Shanghai Daoqin Plastics Co., Ltd.

随 in blow molding technology （挤吹, 注吹, 注拉吹） 进步, especially is large type in molding equipment, more 层共挤 in molding process and equipment development, belt/tape its it in molding technology most new development, it 们包括 gas 体辅助 injection molding parts molding, semi housing/shell injection technology （shell technology）, molding, thermoforming molding technology and other. 1, in molding technology in plastics molding machine is in container molding main/primary equipment, world upper 80%～90% in container is using/adopting molding. in in plastics molding machine development in, in plastics molding machine is development most fast and most machine types. year, molding process technology most new development main/primary in 三维（3D） blow molding complex in container and large type packaging container upper. (1) 三维（3D） blow molding process 三维（3D） blow molding is less waste material or flash blow molding. in recent years, market for complex, 曲折 输送 pipe/tube made parts demand this technology 进步. 3D blow molding process usually is use 6～8轴 machine 械手 运送 type will its in blow molding injection molding parts mold inner 进行吹胀. (2) large type in blow molding technology large type in blow molding technology belongs to process. currently, using/adopting large type blow molding machine molding container main/primary is IBC桶（500～2000L） and 200L di L full 塑桶. large type in blow molding machine generally extrusion machine, machine 头, clamping plant/unit, plant/unit, type thick control system, products plant/unit, liquid pressure and strong/high low electrical control system. generally outer equipment mixed material system and material powder recycling system and other. its extrusion type methods, large type in machine can separation is material and extrusion 式, type structure also can separation is mono or more 层. currently, inner 200L di L full 塑桶绝 large more using/adopting mono material in machine made, lower 面就以该 type large type blow molding machine is 例, from its most is important several system formed introduction lower large type blow molding machine technology 进展. extrusion machine large type in machine processing raw materials generally is HMWPE, extrusion machine using/adopting design, its efficiency obvious 不足. 例如, use Domestic f150/25 extrusion machine processing HMWPE powder material, its can force is 250kg/h. therefore, large type in machine using/adopting belt/tape strong/high material structure and strong/high made cooling structure mono screw extrusion machine, tool has IKV structure extrusion machine. this type of extrusion machine in same long ratio conditions lower, its amount relatively design can improve/increase 50% above, extrusion amount stability, again add combined 理 屏障段 and mixing/compounding design, also can obtain very high quality. material machine 头 储 material machine runner main/primary has 3 types 形式, mono 层心形包络 runner, di 层心形包络 runner and di 层螺旋 runner. in machine machine relatively more using/adopting mono 层心形包络 runner, this main/primary is is for molding products requirements high. use for container quality requirements improve/increase, especially in large type container 方面, in combined strong/high degree issues, is also di 层心形包络 runner and runner design. di 层心形包络 runner therefore make melt combined strong/high degree improve/increase, is is can make extrusion type by 完整 熔 material 层 覆 cover/cap, 而不像 mono 层心形包络 runner that make type 坯 圆周存 in obvious combined 缝区. di 层螺旋 runner advantages is inner outer separation 别由两台 extrusion machine material, meanwhile material. especially is due to products inner can use non color material, make this type of runner non has competition force. for material in machine machine 头而言, amount its water 平 一 important 方面就 is its material speed degree. tube/pipe use 者希望换 material speed degree fast good, 但实际 upper is very difficult achieve. make is design machine 头, its material time 也往往 need several small 时. although year 出现 一 types can improves runner liquid pressure plant/unit, through it can achieve external 清理, 进而达 to accelerated material 目, plant/unit meanwhile belt/tape machine structure large, manufacturing and assembly degree requirements high and 实际清理时工人 劳动 ring and other issues. therefore, need add fast material speed degree, need is using/adopting positive design runner, amount decrease/reduce 滞留区域. clamping plant/unit in recent years, large type in machine clamping plant/unit 逐步趋 toward using/adopting sheet/plate 销锁式 machine 构. plant/unit 移模运动 is 由油缸 or electrical machine through filament achieve. due to using/adopting 滚柱直线导轨, make its tool has rigid property high, 运动精 degree high and light fast advantages. this type of sheet/plate clamping plant/unit clamping force is for or for can 调 销锁缸 achieve. is injection molding parts mold 安装, this 销锁缸 can simple from sheet/plate upper lower, through toward adjustment different injection molding parts mold thick degree. and versus also has types by is “胡氏 machine 构” 锁模 plant/unit, it principle 同销锁式 machine basic same, is can use in requirements clamping force more large clamping machine upper. in clamping plant/unit liquid pressure control 方面, in generally using/adopting ratio/proportion liquid pressure 阀, 以精确 control clamping speed degree, has products molding. type thick control in blow molding machine machine type thick control is in molding key/critical technology 之一, its function in full molding especially significantly. type thick control separation is toward control （AWDS） and toward control （PWDS）两 types 形式. currently large type in machine generally tool has toward type thick control function, its control from 24点 to 256点不 and other. toward thick control function is make material according to products different ratio toward obtain different thick degree, from ensure most products has comparison uniform thick distribution. its principle is according to 预设位置 as toward 运动, 以改变模头 开口 amount, from to 改变坯 thick 目. 2, more 层共挤 in molding technology more blow molding in container in food, chemical product, product, medical and other industrial packaging 方面 广泛 application, more 层共挤 in molding technology to fast speed development. due to more 层共挤 in molding machine complex property, in this and 先进国家 versus ratio also has relatively large 差距. although year inner has machine types launch, also very 不完善, need from below/following several add strong/high research development: research 适应一定 scope/range machine 头（模头）, meet/satisfy different material, different and machine 头直径 requirements; research combined packaging system, it can according to different raw materials made can can 允许 组 combined machine 头; research machine 械程序. 3, gas injection molding parts and water injection molding parts gas 体辅助 injection molding parts technology （GIT） through thick internal 掏空, can formed production thick 壁, products, in production complex 介质导 tube/pipe tool has advantages. due to gas technology can make products appearance surface property excellent, internal stress low, light high strong/high, but also can 节省材 material, shrink short production cycle, therefore non combined home appliances, furniture, automotive, office supplies, day use product and toys and other field/area products, its in pipeline made parts, large type structure parts and different thick degree 截面组 formed made parts. is shrink short cooling time obtain relatively small tube/pipe thick, use water gas molding in structure injection molding parts technology by is water injection molding parts （WAIM）. utilizing water injection molding parts product, thick more small, more light slip. currently world upper has very more machine in and technology has research development. in water injection molding parts molding process in, water 像柱塞一样推动 melt speed toward front 移动, in this process in, requirements water can 蒸发, water front melt can solid 化, requirements water amount need to 20～80L/min, more high. rigid 开始注 water 时, is water speed high and pressure large （会 in water 口附近 generate 漩涡而导致 products defect ）, usually need for water pressure separation grade control, rigid 开始时 pressure relatively low, rear again water pressure speed improve/increase to water 平. 4, semi housing/shell injection molding parts technology semi housing/shell injection molding parts technology upper is types process process combined, use injection molding parts methods production semi housing/shell, rear again will semi housing/shell welding 起 而 formed is in products. is ensure this types process process/workflow can very good 匹配, requirements injection molding parts semi housing/shell welding must non 常平整, milli warpage. generally need utilizing machine engineering （CAE） design soft parts optimization design, amount remove made parts cooling non-uniform generate internal stress. currently, use semi housing/shell injection molding parts technology production in product has automotive table/sheet sheet/plate upper various gas tube/pipe, machine gas tube/pipe and automotive and other. 5, injection molding parts mold sliding injection molding parts molding injection molding parts mold sliding injection molding parts molding method is Japan made development types used for manufacturing in products injection molding parts molding method. its principle is: will in products separation is 二, for separation separation injection formed semi formed product, rear will semi formed product and injection molding parts mold sliding for combined 位置. clamping rear, in products separation combined 缝处注入 plastics melt （第2次 injection ）, most rear to in products. and blow molding products versus ratio, technology molding product tool has surface quality good, dimensions degree high, thick uniform design degree large and other advantages. in manufacturing complex in products 时, injection molding parts mold sliding injection molding parts molding method and ultra- 声波 welding versus ratio advantages is: need will semi formed product from injection molding parts mold in 取出, can semi formed product in injection molding parts mold outer cooling formed products and degree decline, in addition also can welding process in generate local force 而引起 熔接 strong/high degree reduce. 6, 旋转模塑 旋转模塑 is injection molding parts mold in add hot inner 沿2 轴旋转, in injection molding parts mold inner plastics in injection molding parts mold surface, cooling rear can to and injection molding parts mold versus in products technology. 旋转模塑 advantages is molding process has pressure, from make products has internal stress, thick comparison uniform （ and blow molding and hot molding versus ratio ）, meanwhile, injection molding parts mold comparison simple. technology especially combined small amount production large type in products. most used for 旋转模塑 main/primary material is PVC糊 plastics, currently more more use polyethylene (PE), polypropylene (PP) and nylon. Common 旋转模塑 product has toys, function property furniture, container and 储槽（ most large can 达80m3）, automotive parts, 体育休闲 use product, 交通隔离标志 and other. year, 旋转模塑 product growth speed degree relatively fast, year growth rate is 20%, high other plastics products growth rate. 旋转模塑 can suitable plastics product types very less, is technology requirements plastics tool has relatively good heat stabilized property, meanwhile, due to need will plastics abrasion formed powder, make material price has improve/increase. in addition, very difficult use molding add strong/high methods improve/increase product rigid degree. 7, hot molding process technology hot molding is for extrusion thermoplastic property sheet/slice through series molding or tensile to products methods. specific is through add hot make sheet/slice soft 化, rear true or low pressure make soft sheet/slice pressure toward 整 模面, from to simple also products. this type of molding advantages is injection molding parts mold use low, injection molding parts mold made cycle short, injection molding parts processing investment use low, equipment investment small short time can 运转. hot molding hot molding need relatively more equipment, 包括烘箱, injection molding parts mold and 串联 辅助 equipment. true 空辅助包模 molding equipment is its in most simple types. in mono grade equipment 里, good sheet/slice by in frame upper, through 幅射（红 outer ） add hot make its soft 化. pressure in frame in hot sheet/slice by toward lower 拉（预 tensile ） to cold upper, upper large gas pressure, lower true 空, soft sheet/slice to strong/high pressure rear 就会紧贴 cold 凸模而 molding. this type of mono grade equipment also can belt/tape outer pressure hot molding, make add hot gas more sheet/plate toward sheet/slice 材, will sheet/slice pressure toward 凹模里, sheet/slice true tensile 并紧贴 toward 模壁, in process in gas pressure can high 达1Mpa. in grade equipment 里, add hot plant/unit in molding outer 面, hot sheet/slice in frame upper 进行 回输送. in hot molding in, usually ratio has relatively large tensile degree, demolding relatively difficult, made parts outer surface degree relatively 差, made parts injection molding parts mold inner surface degree versus for relatively large. di sheet/slice hot molding di sheet/slice hot molding features is molding fast, thick uniform, can made as di color and thick degree different products, 甚至材 material different products. in process upper can separation is di sheet/slice pressure hot molding and di sheet/slice true hot molding types. its in, di sheet/slice true hot molding process is: separation in injection molding parts mold inner true molding 出2 sheet/slice 材, again will 2 injection molding parts mold clamping, pressure make products combined formed is in products, has necessary, can in inner other parts. using/adopting methods molding type product has sheet/plate, 油箱, small 船, 门, pipeline, toys and other. and blow molding process versus ratio, use this type of methods production small type or in type product 时, efficiency more high. and 旋转模塑 versus ratio, this type of methods not only production efficiency more high, but also can suitable more more plastics sheet/slice 材, more extrusion sheet/slice 材.