Infinity EX High Throughput Conveyor Module - 第20页

INFINITY EX HIGH THROUG HPUT CONVEY OR MODULE SEQUEN CES 16.2 0 Technical Reference Manual C hapter Issue 1 Aug 02 After the p rint c ycle, the Board 1 is the n transported to the do wnline auxi liary con v e yor . When …

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INFINITY
EX
HIGH THROUGHPUT CONVEYOR MODULE
SEQUENCES
Chapter Issue 1 Aug 02 Technical Reference Manual 16.19
machine, into the machine, where the board is positioned, clamped and printed.
After printing, the board is transferred to the downline machine. A signal to the
upline machine, to dispense another board, is sent when the leading edge of the
board switches the ‘board present’ sensor on the downline machine. If the
downline machine has a board at the sensor, the conveyor board stop activates
to prevent the board leaving the print station. In single stage normal mode, only
one board can be in the machine at any one time.
Single Stage Fast In single stage fast mode the signal to the upline machine, to dispense another
board, is sent when the trailing edge of the printed board passes the board at right
sensor on the print station. In the event of the downline machine being busy, the
board is stopped at the end of the print station. In single stage fast mode, two
boards can be in the machine at the same time (one entering the machine on the
upline auxiliary conveyor as the printed board is exiting on the downline
auxiliary conveyor).
NOTE
If the downline transfer time is greater than the machine cycle time (displayed
on the machine MMI), single stage normal mode must be selected to prevent two
boards on the downline conveyor at the same time.
Three Stage Normal In three stage normal mode the upline auxiliary conveyor transports Board 1 to
the print station conveyor where the board is processed. With Board 1 in print
position, Board 2 is dispensed from the upline machine. When Board 2 arrives
at the sensor, at the end of the upline auxiliary conveyor, the transport belts stop.
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WARNING SHARP EDGE
PATENT No 5157438
WARNING SHARP EDGE
PATENT No 5157438
Print StationConveyor
Board Stop
Downline Conveyor
Board Stop
Upline Conveyor
Board Stop
Plan View of Board Positioning with Downline Machine Delay (Three Stage Mode)
Board Direction from Left to Right
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INFINITY
EX
HIGH THROUGHPUT CONVEYOR MODULE
SEQUENCES
16.20 Technical Reference Manual Chapter Issue 1 Aug 02
After the print cycle, the Board 1 is then transported to the downline auxiliary
conveyor. When the leading edge of the board activates the sensor, at the end of
the downline auxiliary conveyor, a signal is sent allowing Board 2 to enter the
print station and Board 3 to enter on the upline auxiliary conveyor.
Providing the downline machine is ready, the first board can leave the downline
auxiliary conveyor and the cycle be repeated. If the downline machine is busy,
the second board is printed and transported to the end of the print station
conveyor where it is held by the conveyor board stop.
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WARNING SHARP EDGE
PATENT No 5157438
WARNING SHARP EDGE
PATENT No 5157438
Print StationConveyor
Board Stop
Downline Conveyor
Board Stop
Upline Conveyor
Board Stop
Plan View of Board Positioning with Downline Machine Delay (Three Stage Mode)
Board Direction from Left to Right
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Board 3
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WARNING SHARP EDGE
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WARNING SHARP EDGE
PATENT No 5157438
Print Station Conveyor
Board Stop
Downline Conveyor
Board Stop
Upline Conveyor
Board Stop
Plan View of Board Positioning with Downline Machine Delay (Three Stage Mode)
Board Direction from Left to Right
Board 3
Board 2
Board 1
INFINITY
EX
HIGH THROUGHPUT CONVEYOR MODULE
SEQUENCES
Chapter Issue 1 Aug 02 Technical Reference Manual 16.21
Three Stage Fast In three stage fast mode, the operation is the same as three stage normal mode
with one exception. The second board is transported on to the print station when
the trailing edge of the first board passes the board at right opto situated at the
end of the print station conveyor. This is achieved by the downline conveyor
returning a ‘Busy’ signal back to the centre as soon as it detects that its ‘Board
Available’ input has gone ‘low’, which completes a downline transfer as far as
the print station is concerned.
Figure 16-15 Normal/Fast Mode Timing Chart
Board
Available I/P
Downline
Auxiliary
Sensor I/P
Downline
Available O/P
Belts Running
Normal Mode
Board Available Upline Board Leaves
Upline Machine
Belts Running
Fast Mode
Board Available Upline Board Leaves
Upline Machine
Negative Edge
Frees Upline
Machine
Negative Edge
Frees Upline
Machine
Board Activates
Downline Auxiliary
Sensor
Board Activates
Downline Auxiliary
Sensor