| 摘要 |
PROBLEM TO BE SOLVED: To provide a lateral sealing device of a packaging machine that uses an ultrasonic sealing scheme and that minimizes an increase in size.SOLUTION: In a lateral sealing mechanism, a cylindrical film is sandwiched and ultrasonic sealing is performed along a direction that intersects a conveying direction while a first horn 51a and a first anvil 51b, and a second horn 52b and a second anvil 52a rotate. The first horn 51a is mounted on a first rotating body 50a in a state of being coupled to a plurality of vibrating elements 511. The second horn 52b is mounted on the second rotating body 50b in a state coupled to a plurality of vibrating elements 521. A securing member grips a horn unit, which includes the horns and the plurality of vibrating elements, on the forward and rearward sides in the direction of rotation of the horn assembly in the vicinity of the node of ultrasonic vibration and secures the horn unit to the first rotating body 50a and the second rotating body 50b, respectively. |
