The basic principle of pillow-type packaging mechanism moving photoelectric automatic positioning system
The basic principle of pillow-type packaging mechanism moving photoelectric automatic positioning system
In the process of continuous feeding of wrapping paper on automatic packaging machine, forming bags, filling and sealing, due to the printing error of locating color mark, accidental fluctuation of machine operation and operation and other comprehensive factors, the conveying speed of wrapping paper is out of sync with the speed of horizontal sealing and paper cutting, resulting in the deviation of sealing and cutting position
Error, so need to be corrected at any time, continuous error compensation. The composite error is a variable, but because of the high quality and printing accuracy of packaging materials at a certain packaging speed, this error should be kept within a small range for each cycle of the test. So you can
The feeding speed and cutting speed are measured and compared periodically (once every two packets) by the photoelectric positioning system. If the wrapping paper is too fast, the positive error system gives a negative compensation, that is, the feed mechanism decelerates to compensate; If the wrapping paper is too slow, it is a negative error, and the system gives one
A positive compensation, so that the feed mechanism speed up. But given the compensation value can not completely eliminate the error, it may be overcompensated,
Maybe not enough. Even if the error is eliminated, it will occur again.
So pillow packaging machine design always makes the system to give a little too much compensation, given a slightly greater than the absolute error value of the compensation, artificially make it out of tolerance. When the measurement error is negative, an excess positive value is compensated. After the next measurement and comparison, there must be positive error. positioning
The system automatically compensates for a given negative value and then recovers the negative error. In this way, the positive and negative alternation keeps the error within a certain range. This way the paper cuts off and pulsates around the right place. The wrapping paper moves in and out to achieve continuous positioning
For & other; In a type & throughout; Automatic positioning mode. Because its compensation is beyond the clutch work, the mechanical feeding mechanism into the work of the design with the paper lagging effect to give, so the use of this principle positioning system is called ldquo; Brake advance and retreat ” Automatic photoelectric positioning system.
This is the basic principle of the continuous positioning system. The horizontal sealing and cutting speed, which determines the speed of the wrapping paper, is taken as the reference, and the paper feeding speed is adjusted to synchronize with it to control the sealing and cutting position error of the wrapping paper.
Pillow packaging machine structure characteristics
1) dual inverter control, the bag length is set and cut, no need to adjust the empty walk, one step in place, save time and save film.
2) text man-machine interface, convenient and fast parameter setting.
3) fault self-diagnosis function, fault display at a glance.
4) high sensitivity photoelectric eye color standard tracking, making the sealing and cutting position more accurate.
5) temperature independent PID control, better suitable for all kinds of material envelope.
6) positioning stop function, no stick to the knife, no cost of film.