A molding unit has a first molding station having a first mold having a first mold cavity, a second molding station having a second mold having a second mold cavity, a transfer unit having a support and at least a first core extending from the support. The transfer unit is arranged for moving the first core into a first molding position at the first molding station and into a second molding position at the second molding station. The first core extends into the first mold cavity when the first core is in the first molding position and into the second mold cavity when the first core is in the second molding position. A core actuation unit is arranged so that at least at the first molding station the first core is moved relative to the support from a first core position into a second core position when the first core is moved into the first molding position.

A molding unit has a first molding station having a first mold having a first mold cavity, a second molding station having a second mold having a second mold cavity, a transfer unit having a support and at least a first core extending from the support. The transfer unit is arranged for moving the first core into a first molding position at the first molding station and into a second molding position at the second molding station. The first core extends into the first mold cavity when the first core is in the first molding position and into the second mold cavity when the first core is in the second molding position. A core actuation unit is arranged so that at least at the first molding station the first core is moved relative to the support from a first core position into a second core position when the first core is moved into the first molding position.

A transmission device configured to transpose a drive movement of a drive into a linear and rotating movement of a first tool part of a forming tool of a forming device, the transmission device including a shaft, including a shaft axis; a first interface; a second interface, wherein the first interface is configured to connect the shaft with the first tool part at least torque proof, and the second interface is configured to connect the shaft with the drive at least by axial fixing; and a housing supporting the shaft is rotatable about the shaft axis and displaceable on a linear path parallel to the shaft axis, wherein at least one radial recess is arranged at an outer radial circumferential surface of the shaft, and at least one radial protrusion cooperating with the at least one radial recess is arranged at least at one guide element of the housing.