Mold quality determines its service life, and affects the production costs of enterprises, then mold quality is affected by what factors?
1. Mold steel
Steel is a resolution factor in the quality of molds, and the selection of reasonable steel is the most important. The criteria for selecting steel are:
(1) Requirements for injection information
Different plastics to choose different steel, such as high polishing requirements, corrosion-resistant requirements and so on;
2 Price
Steel can be used well, not the more expensive the better; taking into account the mold cost factors, mold steel to choose and mold life number corresponding information to prevent unnecessary waste;
(3) Appearance treatment
The exterior treatment of the mold is also very important. Nitride can enhance the exterior hardness of steel, useful extension of mold life, electroplating can be useful modification of mold steel, some need high brightness and corrosion-resistant plastic parts can be used electroplating to enhance and improve the function of steel.
2. Structural design
Mature mold structure not only takes into account the characteristics of product information, shortening rate, molding temperature, elastic stretch deformation coefficient, etc., but also take into account the cooling waterway, opening and closing mold speed. Reasonable mold structure can usefully extend the number of mold life and ensure the smooth production of mold, improve efficiency, reduce the cost.
3. Mold processing
If you want to do good, you must first take a good hand. Mold process organization is particularly important, reasonable process organization can speed up the production cycle, shorten the processing time, useful to save money. And more importantly, accurate and reasonable processing can ensure the stability of the mold in the production process and extend the number of life. Processing mistakes will lead to mold welding, no matter how good welding, the mold is a loss;
4. Standard parts
Resolution bucket capacity is the lowest one of the wooden bars. We all understand this truth, but in the time of doing often do not pay attention to. The same is true of molds, where standard parts, although not directly involved in molding, operate the entire mold. Good standard parts should be wear-resistant, hard enough, high precision, not suitable for deformation. Different brands of the standard parts price difference is very large, so do mold do not just kill price, kill to kill, your mold from running straight down to the public.
5. Touching (Flying Mold)
To touch is the experience of mold fitter, seemingly simple work is with technical content of the operation. The first thing to look at is this kung fu. Flat mold is brief, fractal surface just need no fly-side break basic ok. Like car parts mold is very troublesome, not only fractal surface is more irregular, and often contains multiple sliders, top blocks. Together through the touch can also improve and perfect the mold for other problems, so it is a comprehensive operation.
6. Polishing/skin
The polishing of the mold is a part of the production of the mold. The polishing is directly reflected in the plastic parts, so this is a decent job. Polishing can also help and make up for the mold action, especially for the release of very meaningful. Often some mold production is not smooth is because the light is not in place, resistance is too large, release difficulties, and even white, top cracking and so on.
7. Mold unit
Mold device is like an assembly machine, every component, every screw can not make a mistake, otherwise the result will be quite serious, light will lead to product shortcomings, affect production, heavy is completely harmful to the mold, the formation of waste. So the work of the device must be very detailed. In the process of installation, especially to pay attention to the mold cleaning work, especially waterway, screw holes, must blow clean inside the iron chips.
8. Warm runner is still a cold runner
This in fact has little impact on mold quality, because the warm runner is generally the customer designated brand, especially some large customers. Foreign well-known brands regardless of the quality is still after-sales service is done in place, so the quality will generally not be a problem. Only some of the domestic warm runners are very different in quality. A single small business in order to save money, to compete for price advantage, with some unreliable heating and conduction accessories, simple problems. The primary problem of the cold runner is how to ensure the balance of injection molding, the huge fineness of the gate, the injection pressure and so on.
9. Cooling waterways
Anyone who has had a mold experience knows how important cooling is to a mold. Because of the increase in prices and human compensation, when producing products in large quantities, the profits from not cutting a second of the injection molding cycle are unfantasy. But to speed up the production cycle together will be the mold temperature rise, if not useful control will make the mold because too hot to form, and even lead to mold deformation failure. Therefore, excellent waterway design is particularly important, including the density of the waterway arrangement, diameter, links between each other and so on.