Vista Rail System Module.pdf - 第4页
5$,/ 6< 67(0 02' 8/( 0(&+$1 ,&$/'(7$ ,/ 12.4 Technical Reference Manual Chapter Issue 1 Sep 02 MECHANICAL DET AIL Belt Drive The board is transpo rted on ‘ O ’ ring t ype belti ng which is dri ven…
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Chapter Issue 1 Sep 02 Technical Reference Manual 12.3
MODULE SCHEMATIC
Breakout D
DPL1 DSK5
Machine PC
NextMove
ISA 10
Processor
ISA 3
ISA
BUS
CAN BUS
MUX Axis Home
Machine Controller
Front Belt
Drive
(8M03)
24V dc Motors
Rear Belt
Drive
(8M04)
8M2
Moving Rail
Stepper
Home
Motor 2B-
Motor 2A-
Motor 2B+
Motor 2A+
Stepper Direction
Breakout C
M
M
Board Clamp/
Snugger Solenoid
(16SOL10)
Source 3
Totem 0 (Fwd)
Totem 1 (Rev)
Totem 2 (Fwd)
Totem 3 (Rev)
CSK7
CSK2
Manual Operation
Board at Right
Sensor
(8SE7)
Board at Left
Sensor
(8SE8)
Rail Lift
Right
(8SE4)
Rail Lift
Left
(8SE5)
DIG IN 16
DIG IN 17
Breakout B
BPL1 BSK3
Breakout A
APL1 ASK4
DIGIN3
DIG IN 4
Stepper
Multiplexer
MultiMove
(X12)
MultiMove
(X13)
Moving Rail
Home
(8SE6)
Dual Stepper
X4
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12.4 Technical Reference Manual Chapter Issue 1 Sep 02
MECHANICAL DETAIL
Belt Drive The board is transported on ‘O’ ring type belting which is driven by two moving
coil motors, one on each rail.
The speed of these motors is controlled by a MultiMove card in the machine
controller which can be adjusted via the machine diagnostics (Belt Speed
Calibration page).
NOTE
For belt speed calibration refer to the Calibrations Section of this chapter.
Board Clamps A board clamping arrangement is utilized to minimize board distortion during
print process. A pneumatically operated piston, (via a 24v switched solenoid
16SOL10 from the machine controller), lowers the board clamp and foil trapping
the board on the transport belts. On completion of the print stroke the board is
released by activation of the pneumatic solenoid.
Figure 12-2 Board Clamping Arrangement
Transport Belts
Pneumatic Piston Driven Downwards
WARNING-SHARP EDGE
PATENT No.5157438
End Rail End RailMid Rail Mid RailBoard Clamp
Board
Board Trapped Between Foil and Transport Belt
Plan View of Rail System
Transport Belt
Rail
Piston
Metal Foil
Board Clamp
Board
Board Free on Transport Belt
Board Clamp and Foil Lowered
WARNING-SHARP EDGE
PATENT No.5157438
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Chapter Issue 1 Sep 02 Technical Reference Manual 12.5
Foil-less Clamps This option is used on thin boards which are populated with components too
close to the edge of the board for traditional board clamps. The board is
secured during the print stroke by the use of vacuum. The clamps are
perpendicular to the board maintaining a good gasket between the board and
the stencil. The clamps are adjusted in height for different thicknesses of board
by two grub screws.
Figure 12-3 Side View of Foil-less Clamp Operation
Adjustment Grub Screw
Rail
Foil-less Clamp
Board
Vacuum Box