Application of programmable controller in automatic die-cutting machine (Part 2)

In the program:
X000 is the main motor start X001 is the oil pump start X006 is the die-cut paper X00D is the paper receiving rise X00E is the paper receiving fall X012 is the paper feeding rise X013 is the paper feeding table descend

Before any of the above power-on switches are turned on, M0001 is closed, and the normally closed point string of M0001 cannot be operated in each contactor circuit. Only when all switches are placed in the "OFF" position can the machine be operated.
2. Air pump control is unique: the air pump is an important part of the die-cutting machine to convey paper. The general method is to use a start control button and a stop button to control, but because there are too many buttons, the cost is increased, the position of the control panel is also limited Not easy to arrange. In this case, the following program was compiled to solve the problem. The important thing is that there is no extra component, only the functional requirements are realized by software. It is characterized by pressing the start button, the air pump starts, and press this button again, the air pump motor stops. If PLC is not used, it is more difficult to realize this function.
X015 is the air pump button M0010 is the leading edge differential X051 is the paper feed super high X018 is the air pump thermal protection X064 is the air pump timing switch Y072 is the air pump output

Process requirements, after pressing the air pump button, only when the suction nozzle is close to the paper surface can supply air.

Schematic diagram 2

Practice has proved that the above air pump control and control program is successful. 3. Paper falling stop (program 3): Due to the large die cutting pressure and high speed, the automatic die cutting and creasing machine often has loose plates and loose work. Once the processed work cannot be completely taken out, there will be a lot of Waste, causing waste. In addition, the equipment and die-cutting plate have all harms and no benefits. For many years, they have been discussing solutions. After using PLC, this problem is not difficult to solve. The procedure is as follows:

Schematic diagram 3

X002 is the electric bell X066 is the front regulation, this time is the paper in place detection time
X067 is the count adjustment, this time is the count detection paper time
X055 is the empty car switch, and paper entry
X060 is the count reflected light point switch, and the paper output M8017 is the second pulse signal (1 second on, 1 second off)

Through the above procedure, not only the paper falling phenomenon can be detected, but also whether the counting photoelectric switch is working normally or not. If it is not working properly, the LED (Y02D output) flashes.

With the wide application of PLC, the understanding of PLC is getting deeper and deeper. It is found that there are many internal functions and it should be continuously developed and utilized. This is to improve product performance and enhance product competitiveness without increasing costs. If any of the above is wrong, please ask the experts to correct me.

Author: Huli Yong Source: Tangshan Printing Printing Machinery Co., Ltd.

Safety is the most important point of outdoor swing and hanging chair, During the process of design, Sevenze`s swing sets has fully considered the perfect match of function and safety, selected elaborately and checked strictly each accessory. Our swing beds have experienced many physical tests to guarantee the safety, with easy assembly, fashionable outward and comfort use.


Swing

Swing Chair

Swing Chair,Outdoor Swing,Metal Swing Sets,Rocking Chair

SEVENZE INDUSTRAL CO.,LIMITED , http://www.sevenze.com

Posted on