AUTOMATIC CORRECTING DEVICE FOR HEAT SEALING POSITION IN BAG MAKING MACHINE AND METHOD FOR CONTROLLING THE HEAT SEALING POSITION

摘要

PROBLEM TO BE SOLVED: To provide a device for automatically correcting a bottom sealing position and a side sealing position in a bag making device, and to provide a method for correcting the heat sealing position.SOLUTION: Using an input means, "a reference value", "a determination distance", "the number of times of determinations" for determining the number of times provided for a requisite condition under which when a measurement value output from a camera unit deviates from a reference value over a successive number of times, the position of the sealing position is corrected, and "a correction value" for determining the amount of movement for correcting the position of the sealing body are set. The amount of displacement of a measurement value obtained by a camera unit with respect to a reference value is calculated. The amount of displacement is compared with a determination distance. Additionally, the number of times that amounts of displacement greater than a determination distance successively appear is compared with the number of times for determination. When the number of times that the amounts of displacement greater than a determination distance successively appear is equal to the number of times for determination, a servomotor is driven with a preset correction value, thereby moving each sealing body and thus automatically correcting a heat sealing position.