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MACHINE OVERVIEW MODULE OVERVIEWS 4.10 Technical Reference Manu al Chapter Issue 4 Nov 09 Underscreen Cleaner The underscreen cleaner module au tomati cally cleans the undersid e of the screen so reducing the build up of…
MACHINE OVERVIEW
MODULE OVERVIEWS
Chapter Issue 4 Nov 09 Technical Reference Manual 4.9
Camera System
Module
The function of the camera system is to supply a visual indication of screen to
board alignment and board/screen inspection data to the machine PC enclo-
sure. The captured information supplied to the PC enclosure enables the
processor to:
• Align the screen to the product board
• Provide visual information for the user on the MMI monitor
The camera assembly traverses horizontally in the X and Y axis and is driven
by either:
• Rotary Servo Motors
• Linear Servo Motors
The camera carriage is also used to transport the board stop and the under-
screen cleaner.
Figure 4-11 Camera System
Camera System
MACHINE OVERVIEW
MODULE OVERVIEWS
4.10 Technical Reference Manual Chapter Issue 4 Nov 09
Underscreen
Cleaner
The underscreen cleaner module automatically cleans the underside of the
screen so reducing the build up of paste.The underscreen cleaner is driven
across the underside of the screen by the camera carriage.
There are three types of underscreen cleaner available:
• Blue Underscreen Cleaner
• Cyclone Underscreen Cleaner
• Vortex Underscreen Cleaner
The underscreen cleaner module provides the facility to store solvent for wet
cleaning cycles. Solvent is stored in one of the following:
• External Solvent Tank
• Solvent Bottle (metal covers machine only)
The external solvent tank may be mounted on either side or the rear of the
machine and is secured to the machine frame.
The vacuum filtration unit removes excess paste from the screen and solvent/
print material fumes. There are three types of vacuum filtration units:
• VF35i Vacuum Filtration Unit
• VF25 Vacuum Filtration Unit
• VF10 Venturi Vacuum Filtration Unit
Figure 4-12 Underscreen Cleaner Components
Underscreen Cleaner
External Solvent
Tank
Solvent Bottle
VF35i Vacuum Filtration Unit
VF25 Vacuum Filtration Unit
VF10 Venturi
Vacuum Filtration Unit
MACHINE OVERVIEW
MODULE OVERVIEWS
Chapter Issue 4 Nov 09 Technical Reference Manual 4.11
Adjustable
Screen Mount
(ASM)
The ASM is the receptacle for the screen during printing operations. The ASM
is fully adjustable to accommodate the most popular of screen sizes. The print
screen is clamped into place by the ASM during the print cycle. The ASM is a
machine option replacing the C Chase.
There are two methods used for achieving correct position of the screen within
the chase assembly:
• Screen Depth Adjuster
• Screen Change Mechanism
The screen depth adjuster is set (Distance to Image) by the operator prior to
loading the screen. The screen is loaded into the chase until it reaches the stop
at the end of the screen depth adjuster.
The screen change mechanism places the screen in the correct position
calculated by the software.
Screen
Alignment
Module
The screen alignment module enables adjustment of the ASM to achieve
optimum screen to board alignment prior to the print stroke. Actuators move
the print screen in the X, Y and theta planes to nullify the misalignment error
signal from the vision system.
Figure 4-13 Adjustable Screen Mount (ASM) - Screen Alignment
Screen Alignment
(actuators)
Screen Alignment
(chase clamp)
Screen Alignment
(chase clamp)
Adjustable Screen Mount
(ASM)
Screen Depth Adjuster
Screen Change Mechanism