Highest requirements

Paving block factory in Belgium invests in future technology

Fig. 1 Factory layout.
Abb. 1 Werkslayout.

Fig. 2 Ramp to the aggregate feeder. Abb. 2 Rampe zur Zuschlagsaufgabe.

Fig. 3 Surge bin: this module ensures the required material flow as determined by laser in the feeding hopper. Abb. 3 Zwischenbunker: dieses Modul sichert den über Laser im Fülltrichter ermittelten notwendigen Materialfluss.

Fig. 4 The cone mixer of Kniele with a capacity of 3 m³ of concrete.
Abb. 4 Der Konusmischer von Kniele fasst 3 m³ Beton.

Fig. 5 The mixing station is placed in the adjacent hall.
Abb. 5 In der benachbarten Halle ist die Mischstation untergebracht.

Fig. 6 The block making machine is separated. Abb. 6 Der Steinfertiger steht abgekapselt.

Fig. 7 The movable vibrating table as trade mark of
the production line.
Abb. 7 Der verfahrbare Rütteltisch als Markenzeichen der Anlage.

Fig. 8 Detail solutions of the Quadra block machine are also their trade marks. Abb. 8 Detaillösungen der Quadra-Fertiger sind auch
deren Markenzeichen.

Fig. 9 Elevator and lowerator are also made by Quadra. Abb. 9 Hub- und Senkleiter ebenfalls aus dem Hause Quadra.

Fig. 10 The dry side.Abb. 10 Die Trockenseite.

Fig. 11 The control cabin allows to look at the removal side including the robot as well as the board machine (back side). Abb. 11 Die Kontrollkabine ermöglicht den Blick auf die Ausräumseite samt Roboter sowie auf den Brettfertiger (rückseitig).

Fig. 12 a to c The „clever“
robot knows how to put which rows together to layers.
Abb. 12 a bis c Der „schlaue“ Roboter weiß, wie er welche Reihen zu Lagen packen muss.

 The Prefer Beton company is located in Flemalle near Liège (Belgium). Besides a precast concrete plant the company is operating a paving block factory here. Both factories are conveniently placed as regards transport facilities on the bank of the river Maas.

When the paving block factory was fully utilized and the production quality of the concrete products did no longer satisfy the requirements of the company‘s management, Prefer opted for a new investment. The new block machine and the installation, however, had to fulfill drastic requirements in terms of quality, productivity and versatility. The subject of noise protection was also a criterion a choice. The municipality demanded that the maximum noise pollution outside the production hall has to be < 50 dB. Another aspect was to reduce the vibration transfer because the vibration of the block...