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DEK印刷机手册SqueegeeModule
$ t6 i7 [. R; DMODULE OVERVIEW
+ p, b1 `% b+ oPurpose
" `# m( t& O: Q8 Z- ]; s8 V% B. MThe squeegee module allows the setting and monitoring of squeegee height and pressure during the print stroke.5 h. A+ a+ P/ {, \ h( ~
The positioning of the squeegee module across the print stroke (from front to back).' I. p$ x, z8 a3 ^% b4 {1 D% ~" y
Elements
$ Q' x1 G* z# I$ o) H6 J+ ~The major components of the squeegee module are as follows:0 n5 [5 v& c" J0 R$ k1 B
? Squeegee Housing
% I. k$ V- m8 O' c? Squeegees! ?0 r& Y7 R9 v* E: o
? Squeegee Pressure Amplifier5 J. S5 a5 ^8 m$ D
? Squeegee Drive Stepper Motors
; b q& L3 I4 c l9 Y? Pre-load Set Screw
/ k, p3 s$ @" _% W( k? Load Cell
3 x: \+ o* a) a& @% L! B e? Main Compression Spring9 x( E6 f6 s' g: t% F# ~4 _6 C1 P
? Squeegee Drive Mechanism3 l. e: B- x0 K) b5 H* `; G
? Front And Rear Squeegee Mounts5 g( }0 U1 k1 M$ ]% U" @' V
? Home Sensor Hall Effect Switches (2 positions)2 Y& h2 W8 o! z0 G! ~5 _7 u! K
Operation The squeegee drive motors move the front and rear squeegee mounts to the required positions. @6 G9 ^4 D! a( ]' k( ]
The printhead pressure system is the mechanism which drives the two squeegees independently down onto the screen and applies the pressure necessary to print.0 G1 Z* V3 ?7 T4 {, A
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.0 f% ~+ X& _, ~- L; l) E/ G- E$ G
The pre-load set screw and main compression spring are used to calibrate the load cell/squeegee pressure.( V0 `2 Y0 U' D2 A' L1 d: _! i
The 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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发表于 2020-5-12 10:26
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