Full-electric injection for the production of SD cards

image Billion (Bellignat, France) and Polar-Form (Lahr/Schwarzwald – Germany) will show at the coming K2010 the production of SD cards on Select injection moulding machine. A 2+2 cavity tool will be installed on a Billion Select full-electric H80-50 Tons, the smallest clamping unit of the range, available from 50 to 400 Tons. The main assets of this application are: small footprint, precision and energy efficiency, combined with the production in a clean environment.

image On the K’show, the Billion full-electric machine from the Select range is equipped with a Ø 18 mm screw, especially adapted to PC. The machine produces with the cooled runner mould from Polar-Form the two shells (upper and lower) of an SD card. The total injected weight is image3.7g. The particular design of the mould allows for the sprue to be separated from the part during the holding phase, thereby avoiding an additional operation after production. The mould is very compact (296x246x316 mm), and may be mounted on very small tonnage machines. At Polar-Form, in the real production configuration, an on-line assembling unit completes the installation; according to Dieter Goeppert from Polar-Form, this is the reason why the choice for 2+2 cavities has been made. A closed cooling system in the mould (3+3) ensures the optimized cycle time of 8 seconds. The high performance used material LG DOW Calibre 301V-10 provides the idealimage fluidity to the process.

A closed conveyor from MTF-Technik (Bergneustadt – Germany) dedicated to parts evacuation is installed under the high speed toggle of the machine. Parts remain protected from dust. The mould together with the machine and the conveyor are working in a clean environment.

This demonstration combines a very precise full-electric injection moulding machine and a compact mould. The manufacturing cell may also be fitted with a laminar flow box for certification according to the ISO 14644-1 for clean rooms in class 6.

For more information, click on BILLION, POLAR-FORM, MTF.