Shanghai Daoqin Plastics Co., Ltd.

现代 plastics injection molding machine is 一 集 machine, electrical, liquid 于一体 典 type system, due to this formed has tool types type complex products, rear processing amount less, processing and other more type types material features,自问世以, development is speed, currently full world 80％ above engineering product made material use injection molding processing .

    传统 注 use 采般一 machine simple ring control, according to setting. made 控行进 value in equipment manufacturing process in, setting good 参锁如例, value force, ring time, temperature degree and other, machine in generate in add maintain. mold temperature degree can through hot add made temperature degree add maintain, temperature degree can hot add outer made plant/unit rate maintain. this type of control methods 结而然, mono resistant dry can force 差, control temperature degree comparison low more more, front 目. injection molding machine using/adopting is ring control, value amount in and setting value 偏差进行 control. ring use 采统系 made negative 反馈回路, resistant dry can force strong/high, injection 注, degree speed pressure, mold cavity temperature degree, mold cavity pressure, melt and other pressure and degree temperature in production process in dry 扰出现偏差, machine 适自 通则 device control system for dry 扰进行自动修 positive. method made this resistant dry can force strong/high, control degree high. more method made 控 进 is application machine control, 即构筑闭 machine 算计时实 ring control system. it 包括直接数字 control system （DDC）, machine 算计督监 made system （SCC）, dispersion control system （DCS） and multiple and other made grade type type.

    currently, commonly used injection molding has made machine types,即传统继 electrical appliances type, can 编程控 machine micro and type device made control type. in recent years, can 编程序 control device (简称PLC) property can high its 以, high property can features, in injection molding machine control to in application. is improve/increase injection molding machine control system water and quality,一 types relatively PLC, high more is in small type control system design can 编程计算 machine control device (PCC)应运而生. PCC集 formed standards PLC and industrial control machine features, tool separation more has as system, data and can force ratio PLC more strong/high large. use PCC组 formed made machine system,以 achieve 包括位置 control, speed degree degree temperature, made control, fault/failure control and 实时显示 and other injection molding full types more made, can large large improve/increase plastics products quality,经 high 提于利 has 济益.

    made machine inner 容

    currently machine 塑注, control system main/primary 包含两 large separation: made degree temperature is 统, for material 筒, melt and mold temperature degree 二; made 控行进 is control system, for injection molding process, degree speed, force pressure 位移进行 more grade 切换.

    in temperature its, in made degree control degree already to ±1℃. in made degree temperature precision injection molding upper has improve/increase product quality material and use rate, is 一项十 separation important indicators. in 程 工 add material in, temperature degree control main/primary material 筒, nozzle degree temperature tool and control. material temperature degree material surface add hot temperature material 于由, degree comparison thick, therefore hot electrical testing 点 键关常 non 择选, different testing upper temperature degree is has relatively. large therefore di 点平行 testing, in material surface 设时同处 deep and hot electrical 偶, will to comparison stability temperature degree has, temperature degree control degree. nozzle temperature degree 直接影 通体熔 响时 剪切 flow, for products quality has large 此因, nozzle temperature degree control degree requirements more high. and is degree temperature tool products mold cavity surface temperature degree, it 会显, film 充响影著 cooling and holding pressure process. for/regarding mold temperature degree can method made using/adopting control add hot temperature degree methods can made 控接直以 tool temperature degree. in front types methods in, add hot temperature 口出 体载 degree is control for 象, comparison simple, can meet/satisfy need temperature 般一求. temperature degree control degree requirements relatively high types use methods temperature degree control.

    injection pressure pressure 保, degree speed force, solvent back pressure is injection separation need amount 变 三 made, its control degree effect/influence products quality is relatively 代现.

进 injection molding machine tool 备 5 to 10 grade more and degree speed holding pressure and solvent back pressure control. generally through 位移/ speed degree 传感感传 force pressure, device device, ring injection control device and high 响应伺服 use make combined 配 阀, achieve injection molding process in solvent back pressure, and degree speed pressure 工况 精确 control. another comparison simple use is method 办 闭 month-on-month 例阀, through ratio/proportion 阀本身 阀 ring 闭 置位芯 control improve/increase control degree. however 阀芯位间 in is amount, therefore control degree 稍差.
    控程 模移 made most main/primary amount is clamping force, clamping force is again heavy stability molding cycle necessary conditions. 移模控该应 in made another important amount is 位置. 进先, 面方一 injection molding machine 不断追求 efficiency improve/increase, 移影接直 degree speed molding cycle, fast speed 移模本身 for decrease made speed more high requirements. 另一方面, due to 特殊开断不 艺工发 and 推广, mold control degree requirements 越 越 high.

    PLC and PCC

    自20世纪60 year can 台一第国美编程序 control device PLC问世以, PLC control technology already 走 30 year 尤, 程历展发 its is 随 近代计算 machine technology and micro electronics, 展发 术技 it already in soft hard parts technology 方面远远走出 序顺“ control ” stage/phase. can 编程计算 machine control device （PCC this table/sheet is 就）一 development trend new generation can control device.

    and PLC versus comparison, PCC is types made 控动运 toward 面, process control and control specialized control is, 统系准PLC, system and industrial machine 于点特 can property 一体 智 can control device. PCC most large type its in 点特似于 large type machine separation more 任务操 as more and application soft parts design. PLC任 mono use more large 务 时钟扫描 or 监控程序 处理程辑逻 身本序运算指令 and external I/O通道 状 new and 集采态. this 样处理, 直接导致 “ control 于赖依” degree speed application large small, this 一结果无疑 is and I/O通道 in property high made requirements versus 违背. PCC system soft understanding parts this issues, it using/adopting separation more machine use its made soft parts 运行平台, this application 程序 程 and 期周行运序 long short 无关, is as system 循. 定决期周 ring 由此, it will application 程序 扫描 cycle 同控 部 outer positive true made cycle difference 开, meet/satisfy true positive 实时. need made 控当然, this type of control cycle can in CPU运算 can force 允许按, lower front use 户 实际 requirements, 任意修改.

    PCC application more 由序程模 block formed, to project application soft parts development large very belt/tape 利. is this can according to control separation in different function requirements, 如运动 control, 数警报, 集采据, PID adjustment 运算, control and other, made separation made 程序模 block （任务）, this block 既数, 行运立独据间 also maintain versus 互关联, this separation block 模骤 独立编 made and debugging rear, can lower 载至PCC CPU in, in more as 操务任 调 degree tube/pipe lower 并行运行, achieve need made 控 目项求.

    PCC in made different block 模务任 mono 时, tool has active selection different 编程语言 意就 this, 点特味 not only in 常规PLC upper is 悉熟 们人梯形图, table/sheet can in PCC upper 而, use 沿续继且 use also can using/adopting more is high 效直观 high grade 语言(PL2000), it is toward full sleeve/set control 文本语言, 熟悉BASIC会员人术技 for it method has types versus 识 感觉, need made for it 求 描述 non 常简便, 直观. remove outer, PCC also parts soft use tool has formed “C”语言程序 can force, strong/high 供提而 from large data and can force.

    parts hard in 方面, PCC features is very significantly. 运 心核 its in block internal, PCC is its CPU配常于倍数 备规PLC large amount mono 元(100K?16M), this is strong/high and large use soft parts provide hard parts 基础.

PCC in hard parts upper also, in it is industrial various design use more 许口模 block, high frequency 脉冲, increase amount 式编码称, degree temperature, device heavy and ultra- 声波信号接口模 block and other. types will it 式 现场信号十 separation 方便 联入以PCC is core in made 控字, use can need for application system hard parts I/O通道以 mono or 路余十, 路数十路 is mono block, 进行数十点至点千 upper 点百数 expand and 联网.
    PCC in large strong/high in made function advantages, can control device made 控业工 and machine and DCS（ distribution industrial control versus 互术技）统 melt combined development 潮流, although this also is 一项技 light year is relatively 术, in its 越 越 more application areas in day positive it, 示出不 can low development force. for/regarding 注目, machine front application is PLC control system, 术技 随而然 进步, property 化, made product 需, long increase 断不求 injection molding machine control requirements 越 越 complex, 精越 越求 need degree high, as is more PCC control system 占步逐 will 必, 据一定 market 份额. 另一方面, for 化络网 未于 production demand, 显然, PCC control excellent tool more 统势, therefore, has versus 信, PCC control system will 注 未 in machine field/area 占据一席之.