Shanghai Daoqin Plastics Co., Ltd.

         year, soft tube/pipe and pipe/tube production in amount and control technology, control 方面进行 a large amount of investment, improve/increase in quality control water 平, process stability property reduce cost. in, has control system in amount plant/unit already formed is extrusion production standards 配置. use to equipment has amount 头, can amount inner 径, outer 径, degree, rate, and most good can in extrusion process in amount product degree (viscosity very high solid process in melt formed “垂挂”), not only 限于此. use amount system according to application areas different using/adopting different technology. for and innovation amount technology review, discussion it in extrusion production in pros and cons.

         soft tube/pipe and pipe/tube 直径测 amount technology

         soft tube/pipe and pipe/tube product 直径 测 amount generally using/adopting types already separation formed methods, separation is “扫描 system ” and “线 property CCD传感 technology ”.

        ◆扫描 system

        扫描 method is will light through 一 旋转镜面 or 旋转盘 for amount 区域进行扫描. in 旋转镜面 and light device between 放置两 透镜. 第一 透镜 make light 束几乎平行 穿 测 amount 区域, 第二 透镜则 will light toward light 敏探测 device upper. by product 置于两 透镜间, in amount inner 进行扫描时 for light generate effect/influence. comparison light through 整 测 amount 区域 需 time and light 扫描整 product surface time, can 计算出 product 直径. in this type of lower, time and other 价于直径(图1). amount speed rate 取决于镜面旋转 speed degree. use more has improve/increase amount speed rate. this requirements 镜面必 must to full surface processing degree. usually 会进行 more amount, obtain combined 理 精确 degree.

        ◆线 property CCD传感 system

        线 property CCD传感测 amount technology main/primary has types. types methods is utilizing optical device (透镜组) make light poly in 一 线 property device upper. through material anionic 影图像 in dark tube/pipe, can 确定直径 large small. this type of methods advantages is 无需移动部 parts, 但透镜组 cost relatively high (图2).

        第二 types is can methods, use light high separation rate property CCD, through 计算衍射 strip/profile 纹 确定直径. this type of methods amount speed degree non fast, to selection property CCD传感 device made. types methods advantages is 省 昂贵 透镜组以 and 移动部 parts.

        扫描 and property technology main/primary difference in 于, property CCD传感 technology 依靠数字化 methods, need 移动部 parts, therefore tool has more high property, can heavy property and amount speed degree. property device amount in 两三 平面 upper amount 直径. it can amount is 0.05至500mm scope/range inner various 材质 不 transparent or transparent material parts. another, certain type amount speed degree can high 达5000/轴/秒, therefore is 探测团 block and shrink phenomenon can tool.

        直径, thick and rate amount technology

         due to amount 直径不 can meet/satisfy requirements application, soft tube/pipe and pipe/tube production need using/adopting also can amount product thick and rate amount system. remove quality control and process optimization, plastics material reduce cost 同样十 separation important. 举例 说, using/adopting is ultra- 声波 technology. this type of methods combined mono product thick basic amount, due to its function and for material features, plastics temperature degree and combined 介质 依赖, tool has property. currently, X light technology can ensure obtain product parameters amount 结果, 而不会受 to ring or material effect/influence.

        ◆ ultra- 声 technology

         ultra- 声 technology separation suitable for soft tube/pipe and pipe/tube in quality control. ratio 如, ultra- 声 technology can used as composite/compounding pipeline in retardant aluminum 质层, therefore can suitable for 此. amount soft tube/pipe 时, ultra- 声信号 in very large degree upper by and 橡胶材 material absorption, therefore can provide can 靠 测 amount 结果. but also, more 层橡胶 soft tube/pipe generally has reinforcement material, it 会转移 ultra- 声波回声, make amount method 进行. ultra- 声波测 amount usually in water in achieve, its in, water by used as 声音传播 耦 combined 介质. ultra- 声波 传播 speed degree, must 进行精确 temperature degree 补偿, according to temperature degree and material 计算偏心 rate. this type of technology need 进行校准. another, has will ultra- 声 technology and outer heavy force system versus combined, can 估算出壁 thick.

        ◆X- light technology

        X light technology using/adopting formed principle. X light technology for material has made, need combined 介质. this type of technology 不受材 material temperature degree 局限, therefore can will X light amount equipment 直接结 combined to extrusion production upper, need outer measures, 也无需校准. can in extrusion 头(hot amount) rear 面, can in production 线末端(most quality control). through 4点 in amount, 仅需一台 equipment can obtain thick, rate, inner outer and degree amount data. system can used for most more different material amount, amount value can pipe/tube / pipeline 截面 形式 achieve 数字化 or 图形化 实时显示, let use can 完美 进行 extrusion tool for in. in most small value meanwhile control production speed degree or extrusion machine speed (RPM), this for/regarding achieve most high efficiency is key/critical. this 样, can ensure soft tube/pipe quality. in 另一方面, control most small value can ensure consumption 必需 材 material. X- light technology suitable for is 0.65至270 mm product. for X light technology safety property is has according to, is low can amount 辐射没 has related property. upper, 当人们乘坐 from 纽约飞 to method 兰克福之 type 航班时, to need high very more.

         large type plastics pipeline amount technology

         for/regarding used for construction and 公共服务 field/area 120mm above large type plastics pipeline amount, upper technology suitable. this technology in function (ultra- 声), cost, amount scope/range, 周边测 amount amount (X light)以 and amount upper (激 light)都存 in property. currently, used for quality control more new technology already in testing in. it using/adopting 瞄准材 material 太赫兹脉冲激发 high rate light light. through material inner, outer 层边缘反射 脉冲 确定壁 thick. use this type of technology in amount thick and high retardant material 如PVC时也 is in 局限. another, light device resistant property has 限, cost 昂贵.

        ◆ mm 波（Millimeter waves） technology

        雷达 technology FMCW(调 frequency 连续波) is used for dimensions amount and lower degree 记录 一 types cost large is reduce innovation property technology. this system as 脉冲处于亚太赫兹脉冲 scope/range inner, it in automotive field/area used for 距离测 amount already has time. it using/adopting semi technology, price comparison 实惠, in use in lifespan 不受限. in 80 to 300 GHz selection scope/range inner, has plastics material can 穿透, absorption rate low, therefore can 测 壁 thick. has or 两 连续旋转收发 device in pipe/tube 移动时, 会持续收发调 frequency mm 波. types methods is, use system through 两 接收 device in 四 点 upper selection property amount thick and pipe/tube inner outer 径. if need tube/pipe 周完整测 amount thick, need use 旋转测 amount 头. this type of lower, can 精确测出并显示 lower degree. amount methods application plastics material front rear 端边界层信号反射 time 差. amount degree to micron, amount speed degree is 500次/秒. mm technology can 沿 完整 周 long, 精确测 amount 120至2500mm product. need combined 介质, 且不受 temperature degree or plastics material effect/influence. another, amount system can adjustment 并适应挤塑材 material features, use need 校准. but also, technology is machine provide and temperature degree control 信息, therefore amount value can ensure used for optimization property, most large degree reduce thick.

         summary

        随 for soft tube/pipe and pipe/tube production quality requirements improve/increase, non bad property testing (NDT) for plastics pipeline extrusion quality 进行精确, can control 变 尤 is important. in addition, high use material reduce cost is factory tube/pipe focus/key point. amount and control system can testing and control important product parameters. therefore, soft tube/pipe and pipe/tube production can selection tool has different function and multiple applications various technology.

        激 light technology can for 0.5至500mm scope/range inner tube/pipe 径进行 can in amount. another, X light amount system can amount high 达270mm product thick and degree. meanwhile, market upper 也出现 基于 mm innovation technology used for in production upper amount tube/pipe high 达2500mm large type plastics pipeline. technology can use 精确测 amount use different type type material made formed large small pipe/tube dimensions and lower degree. therefore, production to 底应该 using/adopting types amount technology, 取决于 application areas, and use 户基于 quality 保障, process optimization, cost and other for amount and control requirements and other.