Shanghai Daoqin Plastics Co., Ltd.

1, parameters setting front 需确认 and setting parameters 　⑴确认材 material drying, mold temperature and add hot temperature degree is by positive setting to can processing 状态. 　⑵检查开闭模 and ejection as and setting. 　⑶ injection shot pressure （P1） setting in most large value 60％. 　⑷ maintain pressure （PH） setting in most large value 30％. 　⑸ injection shot speed degree （V1） setting in most large value 40％. 　⑹ screw speed （VS） setting in 约60RPM. 　⑺ back pressure （PB） setting in 约10kg/cm2. 　⑻松退约 setting in 3mm. 　⑼ holding pressure 切换 位置 setting in screw 直径 30％. 例如φ100mm screw, setting 30mm. 　⑽计 amount ratio value short setting. 　⑾ injection shot time short, cooling time long setting. 2, 手动运转 parameters positive 　⑴闭锁 injection molding parts mold （确认 high pressure upper rise ）, injection shot base/seat front 进. 　⑵以手动 injection shot to screw full 停止, attention/notes 停止位置. 　⑶ screw 旋退进 material. 　⑷待 cooling rear mold opening molding product. 　⑸ heavy 复⑴~⑷ steps, screw most 终停止 in screw 直径 10％~20％ 位置, but also molding product short 射, flash/burrs and whitening, or cracking and other phenomenon. 3, semi 自动运转 parameters positive 　⑴计 amount 行程 修 positive [计 amount 终点] will injection shot pressure improve/increase to 99％, holding pressure is 0, will amount 终点S0 toward front to short 射, again toward rear 调至发生 flash/burrs, its in is selection 位置. 　⑵出 speed degree positive PH回复 to water 准, will injection shot speed degree upper lower adjustment, 找出发生 short and flash/burrs speed degree, its in is speed degree [本 stage/phase can 进入以 more speed degree for appearance issues parameters setting ]. 　⑶ maintain pressure positive upper lower adjustment maintain pressure, 找出发生 surface and flash/burrs pressure, its in is selection holding pressure. 　⑷ holding pressure time [or injection shot time ] 修 positive 逐步延 long maintain time, molding product weight obvious stability is selection. 　⑸ cooling time positive 逐步调 drop cooling time, 并确认 lower 列情况 can meet/satisfy: 1, molding product by ejection, 夹出, 修整, packaging whitening, or deformation. 2, mold temperature can balanced stability. thick 4mm above products cooling time easy method: 　　①理论 cooling time =S（1+2S）……. mold temperature 60 degree below/following. 　　②理论 cooling time =1.3S(1+2S)……. injection molding parts mold 60 degree above [S table/sheet molding product most large thick ]. 　⑹塑化 parameters positive 　　①确认 back pressure is need adjustment; 　　② adjustment screw speed, make amount time short cooling time; 　　③确认计 amount time is stability, can adjustment add hot temperature degree degree. 　　④确认 nozzle is has material, runner is 否发生猪尾巴 or mold sticking, formed product has gas and other phenomenon, adjustment nozzle temperature degree or 松退距离. 　⑺段 holding pressure and more speed active use 　　① generally 而言, in effect/influence appearance lower, injection high speed is 原则, in through gate and holding pressure front relatively low speed 进行; 　　② holding pressure using/adopting decline, 以避免 molding product internal stress 残留太 high, make molding product easy deformation.