Magnetic gripper
Vertical access to sheets
Goudsmit has redesigned its magnetic grippers. The grippers are equipped with a permanent neodymium magnet. These handling magnets can be switched on and off using compressed air and have a threaded hole for attachment to the robot arm.
The recently redesigned magnetic gripper from Goudsmit Magnetics in Waalre, the Netherlands, is used for the automated picking, placing or positioning of steel objects or other ferromagnetic objects. This includes, for example, picking up sheets from presses, destacking products from boxes (bin picking), assembling steel parts or handling punched steel parts, blanks and perforated steel sheets in robot applications. The ultra-light magnetic gripper is equipped with strong, permanent neodymium magnets and is therefore particularly safe, according to the company. The handling magnets can be switched on and off using compressed air and have a threaded hole for attachment to a robot arm, possibly in conjunction with a spring plunger.
The system is suitable for lifting and transporting thin steel sheets individually, among other things. The rubber block at the end prevents the workpiece from shifting during vertical lifting and prevents damage to the workpiece. The easy-to-connect system is used by a number of major car manufacturers and in the sheet steel industry, among others.
When this magnetic gripper is used on robot arms, conventional vacuum technology is replaced by magnetism. The disadvantage of vacuum grippers is that they are prone to failure and wear, says Goudsmit. In addition, the vacuum suction cups must be positioned correctly, because if they are partially positioned on a hole, they will not work. The electromagnets used by manufacturers do not offer a solution to this problem either, as they are too heavy and therefore less sheet material can be lifted. A magnetic gripper with permanent magnets is considerably lighter. In addition, the gripper is wear-resistant and has a longer service life than vacuum grippers. as
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