Extrusion Asia Edition 3-2016

29 Extrusion Asia Edition 3/2016 比较：重型 400S与400标准 系列（左）及 150S与150标准 系列（右） In comparison: A heavy-duty 400S against the 400 stan- dard-series (left) and a 150S against the 150 stan- dard-series (right) 所有恩太思挤出机，都装有可更换 的齿轮箱内连接套，所以能够方便地升 级到新的系统。其它齿轮箱系统，需要 逐个检查其升级的可能性。 重型系列的挤出 与标准系列行星辊子挤出机相比， 重型系列配备了更大的齿轮模数以实现 更高的耐久性和更长的维护间隔。采用 这一系列的机器，典型地可应用于进行 高机械负载加工的部件，例如生产填充 率超过80%的橡胶或热塑性塑料。 在过去，仅仅具有高产量的大型生 产单元280S和400S型号可以作为重型 挤出的型号。由于需求的增加，两个较 小的单元将补充到这一产品类别中来： 即 150S和180S。采用这些单元，现在 可以实现采用较小的生产线来生产要求 高的产品。自然，这两种新规格的挤出 机将同样按照恩太思结构单元系统进行 配置，也将具备通常的灵活性。除了采 用享有盛名的加工单元以外，行星喂料 区和渐开线传动内连接套两者都将同样 配备在新的规格中。 The planetary feeding section The feeding section of a PRE is traditio- nally designed as a single screw – but new processes and application scenarios spawn the need for fresh ideas: The pla- netary feeding section (PFS) is another milestone in the consistent further deve- lopment of the planetary roller system. The PFS blends in seamlessly into the modular ENTEX building-block system and offers – in contrast to a single screw section – the entire spectrum of process- ing technology, which is the key aspect for the PRE's well renowned reputation. The core of this development is the pos- sibility to feed any raw material directly and without detours into the processing unit – at virtually any position of the ex- truder. This offers a lean and more efficient pro- cess design and enables you to use the PRE’s potential via the following advan- tages: • Improved feeding behavior, especially for sticky materials • Good self-cleaning properties and a defined dwell time spectrum • Elimination of pulsations by directly feeding the material between the planetary rollers • Unrestricted processing capability at any filling degree • High tempering and mixing capabili － ties right from the feeding • All available roller variations can be used • Additional injection options along the module for combined solid/liquid raw material feeding are available The new involute gearbox spigot The planetary roller extruder has always been some kind of unconventional ex- trusion system – that’s why ENTEX never hesitates to take unconventional ap- proaches when it seems to be the right way to achieve the best results. According to this philosophy, a new gearbox spigot was created. It acts as the interface to the central spindle of the processing unit and passes on the entire torque. The assembly has been rede- signed in a way that the torque is now induced directly via the central spindle’s outer toothing itself. Thus, the splined section, which usually carried the load, can be omitted now. The following ad- vantages are achieved with the new de- sign: • Maximum torque can be increased up to 30 % on the same extruder • Lower wear of the processing compo- nents due to improved mechanical guidance of the central spindle • Easier maintenance and assembly due to less complex design • Increased flexibility due to modular slide-on screw segments • Optimum drive concept for the use of a planetary feeding section All ENTEX extruders, which are already equipped with an interchangeable gear- box spigot, can be upgraded easily to the new system. On other gearbox systems, the feasibility must be checked indivi- dually. The extension of the heavy-duty series In comparison to the PRE standard series, the heavy-duty series is equipped with a larger toothing modulus in order to achieve a higher durability and longer maintenance intervals. The machines from this series are typically used for ap- plications that impose high mechanical loads on the processing parts – for exam- ple the production of rubbers or thermo- plastics with filling degrees exceeding 80%. In the past, only the large production units 280S and 400S for high throughput quantities were available as heavy duty models. Due to increased de- mand, two smaller units will now supple- ment the portfolio: the 150S and 180S. With those units, it is now possible to realize smaller production lines for highly demanding products. Naturally, the two new sizes will also be set up in the pro- ven ENTEX building-block system and will provide the usual flexibility. In addi- tion to the well-known units, both the planetary feeding section and the invo- lute transmission spigot will be available for the new sizes, too. ENTEX Rust & Mitschke GmbH Heinrichstr. 67a, 44805 Bochum, DE www.entex.de