as soon as the next pcb will enter.
Outfeed:
The rack drives below the transport (belt) level. The dried pcb is
left on the belts and can leave the dryer. The outfeed belts are
folded down so far, to allow the emptied rack to be pushed back to
the infeed.They return as soon as the next pcbs have to be fed out.
The pcb’s pass
one evaporation zone, three heating circuits and one cooling zone.
The temperature of each heating circuit can be controlled separately.
The typical drying temperature of 90-100°C has been achieved after
the first heating circuit. It is hold in the second and third
circuit. Before leaving the dryer, pcb’s are cooled down to approx.
30°C.
B) Temperature
profile:
The profile
depends fundamentally on the ink.
The following values, based on experiences, are typical:
|
Evaporation:
Heat up:
Hold on:
Cool down:
________________ |
15
min.
5 min.
25 min.
15 min.
__________
|
|
Total
time: |
60
min.
|
C) Advantages:
• No
subject to the pcb-size
• Reproducible
temperature distribution on the panel
• Careful
transport
• Control
of temperature for each heating circuit
• No
buckling or distortions of pcbs
• Connection
of lines possible
• Visualization
of process
• Room
saving because of compact design
D) Options/
Alternatives:
Vertical dryer
VDH 144-352
IR-Dryer
Grip-dryer for very thin pcbs
| Type |
Capacity
(pcbs /h) |
Total
length |
Heating
areas |
Continuous
load |
Pcbs
per carrier |
Pdf-
files for download |
| HET
120 |
120 |
4.5
m |
2 |
80
kW |
1 |
see
below |
| HET
240 |
240 |
7.1
m |
3 |
90
kW |
2 |
het240 |
| HET
360 |
360 |
9.0
m |
3 |
100
kW |
3 |
het360 |
• Download
this page as zipped pdf- file
Get infos on
our products:
Coating- LG 250, VCR100
Drying- (horizontally) HET 120, IR/16
KW, ABL 30, (vertically) VDH
248, MD4000
Handling- Horizontal Loader HS, Vertical
Loader VS, Transport Modules
XT/US1/XTP, TVA Separators, TA
Automatic Separators, SV100 Plane Raze Device |
