Bottle cap airtightness detection device

Abstract

The utility model discloses a bottle cap air tightness detection device, and relates to the field of bottle cap air tightness detection, the bottle cap air tightness detection device comprises a case, a support plate, a pressing assembly and a positioning assembly, one moving rod moves, and the other two moving rods are driven to synchronously and radially move towards an air inlet through cooperation of a sliding block and a through groove in a transmission rod, so that the air tightness of the bottle cap is detected. A moving rod drives arc-shaped plates to extrude the side face of a bottle cap under the action of a spring and a limiting rod, the three arc-shaped plates are synchronously retracted inwards, the bottle cap is located above an air inlet, and the situation that the bottle cap is dislocated and consequently air tightness detection is affected is avoided; a cylinder drives a rotating rod to rotate to a vertical position through a U-shaped frame, so that a connecting rod drives a lifting block to move downwards; a toggle rod mechanism is formed by the rotating rod and the connecting rod, so that when the rotating rod and the connecting rod are in a vertical state, namely the pressing plate is driven to press the bottle cap, the mechanical locking effect can be achieved, and the sealing effect of the bottle cap is guaranteed.