AUTOSPRAY 481

Description

The AUTOSPRAY 481 (type APL 1.2) is intended for the uniform and reproducible application of coating materials using an air atomizing spray gun with a flow cup. It is advisable to set it up in front of a corresponding vacuum wall or similar, the water tub should be at a max. height of 750 mm from the floor. The exact dimensions of the spray stand and the water tub must be specified when ordering. This machine is user-friendly, low-maintenance and mobile – thanks to its compact design and its double-stop rollers (it can be transported through a door of 800 mm width).

Design and Function

The AUTOSPRAY 481, Type APL 1.2, consists of a self-contained stainless steel cabinet assembly which is easy to clean and also provides excellent resistance to high humidity.

Because both the switch gear cabinet containing the pneumatic/electric control elements and electric wiring and the motor compartment have a pressurized enclosure, the Model 481 spray applicator for test panels is explosion-proof.

The explosion protection is certified by TÜV Rheinland (German technical surveillance association).

The AUTOSPRAY APL 1.2 is therefore suitable for use in potentially explosive atmospheres. If required, further components can be easily integrated into the pressurized switch-cabinet, without adversely affecting the explosion-proof properties of the AUTOSPRAY 481.

Since all connections are of the plug-in type, transportation for maintenance purposes is simplified and the spray booth can remain in operation.

The control unit not only allows the use of fixed-programmed spraying parameters such as step sizes, horizontal and vertical stroke speeds, number of spraying strokes and exhaust air times; by altering the settings it is possible to adapt to practically all conceivable requirements of coating technology (e.g. applying a paint wedge). As a result, reproducible coating structures can be generated at any time.

The assymetrical layout of the operating panel ensures easy access to the test pieces which have been or are to be been coated, even in smaller spray stands.

The AUTOSPRAY 481 is pre-fitted to enable the use of one or two automatic flow cup spray guns which can be inpidually pre-selected. Because there is no screen involved, a uniform air flow in the stand can circulate around the sprayers. Airless guns can also be integrated as an option. The gun holder is designed in such a way that the height and angle of the sprayer position can be readjusted. The spray gun operates at an angle of 90° to the test panel. The machine can be supplied complete with spray gun on request.

The adjustable test panel holder makes it possible to vary the distance between the spray gun and the testing surface.

Changing the test panel holders is a simple matter – and the use of either magnetic fixing devices (secure, rotatable, with flow edge) or suction cups is possible.

Special Features

The stroke mechanism is driven by integrated 3-phase a.c. motors by way of frequency converter. This ensures:

• a uniform speed during the entire spraying stroke
• avoidance of the pulsation to be expected from, e.g. a pneumatic stroke mechanism
• smooth starting and stopping ramp due to adjustable frequency converter. As a result, the
• components are subjected to a minimum of wear
• minimum noise level
• high production rate with minimum time and effort for maintenance
• speed of spraying frame adjustable 0.2 up to 1.0 m
• vertical and horizontal spraying range adjustment
  
  

Supply of compressed air for control air and spray gun air:

• Large-dimension air supply connection (3/4") for the spray gun with additional upstream controller which filters out fluctuations in the main feed line. The result is a uniform supply of compressed air and an optimal specific output.
• Short distances: The air hoses inside the machine are as short as possible to avoid pressure losses.
• Large-diameter supply hoses (8 mm ID) to the spray guns.
  
  

Additional structural advantages:

• The AUTOSPRAY 481 is equipped with 4 braked castors. It is therefore fully mobile and can fit through standard doors with a width of 800 mm.
• It can be set up opposite a spray booth with extraction facilities and a water trough of up to 750 mm over-floor height.
• The arm with the test panel mounting is located inside the spray booth ensuring direct extraction of the paint mist and avoiding mist development in the laboratory.
• Complete housing in stainless steel.
• Small build (easy operation).
• Almost infinitely variable adjustment of the gun speed by means of a button potentiometer.
  
  

Coating methods:

• Surface application in cycle
• Wedge application
  
  

Preselectable parameters:

• Variable gun speed
• Number of spraying strokes: 1 - 4
• Selection spray guns 1 or 2 (option)
• 4 adjustable grid increments (vertical workpiece down movement)
• Horizontal spraying range
• Spray gun air pressure
• Exhauster times adjustable from 0 - 3600 s
  
  

Scope of delivery

• Test Panel Spraying Applicator AUTOSPRAY 481, APL 1.2 (excl. spray gun)