Small Parts, Great Efficiency
Engel Produces Catheter Components from LSR in Series
Tie-bar-less technology is key to cost effectiveness. Given that mold fixing platens on Engel victory injection molding machines can be used to the hilt, relatively small machines can be fitted with large molds. This is especially efficient when multi-cavity molds are used which, although being large, require relatively little clamping force for the precise molding of fairly small component surfaces. Where a tie-bar-less injection molding machine is deployed, therefore, the machine size is determined not by mold volume, but by the clamping force required for the molding process. Thanks to tie-bar-less technology, much smaller injection molding machines can be used for many applications.
The force divider in the tie-bar-less clamping unit enables the moving mold mounting platen to follow the mold exactly parallel while clamping force is building up, and ensures that the applied force is evenly distributed across the whole surface. This means both outer and inner cavities are kept closed with precisely identical force, which leads to consistent wall thicknesses. Even when using very low-viscosity materials such as liquid silicone rubber (LSR), flashes are reliably prevented, so injection molded parts require no subsequent processing.
Other advantages of tie-bar-less clamping units include improved ergonomics, set-up time savings and highly efficient automation concepts. Robots have maximum freedom of movement and are able to access the mould area from the side without obstruction. Bearing these two factors in mind, the Engel victory is ideal for use in cleanrooms. Moreover, the tie-bar-less mold area already lessens air turbulence constructively.
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