DEK印刷机手册SqueegeeModule

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DEK印刷机手册SqueegeeModule

. ~( _" \( X) }MODULE OVERVIEW
Purpose
; i/ u5 f! H  QThe squeegee module allows the setting and monitoring of squeegee height and pressure during the print stroke.
The positioning of the squeegee module across the print stroke (from front to back).
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The major components of the squeegee module are as follows:
+ [8 _" I! Z% C' l/ Q6 c? Squeegee Housing
: D% A4 E. g" i8 J? Squeegees
? Squeegee Pressure Amplifier
. R6 M9 n) t2 y) d? Squeegee Drive Stepper Motors
" s. d/ }8 H5 M6 b  c$ a? Pre-load Set Screw
? Load Cell
? Main Compression Spring
7 x/ q+ P6 x( T- |. |3 U/ t? Squeegee Drive Mechanism
? Front And Rear Squeegee Mounts
? Home Sensor Hall Effect Switches (2 positions)
Operation The squeegee drive motors move the front and rear squeegee mounts to the required positions.
The printhead pressure system is the mechanism which drives the two squeegees independently down onto the screen and applies the pressure necessary to print.
The pressure being applied during print is monitored by the pressure amplifier,and if necessary, corrections to pressure is made as part of a closed loop process. The load cell and pressure amplifier give a change in output voltage proportional to the pressure applied by the squeegees.
The pre-load set screw and main compression spring are used to calibrate the load cell/squeegee pressure.
  H% G) I* d$ t" ^6 P+ VThe home sensors, sited in the printhead mechanism, detect when the front and rear squeegee mounts are at the top of their travel.
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