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The product being packed is lime granulate with two granulation sizes:
- 1 mm – 4 mm
- 4 mm – 8 mm
The granules are packed into big - bags of 500 kg with a foil insert. When closing the bags, air is being sucked out.
The robot-based packaging line is the final section of a newly activated lime granulate production line. According to the assumptions, it reaches a capacity which ensures collecting the entire production from the area. Thanks to the industrial robot, which executes tasks related to handling the packing machines, another purpose of the investment project in the form of the automation of particularly cumbersome physical works has been achieved.
The line for packaging granulate into big - bags reaches a capacity of 30 t /h. The maximum output of a single lane is 40 500 kg bags /h.
The packaging line employs a six-axis type R2000iC industrial robot from FANUC Robotics, equipped with a special gripper designed to pick up empty sacks and to attach them to the filling hoppers of the packing machines. The robot's job is to serve two packing machines.
The robot picks up an empty sack from a special module which consists of a device for picking up bags, and of an empty sack magazine, with a minimum level signalling device and an emptiness signalling device.
The robot's range is 2655 mm, and the repeatability of the robot's operation is ± 0.2 mm.
The robot attaches empty 500 kg big - bags to the filling hoppers of the two packing machines type EWN-BB. Upon attaching a bag, the bag's sleeve is automatically clamped and the process of filling the bag commences. The bags are filled and weighted when standing. The filling proceeds by means of a gravitational dispensing valve. The track of the material is made of stainless steel. After the end of the filling cycle, the bag is transported to the automatic air removal bag, and to the welding module in which the polythene bag sleeve insert is being welded. The sealed bag is transferred to the collection site. Each of the lanes has a buffer for at least 3 big - bags.
Characteristics of EWN - BB packing machines
