The purpose of mold spring is to take off material, press material, the strength of the spring, which is related to whether the mold production is smooth, whether the product is qualified.Spring force is small, may cause the product to be out of shape, the mold does not take off the material, the product is bad to take out from the mold inside, the belt material, the knife edge, punch easy to wear and so on each kind of question.
Mold spring according to different production times, compression amount selected, the larger the spring life, the shorter die life, of course, the broken spring can be replaced, but the specifications of each spring are different, the design has been determined, springs in use do not easily replace each other.The moulds may run out of steam for a while, and the spring of poor quality may break inside the moulds.
Generally according to 300,000 times to calculate the mold spring compression amount, that is to say the mold dozen 300,000 times the spring may have no force, of course general stamping die life is not so long, can also calculate by the maximum compression amount, according to the maximum compression amount to calculate, can only guarantee that the spring does not hit to explode in the mold.Die pressure a bit, the product flatness is also good.