METHOD FOR CONTROLLING TIGHTNESS OF JARS WITH FOOD AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2021 - IPC G01M3/24 

FIELD: glass industry.

SUBSTANCE: invention is used to control the tightness of metal and glass jars with food. The essence of the invention lies in the fact that dynamic deformation of the can lid is performed by a weight freely falling on the lid surface, followed by the determination of the amortization properties of the can lid by the parameters of the function of moving the freely falling weight in time. Registration of leakage and rejection of the can is carried out according to the amount of change in the amortization properties of the can lid. Adjustment of the initial position of the freely falling weight relative to the surface of the can lid, as well as measuring of the diameter, height of the can and the position of the can on the conveyor are performed. The device for monitoring the tightness of cans with products includes a conveyor equipped with a drive, a laser source, a photodetector, a sleeve with grooves, a can lid deformation element installed in the sleeve cavity, a deformation element holder in the initial upper position. The deformation element is equipped with a limiter for the lower inoperative position and a limiter for the initial upper position in the bushing cavity. The device contains an inductive sensor for linear displacement of the deformation element, a device for adjusting the initial position of the deformation element with a drive, a control unit connected to a conveyor drive, a laser source, a photodetector, an inductive sensor, a deformation element holder, and a device drive for adjusting the initial position of a deformation element.

EFFECT: invention is aimed at increasing productivity of monitoring the tightness of cans with products, as well as increasing accuracy and continuity of control.

2 cl, 10 dwg