Essemtec doubles dispensing speed and accuracy [Sep 2011]

September 26, 2011 10:17 am

Essemtec, one of the global leaders in manufacturing of highly flexible surface mount technology (SMT) production equipment introduces the new Scorpion automatic dispensing system. The machine is built on the Paraquda machine base, which enables highly accurate dispensing and performance of up to 100’000 dots per hour. The machine can be equipped with up to four different dispensing valves and is designed for flexible and productive dispensing in electronics manufacturing, LED assembly and other industries.
New machine base increases speed and accuracyThe Scorpion can dispense up to 100’000 dots per hour with an accuracy of ±25 μm (3s). The exceptional performance is achieved due to the new dispenser base, the Paraquda machine platform. Its XY-portal is built on a robust mineral cast chassis that provides excellent damping and smooth motion at high speed. The H-Drive features precision linear measuring devices to guarantee highest accuracy for demanding tasks.  The XY-drive is so powerful that it can move up to four independent dispensing valves simultaneously. This minimises changeover time between different applications and allows multiple media to be dispensed in one run.
Twin Dispensing: Simultaneous Operation Saves Time The Scorpion implements a twin dispensing mode for the production of high volumes. Two valves can dispense simultaneously on two different locations, the distance between the valves is adjustable.
Typical twin dispensing applications include LED manufacturing and electronics assembly with multiple printed panels. When the distance between two panels is constant, two jet valves can apply glue dots simultaneously. Twin dispensing can double throughput for such applications. Freedom of MotionThe working range of the Scorpion is bigger than most other dispensing systems. The dispensable area is specified at 650 x 500 mm (25.6 x 19.7″) for a standalone machine and 510×470 mm (20×18.5″) for inline machines. However, the working area can be used flexibly and can be equipped with customer-specific substrate holders.
Each of the dispensing valves (maximum of four) is equipped with an independent, highly accurate C-drive with an 85 mm stroke (3.34”). As such, the Scorpion can dispense on multiple levels, and it can dive into cavities or vault over components.
Any Metering Valve Almost any kind of dispensing valve can be used with the Scorpion. Standard valves include time-pressure, archimedean screw and piezo-flow-valve for solder pastes. The ideal valve for an application is determined by the user or by process specialists.

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