Hot Presses

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Integrated workcell
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- 25.78 MB
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Integrated workcell for the investigation of thermoplastic composite production

Credit: DLR (CC BY-NC-ND 3.0).
Thermostable robot
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A flexible and thermostable robot on a linear axis may serve to load the hot press and investigate different production processes

Credit: DLR (CC BY-NC-ND 3.0).
Infrared heating system
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The hot press is combined with an infrared heating system and equiped with a rapid transfer system to move the pre-heated organo sheets

Credit: DLR (CC BY-NC-ND 3.0).
Infrared heating system
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The hot press is combined with an infrared heating system and equiped with a rapid transfer system to move the pre-heated organo sheets

Credit: DLR (CC BY-NC-ND 3.0).
Rapid transfer system
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The rapid transfer system can also be manually loaded with net shape organo sheets

Credit: DLR (CC BY-NC-ND 3.0).
The composite hot press in action
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The composite hot press in action: short cycles for complex structural components

Credit: DLR (CC BY-NC-ND 3.0).
Sine wave beam: crash-absorber for helicopter sub-floor configurations
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Sine wave beam: crash-absorber for helicopter sub-floor configurations

Credit: DLR (CC BY-NC-ND 3.0).
Sine wave web after hot press molding
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Sine wave web after hot press molding

Credit: DLR (CC BY-NC-ND 3.0).

The Institute of Structures and Design (BT) operates three hot presses at its two sites in Augsburg and Stuttgart to investigate the production processes for structural components made of fibre-reinforced thermoplastics.

Hot press molding allows fast forming and consolidation of complex parts. In combination with the infrared heating system, short cycle times can be achieved based on the thermoforming of organo sheets.

In addition to thermoforming, the systems can also be used for variothermic consolidation of sheets and components. An integrated cooling system with water and airflow allow fast and homogenous cooling of the parts.

At DLR's Center for Lightweight Production Technology in Augsburg, the hot press is embedded in an integrated workcell, the so-called thermoplastic cell (TPZ), with a thermostable robot on a linear axis to investigate the entire process chain.

The characteristics of the hot presses are:

Type:	Wickert WKP 4400 S
Press surface:	1.8 m x 1.2 m
Press force:	400 kN
Max. temperature:	450°C

Type:	Dieffenbacher HPO 400
Press surface:	1.25 m x 1.2 m
Press force:	4000 kN
Max. temperature:	450°C

Type:	Fritsch
Press surface:	300 mm x 300 mm
Press force:	200 kN
Max. temperature:	450°C

Contact

Andreas Buchheim
German Aerospace Center (DLR)
Institute of Structures and Design , Center for Lightweight Production Technology
Augsburg
Tel.: +49 821 319874-1043

Georg Doll
German Aerospace Center
Institute of Structures and Design
Stuttgart
Tel.: +4971168628241
Fax: +49 711 6862-227