Injection unit for an injection molding machine

Injection unit of an injection molding machine which is arranged movable relatively to a machine base of the injection molding machine in an axial direction, wherein the injection unit comprises:

• a base body having two axial ends at which a screw cylinder is arranged at one of the axial ends, wherein a screw is arranged rotatable and axially movable in the screw cylinder, wherein the screw is connected with a drive element at one of the axial ends which can rotate the screw and can also move it in an axial direction, wherein the drive element comprises a gear element which is movable in an axial direction as well as an actuator which is in engagement with the gear element and with the base body and which can perform a translational movement in an axial direction and wherein the base body is designed as a one-piece block which has a plate-shaped reception for the screw cylinder at one of the axial ends and has a plate-shaped reception for the actuator at the opposite of one of the axial ends,
• wherein
• the two plate-shaped receptions are connected via at least two connection sections, wherein a measuring element for measuring the stress state in axial direction is arranged at least one of the connection sections, wherein in the region of the measuring element the wall thickness of the connection section is reduced at least partially and wherein the measuring element comprises a strain gauge.