In mechanical and electronic products applied in woodworking machinery of the sanding machine

Abstract: in this paper, the woodworking machinery of the sanding machine, for example, introduced in mechanical and electrical products in its comprehensive application on the device. The control system based on the platform of HMI and PLC and inverter and other automation products, achieve the technology upgrading of equipment and high efficiency and energy saving, reflect a automation products of high cost performance. The actual operation of this system shows that: in the product is stable and reliable, intuitive and simple operation, high control efficiency, worth industry peers reference and promotion. Key words: PLC; Frequency converter; HMI； RS485; Sanding machine. 1 introduction of the current our country's rapid economic development and modernization level unceasing enhancement, woodworking industry development by leaps and bounds. Especially in recent years as a pillar industry of national economy rapid rising of real estate makes people more and more high to the requirement of furniture, it stimulated the rapid development of all kinds of woodworking industry. In nearly a decade, woodworking machining manufacturing industry has experienced many control and automatic control technology reform. Many applications from the original mechanical control, gradually developed to the combination of the mechanical structure of relay logic control, but the traditional relay control is control efficiency is low, poor anti-interference and equipment failure rate is high, with the development of the automation control technology, has gradually replaced for the control of PLC controller and frequency converter. With the development of the woodworking industry, the corresponding more and more high to the requirement of woodworking machinery and equipment, the corresponding control difficulty is becoming more and more high, demand will become more and more high degree of automation control system, according to different equipment will be applied to different types of industrial automation products, customers need to select the equipment according to different control object for the building of the control system. Electrical machinery has already can provide customers with PLC controller, temperature controllers, counters, man-machine interface and frequency drives, servo drives, numerical control system and a series of products, can provide customers with perfect and reliable mechanical and electrical integration solutions. Based on the platform of product to build a set of advanced sanding machine control system, realize high work of sanding machine and electrical control, is worthy of reference for the industry and market. 2 technology analysis woodworking sander usually refers to the use of abrasive belt, emery cloth ( Paper) Sanding the surface of the woodworking machine. Belt type woodworking sander bring endless sand ring tension on two or three pulleys, drive abrasive belt as a continuous movement, a tension wheel also as a small become warped make abrasive belt transverse channeling move. Used in surface processing of sanding machine have a fixed or moving workbench. The sanding machine sheet used for polishing system in this paper, according to the location of the equipment can be divided into eight steps, namely: the rough milling - fine milling - swing sanding - swing sanding - the second coarse milling - second finish-milling - fixed sanding - fixed sanding. Device can automatic sanding requirement regardless of the length of the plate, and can adjust the length of the plate. 3 3 control system. 1 system of the system hardware configuration as shown in table 1, table 1 control system hardware configuration table control system block diagram is shown in figure 1, figure 1 control system block diagram 3. 2 equipment analysis ( 1) PLC programmable controller in the system used in DVP60ES00R2, ensure that the system has the capability of high dynamic response, and meet the requirements of the woodworking industry on cost control. Through the RS485 communication and the frequency changer, given through the network control frequency and reading processes all output frequency, the current and the corresponding alarm information. （ 2) In stage of VFDS - is used in the converter system EL series inverter. Every working procedure eight process configuration a 1. 5 kw inverter, coupled with a 2. 2 kw of conveyor belt inverter, nine were equipped with frequency converter. （ 3) This system friendly man-machine dialogue, touch screen operation panel is configured with a DOP - B05S100 touch screen operation condition is used to display and modify the electrical parameters of the process, convenient operation and system maintenance, improve the level of the equipment. 4 PC screen and function ( 1) Functional menu screen is shown in figure 2. Functional menu contains parameters, condition monitoring, manual operation, fault check function. Menu screen (figure 2 function 2) Parameter Settings. Each location of the inverter frequency by human input, the PLC through the RS485 transmission frequency converter; Through each station time Settings, can adjust the location of the wood sanding. Parameter Settings screen as shown in figure 3. Figure 3 parameter Settings ( 3) Manual screen, each station can be operated by manual control, easy to maintain, as shown in figure 4. Figure 4 manual ( 4) Condition monitoring screen, can monitor equipment operation state, through the RS485 reads the output frequency of frequency converter and current work on time. As shown in figure 5. ( 5) Alarm system, monitoring each workstation is normal, as shown in figure 6. 5 in the woodworking industry is a very bad environment, work environment had a great influence on the physical and mental health of workers, wood processing plants in growing Numbers are beginning to introduce automated processing equipment. The collaboration of equipment manufacturer of this kind of equipment is the guangdong area production companies, has a strong influence in this profession. System operation practice shows that: in the integration of mechanical and electrical products of strong ability and high cost performance of frequency converter running stable, safe and reliable, high efficiency, can fully meet the requirements of various business environment, will be popularized and applied widely in the woodworking industry.
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