D-serie level 1 EN.pdf - 第120页

P&P and TWIN Heads TWIN Head Pickup and Place Cycle Pre parations for Component Pickup (Module1) S tuden t Guide Advanced Level 1 SIPLACE D-Series P&P and TWIN Heads EN 05/2007 7-6 7.2.2.1 Component Pickup (Modul…

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P&P and TWIN Heads
TWIN Head Placement Principle TWIN Head Pickup and Place Cycle
Student Guide Advanced Level 1 SIPLACE D-Series
EN 05/2007 P&P and TWIN Heads
7-5
7.2 TWIN Head Pickup and Place Cycle
7.2.1 TWIN Head Placement Principle
During the PCB transport time, the gantry waits at the theoretical fiducial position, to perform board
centering (and inkspot recognition) after PCB clamping. With the " Whispering down the machine"
option, gantry 3 only evaluates 2 fiducials.
The TWIN Head collects one component with module 1 and one component with module 2. These
components are then centered with the IC camera (FC camera) and are placed.
7.2.2 Preparations for Component Pickup (Module1)
Legend
1. Z-motor
2. D motor
PCB position recognition and ink spot
recognition is performed.
The X and Y gantry axes move to the feeder
track or pickup position.
During gantry positioning, the D-axis rotates to
the pickup angle.
Communication with component trolley -
feeder ready - opens the feeder pickup
window.
NOTE:
To achieve greater placement accuracy, the offset between the nozzle and the IC camera is
checked after a defined period, with the help of a fiducial. The fiducial is on a metal plate, which
is fixed between the stationary camera and the machine frame.
P&P and TWIN Heads
TWIN Head Pickup and Place Cycle Preparations for Component Pickup (Module1)
Student Guide Advanced Level 1 SIPLACE D-Series
P&P and TWIN Heads EN 05/2007
7-6
7.2.2.1 Component Pickup (Module 1)
Legend
1. Z-motor
2. Vacuum/air blast generator
3. Force sensor
Z-axis moves downwards with standard mode
(2 N pickup force).
On contact with the component, the force
increases to the programmed value.
When this value is reached, the end signal is
triggered and the vacuum check is activated.
Legend
1. Z-motor
2. Vacuum/air blast generator
The Z-axis moves upwards with standard
travel mode.
Communication with component trolley -
continue feeder cycle - as soon as the Z-axis
position "safety height" is reached.
When the Z-axis up end signal is emitted, the
"component on nozzle" vacuum check is
performed.
The D-axis is rotated to the placement angle
(so that only the component correction angle
needs to be rotated after centering).
Preparation for continued pickup (component
on module 2).
P&P and TWIN Heads
Preparations for Component Pickup (Module 2) TWIN Head Pickup and Place Cycle
Student Guide Advanced Level 1 SIPLACE D-Series
EN 05/2007 P&P and TWIN Heads
7-7
7.2.3 Preparations for Component Pickup (Module 2)
7.2.3.1 Component Pickup (Module 2)
Legend
1. Z-motor
2. D motor
Pick up with module 1 is finished.
The X and Y gantry axes move to the feeder
track or pickup position.
During gantry positioning, the D-axis of
module 2 moves to the pickup angle.
Communication with component trolley -
feeder ready - opens the feeder pickup
window.
Legend
1. Z-motor
2. Vacuum/air blast generator
3. Force sensor
Z-axis moves downwards with standard mode
(2 N pickup force).
On contact with the component, the force
increases to the programmed value.
When this value is reached, the end signal is
triggered and the vacuum check is activated.