基于PLC注塑机控制系统的设计【含CAD图纸、说明书】
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含CAD图纸、说明书
含CAD图纸
CAD 图纸
注塑机设计【
CAD图纸】
CAD图纸】注塑机
设计【含CAD图纸
控制系统设计【
注塑机PLC
注塑机设计【CAD图纸
注塑机cad图纸
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外文资料翻译THE DEVELOPMENT OF INJECTIONWith the diversification of plastic injection molding machine is more and more big, the market demand of equipment upgrading also more and more quickly. Early machine is full hydraulic pressure type, because the environment protection and energy needs, and the application of mature servo motor and the price dropped substantially, with plastic diversified market demand is bigger and bigger, injection molding machine equipment upgrading also more and more quickly. Early machine is full hydraulic pressure type, because the environment protection and energy needs, and the application of mature servo motor and the price drop dramatically in recent years, the type of precision injection molding machine more, only two kinds of different characteristics of power, injection molding machines may find technical development direction.Hydraulic injection molding precision, complex shape of products has many advantages, it from the traditional single cylinder filling type, multi-cylinder filling type development of two plates, including direct pressure on two straight pressure as the representative, but its control technology, high precision machining, hydraulic technology is also difficult to master.The machine has advantages of type series, especially in the environmental protection and energy saving, due to the use of servo motor control precision injection, speed and stable, still can multistage adjustment. But all the life on the machine type hydraulic injection than all the hydraulic injection, must use the confidential guarantee accuracy with closed loop control servo valves, and servo valves, expensive cost rises.Electric hydraulic injection - which is integrated hydraulic and electric drive new machines, it incorporates the hydraulic injection performance and the type of energy-saving advantages, this combination of hydraulic power - has become a complex machine injection technology development direction. Molding industry is facing a rapid development opportunity, but the cost in injection products, electricity is according to the proportion of injection process equipment, the demand for oil pump motor power injection, the power equipment of 50-65, and energy saving potential extremely, design and manufacture of a new generation of energy-saving, becomes the injection molding machine urgently needs attention and solve problems.Using the machine synchronous signal and electric control system, according to the requirements of injection molding, electro-hydraulic proportional control system, simulation into load tracking control system, make the pump motor speed and injection molding machine work flow and pressure of the hydraulic pressure is directly proportional to the product of traditional quantitative pump into frequency variable pump, thus making the relief valve to minimize the oil flux, high energy loss and throttling traditional have high energy consumption of type throttling injection for upgrading the throttle pressure injection , saving energy saving of the main functions of injection besides, according to the characteristics of the energy-saving principle, also has the advantages of additional series, including: relieve, clamping, prolong service life; mechanical and mould Extended oil system (seal components etc.) use life, reduce maintenance frequency, save maintenance cost, To reduce noise and improve the working environment, The oil temperature system, cooling water significantly reduce can save 30% above, For motor has advantages, over-current, lack of protection equal, The original control mode and injection fuel unchanged. Upgrading machines will be for energy-saving, its investment ( injection molding machine is mainly inverter) should be in a year by saving electricity can be recovered or oil fee.Anyhow, the development energy-saving theory, injection of small investment, benefit, maybe in the future, frequency energy-saving injection molding machine manufacturing industry to become the new relationship.ABOUT PLC TECHNOLOGYProgrammable controller based on micro processor as - as the computer technology, automatic control technology and communication technology to develop a new industrial control device. It is simple in structure, convenient programming and high reliability etc, has been widely used in industrial process and the position of the automatic control. According to statistics, programmable controller is applied in industrial automation devices most kind equipment. Experts think, programmable controller will become the main means and industrial control equipment, one of the important basis, robot, CAD/CAM will become the three pillars of industrial production.In relay Control logic, and 3C (based on the Computer and Communication technology, combining constant development and improvement. Now from single sequence control, development scale to include process control, and the position control etc all control field.Automation system by use of various types, have a plenty of centralized control, have installed in the production of decentralized installed in every single device, although they are in high voltage circuit and heavy equipment in the form of electromagnetic environment, but bad for industrial production environment and design of control device, in the design and manufacture process using multi-level anti-interference measures and selected elements, it has stronger ability to adapt to bad industrial environments, the operation stability and high reliability, thus generally do not need to take any special measures can be directly used in industrial environment.High reliability is the key performance of electrical control equipment. Because of using modern large scale integrated circuit technology, adopting strict production process manufacturing, internal circuit adopted advanced anti-interference techniques, and has high reliability. Such as mitsubishi series production of F high MTBF 30 million hours. Some use redundancy of the CPU is the average time longer trouble-free. From the machine used for circuit, control system, and the same form of relay contact system, electrical wiring and compared to switch contacts have one hundreds and even thousands of fault is greatly reduced. In addition, with hardware failures function, malfunction can timely warning message. In software applications, users can also into outer device of fault diagnosis procedure, make system in addition to the circuit and equipment outside for fault diagnosis. So, the system has high reliability, I wouldnt be surprised.注塑机的发展随着塑胶制品多样化市场需求越来越大,注塑机设备的升级换代也越来越快。早期的注塑机都是全液压式，由于环保和节能的需要，以及伺服电机的成熟应用和价格的大幅度下降，随着塑胶制品多样化市场需求越来越大,注塑机设备的升级换代也越来越快。早期的注塑机都是全液压式，由于环保和节能的需要，以及伺服电机的成熟应用和价格的大幅度下降，近年来全电动式的精密注塑机越来越多，只有比较两类不同动力源注塑机的特点，才有可能弄清注塑机的技术发展方向。全液压式注塑机在成型精密、形状复杂的制品方面有许多独特优势，它从传统的单缸充液式、多缸充液式发展到现在的两板直压式，其中以两板直压式最具代表性，但其控制技术难度大，机械加工精度高，液压技术也难掌握。全电动式注塑机有一系列优点，特别是在环保和节能方面的优势，由于使用伺服电机注射控制精度较高，转速也较稳定，还可以多级调节。但全电动式注塑机在使用寿命上不如全液压式注塑机，而全液压式注塑机要保证精度就必须使用带闭环控制的伺服阀，而伺服阀价格昂贵，带来成本上升。电动液压式注塑机是集液压和电驱动于一体的新型注塑机，它融合了全液压式注塑机的高性能和全电动式的节能优点，这种电动-液压相结合的复合式注塑机已成为注塑机技术发展方向。注塑行业正面临着一个飞速发展的机遇，然而在注塑产品的成本构成中，电费占了相当的比例，依据注塑机设备工艺的需求，注塑机油泵马达耗电占整个设备耗电量的比例高达50%-65%，因而极具节能潜力，设计与制造新一代“节能型”注塑机，就成为迫切需要关注和解决的问题。利用注塑机同步信号及电气控制系统，根据注塑成型的工艺要求，将电液比例控制系统，模拟成负载跟踪控制系统，使油泵电机的转速与注塑机工作所需液压的流量与压力乘积成正比，将传统的定量泵改造成变频变量泵，从而使溢流阀的回油流量降到最小，无高压节流能量损失，进而将传统有高压节流的“耗能型”注塑机升级为无高压节流的“节能型”注塑机，节能型注塑机除了节能功能之主要特性外，依据其节能原理，还具有附加系列的优点，包括：减轻开、锁模冲击，延长机械和模具使用寿命；延长油路系统(密封组件等)使用寿命，减少维修次数、节省维护费用；降低噪音、改善工作环境；系统油温大幅降低，冷却用水量可节省30%以上；对电机具有过压、过流、缺相等多种保护；注塑机原有的控制方式及油路不变。将注塑机改造升级为“节能型”注塑机，其投资(主要是变频器)
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