Production centre gets jet valve dispensing system

The FLX2011-MK is able to assemble complete flexible circuits.

The machine dispenses glue, solder paste or conductive adhesives, and places SMT components, LEDs and snap discs (metal domes) for membrane keyboards - all within one machine.

One of the two dispensers of the FLX2011-MK is now a jet valve dispenser, featuring contactless metering of the adhesive.

It is claimed to meter small dots faster and more accurately than other dispensers because it 'shoots' the dots instead of 'pulling them off', which is common for needle dispensing.

The higher accuracy of the dots enables the placement of smaller components such as 0603 chips and below.

The second dispenser of the FLX2011-MK can be customer selected depending on the specific application.

It may be an Archimedean screw dispenser, which satisfies the requirements of conductive adhesive or solder paste dispensing.

It can also be a time/pressure dispenser, a piezoflow valve or another jet valve.

The assembly head of the FLX2011-MK features an optical centring system that can align SMD components, LEDs and metal domes.

Therefore, all dispensing and placement required for flexible circuit production can be accomplished using one system, and the foils do not have to be moved.

Production of double-sided flex boards is also possible.

During production, the foils are held in position by a vacuum table.

Its working area measures 500mm x 300mm, with a large support area of 800mm x 300mm.

Smaller foils can be clustered and be produced like a single foil.

The integrated vision system automatically finds reference marks and corrects offset and distortion.

There are two alternatives of the vacuum table: one larger, featuring a working area of 800mm x 600mm, and a twin vacuum table.

The twin vacuum table is double the size of the single and is movable, thus one half of it is always outside the machine where the operator can load and unload foils.