Shanghai Daoqin Plastics Co., Ltd.

         extrusion machine is plastics industry in separation Common machine 械, maintain extrusion machine most 佳 工 as 状态, can maintain product stability property and improve/increase production efficiency. day use process in, difficult 免出现 production efficiency decline 情况, this 时候我们就 need for extrusion machine 进行清理 and 维护. lower small belt/tape large understanding extrusion machine Common methods.

        一, non machine method

        1, resin machine method

        该 methods is use resin, polyester resin or ring oxygen resin machine. generally use in new equipment machine or extrusion machine use time rear, due to separation material material in screw or upper 面胶化, material material extrusion speed degree slow, but also color product types color Color Difference relatively large 时, can using/adopting this type of methods.

        检查 machine upper material material is dry 净, 清理塑 machine as 台, setting need screw temperature degree, (remove POM, PVC, TPE, TPU outer temperature degree need high screw production temperature degree 30℃), temperature degree and back pressure to setting value. will screw material 射空, add 入清洗材 material, material fast speed --- slow speed --- fast speed ---- injection process 进行, attention/notes injection shot material color, 当发现材 material color 时手动按 screw again injection; heavy upper as process 3次. injection shot material 不出原 production products color or has material can is extrusion machine already dry 净.

        2, non resin machine method

        该 methods is using/adopting has 一定摩 scratch force, also easy powder 碎 稻谷, 玉米, 锯末, 卫生纸 and other material in extrusion machine add hot to positive extrusion temperature degree rear, utilizing this material in screw and between generate scratch force remove in screw and surface resin material. experience table/sheet 明, outer housing/shell hardness high, scratch force very large, versus ratio lower machine comparison 理想. use this type of methods machine rear, has necessary again 打开螺筒检查清 machine 情况, in positive 常情况 lower also need use resin machine material again machine rear, can positive product production.

         in understanding machine 时进行 extrusion machine 清理, advantages in can shrink short machine time;但也存 in 清洁不彻底 风险.

        二, machine method

        1, tool

         in understanding machine need use to 一 工 tool 跟清洁材 material 应包括: heat resistant sleeve/set, 护目镜, copper 刮刀, copper 刷, copper filament 网, hard acid, electrical 钻, machine 筒尺, and other. remove above this tool outer also need 准备:

        4, 5 block rod (直径< screw 直径)×(long degree < injection molding 行程);

        4, 5 木 block (positive 方形, 100 mm ×100 mm ×300 mm); by remove screw, 应放置 in block upper, anti loss bad screw.

        一 钳子;

         waste 棉布;

        一根 long rod or 竹棍(直径< screw 直径)×(long degree > add hot long degree);

        不 can solvent agent, chlorine ethylene

        2, methods

        清洗 extrusion machine 第一步 is material 斗底部 lower material 口; according to extrusion process 不一样(can can need lower 模头以 decrease/reduce extrusion machine front pressure high 风险), in 清洗时必 must 由一 人 achieve: as from control sheet/plate screw speed 跟扭矩, meanwhile extrusion pressure ensure system pressure high. 首先不 need lower 模头进行清洗, in extrusion material from processing resin full formed resin 时立即停 machine lower 模头, rear 进以便 make 残留 清洁 resin 流出. rear reduce screw speed 至15-25r/min, will this speed degree to front melt 流停止 flow is 止.

        2.1 screw 清洗

         machine method:

         machine method is will extrusion machine add hot to as temperature degree rear, use or launch methods, screw launch hot remove easy remove material material.

         steps 1: will screw 头拆开, use waste scratch screw 主体, can remove large separation resin 状沉淀 material; use copper remove resin material, or use 一 燃烧 device and other add hot screw, again use waste or copper remove its upper material.

         steps 2: use methods screw 头, ring, force ring and mixing/compounding ring, use copper 刷清刷.

         steps 3: screw cooling rear, use easy solvent liquid scratch has 油迹.

         attention/notes 清洗时, need abrasion parts surface; in screw front, in 螺纹处 uniform coating upper 一层二硫化钼 lubricated ester or silicon 油, anti 止螺纹咬死.

        火烤 method:

         use or remove solid in screw upper plastics, is plastics processing mono most can to is most has 效 办 method. (但绝 for can use 乙炔焰 清洁 screw. 乙炔焰 temperature degree can 达3000℃, use 乙炔焰 清洁请洁 screw will 不 会破 bad screw metal features, meanwhile also will obvious effect/influence screw machine 械公差) in screw use rear using/adopting 喷灯进行清洁. due to this screw belt/tape has processing in hot, screw hot amount distribution still is uniform.

        2.2 material 筒清洗

         steps 1: lower nozzle 头, material 筒头, use copper remove viscous in material inner surface material.

         steps 2: use waste 棉布包 in rod or long 竹子 端面, 清洗筒体 inner surface, in process in, will waste as dry more 换.

         steps 3: nozzle, especially is material and nozzle versus combined surface, process must small 心谨慎, scratch made parts surface 伤导致 resin 泄漏.

         steps 4: material temperature degree decline to 30～50℃时, use solvent agent lubricating wet waste use 第二步 in methods again 次清洗筒体 inner surface.

         steps 5: testing ensure inner surface is dry 净.

        3, 安装

         in for screw and machine 筒清理完毕之 rear, need positive will machine heavy new 组装起.

        3.1 screw 头 安装

         steps 1: will screw in and other high block block upper, in 键槽部 sleeve/set upper as 手柄.

         steps 2: in screw 头 螺纹处 uniform coating upper 一层二硫化钼 lubricated or silicon 油.

         steps 3: will scratch dry 净 止逆 ring, force ring, mixing/compounding ring (has machine has), sleeve/set screw 头.

         steps 4: use screw specialized sheet/plate 手, sleeve/set screw 头, direction 旋紧, formed 塑化组 parts assembly.

        3.2 material 筒头, nozzle 安装

         steps 1: use 吊车吊平塑化组 parts, fine scratch dry 净.

         steps 2: will 塑化组 parts slow material in, screw outer.

         steps 3: will material upper 穿螺钉 light and material upper for 齐, for positive, use copper rod light 敲, make combined 平面贴紧.

         steps 4: material 筒头螺栓, good material 筒头螺栓.

         steps 5: will nozzle 螺纹处 uniform coating upper 一层二硫化钼 lubricated or silicon 油.

         steps 6: will nozzle uniform material 筒头 螺孔 in, make surface 贴紧.

         will material 筒头螺栓拧紧 to combined 适 扭矩 value, need and other material 筒, material and its 螺栓达 to temperature degree same value.