As a result, the bags are kept in shape during drop-down and stacked firmly and dimensionally stable on the pallets. When laying down the bags, the gripper fingers open first and then the integrated cover plates. “In this way, we could deploy a standard product and adapt it to customer needs with just a few changes,” said Roland Singer, Team Leader Vacuum Automation & Robotic Gripping Division at Piab. For the hybrid bag gripper to fit precisely to the existing system and in particular to the roller belt used by Sapho, the fork spacing was adapted to the spacing of the rollers. As a result, the bag lies on the massive gripper fingers during movement. It grabs the sacks from above, drives the forks on both sides between the rollers of the belt, and thus picks up the bag on the underside. The hybrid gripper is attached to a robotic arm that removes the sacks and bags from a roller belt on which they are placed after filling. Accordingly, they are constructed for the handling of 10, 25, and 50 kg of salt bags from Sapho. Piab’s hybrid bag grippers are designed precisely for payloads of up to 50 kg. With the combination of robots and grippers from Piab, we are quick at the time when it counts,” said Uwe Grundstein, Technical Director at Sapho. “The impetus was that we wanted to get more power out of the machine and wanted to pack the pallets cleaner and more dimensionally stable. To be well prepared for the upcoming winter season, they decided to invest in a new gripper. Of particular interest was that no one had to monitor it directly - freeing employees for other tasks. When visiting another company, they noticed a better gripping solution. The regions of southern Germany, Austria, and parts of France are supplied by Sapho with de-icing salt from its up to 50,000 tons of salt warehouse, which is partly filled from May to October from mines in the region. The width of the gripper was customized according to the roll spacing.Īt the company Sapho GmbH, a company of the Bilgram Chemie Group, the old bag gripper no longer provided the necessary performance. The bag gripper from Piab takes sacks off the roller belt.
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