Mold Test

- Jan 29, 2018-

         Mold test, is the construction site and the college laboratories. Often used in the construction equipment annex, the test mold is divided into cast iron and plastic mold, cast iron mold durable, recyclable value high, but the cost is slightly expensive plastic test mold low cost, but due to the impact of climate temperature, and Produce thermal expansion and contraction, resulting in a slight deviation of the test block. Generally better laboratories are insisted on the use of cast iron test mode, but because of low prices, many sites still like plastic mold test.

        Mold test refers to the product development and manufacturing processes in the product after the completion of mold making, mass production before the test injection step. After all the parts have been assembled and assembled, the mold needs to be injection-molded, and then tested to determine if the mold has been manufactured in full compliance with the design requirements. If the injection molding samples in full compliance with the design requirements that no problem with the mold can be put into mass production injection; Otherwise, we need to sample the issue of mold modification. Depending on the mold change, the trial run may be repeated several times before mass production until the mold completely corrects all problems.

The methods: 

        We triple test mode. Base 7 is made of cast iron, the upper and lower sides are planed, the upper plane with two locating pins 5. Both the end plate 4 and the separator 6 are made of flat steel, and the surfaces of the mold cavities are polished. The pressure block 3 and the compression screw 2 are riveted together and form a pressing device together with the pin 1 for pressing or releasing the end plate for quick loading and unloading. When the mold should pay attention to the end plate and the partition under the plane and the base plane must be tight, may not be flexible, if necessary, can be pressed in the model at the same time, with a wooden hammer hit the board on the plane, so that with the base stickers tight. Apply a thin layer of oil on the parts of the mold cavity before molding each time, and then close the spacer with the positioning pin to prevent the cavity from being skewed. After each release, should immediately wipe all parts of the surface of the remaining material and oil rust. The model during use should be regularly (once a quarter) check the size of the cavity, when found to exceed the tolerance GB177-77 provisions, should immediately stop using.