Siemens S7 - The application of 200 PLC in the pillow packaging machine

Siemens S7 - 200 PLC controller in the application of pillow packaging machine newmaker welcome to e hall hall 9 automatic packaging machinery exhibition hall pillow packaging machine, vertical packaging machine, quantitative packaging weighers, transparent film packaging machine, filling packaging machinery. 。 。 Introduction & # 8226; In recent years, China's food packaging technology got rapid development. On the basis of the introduction of foreign packaging machinery, the domestic machinery manufacturers through the digestion and absorption, development and innovation, make China's packaging machinery manufacturing level had the very big enhancement. • According to the mechanical structure of the packaging machine, food packaging machinery can be divided into vertical packaging machine and pillow packaging machine. As the name implies, vertical packaging machine packaging process from top to bottom, packaging of food types generally for particles, powder, liquid, such as salt, milk, etc in everyday life; Pillow packaging machine is flat packaging, packaging of food types generally for block, such as instant noodles, ice-cream, cakes and so on. Please see below: vertical packaging machine pillow packing machine in this paper, based on the pillow packaging machine. The principle diagram of the system ( Economical pillow packaging machine) The mechanical structure, Pillow packaging machine) This machine also includes the vertical sealing parts, the lateral film gluing system requirements: the & # 8226; Film roll diameter: 66. 88mm• The cutter diameter: 120. 00毫米• Cutter motor transmission ratio: 9:1 & # 8226; Membrane motor transmission ratio: 9:1 & # 8226; External cutter axis of rotation encoder 360 line & # 8226; Packing specification: bag length ( 50 - 500). mm• Packing speed: 150 bags/min & # 8226; Cutting accuracy: less than or equal to 2. 00毫米• The cutter motor power: 700 w & # 8226; Into the membrane motor power: 700 w design basis: the & # 8226; Pulse signal sent by a high-speed pulse output channel based on PLC controller, realize to the location and speed control of servo driver & # 8226; Using PLC high-speed counting channels for external encoder position feedback & # 8226; Cutter axis as the spindle, into the film as a driven shaft axis control & # 8226; Position detection using color code sensor, PLC after judging location, do simple position closed-loop control & # 8226; Design calculation method is derived: the & # 8226; Calculation of pulse output can meet the most demanding Rev x = 4096 units/revC = D PI = 66. 88 x 3。 14159265 = 210 mmvmax = Lmax PVmax = = 500 x 70 x 35000 mm/minPmax = Vmax/C x Z Rev / 60 = 35000/210 x x 9 x 4096/60 = 102400 Precision = C/Z/Rev = 0005 7 mm/unit derived conclusions: Precision 2 mm > Precision x 10 meet the conditions for PLC output frequency is 100 KHZ, biggest satisfied condition of software design based on approximation ( A) Compensation methods: & # 8226; Because the calculation process more troublesome, do not make detailed here. In all the different packing speed determines different pulse output frequency, each color code detection to the actual location of the compared with the theoretical position, according to the actual position and compensate the difference between the theoretical position, two over one thousand of the compensation according to the difference of position. • The location of the actual value is implemented according to the external encoders, detected in each color mark, record the actual value. Each package, a pack of cutter rotation week encoder records of 0-360 degrees, automatic reset after a cycle. Software design basis, 2) Quadrant judgment: the & # 8226; Due to the packaging machine belongs to economy configuration, servo position closed loop control, there is no search function. Because of this, the function of teaching is added to the software, which when making color film packaging, if change the new packaging specification, must carry on the teaching, the first color code to detect the location of the record, as the judgment of packaging process at the standard testing ( The theoretical position) 。 • Every time in the process of packaging color theory of the position of the detection and location of the difference in judgment, if the difference is greater than 180 degrees, film feeding motor to track compensation, otherwise, the motor speed of film, delay compensation. • Because the color label position when teaching value ( The theoretical position) Is random, can be in any quadrant of the 0-360 degrees. Because of difference calculation, involving the positive track or delay compensation problem, so the formula according to the specific circumstances in different & # 8226; Here using the first quadrant as an example to do a simple introduction: if 0
Shenzhen Coolmay Technology Co., Ltd. has famous reputation in worldwide.
To find an ideal of your need, please visit my site Coolmay PLC.
Lucky to know that you are not alone in the face of programmable control systems issue. Let Shenzhen Coolmay Technology Co., Ltd. be your selected plc manufacturers expert in providing first class to help you out.