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DEK印刷机手册SqueegeeModule u" Y6 V+ Z* X6 t& } a4 x) o: L5 s
MODULE OVERVIEW' X! g' u7 O6 x9 j
Purpose u) U7 |: B4 j: e1 z! b, x. B# }
The squeegee module allows the setting and monitoring of squeegee height and pressure during the print stroke. r" Z( p1 Z$ _( h
The positioning of the squeegee module across the print stroke (from front to back).
' Y* D. Q, G' o0 E% ~" j6 MElements
, P1 ?! T1 A+ {* KThe major components of the squeegee module are as follows:2 T( c2 r+ Q% T2 k3 ~
? Squeegee Housing* C; A2 s# A* {, d" N; l) a( v8 \
? Squeegees
& ^( e2 |2 X# {. \7 y? Squeegee Pressure Amplifier
+ i, C' k7 t0 }' y, A? Squeegee Drive Stepper Motors
8 _/ ]$ S1 v+ P2 K' J? Pre-load Set Screw
; w/ a# R$ Q; N0 W' d9 U4 s( O? Load Cell% p ]& V: V2 \$ g2 y
? Main Compression Spring
7 F6 A f, p7 X) ?4 q? Squeegee Drive Mechanism9 u9 c+ i$ I4 E0 h, T, ^
? Front And Rear Squeegee Mounts) J: t; D; S: I1 c$ j; ?$ Z6 h
? Home Sensor Hall Effect Switches (2 positions)$ f3 X) S. l$ \/ r M0 N! l4 p
Operation The squeegee drive motors move the front and rear squeegee mounts to the required positions.
: U1 J. `+ \6 LThe printhead pressure system is the mechanism which drives the two squeegees independently down onto the screen and applies the pressure necessary to print.* b+ O6 K3 z2 r5 G
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.
( h) ?: F7 [5 g) \, H1 L1 SThe pre-load set screw and main compression spring are used to calibrate the load cell/squeegee pressure.' x, d, p3 o& I# R
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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