Alteco_EN - 第5页

The basic structure of Alteco with integrated cooling section corresponds to that of Alteco with external cooling section. Zoning within the heating t owers is diff erent, though. The rst tower houses heating zones 1 to…

Technical details

An overview of the Alteco

The vertical drying system Alteco allows flexible, high-perfor-

mance drying and hardening processes of all protective paints

and casting compounds that can be hardened with convec-

tion heat. The system consists of two process towers, which

are each divided into four heating zones, and a downstream,

segmented cooling tract. The circuit boards are loaded into

goods carriers at the furnace infeed. These run through the

drying process in the system in a vertical direction and are

stacked on top of each other during the hardening process.

minimal

space required

1. Infeed/loading

In the infeed area, the painted sub-assembly

is handed over to the transport system via the

supply belt. Sensors record the width for each

circuit board. A grabber pushes the circuit

board onto the goods carrier, which is previous-

ly adjusted to the width of the printed circuit

board to be loaded and measured. During the

loading process, each goods carrier is precisely

xed, positioned and centred. A multiple load-

ing of the goods carrier is possible.

4. Air feed

The heating system in the process towers

works according to the convection principle

in circulating air operation. The tempera-

ture can be separately regulated in all eight

heating zones. A specially developed air feed

guarantees even warming of all construction

elements. The supply air can be pre-heated

and pre-set individually in the volume flow

depending on the heating zone. The waste air

volume is also separately regulated per zone.

The system can thus be ideally coordinated to

the volume of paint and the solvent throughput.

2. Circulating transport system

The sub-assembly in the goods carrier is

transported through the system on a circulat-

ing goods carrier mechanism. The cycle time

is adjustable. Via a cross-beam, the goods

carriers are moved under the ascending tower,

where they are taken over by a stroke mech-

anism. After running through the towers, the

goods carriers are transported to the unloading

station by means of a second cross-beam.

The empty goods carriers are clocked into the

loading station again.

5. Cooling tract

The downstream cooling tract consists of three

transport segments that adapt automatically

to the respective transport width. Cooled air is

blown from above and below onto the sub-as-

sembly per segment. Via a heat exchanger, the

waste air is handed over from the internal to

the external water cycle and thus transported

away from the production room in an energy-

efcient manner.

3. Clever stacking principle

The mechanics during the drying process in

the process towers work according to a vertical

stacking principle. The stroke mechanism

stacks the goods carriers over one another.

They are equipped with spacer pins so that they

are securely positioned. No running chains, oils

or lubricants are necessary for the entire trans-

port. A transfer transport mechanism hands

over the goods carriers at the highest point

into the descending tower. The de-stacking is

done in reverse order. All drives and mechanical

guideways are in the cold process area, for

reliable and long-lasting transport.

6. Software

The system is controlled by software via a touch

interface. All relevant process parameters are

documented. The width setting and the precise

positioning of the goods carriers thus run fully

automatically. In addition, the loading status of

the goods carriers and the internal temperature

of the heating zones (among other things) can

be monitored. SMEMA interfaces ensure the in-

tegration of the system in each production line.

The basic structure of Alteco with integrated cooling section

corresponds to that of Alteco with external cooling section.

Zoning within the heating towers is different, though. The rst

tower houses heating zones 1 to 4. The second tower houses

heating zones 5 and 6 and the cooling section. This principle

is suitable for assemblies that require shorter process th-

roughput times due to their lower mass or are not processed

directly afterwards and can therefore cool down in downstre-

am magazines.

Inline solutions

Alteco with integrated cooling zone

Heating zone 1 + 2

Heating zone 3 + 4

Heating zone 5 + 6

Cooling zone 1 + 2

Unloading

Robot

Goods Carrier

Circuit

Tower 1 Tower 2

Unloading

Goods Carrier

Circuit

Tower 1 Tower 2

Unloading

loading and unloading by robot

oading and unloading by transport

lane, boards have to be pushed on the

carrier

Bestprolingcapability

for reproducible procedures

Through the use of innovative control, blower, heating and

sensor components combined with a solid machine design,

Rehm supplies a high-quality system enabling you to run and

log stable processes in your production operations.

Our application specialists will be pleased to help you dene

the optimum setting parameters for your sub-assembly pro-

duction. In-house training courses and process and mainte-

nance training courses in your production environment round

off the services offered by Rehm Thermal Systems.

Our Alteco is easily accessible for minimum

maintenance effort. The system cladding and the

doors of the process towers can be opened. The

electronic switching cabinet at the back of the

system with EMC-compliant, transparent design

and a separate performance/control part is also

freely accessible. The heat exchangers of the

cooling tract can be replaced quickly and conven-

iently.

Easy maintenance

Stable temperature prole

Freely accessible switching cabinet Easy maintenance of the heat

exchangers in the cooling tract

°C

100

zone 1–4 zone 5–8

500 s 1000 s 1500 s 2000 s