In 20 PM controller application in packaging film punching machine

20 PM controller in packaging film punching machine application newmaker welcome to e hall exhibition hall 3 PLC PLC controller programmable controller, PLC controller programming cable. 。 。 Abstract: this article mainly introduced the movement controller 20 PM applications in food packaging film punching machine, involving its after cut control function and high-speed, high-speed capture function. Key words: 20 PM flying shear packaging film after cut high-speed capture some of the packaging film in the food industry have to punch, before packing or after the heat sealing, completely closed can contain a lot of air, does not favor the transportation. The original application is consistent packaging film and packing materials delivery speed, using a special kind of extremely fast cylinder to punch movement of packaging film. But due to the use of this cylinder movement is frequent, so it's easy to damage, maintenance cost is very high. And the cylinder of the order cycle is long, the price does not poor, is a big spending for many enterprises. In order to reduce costs, manufacturers need a simple and durable equipment replacement of drilling hole. In the packaging film punching machine used in 20 PM is excellent solution can satisfy this requirement. In the new packaging film punching machine use 20 PM ac servo motor control, drive the mechanical structure about sports. In sports, the middle parts of the packaging film absolute rest, at this time for cylinder punching operation ( FIG. 1) 。 Before and after using this structure equipment, which can realize send membrane does not stop, only the middle part of the packaging film stop effect. System consists of control system using a full range of products, the specific configuration is shown in figure 2. Control analysis of the device has two control points: first, make the mechanical movement parts to follow the speed of film, in order to realize the absolute rest, the use of electronic CAM after cutting function. Use color code signal to control the CAM motion or not, so the use of cycle CAM model; Second, punching location convenient adjustment. 1, after cutting function procedures used in the automatic DATA after cutting CAM mechanism. Automatically after cutting function is directive statements generated by two flying shear. Flying shear function statements define as shown in figure 3, figure 4 shows. In this device control, synchronous linear velocity is not the same, but the V1 V2 = 2 *. The first flying shears statement is set according to the above format. A second flying shears statements D102, D103 from shaft length is set to the first statement of negative, D111 set H8000 CAM curve, it can be used automatically to achieve two flying shear cutting function. Execute statements, the generated CAM curve as shown in figure 5. Figure 5 CAM curve aperiodic CAM control framework is shown in figure 6. Figure 6 aperiodic CAM control frame 2. High speed compared with capture because of the color code sensor signal is not to the position of the punch, so do not use color code signal as aperiodic CAM start signal. So the parallel shaft encoder signal received MPG1, set two high-speed object and a high-speed capture, and start the C204. Use color code as a high-speed signal acquisition, signal, after each color code signal to capture C204 current value. Then use C204 current value plus the number of pulses to delay, The punch position adjustment value) With two high-speed compared to control CLR1 conduction and shut off. Use CLR1 signal to trigger START0 again, to start the aperiodic CAM. High speed compared with capture Settings as shown in figure 7 and figure 8, shown in figure 9. A control program. Initialization parameters ( Figure 10. ) 。 2. Flying shear curve is set up, Figure 11 and figure 12) 。 3. High speed compared with capture set ( Figures 13, 14) 。 The conclusion is in good operation, regardless of the packaging film transmission speed fast, slow, can accurate punch. And on the text controller can adjust the punch convenient location. Customers are very satisfied with the effect of punch, ready to replace all similar equipment in production line.
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