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Question:

After opening the mold, the thimble is broken and the mold opening speed has nothing to do with it

In order to compete with the leadership of this problem, today is the leadership picked up a meal, I said opening speed and push out too fast will lead off he said nothing of the thimble, with the opening speed a little relationship, don't call me that people listen to understand, speak out will laugh, a big office. I was hurt! Beg mold, great God answer, in the end there is no relationship? The product is thin and deep, and it is PC materialThe great God on the first floor is very careful.Actually, what I want to ask is..:The mold is opened in three sections, the first one is slow, the second is fast, and the third is slow.If I suddenly opened the first paragraph, would it affect the last top ejection?Because the mold opens too fast, often heard "pa" sound,This is not something, thus affecting the top rod.

Answer:

Say needle, so called negative pressure chamber. I began to suspect that there are many of them in our industry. But like the product you say. Thin wall or PC material?. Thimble fracture occurs. Seriously, it's hard to make mold out. Is the largest product sticking force, you can increase the draft angle and exhaust. Enlarge the thimble, do the double section. Let the fitter fit the ejector plate gap.
And mold opening fast, no matter, is the problem of mold manufacturing accuracy or quality problems.
If the bottom of the cavity, the top rod, the core of the gap between smaller, faster top, it is possible to make the bottom of the product form a negative pressure, coupled with the top rod is relatively thin, it is possible to break the top rod. This is just like the desktop on a newspaper, the newspaper here put a ruler, a ruler head out of the edge of the table. If you take a ruler, will feel very laborious is the same reason.

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