Patent ID: 11925190
Assignee: PACOTRADE AG
Field: Food chemistry (Chemistry)
Classification: CPC A  B  F | IPC A  B  F

Claim 0:
1. A device for shredding frozen food products provided in block form with a tool (2) for shredding at least a part of the frozen food products block, wherein:
the tool is coupled to one end (16) of a rotatable shaft (6), which during intended operation of the device rotates the tool about an axis of rotation (X) and advances the tool along the axis of rotation (X) in a direction (S) towards the frozen food products block, thereby scraping off layers of food from the frozen food products block;
coupling of the tool (2) on the end of the shaft (16) is designed in such a way that the tool (2) can be removed from the end of the shaft (16) without other tools and can be recoupled to the end of the shaft (16) as intended;
the tool (2) when coupled to the end of the shaft (16) as intended abuts axially against the end (16) of the rotatable shaft (6) and is thereby held in a force-locking manner on the end (16) of the rotatable shaft (6);
the tool (2) when coupled to the end of the shaft (16) as intended forms a rotational form-lock in said tool's intended direction of drive rotation with the end (16) of the rotatable shaft (6) for transmitting drive forces from the shaft (6) to the tool (2),
the device comprises a tool detection device (17, 23, 24) by which it can be determined whether a tool (2) is arranged at the end of the shaft (16) as intended or not;
the coupling of the tool (2) at the end of the shaft (16) is designed in such a way that the tool (2) which is coupled to the end of the shaft (16) as intended is held at the end of the shaft (16) by magnetic force; and
wherein the tool detection device (17, 23, 24) comprises a Hall sensor (23) with associated evaluation electronics, by which, at least in a certain axial position of the shaft (6), different characteristic magnetic field strengths can be distinguished between the tool (2) being coupled to the end of the shaft (16) as intended and the tool (2) not being coupled to the end of the shaft (16), respectively, for determining whether the tool (2) is arranged on the end of the shaft (16) as intended or not.