Injection operator processing requirements

1, plastic product quality requirements 
1, the injection forming of the product, must ensure that the product structure is complete, there is no less material, more material phenomena.

2, product surface bright, uniform chromaticity, full.
3, the product surface is not filled with flowers, impurities, defects such as black spots.

4, the product shape neat, there is no deformation, warpage, and the internal products are obvious bubble phenomenon.

5, the product can cooperate with relevant parts is normal, without external force cannot be separated.

6, the assembled product to need, after assembling the operator's need to introspection, to ensure that products meet quality requirements. There is no
Not installed in place, packing, and have a fracture phenomenon.

2, the plastic products trimming 
1, the product of the inlet with trimming knife cutting, cutting mouth who can not have an express white appearance.

2, when trimming knife trimming, forcibly when repairing products shall repair products outside introversion, resistance force direction is not allowed to have another hand

3, product trim on the handle of the strength should be uniform, can guarantee a hard cut product as much as possible, long group of the front, middle
Not stagnation, a fix to the end, to ensure that after trimming the edges of the beautiful appearance.

4, the surface of the product by trimming does not allow defects wavy lines and uneven.
5, to remove the inlet area, trimming should level off, allow the phi 10 from minor scratches, trimming to improper Other parts are not allowed to have should be trimming undeserved cause scratch defect.

6, to put front height is greater than 0.2 mm should be handled for trimming (unless adjusting injection parameters to solve), especially in the production
The product outline on the edge of the phi front must be removed.

7, for different products, it is suggested that should use different types of trimming knife, to ensure product quality, improve the efficiency of trimming. 8, don't allow should trim other qualified on the surface of the damage caused by improper operation (such as good surface scratch, cut, etc.).

3, product storage and handling 
1, product stacked on the pallet height should not exceed 1.2 mm, the number of the same specifications each building products must be the same, with winding mode finally. For small products in the turnover box, the bottom in turnover box height should be 10 cm, the turnover box the loading weight of not more than 25 kg.

mold life what is factor affect

 mold life what is factor affect

No matter what kind of object has a certain service life, the injection mold is no exception. When the mold is used to a certain extent, the injection mold will be invalid. It is necessary to open the mold to produce a new mold. The service life of the injection mold is affected by many factors, only An injection mold factory that fully understands these factors can produce molds with longer life.
The first factor affecting the life of an injection mold is dissolution failure. The injection molding alloys commonly used in injection mold factories are zinc alloys, aluminum alloys, magnesium alloys, and copper alloys, as well as pure aluminum injection molding. Zn, Al, and Mg are more active metal elements, and they have a better affinity with mold materials, especially Al is easy to bite. When the hardness of the mold is high, the corrosion resistance is good, and if the molding surface has a soft point, the corrosion resistance is disadvantageous.

The second reason that affects the life of injection molds is thermal fatigue, which leads to failure of crack damage. During injection molding, the mold is repeatedly subjected to the action of stimulating heat, and the forming surface and its interior are deformed, causing repeated cyclic thermal stresses. The damage of the structure and the loss of toughness lead to the appearance of microcracks and continue to expand. Once the cracks are enlarged, the molten metal liquid is squeezed in, and the repeated mechanical stress causes the cracks to accelerate and expand. For this purpose, on the one hand, the mould must be sufficiently preheated at the beginning of the injection. In addition, the mold must be kept in a certain operating temperature range during the injection molding process to avoid early crack failure. At the same time, it is necessary to ensure that the internal factors before and during the production of the mold are not problematic. Due to actual production, most mold failures are a crack failure.

The third reason that affects the life of the injection mold is the failure of the fracture. Under the action of the injection force, the mold will crack at the weakest point, especially the trace marks or electro machining marks on the molding surface are not polished, or Fine cracks appear first at the clear corners of the molding. When there is a brittle phase or coarse grain in the grain boundary, it is easy to break. The crack propagates rapidly during brittle fracture, which is a dangerous factor for the failure of the mold. For this reason, on the one hand, scratches, electric machining marks, etc. on the mold surface must be polished, even if it is in the casting system, it must be polished. In addition, the mold material used is required to have high strength, good plasticity, impact toughness, and fracture toughness.
 
      After understanding the three factors that affect the service life of injection molds, CNMOULDING injection mold factory can adjust these problems in the process of manufacturing, avoiding the influence of these factors in advance, and making better quality molds. It not only greatly improves the efficiency of production, but also saves the production cost of the enterprise.

There are also some reasons that affect the precision of the mold.