Key points in mold design:
- 1 Reasonable overall mold layout,
- 2 parting surface selection,
- 3 runner arrangement, glue inlet selection,
- 4 ejection device,
- 5 water transport arrangement,
- 6 exhaust selection,
- 7 parting Pay attention to the draft angle, the extraction of the insert, the treatment of the rubbing angle, and the selection of the shrinkage of the material.
- 8 The processing drawing should be detailed, but simple.
Can be demoulded! Easy to process! Easy ejection!
H13 is 2344 in Europe, and H13 of the same kind as SKD61 in Japan is soft material. The material has good hardenability and wear resistance. Generally it can be used in molds with more than 300,000 beer. After heat treatment, it can reach 56HRC. Generally, the hardness is also common. It’s between 48~56HRC. Image
For general slant material, which requires high surface hardness, but also a certain internal toughness, so if the mold core with H13, when hardened to 52HRC after, the lifter can use this pre NAK80 just like hard, for Generally, large companies require that the mold core material cannot be the same material as the inclined top. If the customer clearly specifies the same material, it must be 5HRC or negative 5HRC higher than the mold core material after heat treatment to prevent burns or bites during the molding process. Improve its wear resistance.
Generally, it is not recommended to use 420 type for inclined roof, because it is stainless steel, it is easy to burn to death.
The point is that if the structure is simplified as much as possible, but the quality of the mold must be guaranteed, the company will make the most profit from it. When we receive a product, the first problem is to find the largest parting surface and roughly determine the front and back Mold, and then analyze the structure of the front mold and the structure of the rear mold on the basis of this parting surface: inserts, row positions, inclined tops, and other auxiliary mechanisms. After the structure is clear, the next step is to consider processing to determine the structure Reasonability: inlay or not; should be CNC or wire cutting; should be CNC or engraving, etc. The structure affects processing, and processing involves costs and delivery time.
So how can we simplify the mold structure to the greatest possible extent?
On the one hand, review the product with customers At that time, it is necessary to focus on the problem of mold release caused by the product and whether to improve the product;
On the other hand, whether to hold a meeting in the company before mold design, solicit a variety of feasible structure suggestions. Determine the final plan from the perspective of processing and customer requirements.
