When it comes to the cost control of precision plastic molds, I believe most small and medium-sized mold enterprises will first think of the following methods:

  make the material as thin as possible to save material?

  reduce processing volume?

  less thimble, insert?

Try not to use hot runner as much as possible?

Change the mold material from imported steel to cheap domestic steel?

Less design and processing of waterways?

   cooling water circuits are connected in series to reduce water pipe joints

   basically, they save costs from materials and processing costs. In fact, the concept is wrong, you know? You only see the surface of the cost. The above methods just increase the cost, not reduce the cost, because the design of precision plastic mold should give sufficient insurance coefficient to the material strength, because the cost of modifying and testing the mold caused by material problems is definitely much greater than the material cost?

Therefore, the most cost optimization is to optimize the structure of precision plastic mold on the premise of ensuring the required performance of the mold itself in the design link:

   I: the ejection design of the mold should be sufficient. We prefer excess. We should not cause problems such as product ejection protrusion, ejection imbalance and product ejection deformation due to the saving of ejector pins. The loss caused by modifying the mold at one time is far greater than several ejector pins;

   II: don't make less inserts because of reducing the processing cost. In the difficult processing area, the local flow end of the product shall be made into inserts as much as possible, and enough exhaust slots shall be made on the inserts. Making more inserts seems to increase the cost, but in fact it will reduce a lot of molding risks. The processing volume of die is small, and the inserts can be processed synchronously to shorten the mold processing cycle; The insert is conducive to exhaust, shorten the filling time, reduce the forming pressure and reduce various product adverse problems caused by gas trapping;

  III: the cooling water path of precision plastic mold should be as much as possible, and balance and rationality should be considered, especially for products with large and thick products. Multiple design and processing waterways seem to increase the cost. If the product forming cycle can be reduced by 3-5 seconds, can it better reflect the value of the mold;

  IV: in order to reduce joints, it is also an extremely wrong idea to connect many waterways in series. Some on-site injection molding personnel directly connect multiple waterways in series for convenience. If the cooling water flows too long in the mold, the water temperature will rise, and there will be obvious difference between the inlet and outlet temperatures, which will affect the cooling effect of the product, and even cause the product to deform due to uneven cooling;

  V:

The design of precision plastic mold should design exhaust as much as possible, and reasonably design exhaust and process it; Many small and medium-sized mold enterprises do not design exhaust slots in mold design, which is handled by on-site fitters according to their own experience, which is very wrong; Designing and processing exhaust seems to waste cost. Exhaust problem is a very important factor causing product problems, which should be paid attention to. The benefits of exhaust are not explained in detail here;

   VI: in the design of precision plastic mold, we should actively communicate with customers, judge the parts that are easy to be modified by customers' products and the parts that are easy to be damaged in mold production, and make a plan in advance to facilitate subsequent mold modification. If it is made into inserts that can be replaced quickly and spare parts in advance, it is necessary to make a plan in advance, otherwise the mold repair cost will be high;

   VII: the parts of precision plastic mold design must have tolerance standards, and the processing and testing must be carried out according to the tolerance requirements. Some factories do not have detailed tolerance standards at all, and the supervisor often signs for special purchase if the processing is unqualified. These are the hidden dangers that cause mold problems and increase the cost of modifying the mold.