SL940-Install-Ops-Maintenance-7210918_B.pdf - 第23页

Introduction 1-9 1.11.4 SC - 300 Swirl C oat A p plicator The SC -300 Swirl Coat applicator offe rs three modes o f operation - bead, monofil ament and swirl. I de al for conformal coating applications, the SC - 300 hand…

1-8 Introduction

1.11 Conformal Coating Applicators

The SL-940E/SL-941E can be configured with any of the coating applicators described in Table 1-1.

Table 1-1 SL-940E/SL-941E Conformal Coating Applicators

Coating Applicator Rotation Tilt

SC-104HS High Speed Film Coater

0-90°

SC-105HS High Speed Film Coater

0-360° 0-30°

SC-204HS High Speed Non-Circulating Film Coater

0-90°

SC-205HS High Speed Non-Circulating Film Coater

0-360° 0-30°

SC-300 Swirl Coat Applicator None 4 position tilt

SC-400 Precise Coat Conformal Coating Jet None

The SC-10X Series Film Coaters are circulating applicators. The SC-20X Series applicators are

noncirculating. Noncirculating fluid applicators are used to apply materials that do not require heating and

therefore, are not circulated.

1.11.1 SC-104HS/SC-105HS Circulating Film Coater

The SC-104HS (4-axis) and SC-105HS (5-axis) apply coatings in a film rather than in an atomized spray

produced by conventional airless spray guns. The SC-104HS consists of an air actuated assembly which

rotates the nozzle from 0-90 degrees. The SC-105HS consists of an air actuated assembly which rotates

the nozzle in 90-degree increments. In addition, the SC-105HS has an air-activated tilt assembly, which

allows the nozzle to be tilted from vertical to 30 degrees from vertical.

1.11.2 SC-104/105VCS Viscosity Control System

The Viscosity Control System maintains consistent temperature of conformal coating fluids. The system

includes a coating applicator and a heated circulating fluid circuit to eliminate viscosity changes in

temperature-responsive materials. Close-range temperature monitoring keeps the coating process

consistent and stable. By controlling the temperature of the conformal coating fluid circuit, viscosity

fluctuations can be reduced. Additionally, emissions of Volatile Organic Compounds (VOCs) may be

reduced, depending on the fluid properties, by reducing the amount of solvent required to thin the

conformal coating.

1.11.3 SC-204HS/SC-205HS Non-Circulating Film Coater

The SC-204HS (4-axis) and SC-205HS (5-axis) film coaters are used to apply materials that do not

require heating and therefore do not require circulation. The coaters are fitted with a rotating ring

mechanism that rotates the SC-204HS nozzle from 0-90 degrees and the SC-205HS nozzle in 90-degree

increments. In addition, the SC-205HS has an air-activated tilt assembly, which allows the nozzle to be

titled from vertical to 30 degrees from vertical.

Introduction 1-9

1.11.4 SC-300 Swirl Coat Applicator

The SC-300 Swirl Coat applicator offers three modes of operation - bead, monofilament and swirl. Ideal

for conformal coating applications, the SC-300 handles a wide range of materials, varying in viscosity

from 30 to 3500 mPa-sec (30 to 3500 centipoise). The SC-300 is designed for use with solvent-less

coatings, supporting environmentally responsible practices. A four-position tilt option is available to

allow coating access to vertical sides of components.

1.11.5 SC-400 PreciseCoat Conformal Coating Jet

The SC-400 PreciseCoat Conformal Coating Jet is ideal for applying conformal coating materials to

highly selective areas. This solution is designed for coating small substrates or substrates with high

component density, and when there are tight tolerances between coated and uncoated areas. The

SC-400 jet reaches locations not accessible by other applicators, using a needle design with jetting action

and fast pulse-width modulated control.

1-10 Introduction

1.12 System Features

The figures in this section show views and features of the coating system. Callouts locate major

components, options, and switches. The numbers associated with the descriptions correspond to the

callout numbers in the illustration. Detailed operating instructions for some of these features are treated in

other sections of this manual.

1.12.1 Front View Features

Below are functional descriptions of SL-940E/SL-941E components shown in Figure 1-3.

 NOTE The terms Robot and Dispensing Head are synonymous and are used interchangeably

throughout this manual.

Figure 1-3A SL-940E Front View