Abstract: In a device for the automatic forming of packs of trimmed metal sheets for armatures of electrical machinery or the like, the pack (P') is formed by the controlled drop of a sheet stack (P) housed in a tubular magazine (1) open at the bottom. The pack is dropped against an underlying collection bottom (2) which is brought to a predefined distance from the lower end of the magazine (1). A tightening clamp (3,4) at the lower end of the magazine (1) blocks the stack (P) against a further gravity drop after its descent against the collection bottom (2). A subsequent first lowering of the bottom (2) to separate the pack (P') from the overlying stack, by virtue of a detachment device (22, 122), is followed by a detachment from the lower sheet (L') of the stack (P) of a possible sheet (L) which is mistakenly and temporarily held against the lower sheet (L') of the stack (P) but belongs to the overlying pack (P').

Abstract: In a method for the automatic forming of packs of trimmed metal sheets for armatures of electrical machinery or the like, the pack (P') is formed by the controlled drop of a sheet stack (P) housed in a tubular magazine (1) open at the bottom. The pack is dropped against an underlying collection bottom (2) which is brought to a predefined distance from the lower end of the magazine (1). A tightening clamp (3,4) at the lower end of the magazine (1) blocks the stack (P) against a further gravity drop after its descent against the collection bottom (2). A subsequent first lowering of the bottom (2) to separate the pack (P') from the overlying stack, by virtue of a detachment device (22, 122), is followed by a detachment from the lower sheet (L') of the stack (P) of a possible sheet (L) which is mistakenly and temporarily held against the lower sheet (L') of the stack (P) but belongs to the overlying pack (P').

Abstract: Apparatus for feeding bundles of laminations (PL) to a machine that processes or uses such bundles, particularly to a machine for making rotors or stators for electric machines, transformers, or the like, and having a vertical feeding duct (1) into which the vertically oriented bundles of laminations are introduced in sequence from above. A movable grasping and transferring device (10, 11) with one or more permanent magnets or electromagnets cyclically takes a bundle of laminations (PL) from a stationary or movable magazine (3) located in a withdrawal station and conveys this bundle co-axially over the opening of the feeding duct (1) of the machine, so as to set the bundle into the duct.