066-10 Lohr, 2010-09-28

Gentle Yet Sturdy: Rexroth Inverted Tooth Chains for Hollow Glassware Production and Solar Cell Manufacturing

Take-out gear

Take-out gear with a Rexroth inverted tooth chain in IS machines for hollow glassware production

Smooth running and consistent speed are decisive factors for achieving a high level of quality in glass production. This prevents vibrations in vacuum coating plants and ensures proper coating of solar glass. Constant, uniform transport, even at high production speeds and temperatures, also makes all the difference in hollow glassware production. Inverted tooth conveyor chains from Rexroth can manage all of this and are gentle yet sturdy. Rexroth’s inverted tooth drive chains are in charge of the fast and safe movement of take-out gears for bottle placement after the forming process. These high-performance chains, which have been additionally optimized for speeds of over 50 meters per second, work reliably and precisely even at extremely high temperatures.

Inverted tooth chains from Rexroth enable precise positioning on belts and the safe transport of hollow glassware, such as bottles or glasses, in modern IS machines. Rexroth inverted tooth chains are also the optimum solution for driving ceramic rollers to transport solar glass panes.

Rexroth’s inverted tooth chains are characterized by a long service life despite extreme ambient conditions, such as transport of glass articles with temperatures of over 600°C or transport in a vacuum.

Thanks to consistent use of a 2-pin system, Rexroth has achieved a design that is exceptionally smooth running and generates minimum noise. Thanks to rolling pivot joints, both profile pins roll against each other perfectly, theoretically without any sliding friction. This design principle, used in all Rexroth inverted tooth chains, reduces losses, minimizes wear, and makes it possible to reach high speeds while maintaining a long chain service life. Uniform, gentle, and precise running is ensured by the comparatively low entry impact of the inverted tooth chain when it engages the sprocket.

The inverted tooth conveyor chains have a smooth surface on both sides, since Rexroth uses innovative laser welding processes for the support pins. This creates a gap-free transition to and from the inverted tooth chain, which is of great importance for many loading and unloading processes and thus increases operational safety. The smooth sides of the inverted tooth chains prevent hazards found in conventionally riveted chains, such as pin breakage. Plus, this is the only process where the pivot pins are permanently fixed in an outer plate with a uniform thickness, meaning that the chain does not require relatively thick protective plates.

Improved kinematic properties and further optimization of the plate design are all important contributions to increasing the dynamic strength of the inverted tooth drive chains. The best example is the HPC (High Power Chain) series from Rexroth, which continually achieves a higher drive performance at speeds of over 50 meters per second, or roughly 180 kilometers per hour. At the same time, they generate much lower noise emissions at higher speeds and with comparable parameters than, for example, those for a toothed belt.

Rexroth will be exhibiting at the Glasstec in Hall 14, Stand A20.

Bosch Rexroth AG is one of the leading drive and control technology specialists worldwide. Under the brand name of Rexroth the company supplies more than 500,000 customers with tailored solutions for driving, controlling and moving. Bosch Rexroth is a partner for industrial applications and factory automation, mobile applications and using renewable energies. As The Drive & Control Company, Bosch Rexroth develops, produces and sells components and systems in more than 80 countries. In 2009, the company of the Bosch Group with its 34.200 employees generated sales amounting to about EUR 4,1 bn.

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