PLC application in the crowded molding machine

Application of PLC in extrusion molding machine newmaker welcome to e exhibition hall exhibition hall 3 PLC PLC programmable controller, PLC programming cable. 。 。 A, extrusion molding machine working principle to squeeze molding machine working principle is: the use of specific shape of the screw, the heat of the barrel in the rotation, will be sent by the hopper of plastic extrusion, plastic plasticizing evenly ( The molten) , through the nose and different shaped mold, plastic extrusion into the continuity needed for various shapes of plastic layer. In this article the application of is application in the production of plastic tubing industry. Extrusion molding machine generally divided into three stages, the first stage is plasticizing phase, the second phase is forming stage, the third stage is to finalize the design phase. 2, PLC controller product introduction motor co. , LTD.  Founded in 1992 by a group of engineers engaged in PLC controller design work for many years was founded in Taiwan. Launched in 1993, FBE and FBN series products, launched in 2003, FBs new series of products by the industry praise. This application is to upgrade FBE series PLC, according to customer feedback the FBE PLC has been running for more than 10 years, there are now part of the road is not sensitive to the temperature control requirements to upgrade. PLC in the complex high temperature, high dust, high electromagnetic pollution of the environment the normal operation of more than 10 years is enough to show the stability of our products. 28 MC host FBs - 24 MCR host system architecture 3. 1 the original electric control in figure 3. 2 original system control part of the composition of the main products of the functional specification: 1. Main controller: FBE - 28MC + 2. Digital output extension module: FB - 8.3 The analog output module: FB - 2DAS *24. Analog input and temperature control module: FB - 4AK24； 3. 3 after upgrading control part of the composition of the main product features specifications: 1. Main controller: FBs - 32MAR2- AC 2。 Digital output extension module: FBs - 8.3. The analog output module: FBs - 2DA *24. Analog input and temperature control module: FBs - 2A4TC *2； 5. Temperature control module: FBs - 16TC3. 4 of the upgraded system structure, system control program is introduced to squeeze molding machine work time is divided into three stages: that is: the plasticizing stage ( Plastic mixing, melting and homogenization) ； Forming stage ( Plastic extrusion) ； Finalize the design phase ( The cooling and solidification of plastic layer) 。 Is one of the most important in the first stage, the plasticizing stage, the temperature of the plasticizing barrel to keep constant, which is mentioned in this paper, the application, including the adoption of FBs temperature control module can be conveniently and the realization of the very accurate temperature control function. 4. Figure 4-1 part temperature control program is introduced 1 temperature control parts of the program through a simple FUN86 instruction to realize the temperature control of no. 12, this is enough to prove the advantage of FBS series PLC programming, the part is important to note that before the upgrade process configuration configuration is to use FUN85 command, as shown in the figure below. And FBS series program as long as in the I/O configuration Settings. Figure 4 - 2 FBe and FBs PLC programming the difference between a further advantage of the implementation of the program is when the temperature exceeds a certain limit when open the function of cooling motor for cooling, so we can better cooperate with the relevant operation function of PID control, can achieve good control requirements. Figure 4 - 3 overtemperature start cooling motor cooling 4. 2 inverter control part of the program is through two FBs - for the project 2 da module to set the frequency to frequency converter, by using linear transformation of FUN33 instruction with analog output module to realize the function of the frequency of the inverter output. Figure 4 - Figure 4-4 inverter frequency setting 5 host current display program of this part is the current through the analog output by frequency converter, the inverter output from the PLC analog input, through FUN33 instructions can easily realize analog conversion function. 4. 3 application in order to prevent FUN33 instruction cache form transformation of VSL, VSH and VML and set the value of VMH lost or forgotten Settings, and so on related issues, can be set via a form, so that you can write directly to the PLC, can be set easily. Figure 4 - 6 cache table set figure 5 - five, the debugging process 1 debugging process images into debugging equipment can normal operation, the scene of the temperature control effect is very good, customers on the control effect is very satisfied, and because of the inverter is too old, host current analog signal output is not normal, cause function cannot achieve. Six, the conclusion of PLC stable performance is well received by the customer, an electronic product in such a complex industrial field can work ten years have not fault, which is generally do not have the quality brand. So PLC provides five years of quality guarantee is a strong technical strength, FATEK brand worthy of your trust.
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