Shanghai Daoqin Plastics Co., Ltd.

        平面 injection molding parts large, shrinkage amount very large. due to large type injection molding parts separation toward 排列极 is heavy, add upper mold cooling non-uniform, make injection molding parts direction shrinkage rate 出现不一致, make mono thin large injection molding parts very easy deformation and phenomenon. has large injection molding parts certain design has 支承骨, this injection molding parts also has 骨 一面 bending.

         need solution large injection molding parts deformation issues is difficult 题, in production in summary relatively is has measures improvement deformation issues:

        1.  will mold formed more 点式入 water (usually is sheet/plate 模), 24安 machine above large injection molding parts most good to 4点 above. this can decrease light separation toward 排列 程 degree, decrease small toward shrinkage 不一致 差距.

        2. 适当 improve/increase mold temperature degree, ABS material usually maintain in 60℃ above, reduce injection molding parts cooling speed degree, decrease small cold formed temperature deformation, meanwhile can reduce separation toward 排列 程 degree.

        3.  most important is, increase large or holding pressure pressure, large large long or holding pressure time, make injection molding parts dimensions increase large, decrease small it shrinkage amount, deformation degree therefore to obvious improvement. therefore, long or holding pressure time (如延 long 10至15秒), already formed is solution deformation issues commonly used important 手段.

        4. 若 above measures can to 理想 效果, has 采取出模定 type method. is generally 人都运 use is very good, therefore need tips/techniques.

         summary:

        首先, need will injection molding parts 提早出模, rear, its still 处于几十 degree high temperature lower (应该 still very 烫手, this very key/critical), in as upper use tool type, key/critical, is type tool design need combined 适.

         meanwhile also need injection molding parts elastic degree, usually 12 small rear elastic basic 停止, but also mold temperature degree low elastic amount large. 谓矫枉必 must positive, therefore production need research pressure positive amount.