Method and Device for Producing Laminated Cores

A method for stamping and forming lamination packs (15) of sheet metal laminations coated with a bonding varnish, comprising the steps of:

• providing a brake sleeve (2);
• providing lamination stacks (14) in the brake sleeve (2), each lamination stack (14) including a plurality of sheet metal laminations lying on top of one another and having outer edges resting against an inside of the brake sleeve (2), the lamination stacks (14) defining an axial channel (16);
• at least temporarily positioning an additional device (11) in the axial channel (16) defined by the lamination stacks (14);
• applying heat from the brake sleeve to the outer edges of the sheet metal laminations in each lamination stack (14);
• and
• applying additional heat from the additional device (11) to the lamination stacks (14);
• wherein the heat applied from the brake sleeve (2) and the additional device (11) causes thermal activation of the bonding varnish to bond the sheet metal laminations in each lamination stack (14) to each other to yield the lamination packs (15).

A device for stamping and forming packs of sheet metal laminations coated with a bonding varnish to yield lamination packs (15), comprising:

• a brake sleeve (2) having an axial stacking channel (5) for receiving lamination stacks (14) of sheet metal laminations lying on top of one another, with outer edges resting against an inside edge of the brake sleeve (2), the lamination stacks (14) defining an axial channel (16);
• and
• an additional device (11) at least temporarily positioned in the axial channel (16);
• wherein the brake sleeve (2) and the additional device (11) are heated in order to heat the sheet metal laminations in each lamination stack (14), activate the bonding varnish, and bond the sheet metal laminations to each other to yield the lamination packs (15).

A method for stamping and forming lamination packs (15) of sheet metal laminations coated with a bonding varnish, comprising the steps of:

• providing a brake sleeve (2) including a stacking channel (5), an inlet (3), and an outlet (4);
• providing lamination stacks (14) in the stacking channel (5) of the brake sleeve (2), each lamination stack (14) including a plurality of sheet metal laminations lying on top of one another and having outer edges resting against an inside of the brake sleeve (2), the lamination stacks (14) defining an axial channel (16);
• at least temporarily positioning an additional device (11) in the axial channel (16) defined by the lamination stacks (14);
• applying heat from the brake sleeve to the outer edges of the sheet metal laminations in each lamination stack (14);
• and
• applying additional heat from the additional device (11) to the lamination stacks (14);
• wherein the heat applied from the brake sleeve (2) and the additional device (11) causes thermal activation of the bonding varnish to bond the sheet metal laminations in each lamination stack (14) to each other to yield the lamination packs (15), and the additional device (11) comprises one or more of an inductor device, a radiant heating device, and an injection device for injecting a heated fluid in the axial channel (16).