The Nordson DIMA Dispense Master is a Desktop Dispensing platform providing a wide variety of applications. The machine is one of the few desktop platforms moving the dispense valve in X,Y and Z direction instead of moving the product on a moveable table. This makes programming very easy. The Dispense Master is equipped with a standard camera for programming purposes, calibration and fiducial alignment. The software is based on the same platform as all other Nordson DIMA machines and provides a library structure to store all important parameters. The work area of the Dispense Master is 320 x 420mm. Compared to the HC-200 or Elite, the Dispense Master can have only one valve mounted in the machine. If the design of the PCB however requires multiple valves, the production needs to take place in batches. In that case the batch first needs to be coated with one valve and after this the same batch will be returned into the machine in order to complete the board with the next valve. If the design of the board however allows the complete board to be coated with one valve than this of course is the ideal situation. The Dispense Master therefore is the ideal machine for small production batches and boards that can be coated with only one valve.
The Dispense Master is controlled by a MS-Windows based software that can run on a normal PC equipped with MS-Windows. The software makes it extremely easy to programme lines circles and dot patterns to operate the Dispense Master. A library with different dot sizes, line widths and a tools to import data from a CAD systems bring even more comfort to the user. A downward looking camera is used for pattern teaching, making it easy to create dispensing co-ordinates. Printed circuit boards are held in the Dispense Master by a magnetic quick change fixture. The optional ESI vision system can be used for automatic fiducial alignment.
Programming the Dispense Master is extremely easy. First the programmer points out 2 reference points on the product, then some test dots can be selected and taught. A library of dot sizes with a cross reference to the packages makes selection of dots a simple job. In one operation several different dot sizes can be used. Change of dot size is done by changing parameters in the software. When a dot type is selected you only have to point out with the camera where to place the dot. Functions like fixed step, step and repeat and free trackball movement make programming extremely easy. For multiple PCB's, one PCB has to be taught after which you only have to tell the Dispense Master where to repeat the same PCB again. For lines circles and fills there is a library containing different geometric shapes and line thicknesses
Using the DIMA CAD conversion software brings programming of dots on a large PCB back to several minutes.