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injection molding machine clamping control need attention/notes issues
mold opening control:
当熔 melt plastics injection mold cavity inner and cooling formed rear,随 便 is mold opening as,取出 products. mold opening process separation stage/phase. stage/phase slow speed mold opening, anti made parts in mold cavity inner 撕裂.
第二 stage/phase fast speed mold opening, shrink short mold opening time. stage/phase slow speed mold opening, decrease low mold opening property formed impact and 振动.
clamping control:
clamping is large machine force will mold combined 紧, 以抵挡 injection molding process melt plastics high pressure injection and filling mold mold 发生 巨 large force.
关妥 safety 门, 各行程开关均 to 出信号, clamping as 立即开始. is sheet/plate slow speed 启动, front small short 距离以 rear, pressure slow speed control pressure block 脱离, active sheet/plate fast speed toward front 推进. in front 进至靠近 clamping 终点时, control 杆 另一端 pressure also pressure upper slow speed 开关, active sheet/plate also slow speed low pressure front 进.
in low pressure clamping process in, if mold between has 任何障碍, can combined pressure upper high pressure 开关, high pressure is is machine from formed clamping as. this 段距离极 short, generally has 0.3~1.0mm, rigid high pressure 旋即就触 and clamping 终止限位开关, this as 停止, clamping process 结束.
injection molding machine clamping structure has full liquid pressure and machine 械连杆式. tube/pipe is that types structure 形式, most rear is 由连杆完 full 伸直 实施 clamping force. 连杆 伸直 process is active sheet/plate and sheet/plate process, is 四根拉杆受 force by tensile process.
clamping force large small, can from combined 紧模 瞬间油 pressure table/sheet rise most high value 知, clamping force large pressure table/sheet most high value high, 反之则 low. relatively small type injection molding machine is belt/tape clamping pressure table/sheet, this need according to 连杆 伸直情况 判断 mold is true combined 紧.
if certain injection molding machine clamping 时连杆 very light 松 伸直, or “差一点点”未 can 伸直, or 几副连杆 in has 一副未完 full 伸直, injection molding 时就会出现胀模, made parts 就会出现 flash or its it 毛病.
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