Automatic guns positioning, triggering and guns setting improvefinishing quality and reduce powder wasted in the recovery system.
Technicalsolution

Degree of automation
Guns
triggeringGuns
settings

Guns stroke
adjustment

Guns in-out
positioning

Automatic

ManualManualManual

Gap detection

Photo-cell or
light barrierPart height detection

Light barrier

Automatic

ManualAutomatic1)

ManualPart height + widthdetection

Light barriersAutomatic

ManualAutomatic1)

Automatic

Part recognition, usedin combination with oneof the above detection
methods

Code plates /Object numbers

Automatic

Automatic

Automatic1)

Automatic

Reducedoverspray

Powdersavings

Stable, improved
coating quality© GemaSwitzerland
GmbH- Allrightsreserved.
© GemaSwitzerland
GmbH- Allrightsreserved.

Part detection systems: quality and savings•The presence of each object is detected at booth entrance (1) and tracked with the helpof an encoder mounted on the conveyor•

Guns triggering: powder output is on when the object is in front of the gun and is off
when no object is in front of the gun (2)1© GemaSwitzerland
GmbH- Allrightsreserved.
© GemaSwitzerland
GmbH- All
rightsreserved.

Gap detection, no object – no spray2

Partpresence detection

Reduced oversprayand powder waste

Improved
application quality2

•

The presence and height of each object are detected at booth entrance (1) andtracked with the help of an encoder mounted on the conveyor•

Guns triggering (2): powder output is on when the object is in front of the gun and is
off when no object is in front of the gun
1© GemaSwitzerland
GmbH- All
rightsreserved.
© GemaSwitzerland
GmbH- All
rightsreserved.

Part height detection – no object no spray

2

Part presence
and height detection

Reduced oversprayand powder waste

Improved
application quality3•The presence and height of each object are detected at booth entrance (1) and tracked withthe help of an encoder mounted on the conveyor•

Guns triggering (2): powder output is on when the object is in front of the gun and is off
when no object is in front of the gun•

Stroke adjustment (3): guns stroke is automatically adjusted depending on object height(only with horizontal guns arrangement)

1

1

3

3

2

2

Part presence
and height detection© GemaSwitzerland
GmbH- Allrights
reserved.
© GemaSwitzerland
GmbH- All
rightsreserved.

Part height detection with stroke control

Reduced overspray,
reduced waste

Improved productivity
and quality4•The presence, height and width of each object are detected at booth entrance (1) andtracked with the help of an encoder mounted on the conveyor•

Guns triggering (2): powder output is on only in front of the object•

Stroke adjustment (3): guns stroke is adjusted to the object’s height•

Guns positioning (4): guns – object distance is adjusted based on object widthPart presence anddimensions detectionReduced overspray,
reduced waste

Precise application,
improved quality© GemaSwitzerland
GmbH- Allrightsreserved.
© GemaSwitzerland
GmbH- Allrightsreserved.

Height / width detection5•The object presence and type is identified at booth entrance (1) (by code plates or by a
3rd party PLC) and tracked with the help of an encoder mounted on the conveyor.

•Guns triggering (2): powder output is on only in front of the object•Stroke adjustment (3): guns stroke is adjusted depending on object height•

Guns positioning (4): guns – object distance is adjusted based on object width•

Guns setting (5): application parameters are adjusted for each object type
1

1

3

3
5

5
4

Part presence anddimensions detection

2© GemaSwitzerland
GmbH- All
rightsreserved.
© GemaSwitzerland
GmbH- All
rightsreserved.

Part recognition, how does it work?

2
4

Reduced overspray,
reduced waste

Application adjustment,
best quality

6Reduced oversprayGema part detection systems ensure thatthe guns spray powder only on the object.

•Guns are turned off when there is no object
in front of them.

•Guns stroke is adjusted so that guns spend
most of their time in front of the object.

•Excessive overspray is eliminatedDesiredOverspray© Gema Switzerland GmbH - All rights reserved.

• Reduced powder waste in the recoverysystem Reduced deterioration of powder in therecovery system

EliminatedOverspray

7

Powder savings
Gema part detection systems reduce
powder overspray to a minimum.
© Gema Switzerland GmbH - All rights reserved.

•

 Reduced powder waste in therecovery system•

Powder application settings can be
optimized based on the object to coat

 Optimized film thickness control
 Reduction of excessive film
thickness

8

Stable, improved coating quality•

Gema part detection systems reduce powder overspray to a minimum.

•Guns stroke, positioning and application settings can be optimized based on eachindividual object to coatBest coating quality for each individual object type

Full automatic operation, no manual intervention required© Gema Switzerland GmbH - All rights reserved.

 Reduced deterioration of powder in the recovery system

9