dip coating coater optical smoke density electronics development

Coater 5 H

The H version of Coater 5 coating device is designed for long samples coating. Total carriage displacement is 460 mm and a vessel with coating liquid can be fitted below the coating box to the flange at the coating box bottom. It makes the device ideal for coating samples as long as 460mm, for example segments of optical fibers. The coating box is designed to be mounted on the wall so the space below the box is free. Of course, the device may be installed as bench-top standalone device as well. In standard version, front and side covers are made of acrylic and are mounted to the frame by bayonet locks. See table of options for more possibilities. The coating box is not hermetically sealed, but is tight enough to be filled with nitrogen or another inert gas during dip cycle. Gas inlet and outlet are located on the rear side of the device. Six M4 threads in the back cover and 16 M4 threads in the ceiling of the coating box are available to attach other equipment inside the box e.g. uv curing lamp, heat curing furnace.

Dip coating mechanism

Linear positioning mechanism consists of one axis linear guide with a carriage driven by precision screw. Linear guide uses two stainless steel rods and a carriage with sealed linear ball bearings. The carriage is driven by lead screw with an anti-backlash nut. It provides excellent smoothness and precision of motion. The mechanism is powered by DC servo motor with incremental encoder. Servo motor driver uses encoder position feedback to achieve precise motor speed as well as travel distance metering. A sample holder is attached to the carriage typically by two screws and can be easily removed. The carriage has a set of threaded holes to accommodate various sample holders. Standard holder is designed for holding up to ten microscopic glass slides. Holder for different shapes of samples could be provided on request. A special flange mounted at the bottom cover of coating box enables attaching a vessel with coating liquid below the coating box.

Control system

All experiment parameter are user adjustable using buttons and knobs on the control panel. These parameters include downwards carriage speed, upwards carriage speed, upper point delay, bottom point delay, upper point position, bottom point position, manual motion carriage speed, park position and experiment mode. There are three experiment modes available. Simple mode executes whole dipping cycle on a single button press. Automatic mode performs the whole dip coating process cycle automatically with preset parameters without any user intervention. Manual mode allows performing dipping cycle step by step as required by user. The device can be also controlled from a personal computer connected via USB or serial port RS232.

Documents for download

Data sheet (CZ): coater5_h_specifications_cz.pdf
Data sheet (EN): coater5_h_specifications_en.pdf
User's guide - dip coating (EN): c5std_manual_en.pdf
User's guide - dip coating (CZ): c5std_manual_cz.pdf