In injection molding, sometimes the mold will bounce back about 20mm after it is opened to the end. Here, Jinan injection molding factory will talk about the rebound of injection mold?

1.開模行程設定不合理,緩衝速度壓力太大,位置太小。

1. The setting of mold opening stroke is unreasonable, the buffer speed pressure is too large, and the position is too small.

2.開模油缸有空氣也（yě）會有此現象。

2. This phenomenon also occurs when there is air in the mold opening cylinder.

3.應該是在頂出時慢（màn）慢爬行20mm吧,如果（guǒ）是這（zhè）樣就檢查合模閥。

3. Crawl slowly for 20mm during ejection. If so, check the clamping valve.

4.先查換向閥中（zhōng）位（wèi）情形及油缸密封件.還有壓力的斜率

4. Check the center position of the reversing valve and the sealing parts of the oil cylinder first And the slope of pressure

5.通過沉頭螺絲調節開合調節開合模換向閥內部導引油（yóu）小孔子(X、Y)可緩（huǎn）解
5. Adjust the opening and closing by countersunk screws. The small Confucius (x, y) in the opening and closing die reversing valve can be relieved

6.還有可能是油箱空氣濾芯堵塞排氣不暢!

6. It is also possible that the air filter element of the oil tank is blocked and the exhaust is not smooth!

7.開鎖（suǒ）模油缸內泄.檢查活塞密封圈和活塞與活塞杆之間（jiān）螺紋內泄。

7. Internal leakage of unlocking die cylinder Check the internal leakage of the piston sealing ring and the thread between the piston and the piston rod.