Vacuum Technology for Handling Automotive Glass

The float glass is processed further in several linked steps to windows for cars. Possible coatings are applied to the glass before processing.

During shape cutting, the glass is cut to its final size. Then the edges are ground precisely and openings/holes are applied for installation of additional components to the glass. The subsequent bending process shapes the glass while it is heated to up to 600°C. The cooling process gives the glass the required strength. Windshields (Laminated glass) are laminated with PVB film and permanently bonded in an autoclave. After possible assembly processes, the final cleaning and quality control, the packaged windows are sent to final automotive assembly line.

Vacuum technology in final automotive assembly


Schmalz Inc.
5850 Oak Forest Drive
Raleigh NC 27616
Estados Unidos de América

Tel. +1 919 713-0880
Fax +1 919 713-0883
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Requirements for Vacuum Technology

High shear forces on separation powder
To avoid the adhesion force between stacked glass sheets, the sheets are coated with separation powder. The special suction cups SGF and SAB generate high shear forces even when separation powder is used. The specially developed profile of the suction cups ensures high friction for secure handling. The low stroke of the suction cups SGF enables maximum precision while the flexible bellows of the SAB also adapt to shaped glass, e.g. side lites.

Mark-free handling
Marks on the surfaces of the glass sheets should be avoided throughout the entire production process chain. Suction cups made of the markless material HT1can also be used at temperatures of up to 170°C (e.g. unloading the bending furnace). In combination with a low surface pressure, the suction cups SGF and SAB are ideal for meeting these requirements. With the suction cup covers SU, any contact between the suction cup and the glass can be prevented.

Short cycle times and high system availability
These handling processes require short cycle times. The compact ejector SXMPi offers an integrated suction and blow-off function. This minimizes suction and release times, as well as energy consumption, since the integrated automatic air-saving function means that the ejector is only activated when vacuum is needed. The intelligent compact ejector also features numerous functions for energy and process control as well as predictive maintenance funtions to increase system availability.

Energy-saving and quiet
In the assembly processes for automotive glass, manual and automated processes are often closely connected. The glass has to be fixed in place for a long period. The compact ejectors SEAC-RP offer suction and blow-off functions in minimal installation space, enabling them to be used right on the suction cup. The integrated pneumatic air-saving regulation reduces the compressed air consumption to a minimum, while ensuring that the system produces very little noise.

Gentle area gripping
The area gripping systems FXP/FMP grip large areas of the glass so that only low local surface pressure is generated. This allows even sensitive coatings or imprints to be handled without damage. Thanks to the integrated valve technology, the grippers can also handle workpieces that are smaller than the actual gripping surface. The universal gripper FXP also offers an integrated vacuum generator.

Precise grinding of glass
In addition to powerful holding forces, the height tolerance also plays an important role in the grinding process of glass, because even minimal height differences can cause significant fluctuations in quality. With the Innospann cups ISCUP and the vacuum blocks VCBL-G, the workpieces are clamped safely and precisely. In addition to the high shear force absorption, the vacuum blocks ensure minimum height tolerances for a high quality of the glass edges. The felxible Innospann cups solutions also allow the processing of different shapes with minimal set-up work.

Productos para el sector de vidrio para automóviles

Ventosas para la manipulación de vidrio

  • Manipulación de vidrio plano
  • Elevadas fuerzas transversales y de retención
  • Materiales que apenas dejan huella

Eyectores compactos X-Pump SXPi / SXMPi con IO-Link

  • Capacidad de aspiración hasta 220 l/min
  • Máx. vacío 85 %
  • Cuerpo de plástico

Eyectores con sistema de expulsión SEAC RP

  • Capacidad de aspiración hasta 35 l/min
  • Máx. vacío 85%

Sistema ventosas vacío superficies FXP/FMP

  • Ventosa universal para el paletizado/despaletizado, preparación y clasificación automatizados
  • Dimensiones: 442 x 130 a 1.432 x 130 mm
  • Elemento de hermetizado: Esponja hermetizante, ventosa

Ventosas de bloque VCBL-GL

  • Ventosa de bloque de aluminio con conexión de tubo (8/6 mm) para mesas lisas
  • Marco obturador superior e inferior recambiable sin necesidad de emplear herramientas
  • Altura con una tolerancia ±0,05 mm

Sistema con cambio rápido SQC

  • Un sistema de fijación completo se compone de alojamiento de Mono-Base con cambio rápido, bocas de ventosa con cambio rápido y tapas
  • Altura total 80 mm (Mono-Base con cambio rápido y boca de ventosa con cambio rápido), tolerancia en altura de ±0,1 mm