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Minimize the number of mould trials - reduce the cost of injection molds

update:29-03-2019
abstract:

Many injection molud companies calculate the processing […]

Many injection molud companies calculate the processing cost of injection molds. The processing cost is calculated based on the number of days after the injection molds are received from the order and the molds are qualified. If the molds are not tested, they can not be delivered, except according to the contract. In addition to the fine, the more days the mould is in the factory, the more processing costs. Of course, the cost of the test mode is also very considerable, so multiple or uncontrollable test mode times is a large blind spot for mold cost control.

Let's analyze the reasons why the number of moulds is too many.

The first is that the mold design has not undergone sufficient collective review, and the mold structure is unreasonable, so that the mold has to undergo many improvements after the test, so that the mold cost exceeds the budget.

If after several improvements, you can get it. It is fortunate. There are many cases that are unsatisfactory. Even if the mold is to be scrapped and reworked, the cost cannot be controlled.

There are also some cases where the mold design is very good, but the processing of the mold is not in place, which makes the number of trials increase without any reason, directly increasing the cost of the mold. There is no objection to this problem, so many mold companies have increased their investment in measuring equipment.

The second is that the model is not selected for the best molding process and the model of the injection molding machine. The mold is well made, but the injection molded product is not ideal. The number of trials is increased without any reason, which directly increases the cost of the mold. This is a common problem in some small mold factories.

The third is that there is not a sufficient understanding of the physical properties of plastics, and even the shrinkage rate is not accurate. Such a situation occurs from time to time. Therefore, before designing the mold, it is necessary to understand the physical properties of the plastic, in order to effectively reduce the number of trials.