In the application integration automation products in the plastic molding machine

In application integration automation products in the plastic molding machine in shenyang mechanical and electrical TBS cheng-zhi sun welcome to e hall exhibition hall 3 PLC PLC programmable controller, PLC programming cable. 。 。 Abstract: this article mainly introduced the sets of automation products in the plastic molding machine control system application, good integration mainly embodies in automation products integration application in equipment electrical control system of high cost performance, outstanding in mechanical and electrical products technology integration plan advantage. Key words: PLC, HMI communication RS - 485 preface: nowadays plastic products has been widely used in industrial and agricultural production and public life numerous industry field, plastic products, relatively low cost, some ways can completely replace metal products used, performance is also no less, daily life a lot of people use the basin, barrel, bottle and other goods are plastic products, plastic mattress products introduced in this paper is also a necessity in people's lives, market demand and broad prospects. The raw material production is completely non-toxic harmless chemical raw materials, the price is relatively expensive, also belong to the new plastic mattress mattress products, comfortable and durable, warm in winter and cool in summer, not bred worms, service life is long, so the plastic mattress products belongs to high-grade mattress products, much higher than the traditional palm mattress, is widely used in southeast Asia countries and regions, the domestic market has just started, along with the social development and technological progress, believe in the near future will gradually replace plastic mattress palm mattress. Control system technical scheme configuration: see the table below for the above form only enumerate control system main components, low-voltage electrical appliances are also included in this ( Low voltage circuit breaker, electromagnetic contactor, electromagnetic relays, buttons, lights, etc. ) , detection sensor ( Proximity switch, trip switch, etc. ) , inverter communication cable, etc. , here are not here. Control system principle block diagram were briefly introduced: plastic mattress molding machine control system adopts in man-machine interface as master station monitoring equipment, DOP - make full use of the man-machine interface A10THTD1 three communication, man-machine COM1, RS232） Connection under a PLC controller COM1 communication port, communication exchange process parameters data; The man-machine COM2, RS485) 12 sets of temperature control table connection head control system, man-machine COM3 ( RS485) Connection between a host control system 11 sets of temperature control table, man-machine interface temperature SV value can be set different control area, display temperature PV value; PLC communication mouth COM2, RS485) Communication frequency converter, PLC communication written to inverter frequency, frequency converter given start stop command, read the actual output frequency; Man-machine interface to set target speed motor, read the actual motor speed. Molding machine control system principle block diagram: plastic mattress technology brief introduction: plastic mechanical parts of the mattress molding equipment into the nose section and the host parts, chemical raw material and adding the nose section material hopper mixing heating, after under proper temperature control process requirement, the nose nozzle processing to produce thin cylindrical plastic wire diameter, according to the needs of different specifications of products, mould replacement can change the diameter of the cylindrical plastic wire, a large number of plastic cylinder wire transmission to the host part of the continuous, host part of the different regional temperature control, mold processing, plastic wire formation thickness, width of plastic cylindrical wire network mixed plastic molding products, again according to the set of cutting length cutting, which can produce different length, thickness and width of plastic mesh mattress products. Man-machine interface control program are briefly introduced, mainly divides into the host temperature control, temperature control, frequency conversion motor speed control, common picture, such as motor control, inverter parameter Settings for different regional temperature control of the machine and the plastic molding speed control requirements, as well as monitoring equipment process parameters. PLC controller control program are briefly introduced, the PLC controller control program is mainly divided into the following sections: 1, the analog processing: accept the nose 2 analog signals in control cabinet, after mathematical transformation, 1 way as motor rotate speed for real-time numerical dc speed regulating system, analog output 1 road to the nose ABB dc speed regulation system, control cabinet as speed for a given command; 2, temperature control table start stop control; 3, the cutting control program, according to the set length is different, different pneumatic components combination action achieve plastic mesh molding products fast cutting control; 4, inverter communication control: including the inverter start, stop, command, set the linear velocity ( m/min） Converted into frequencies for a given value ( Hz） , read the inverter output frequency ( Hz） Converted to motor running speed ( m/min） Numerical values. 5, fast transmission control, the cutting action after the program execution. Conclusion: the plastic mattress molding machine control system combined with HMI, PLC, frequency converter, temperature controller, such as automation products, for customers to develop a set of stable and reliable production line system, recognition and use of the unit by the customers, the success of new product exploitation, site visit customers promptly signed the letter of intent, in to buy a set of equipment for subsequent similar products production has laid a solid foundation, again proved zhong da dentsu customers trusted partners. Author introduction: cheng-zhi sun engineer at Yu Zhongda dentsu co. , LTD. , shenyang mechanical and electrical TBS. Reference: 1, in DVP - PLC application technical manuals program article; 2, in DVP - PLC application technical manual special module article; 3, in DOP man-machine interface application technical manuals; 4, in DTB series temperature controller applied technical manuals; 5, as VFDS - B series of ac variable frequency drive manual.
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