The first paper bag machine paper bags are fixed-length sealed and cut. The positioning system is a fixed-length positioning system. Only the speed of the sealing and cutting action can match the speed of the bag feeding to meet the requirements of fixed length sealing and cutting; the other is the printing bag positioning system and printing bag. The positioning system is a positioning rod and must require that the position of each seal fall on the designated mark position.
When performing various sealing and cutting tasks, problems inevitably arise; that is, the length of luggage requested for each task may change, which will inevitably affect the initial value of luggage that we preset in the system. Moreover, since the interval S between the photoelectric eye and the seal cut of the paper bag mark is set to a constant value, the length of the bag is changed, which inevitably affects the relationship between the feed speed of the bag and the sealing and cutting speed .
Therefore, in order to realize the active positioning of processing, a certain functional adjustment must be made between the length of the bag and the interval S. But this is only used to seal and cut printed bags, but it makes sense when it can't seal paper bags. In the packaging production industry, composite thin bags used as packaging bags can be divided into two types: one is a paper bag, and the other is a printed bag (color bag). Photoelectric signal detection sensors are printed on the colored bags to identify other signs.
The active positioning system of the sealing and cutting machine actively checks the frequency of the sealing and cutting machine controlled by the main motor through the photoelectric signal sensor, and then converts the number of pulses to the number of pulses detected by another photoelectric signal sensor, and adjusts the feed of the stepper motor. Frequency to achieve change. The feed speed is suitable for the sealing and cutting movements of the main motor.