DiSpENSiNG SyStEmS
GV Robot with Nordson EFD xQR41 Series valve dispensing grease on aerospace pinion gear
What iS a DESktop automatED DiSpENSiNG SyStEm?
have increased first-pass yields with faster speeds while reducing product rejects. Flash forward to present day and we still see a trend of companies switching from manual to automatic dispensing for a variety of reasons. although manual equipment may be suitable
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for certain applications and comes at a lower cost upfront, when you need a more repeatable process with greater accuracy and verification of deposit location, automated dispensing systems are the best solution. Nordson EFD understands the value of
automated dispensing systems and the repeatability and precision they bring to manufacturing lines. the company’s dispensing robots are available in three or four axes configurations and offer a wide variety of camera options, software, height sensing, dispense inspection options, and more.
AutomAtED DispENsiNg systEms – A DEFiNitioN
a desktop automated dispensing system can be defined as a system that provides computer- controlled dispensing. the ability to connect your robot to a computer simplifies programming regardless of whether you are dispensing dots, lines, circles, arcs, or compound arcs. another benefit of computer- controlled dispensing is that everything is integrated. the closed-loop motor and linear encoders, CCD fiducial recognition, and laser
ince the introduction of desktop automated dispensing systems into manufacturing lines in the 1980s, robots
height sensing of the substrate allow the system to adjust programs to automatically compensate for both surface height changes and variations in product orientation. With automated dispensing systems, you are
able to dispense virtually any fluid from a syringe barrel, dispense valve, jetting valve, and other types of dispensing devices. this allows manufacturers to incorporate robots because they can be adjusted to fit a wide variety of applications from inline to batch dispensing. Nordson EFD’s robots can be further
categorised as cartesian robots, meaning that they use X, y, and Z coordinates. While most cartesian robots offer three-axis capability, some also offer a fourth axis. Four-axis robots can dispense along a 360° rotation plane, giving manufacturers the flexibility to dispense dots, lines, circles, arcs, compound arcs, and patterns at virtually any angle. another type of cartesian automated dispensing system is the gantry robot, which is designed with supporting axes that eliminate torque from the base axis. this results in a more stable robot that is perfect for larger payloads or when a large work envelope is needed.
progrAmmiNg mEthoDs AND VisioN systEms
most desktop dispensing robots come equipped with one of two programming methods. Nordson EFD offers Dispensemotion or teachmotion software. the company’s automated dispensing systems that do not include vision will come with teachmotion
software. this technology is integrated with a teach pendant, an intuitive handheld controller that allows for quick setup and easy, on-the-fly programming. Robots that come equipped with vision will use Nordson EFD’s Dispensemotion software. this software is powerful and intuitive and integrates easily with the camera. this vision-based programming works well for complex paths and allows users to program quickly with just a few clicks.
hEight AND tip DEtEctioN
Some dispensing robots can measure the height of each dispense location on the workpiece. the data gathered by the Z clearance can then be used to adjust for height variations from one workpiece to another. Nordson EFD’s E Series, EV Series, and GV Series all use mechanical height detection, which requires a device that contacts the workpiece and determines the height of a single point at a time. the pRo/pRoplus Series is the company’s only robot that utilises laser height detection instead. this version of height detection is perfect for fragile substrates and it can also determine the height of multiple points on a workpiece in a single sweep. all Nordson EFD robots can offer automatic tip adjustment, meaning that with every dispense tip change, the system will recalibrate and adjust the X, y, and Z height to make up for any discrepancies. this will ensure deposit accuracy every time.
Nordson EFD
www.nordson.com
40 may 2021 | FaCtoRy&haNDLiNGSoLutioNS
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