Coval Gripping Pneumatic & Hydraulic

Vacuum chambers for automated applications with robots and cobots

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Coval offers vacuum chambers for automated applications, from gripping single parts to complete layers. The range equally suited to equipping either cobots or robots, offering a catalogue of modular, standard products, designed to meet the customers’ needs.

Coval, with its complete range of vacuum chambers, can be applied at various points along the whole production chain, from the manipulation of individual objects to palletizing a full layer at the end of the line. The range includes 3 complementary series, starting with the ultra-compact CVGC models, designed from carbon specifically for cobots. Further in the range is the CVGL series of compact and lightweight chambers for robots. At the top end is the MVG modular series, which is fully configurable.

The CVGC, the carbon vacuum chamber for cobots

The CVGC carbon vacuum chamber is not just an adaptation of an existing product, but a plug and play product designed 100% for the various cobot models, The lightness of the CVGC due to its carbon material (the smallest model weighs less than 1 kg) facilitates the optimum use of collaborative robots and preserves their lifting capacity. The vacuum generator, control cartridge, vacuum switch and silencer are grouped together in a compact function block. The CVGCs are versatile, with a foam grip interface suitable for many materials and available in three sizes: 150 x 150 mm, 240 x 120 mm and 320 x 160 mm. In addition, Stéphane Garcia, Marketing and Communication Manager at Coval, points out: «the attachment Interfaces and connectivity are adapted to the particular cobot model in each case, which means that the CVGC fits on all types of cobots. «

CVGL, the lightweight vacuum chamber for robots

The dimensions and weight of the CVGL vacuum chambers make them one of the lightest and most compact ranges on the market. By reducing the weight and size of its vacuum chambers, COVAL enables integrators and manufacturers to integrate them into low-power robot manipulators. This translates into savings in terms of investment and operating costs.

To match the application requirements perfectly, the CVGL range of vacuum chambers is available in 3 standard lengths (424, 624 and 824 mm) or a custom length, and a fixed width of 120 mm, with 3 gripping interface technologies (foam, suction cups and COVAL-flex), 3 suction powers and an integrated or remote generator. They offer a vacuum handling solution suited to parts of various sizes, weights and materials.

MVG Modular Vacuum Grippers: customization as standard

The MVG modular vacuum gripper, which is mainly used for heavy payload robots and palletizers, offers the possibility of configuring a gripper that is perfectly adapted to each application, for loads of several hundred kg. To achieve this result, major developments have been carried out and patented.

The first choice the user has to make is the size, because MVGs are custom-made to the desired size from 150×150 to 1200×1000 mm. To ensure that the vacuum chamber is perfectly adapted to the specific requirements the user can also configure the vacuum generator and the gripping interfaces such as foams and suction cups. «The MVG grippers are equipped with gripping interfaces, either by means of suction cups, foam, or Coval-flex gel. These solutions ensure an optimal grip regardless of the size or material of the object to be gripped (cardboard, metal, plastic, glass, concrete/stone, composites, wood, etc.),» explains Stéphane Garcia. «High-performance, flexible and robust, the MVG grippers can be multi-zone, i.e. equipped with several independent gripping zones, which makes it possible to ensure staggered or multiple pick-up and drop-off, guaranteeing optimized vacuum management as well as a reduction in leaks and consumption,» he emphasizes.

Precise vacuum management with multizoning is particularly useful for staggered pick and place, managing different formats to be handled or optimizing palletizing layers.

Stéphane Garcia adds: «Coval has been recognized for over 35 years as one of the world’s specialists in systems and components for vacuum gripping. Our products are renowned for their quality and reliability. Our added value also lies in our teams of specialists who support our customers in the technical definition of the solution that precisely meets their needs and constraints. «


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