Hot runner injection nozzle and drive train

An injection nozzle (1) for an injection molding device, comprising:

• a nozzle head (2);
• at least one closure element (4) arranged inside the nozzle head (2);
• an actuator;
• and
• a drive train (3);
• wherein the actuator, the drive train (3), and the at least one closure element (4) are interconnected;
• wherein the drive train (3) is configured for moving the at least one closure element (4) in a first direction (a);
• wherein the actuator is configured for moving the drive train (3) in a second direction (b);
• wherein the drive train (3) comprises a cam mechanism (5) comprising a cam head (6), the cam head (6) including a cam head block (7);
• wherein per each closure element (4), the cam head block (7) comprises a bracket (8), the bracket (8) comprising at least one inlay (9);
• wherein the actuator is configured for moving the cam head (6) and the at least one inlay (9) together in the second direction (b),
• wherein per each closure element (4), the at least one inlay (9) includes a first drive surface (10) configured for engaging and driving a second drive surface (11) arranged at the closure element (4) at least during moving of the closure element (4) to a close position;
• and
• wherein per each closure element (4), the cam head block (7) comprises a third drive surface (12) configured for engaging and driving a fourth drive surface (13) arranged at the closure element (4) at least during moving of the closure element (4) to an open position.