Shanghai Daoqin Plastics Co., Ltd.

 ◆1. rigid machine product 跑披锋, production time rear product short shot causes and solutions:

rigid machine injection molding machine material tube/pipe inner due to add hot time long, viscosity low, flow property good, product easy 跑披锋, production time rear due to 熔胶不断 hot amount belt/tape 走, formed 熔胶不足, viscosity large, flow property 差, make product short shot. in production time rear, improve/increase material tube/pipe temperature degree solution.

◆2. in production process in, product short shot, has increase large pressure and speed degree 都无效, is what? solution methods?

is is production in 熔胶不断 hot amount belt/tape 走, formed 熔胶不足, viscosity large, flow property 差, make product short shot. improve/increase material tube/pipe temperature degree solution.

◆3. product causes and solution methods:

product is due to non-uniform, formed product pressure 不匀, make product 椭圆, using/adopting 三点入胶, make product uniform.

◆4. precision product for mold requirements:

requirements mold material rigid property good, elastic deformation small, hot property small.

◆5. product resistant acid experiment/testing 目:

product resistant acid experiment/testing is is testing product internal stress, and internal stress force 点位置, 以便消 remove product internal stress.

◆6. product in metal parts force easy cracking causes and solution methods :

product in parts, in 啤塑时 due to hot melt adhesive to cold parts, formed internal stress, make product strong/high degree decline, easy cracking. in production 时, for parts preheating 处理.

◆7. mold gas combined property and selection methods:

mold gas combined 理, non 但起不 to gas 效果, 反而会造 formed product deformation or dimensions 变化, therefore mold gas need combined 理. selection mold gas 点, in product most rear 走满胶 方 and product gas 烧 方开排 gas.

◆8. product easy causes and solution methods:

product easy is product use water material and material more formed product easy 脆裂, or is material in material tube/pipe inner time long, formed material aging, make product easy 脆裂. increase new material ratio/proportion, decrease/reduce water material recycling use 次数, generally can ultra- 三次, 避免胶 material in material tube/pipe inner long time 停留.

◆9. add glass fiber (GF) product easy 出现泛纤 causes and solution methods:

is due to temperature degree low or mold temperature degree low, pressure 不足, formed glass fiber (GF) in inner can and plastics very good combined, make 纤泛出. add high temperature degree, mold temperature degree, increase large pressure.

◆10.进 material temperature degree for product effect/influence:

进 material temperature degree high or low, 都会造 formed machine material unstable, make add material amount unstable, effect/influence product dimensions and appearance.

◆11. transparent product has causes and solution methods:

transparent product has is is product inner cold formed, or material inner has 灰尘造 formed. improve/increase temperature degree, add cold material 井, raw materials attention/notes 保存, anti 止灰尘进入.

◆12. what is injection molding machine injection shot can force?

injection shot can force PK= injection shot pressure （kg/cm2）× injection shot 容积（cm3）/1000 

◆13. what is injection molding machine injection shot force?

injection shot force PW（KW）= injection shot pressure （kg/cm2）× injection shot rate （cm3/sec）×9.8×100%

◆14. what is injection molding machine injection shot rate?

injection shot rate V（cc/sec）=/4×d2× d2 material tube/pipe 直径 : material density

◆15. what is injection molding machine 射胶推 force ?

射胶推 force F（kgf）=/4（D12－D22）×P×2 D1: inner D2: active outer P: system pressure

◆16. what is injection molding machine pressure?

射胶 pressure P（kg/cm2）=[/4×（D12－D22）×P×2]／（/4×d2）

◆17. what is injection molding machine can force?

塑化 can force W（g/sec）=2.5×(d/2.54)2×(h/2.54)×N×S×1000/3600/2 h= screw front deep （cm） S= raw materials density

◆18. what is system pressure? and injection molding pressure has what is the difference?

system pressure （kg/cm2）=油 pressure in setting most high as pressure, injection molding pressure is injection molding 时 实际 pressure, 两者不 versus and other.

◆19. injection molding machine liquid pressure use requirements :

（1）适当 viscosity and good viscous temperature property can

（2）良 good lubricated property and anti property;

（3）良 good chemical stability property, easy gas formed 胶质;

（4）搞 foam property good;

（5） for machine parts and plant/unit property need small;

（6）燃点（ flash point ） requirements, solid need low.

◆20. liquid pressure viscosity for injection molding machine effect/influence?

当 system as ring temperature degree relatively high 时, using/adopting relatively high viscosity 油, 反之, using/adopting relatively low viscosity 油, system as pressure relatively high 时, using/adopting viscosity relatively high, is in high pressure, relatively difficult, is main/primary issues, 反之, system as pressure relatively low, using/adopting viscosity relatively small 油, liquid pressure system as parts speed degree high 时, liquid speed high, this pressure loss will increase, 而泄漏 amount versus for decrease small, using/adopting viscosity relatively low 油, 反之, as parts speed degree low 时, using/adopting viscosity relatively high 油.

◆21. setting:

松退 positive 确位置= 胶圈移动位置+ screw 越位距离

◆22. 松退位置 setting important property:

松退位置 setting large, formed material oxygen, make material oxidation and generate bubbles. setting small, make material inner pressure large, force high make material separation understanding, 射嘴流涎. 位置误差不 can ultra- 0.4mm.

◆23. 熔胶位置 setting:

熔胶位置= product weight /（ most large 行程/ most large amount ）

◆24. gas injection molding main/primary advantages （GAM）:

can thick type material 芯部, made formed pipe fittings, can 节省材 material, shrink short cycle time. in injection molding in using/adopting gas can make pressure uniform distribution, plastics cooling and solid 化时, gas can through for plastics shrinkage 进行补偿. reduce products internal stress, from improve/increase outer stability property, remove deformation and warpage phenomenon.

◆25. active outer in small,两头 large issues?

due to in hot product shrinkage 不均衡,造 formed active outer in small,两头 large. in can using/adopting dispersion hot fast copper material 做, mold in product in separation gas.

◆26. screen printing rear cracking issues:

due to product surface in force,造 formed screen printing rear cracking. increase mold temperature degree, decrease small force; can use methods remove force.

◆27. 眼镜架, water easy issues:

射胶 pressure and holding pressure pressure large, water 口边残存 internal stress,造 formed product easy 断.尽 amount decrease small pressure and holding pressure pressure,适当 improve/increase mold temperature degree solution.

◆28. electrical appliances outer housing/shell,四 assembly 柱子,打螺 filament 时爆裂 issues:

due to 柱子存 in water 线,造 formed product assembly easy 暴裂. mold increase gas,适当 improve/increase mold temperature, add fast speed degree decrease small water 线.

◆29. product deformation issues:

product deformation main/primary is hot shrinkage balanced formed product deformation, or due to product internal stress function lower make product deformation.

◆30. transparent PC outer housing/shell bubbles issues:

raw materials drying 不够; product in thick thin phenomenon, mold gas defect, raw materials easy separation understanding can can formed product bubbles. separation drying raw materials, increase large mold gas,尽 amount decrease/reduce thick thin phenomenon.

31. machine, magnetic property material issues:

应 using/adopting high mold temperature, fast speed methods.

◆32. product overmolding, water sink marks issues:

mold gas defect,射胶 speed degree slow, holding pressure pressure and time 不够,都 can formed water sink marks. increase large mold gas,适当 improve/increase speed degree, increase holding pressure pressure and time.

◆33. product internal stress, formed product 放置一段 time rear issues:

due to product inner 残存应 force, product 放置一段 time rear due to force function, make product 爆裂. improve/increase 啤塑时 mold temperature degree, reduce pressure, remove product force, product can use methods remove force.

◆34. ABS material in use black masterbatch 时, formed product easy fracture issues:

is masterbatch material in use carbon powder more causes,造 formed product 脱皮. more masterbatch material.

◆35. 一台180吨14安士 machine, product 一出四CD box/case 共120克, appearance good, 无批峰, its in heavy 2克, is what?

mold product 一出四, due to mold 进胶不 balanced formed its in product saturated 满, density large,出现 heavy 2克 phenomenon.

◆36. 一台100吨 liquid pressure machine use year, mold rear, 经常打不开.

is due to machine abrasion loss,造 formed mold opening balanced, therefore mold rear,会经常打不开.

◆37. 一台7安士 machine use year, 出现射胶 unstable, 一啤批峰一啤 short shot, 换 油封 and separation 胶头, system pressure stability, 就不行.

due to screw abrasion loss or loss bad,造 formed material 不匀, therefore 会出现射胶 unstable.

◆38. 一台150吨 new machine 啤PP water material semi year, 原 熔胶 most fast 3秒, in need 6秒.

due to screw abrasion loss,造 formed material slow.

◆39. 一啤塑师父 in debugging product, short shot, speed degree or pressure rise 一点, product reaction, again rise 一点就出批峰?

machine machine abrasion loss,造 formed has 间隙, therefore 会出现披锋.

◆40. machine use year, 啤货时炮筒 in temperature degree high, electrical 源也没 use.

due to screw abrasion loss coarse 糙,啤塑回 material abrasion scratch generate hot, make in temperature degree high.

◆41. certain has new machine 十几台, 油封经常漏油, 换 一段 time also 漏?

油 temperature high make easy aging loss bad,漏油;油缸芯子 abrasion loss,造 formed bad 油封漏油. issues 18-23请见教材二《 injection molding machine maintenance 》 related understanding.

◆42. electrical machine electrical 路 讲 understanding:

油泵 electrical machine is using/adopting 星三角起动

◆43. electrical principle understanding:

省 electrical is amount 泵, machine has as 时, pressure through 油阀油缸推动 machine as, again to 油箱, machine has as 时, pressure 油直接回 to 油箱.

◆44. electronics sheet/plate and 输出 讲 understanding :

由各 动 as 感应开关 and electronics and other 信号输入 electronics 版, electrical through rear again to 油阀, action as.

◆46. 油封顽 solid property causes and anti:

油缸芯子 abrasion loss bad 油封, formed solid property 漏油, maintain 油缸芯子 dry 净, abrasion loss anti bad 油封造 formed 漏油.

◆47. pressure and amount property for injection molding process effect/influence:

pressure and amount property formed ratio/proportion, for injection molding process parameters and stability has important 意义.

◆48. production cycle slow causes and improvement measures:

production cycle slow causes main/primary is cooling time long, and screw abrasion loss make material time add long. improvement mold cooling 效果, shrink short cooling time, more abrasion loss screw, make material time shrink short, add fast production cycle.

◆49. 熔胶时发出尖叫声 causes and solution/scheme:

熔胶时发出尖叫声 is due to screw and material abrasion scratch or screw and abrasion scratch 发出. for screw light or electroplating, make surface light slip decrease small abrasion scratch; adjustment screw in degree make it and 炮筒发生 abrasion scratch.

◆50. 锁模平行 degree testing and adjustment methods:

use 四 百 separation table/sheet machine 锁模时哥林柱 tensile long degree, is in 允许公差 inner, testing 哥林柱锁模平 and other degree. rear adjustment 哥林柱 large adjustment 锁模平行 degree. （看另一本书《 injection molding machine principle 》）

◆51. 哥林柱折断 causes and anti measures:

哥林柱折断 causes is due to 锁模不平 and other formed. adjustment 锁模平行 degree anti 哥林柱折断.

◆52. abrasion loss causes analysis:

曲肘 abrasion loss causes is, lubricated defect formed.

◆53. screw and separation 胶头折断 causes and anti:

screw and separation 胶头折断 causes, is due to plastics also to temperature degree or material inner has iron block screw, in material 时, pressure large formed screw and separation 胶头.

◆54. cooling device easy water analysis:

due to cooling water acid property or property large, cooling device pipeline, formed cooling device easy water.

◆55. nitrogen gas 射胶 安装 and application:

nitrogen gas is in 射胶油路 in 一 附 add plant/unit, in 射胶时, nitrogen gas speed 澎胀挤 pressure liquid pressure 油, make liquid pressure speed increase fast to fast speed 射胶.

◆56. gas 体辅助 equipment application:

gas 体辅助 is product 时, in product in gas, make product 里面空, can decrease/reduce plastics material.

◆57. ring and ring comparison:

开 ring and ring comparison is ring in 射嘴处 more add pressure device, setting parameters and data 偏差时, pressure device 就会反馈信号 to electrical 脑, electrical 脑就会修 positive value, make setting value and value versus and other.

◆58. water degree for injection molding machine effect/influence:

injection molding machine water degree for machine 开锁模 balanced has important 意义, for machine 运行平稳起 to ensure function.

◆59. sheet/plate （头 sheet/plate, sheet/plate, sheet/plate ）破裂 causes and anti measures:

模 sheet/plate causes main/primary is sheet/plate inner has internal stress, in force function lower, sheet/plate 破裂, sheet/plate in processing 时, and remove force, can anti sheet/plate 破裂.

◆60. use engineering plastics 时, 熔胶扭 force and pressure solutions:

use engineering plastics 时, 熔胶扭 force can can increase large grade 熔胶马达 solution, pressure can using/adopting decrease small screw solution.

◆61. material tube/pipe in temperature degree high causes and solutions:

material tube/pipe in temperature degree high, main/primary is screw surface light slip degree 不够, screw and material versus abrasion scratch formed. for screw surface light or electroplating. decrease/reduce material back pressure and other measures.

◆62. liquid pressure 曲肘式 injection molding machine in production in, clamping force decline and mold causes and solution/scheme:

main/primary is abrasion loss,锁模油缸油封 aging formed. more 换曲肘 copper sleeve/set, more 换锁模油缸油封.

◆63. use lubricated and lubricated 脂（黄油） comparison:

lubricated and lubricated is lubricated machine machine active 动, lubricated ratio lubricated more easy to machine active 动部位. lubricated can long time in machine active 部位.

◆64. electronics and understanding device comparison:

electronics and understanding device 都 is machine 运动标尺, electronics degree ratio understanding device 差, ratio understanding device stability, 不会变原点. understanding device ratio electronics degree high, has electronics stability, easy 变原点.

◆65. 油泵噪音变 large analysis:

main/primary is abrasion loss, or bearings abrasion loss formed 油泵噪音变 large.

◆66. in production positive 常 情况 lower, hot frequency causes analysis:

main/primary is hot 圈接触不 good, formed 线头烧断, or hot electrical hot filament high temperature resistance easy oxidation formed bad.

◆67. 顶针油缸 solid filament 经常折断 causes and solution/scheme:

main/primary is solid filament strong/high degree 不够, or solid filament easy 振松造 formed. more strong/high degree high solid filament, 安装时 need in solid filament upper add slip anti filament 振松.

◆68. add energy saving frequency device for machine effect/influence analysis:

add energy saving frequency device for machine stability has effect/influence, make machine pressure 迟缓.

◆69. liquid pressure 油变白变质 analysis:

liquid pressure 油变白 is due to liquid pressure inner mixed has water formed 变白变质.

◆70. 熔胶传动轴 easy 折断, bearings easy loss bad causes:

main/primary is 传动轴 solid 定螺母松动造 formed.

◆71. product weight large causes and solution/scheme:

product weight large is due to machine 锁模没 has 锁紧, or machine abrasion loss formed, pressure large or back pressure large can formed product weight large. machine machine is abrasion loss, is to 位. decrease small pressure or back pressure

◆72. mold 经常打不开 causes and anti measures:

mold 经常打不开, 检查油路 is has 卡死堵塞 phenomenon, 检查锁模 machine is abrasion loss, balanced phenomenon. mold 锁 太死, time long 都会造 formed mold 打不开.

◆73. 射胶终点 unstable causes analysis:

main/primary is 胶头止流 ring abrasion loss formed 射胶终点 unstable.

◆74. product in mold cavity inner force 计算:

product 投影面积× mono 位面积 射胶 pressure = mold cavity inner force

◆75. pressure and screw selection:

射胶 pressure F=[/4×(D12－D22)×P×2]×[/4×d2] (kgf) D1油缸 inner 径(CM) D2 active outer 径(CM) P system pressure

◆76. thermoplastic property and hot solid property plastics most large features is what?

thermoplastic property is hot to material soft temperature degree 时,材 material formed 熔胶, cooling rear solid molding, can 反复逆转. hot solid property is hot rear solid molding, cooling rear 不变,不 can 逆转.

◆77. is what plastics in need mixed has additives?

plastics in mixed has additives, is is product property can need, additives can improvement plastics in many property can and use.

◆78. how to setting clamping force?

setting clamping force is according to product 投影面积乘以 plastics material pressure 系数 参考(injection molding machine principle)

◆79. how to positive setting holding pressure 切换点?

positive holding pressure 切换点 is product to 98%时转 holding pressure.

◆80. screw high speed or relatively low speed for screw inner plastics 引起何 types 变化?

screw high speed 转动, can improve/increase 熔胶 塑化程 degree, due to high speed large 熔胶剪切 force, make viscosity decline, has molding.但 abrasion scratch hot increase large easy make separation understanding, temperature degree 失控. low speed make 熔胶塑化程 degree decline,但摩 scratch hot decrease small, for plastics property can has 利.

◆81. positive and positive back pressure use for plastics 引起何 types 变化?

screw in 旋转, rear retardant force is back pressure, retardant force is make raw materials in by screw 输送, pressure shrink process in more can troubleshooting raw materials in gas, raw materials density relatively high, injection shot formed product more add stability, raw materials in material tube/pipe inner relatively more 次 搅拌, therefore melt understanding hot increase for/regarding formed product mixed color defect, need fast speed color or plastics and formed product has gas marks, use back pressure 效果良 good. therefore back pressure low formed product easy generate internal bubbles or surface 银纹, back pressure high, raw materials easy hot, material lower material block, screw 不退, cycle long, 射嘴溢科. back pressure control has utilizing 节流阀 or pressure control types.