Roemheld's new clamping system is built for high pressure with an extra-secure locking system to ensure safety.
The Roemheld range of die clamping systems for presses, systems and injection moulding systems has been supplemented with a new series of robust wedge clamping elements. The group of companies has developed a hydraulic model specifically for the fixing of upper dies which meets the highest of safety requirements. An additional locking cylinder hold the wedge clamping bolt in position and prevents any inadvertent retraction. Release of the clamping device is only possible once the locking mechanism has been opened. This will ensure that the upper die is retained in position, even in the event of a pressure drop.
The wedge clamping element itself comprises a block cylinder with housing-guided clamping bolt. Its angled contact surface creates a frictional connection in conjunction with angled die clamping edges. A position control is integrated as a space-saving measure to monitor the clamping and release position, as well as the status of the locking mechanism. A notification is also issued wherever there is no die available.
As the Roemheld wedge clamps are constructed as a variant system, they can be flexibly adjusted in accordance with respective customer requirements. The standard range already includes seven designs with clamping forces of 25 to 630 kN and cylinder dimensions of between 25 and 125 mm. Clamping strokes of 15 to 36 mm are available here, and the maximum operating pressure is 350 bar respectively. If the elements are to be used for processes with high heat requirements, special designs are also available which are temperature-resistant up to 300 °C. In addition, there are also versions for straight clamping edges, as well as models with clamping forces of up to 1250 kN and even higher retention forces. Further options include a special permanent lubrication and multi-layer, high-tech coatings for the clamping bolt and the housing which have a positive influence on the wear properties.
The variant design guarantees cost-effective production, high parts availability and short delivery times. As existing dies can often be retooled for wedge clamping with the introduction of wedge bars, the elements are also suitable for retrofitting.