济南注塑模具工厂在正式生产产品之前都要进行模具试模的步骤，在试模的过程中，往往会碰到这样那样的问题，这次总结了几个常见的问题以及办法。
Jinan injection mold factory always carries out mold test before formally producing products. In the process of mold test, we often encounter such problems. This time, we summarize several common problems and solutions.
一、主浇道粘模
1、 Main runner die sticking
1、抛光主浇道→2、喷嘴与模具中心重合→3、降低模具温度→4、缩短注射时间→5、增加冷却时间→6、检查喷嘴加热圈→7、抛光模具表面→8、检查材料是否污染。
1. Polishing the main runner → 2. The nozzle coincides with the mold center → 3. Reduce the mold temperature → 4. Shorten the injection time → 5. Increase the cooling time → 6. Check the nozzle heating ring → 7. Polish the mold surface → 8. Check whether the material is polluted.
二、塑件脱模困难
2、 Difficult to demould plastic parts
1、降低注射压力→2、缩短注射时间→3、增加冷却时间→4、降低模具温度→5、抛光模具表面→6、增大脱模斜度→7、减小镶块处间隙
1. Reduce the injection pressure → 2. Shorten the injection time → 3. Increase the cooling time → 4. Reduce the mold temperature → 5. Polish the mold surface → 6. Increase the demoulding slope → 7. Reduce the gap at the insert
三、尺寸稳定性差
3、 Poor dimensional stability
1、改变料筒温度→2、增加注射时间→3、增大注射压力→4、改变螺杆背压→5、升高模具温度→6、降低模具温度→7、调节供料量→8、减小回料比例
1. Change the barrel temperature → 2. Increase the injection time → 3. Increase the injection pressure → 4. Change the screw back pressure → 5. Increase the mold temperature → 6. Reduce the mold temperature → 7. Adjust the feed amount → 8. Reduce the return ratio
四、表面波纹
4、 Surface ripple
1、调节供料量→2、升高模具温度→3、增加注射时间→4、增大注射压力→5、提高物料温度→6、增大注射速度→7、增加浇道与浇口的尺寸
1. Adjust the feeding amount → 2. Increase the mold temperature → 3. Increase the injection time → 4. Increase the injection pressure → 5. Increase the material temperature → 6. Increase the injection speed → 7. Increase the size of the sprue and gate
五、塑件翘曲和变形
5、 Warpage and deformation of plastic parts
1、降低模具→2、降低物料温度→3、增加冷却时间→4、降低注射速度→5、降低注射压力→6、增加螺杆背压→7、缩短注射时间
1. Lower the mold → 2. Lower the material temperature → 3. Increase the cooling time → 4. Lower the injection speed → 5. Lower the injection pressure → 6. Increase the screw back pressure → 7. Shorten the injection time
六、塑件脱皮分层
6、 Peeling and delamination of plastic parts
1、检查塑料种类和级别→2、检查材料是否污染→3、升高模具温度→4、物料干燥处理→5、提高物料温度→6、降低注射速度→7、缩短浇口长度→8、减小注射压力→9、改变浇口位置→10、采用大孔喷嘴。
1. Check the type and grade of plastic → 2. Check whether the material is polluted → 3. Raise the mold temperature → 4. Dry the material → 5. Raise the material temperature → 6. Reduce the injection speed → 7. Shorten the gate length → 8. Reduce the injection pressure → 9. Change the gate position → 10. Use large hole nozzle.
What problems may occur when the injection mold is tested? Here we have explained six points to you. We hope to help you. Come to our website for more questions http://www.sdlqmj.com Consult.
