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DEK印刷机手册SqueegeeModule
4 m) j* z5 o; \6 Y' n4 ?MODULE OVERVIEW8 f; S& l Q- K1 v7 f
Purpose ( m5 |) Y7 g1 a$ P) x- w. b
The squeegee module allows the setting and monitoring of squeegee height and pressure during the print stroke./ _0 g0 r* d8 v0 E) k- g5 Z
The positioning of the squeegee module across the print stroke (from front to back).
" k4 b$ `+ D" p6 HElements
' i+ I' [$ Y! ~, H+ M0 M. aThe major components of the squeegee module are as follows:
0 p: O+ {. X& o? Squeegee Housing F5 F+ q. y: B
? Squeegees3 O( _+ }% |( Z% y
? Squeegee Pressure Amplifier+ E8 n U/ _8 p f* c
? Squeegee Drive Stepper Motors2 T1 ]. @7 o$ U s& u
? Pre-load Set Screw
0 y7 D8 M7 `; f? Load Cell. M3 w2 q5 o ]6 D6 E( b* x) Q% r
? Main Compression Spring. U5 Y: f" [$ s/ ]
? Squeegee Drive Mechanism
" ~( u6 k8 ~* r( ?' n$ `9 {% p$ a, t ?? Front And Rear Squeegee Mounts7 f8 R, \! h6 `1 l. d8 d! G) d* i% U
? Home Sensor Hall Effect Switches (2 positions)5 B8 w1 {- ]- ~
Operation The squeegee drive motors move the front and rear squeegee mounts to the required positions.9 x: R4 d/ T" m
The printhead pressure system is the mechanism which drives the two squeegees independently down onto the screen and applies the pressure necessary to print.
3 U7 h6 ]% k* ]% XThe 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.
$ J) n P8 ]# O( H' V4 X$ \3 F6 VThe pre-load set screw and main compression spring are used to calibrate the load cell/squeegee pressure.2 B: \. K; ^6 a' `
The home sensors, sited in the printhead mechanism, detect when the front and rear squeegee mounts are at the top of their travel.8 ` V% E: u6 ^3 r
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发表于 2020-5-12 10:26
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