Hotline May 2015 online
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Customer information from EWIKON Heißkanalsysteme GmbH Enhanced efficiency Diving mask frame production with a side gating hotrunner mould Pages 2 - 4 Gate exchange insert HPS III-MH valve gate technology Enhanced ease of maintenance for valve gate systems Extended production area for optimized mould plate manufacturing

application 2 I EWIKON Anwendung Hotrunner mould enhances efficiency for diving mask production The market for stylish sporting goods is a price sensitive one. An efficient production is decisive to profitably and successfully compete here with a product manufactured in Western Europe. For the production of the frame parts for a new diving mask from Tribord, a private brand of the Decathlon Group, the Italian injection moulder AR Group - Plastic Division trusts in a new direct side gating hotrunner mould designed by mould maker Linea Stampi. AR Group - Plastic Division is a onestop supplier...

The Tribord diving mask comes in a variety of trendy colours changing every season (above) The finished frame segments are picked up by a handling system (left) During the project planning stage all production steps were analysed with regard to efficiency and potential cost saving. Experiences with another diving mask version already produced inhouse as well proved to be helpful here. “The end assembly of the soft and hard components of a diving mask requires many manual operation steps”, Fabrizio Gianni, project manager at AR Group Plastic Division explains. “This does not leave much room...

the problem-free processing of sensitive materials. View on the mould's ejector side with partially filled parts showing the good system balance early design stage to ensure the best possible integration of the hotrunner components and to define the optimum flow channel layout. Of course, for even filling of the parts the gating points had to be placed in the middle of each segment. However functional and visible surfaces in that area made it difficult to find an appropriate position. EWIKON recommended direct side gating with HPS III-MH nozzles onto an easy-toreach position at the backside...

NEW valve gate option! Gate exchange insert facilitates maintenance When operating valve gate systems the gate area is especially liable to wear. Reasons are abrasion caused by high shear rates or reinforced materials as well as overload on the valve pin generated by belated closing which leads to deflection and causes a side movement. As a rule both types of wear are causing a loss of dimensional accuracy of the gate bore relatively soon. The consequence is a deterioration of the part quality for example the formation of flashes at the gating point. Even technical features like the...

Compact valve gating Process-reliable processing of small POM parts with hotrunner systems

The process-reliable production of POM parts with hotrunner systems is challenging in many cases since the material is extremely sensitive in terms of temperature and residence time. This particularly applies to the homopolymeric type. For applications with a very high number of cavities and small shot weights EWIKON here is increasingly using multi tip nozzles with valve gate technology. A customer from the furniture fitting industry already successfully uses several 128-drop hot halves for the large scale production of high-precision rollers made of Delrin® 100 with a shot weight of 0.15...

Extended production area for optimized mould plate manufacturing Horizontal milling machining centres (above) and portal grinding machine (right) for the production of mould plates EWIKON has further invested in extending the room and machine capacities at the headquarters in Frankenberg by building an additional 2,000 m2 low energy hall for production and technical administration. Thus, the total production area now covers more than 6,000 m2. Increasing the number of machines the main focus is placed on a production line for the efficient production of large mould plates. This is due to...