Label applicator

A labeling device for a stretch film packaging machine, the labeling device comprising:

• a delta robot comprising at least two articulated arms, each of the articulated arms comprising a first arm section and a second arm section, which are articulated to one another, the articulated arms each being articulated at a first end to a robot base and at a second end to a platform of a pickup device movable to pick up a label, and the articulated arms each being pivotable about a respective axis of rotation at the robot base and configured to be driven by a respective motor fixedly mounted to the robot base,
• wherein the pickup device comprises a base plate and a plunger for picking up the label,
• wherein the plunger comprises a fixed portion that is mounted to the base plate and is not displaceable relative to the base plate in a longitudinal direction of the plunger, and further comprises a portion that is movable in the fixed portion in the longitudinal direction of the plunger and comprises a front end configured to pick up a label,
• wherein the plunger comprises a mechanical pressure regulator configured to break a negative pressure in the plunger, the negative pressure being for picking up the label, and
• wherein the movable portion of the plunger is displaceable in a direction of a longitudinal axis of the plunger through the fixed portion of the plunger toward the base plate to a retracted position, the movable portion of the plunger having an opening which is covered in a gas-tight manner by the fixed portion of the plunger when the movable portion of the plunger is in an extended position to pick up the label and which is not covered by the fixed portion of the plunger when the movable portion of the plunger is in the retracted position.