Infinity EX Rail System Module.pdf - 第5页
INFINITY EX RAIL SY STEM MOD ULE MECHANICAL DETAIL Chapter Issue 2 J an 04 Technical Reference Manual 15.5 Board Snugger Assembly The board snugger assembly is an alternati v e option to the standard board clamp arrangem…
INFINITY
EX
RAIL SYSTEM MODULE
MECHANICAL DETAIL
15.4 Technical Reference Manual Chapter Issue 2 Jan 04
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 15-2 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
INFINITY
EX
RAIL SYSTEM MODULE
MECHANICAL DETAIL
Chapter Issue 2 Jan 04 Technical Reference Manual 15.5
Board Snugger
Assembly
The board snugger assembly is an alternative option to the standard board clamp
arrangement. This feature is utilized when there is a requirement to print close
to the board edge.
The adjustable snugger plate, rear rail guide and fixed snugger plates are
interchangeable with similar units to facilitate differences in board thickness.
This system caters for 0.8mm, 1.0mm and 1.6mm board thickness.
To clamp the board in position for the printing process, the board is gripped
between the fixed and adjustable snugger plates by action of the pneumatically
operated piston (figure below refers). Pneumatic operation utilizes the existing
board clamp circuit, (via a 24v switched solenoid 16SOL10 from the machine
controller).
On completion of the print stroke the pneumatic solenoid is de-activated allow-
ing the actuator pistons (sprung loaded), to retract the adjustable snugger plate
away from the board.
Figure 15-3 Board Snugger Clamping Arrangement
Transport Belts
End RailMid Rail
Board
Fixed Rail
Moving Rail
I.O
Adjustable Snugger Plate
Fixed Snugger Plate
Plan View of Rail System (Showing Board Clamped)
Rear Rail Guide
Board Clamping Action
Pneumatic Piston Extended
Board
Moving Rail
Movement of Adjustable
Snugger Plate
Movement
of Board
Rear Rail Guide
(Cutaway View)
Adjustable Snugger Plate Board Gripped by Snugger Plate
INFINITY
EX
RAIL SYSTEM MODULE
MECHANICAL DETAIL
15.6 Technical Reference Manual Chapter Issue 2 Jan 04
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 15-4 Side View of Foil-less Clamp Operation
Adjustment Grub Screw
Rail
Foil-less ClampBoard
Vacuum Box