03217917-01-01E By DEK Technical Reference Manual Vol 1_enPDFA - 第152页
11 SQUEEGEE MODULE 11.1 OVERVIEW 152 TECHNICAL REFERENCE MANUAL Vol 1 E By DEK 04/2019 1 2 3 4 5 6 Squeegee Sensor Locations - View on Rear of Squeegee Printhead Mechanism 1 Strain Gauge Bridge (inside Spring Beam Assemb…
11 SQUEEGEE MODULE
11.1 OVERVIEW
TECHNICAL REFERENCE MANUAL Vol 1 E By DEK 04/2019 151
11
SQUEEGEE MODULE
11.1 OVERVIEW
1 2
7 8
6
5
4
3
1 Squeegee Printhead Mechanism 5 Squeegee Drip Tray
2 Rear Squeegee Stepper Motor 6 Rear Squeegee
3 Front Squeegee 7 Print Carriage
4 Squeegee Drip Tray Mechanism 8 Front Squeegee Stepper Motor
The squeegee mechanism is driven backwards and forwards across the stencil by the print car-
riage. The squeegee printhead mechanism incorporates two stepper motors to drive the two
squeegees independently down onto the stencil when a print stroke is required. During the rear-
ward stroke, the front squeegee is in contact with the stencil performing a rear print stroke. During
the forward stroke, the rear squeegee is in contact with the stencil performing a forward print
stroke.
The pressure being applied during the print stroke is measured by a strain gauge bridge (located in
the spring beam assembly of the squeegee mechanism) and if necessary, a correction to the pres-
sure is made by the software.
11 SQUEEGEE MODULE
11.1 OVERVIEW
152 TECHNICAL REFERENCE MANUAL Vol 1 E By DEK 04/2019
1
2
3
4
5
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Squeegee Sensor Locations - View on Rear of Squeegee Printhead Mechanism
1 Strain Gauge Bridge
(inside Spring Beam Assembly)
4 Rear Squeegee Mount
2 Front Squeegee Home Sensor 5 Rear Squeegee Home Sensor
3 Front Squeegee Mount 6 Spring Beam Assembly
(rear plate shown transparent)
11 SQUEEGEE MODULE
11.1 OVERVIEW
TECHNICAL REFERENCE MANUAL Vol 1 E By DEK 04/2019 153
11.1.1 Paste Deflectors
Paste deflectors may be used to keep paste and low density print mediums in front of the squee-
gees.
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2
4
3
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2
1
1 Paste Deflectors 3 Self Adjusting Paste Deflectors
(SAPD)
2 Securing Screws and Washers 4 Securing Screws
NOTE
Self Adjusting Paste Deflectors (SAPD) are only available for 60 degree squeegees.