The first type of paper bag machine is the fixed-length sealing and cutting of paper bags. This positioning system is a fixed-length positioning system. It only requires the speed of the sealing and cutting movement to match the bag delivery speed to reach the fixed-length sealing and cutting request; the other is the printing bag positioning system, printing the bag The positioning system is the tracking of positioning, and the position of each request for sealing and cutting must fall at the designated identification position.
        When carrying out various sealing and cutting missions, we will inevitably encounter a problem; that is, the bag length requested by each mission may be changed, and this will inevitably affect the initial value of the bag length preset in the system.
        And because the interval S between the photoelectric eye for checking the paper bag identification and the sealing and cutting is a fixed value, the bag length is changed, which will inevitably affect the relationship between the bag feeding speed and the sealing and cutting speed. Therefore, in order to realize the automatic positioning of processing, it is necessary to make a certain function adjustment between the bag length and the interval S. But this is only useful for sealing and cutting printed bags, and has no meaning when sealing and cutting paper bags.
        In the packaging and production industry, composite thin bags used as packaging bags can be divided into two types: one is paper bags and the other is printed bags (color bags). The color bag is printed with other identifications for photoelectric signal inspection sensor.

        The active positioning system of the sealing and cutting machine actively detects the frequency of the sealing and cutting machine controlled by the main motor through a photoelectric signal sensor, and then converts the number of pulses to compare with the number of pulses checked by another photoelectric signal sensor, and adjusts the frequency of the feeding stepping motor to achieve the change The feeding speed makes it adapt to the sealing and cutting movement of the main motor.