Abstract: A sealing device incorporated in a packaging machine heat-seals a vicinity of a bag mouth of a packaging bag. Paired heater bars are disposed opposite each other so as to be openable/closable and hold the vicinity between them when closed, thereby heat-sealing the vicinity. A link mechanism converts rotation of an output shaft of a servomotor to an opening/closing operation of the heater bars. A storage unit stores seal patterns, each of which includes a sealing pressure applied to the parts and a sealing time period for which the parts are continuously held. A selection unit is configured to select one seal pattern. The output shaft is rotated by a predetermined closing angle according to the sealing pressure of the selected seal pattern to close the heater bars. The heater bars are maintained in the closed state for the sealing time period of the selected seal pattern.

Abstract: A vibrating device is incorporated in a packaging machine to vibrate packaging bags filled with articles. The vibrating device includes a tapping plate disposed below the bags, a servomotor having an output shaft, a selection unit selecting one of vibration patterns set according to sizes of the bags or types of the articles, an output unit delivering data of a rotation pattern of the output shaft, and a control unit controlling the output shaft according to the rotation pattern based on the delivered rotation data. When one vibration pattern is selected according to the size of the bag or the type of the articles, the control unit controls the output shaft according to the rotation pattern corresponding to the vibration pattern, so that the tapping plate connected via a link mechanism to the output shaft is vibrated up and down in the selected vibration pattern to vibrate the bag.

Abstract: A sealing device incorporated in a packaging machine heat-seals a vicinity of a bag mouth of a packaging bag. Paired heater bars are disposed opposite each other so as to be openable/closable and hold the vicinity between them when closed, thereby heat-sealing the vicinity. A link mechanism converts rotation of an output shaft of a servomotor to an opening/closing operation of the heater bars . A storage unit stores seal patterns, each of which includes a sealing pressure applied to the parts and a sealing time period for which the parts are continuously held. A selection unit is configured to select one seal pattern. The output shaft is rotated by a predetermined closing angle according to the sealing pressure of the selected seal pattern to close the heater bars. The heater bars are maintained in the closed state for the sealing time period of the selected seal pattern.

Abstract: A vibrating device is incorporated in a packaging machine to vibrate packaging bags filled with articles. The vibrating device includes a tapping plate disposed below the bags, a servomotor having an output shaft, a selection unit selecting one of vibration patterns set according to sizes of the bags or types of the articles, an output unit delivering data of a rotation pattern of the output shaft, and a control unit controlling the output shaft according to the rotation pattern based on the delivered rotation data. When one vibration pattern is selected according to the size of the bag or the type of the articles, the control unit controls the output shaft according to the rotation pattern corresponding to the vibration pattern, so that the tapping plate connected via a link mechanism to the output shaft is vibrated up and down in the selected vibration pattern to vibrate the bag.