Affecting the quality of toy injection mould 10 major factors
Toy mold manufacturing is a complex process, from the design, processing, assembly, commissioning and other steps, to the final real use, throughout the life cycle, the impact of mold quality factors are the following 10 aspects.
Steel is the decisive factor in the quality of the mold, choose a reasonable steel is the most important. The criteria for selecting steel are:
① requirements of injection molding materials
Different plastic to use different steel, toy injection mould such as the requirements of high polishing, corrosion-resistant requirements, and so on;
The steel material to use with the good, not the more expensive the better; taking into account the cost of mold factors, mold steel to use and mold life corresponding to the material to avoid unnecessary waste; general P20 material life of about 30 million; 2738 material 500,000 no problem, H13 / 2344 usually 80-100 million or more, according to the situation to choose;
③ surface treatment
The surface treatment of the mold is also very important. Nitriding can enhance the surface hardness of steel, toy injection mould effectively extending the life of the mold; plating can effectively modify the mold steel, for some need high brightness and corrosion-resistant plastic parts can use electroplating to enhance and improve the performance of steel.
2. Structural design
Mature mold structure not only take into account the product material properties, shrinkage, molding temperature, elastic tensile deformation coefficient, but also take into account the cooling water, open the mold speed. Reasonable mold structure can effectively extend the life of the mold and ensure the smooth production of molds, improve efficiency and reduce costs.
3. Mold processing
To be good at work, we must first of its profits. Mold process arrangements are particularly important, reasonable process arrangements to speed up the production cycle, shorten the processing time, effective cost savings. And more importantly, accurate and reasonable processing to ensure that the mold in the production process of stability and extended life. Processing errors will lead to mold welding, no matter how good the welding, the mold is a loss; another poor processing may also affect the mold action, toy injection mould reduce die life, resulting in mold in the production process of cracking Even broken.
4. Standard parts
Determine the bucket capacity is the lowest piece of wood. This reason we all understand, but often do not pay attention to the time. Mold is the same, although the standard parts are not directly involved in molding, but it controls the operation of the entire mold. Good standard parts should be able to wear, hard enough, high precision, not deformation. Different brands of standard parts difference is very large, so do not blindly bargain mold, kill to kill, your mold from the Mercedes-Benz straight down to the public.
5. Touch (fly mold)
On the touch is the experience of mold fitter, seemingly simple live but the most technical content of the work. Complex mold is mainly to see this effort. Flat mold the most simple, as long as the fractal surface as long as there is no flash off the basic ok. Like auto parts mold is very troublesome, toy injection mould not only the fractal surface is relatively irregular, and often includes multiple sliders, top blocks. At the same time through the touch can also be on the mold of other issues to improve and improve, so it is a comprehensive work.
6. polishing / stripping
The polishing of the mold is the last part of the mold making. Polished directly reflected in the plastic parts, so this is the most face of the work. Polishing can also help and replenish the mold action, especially for the mold is very meaningful. Often some mold production is not smooth because the light is not in place, the resistance is too large, stripping difficult, and even the top white, the top crack and so on.
7. Mold assembly
Mold assembly is the same as the assembly machine, each component, each screw can not be wrong, otherwise the consequences will be very serious, ranging from product defects, affecting production, while the damage to the mold, resulting in scrapped. So the assembly of the living must be very detailed. In particular, the assembly process should pay attention to the cleaning work of the mold, especially the waterway, screw holes, must be blowing inside the iron.
8. Hot runner or cold runner
This is actually the smallest impact on the quality of the mold, because the hot runner are generally designated brands, especially some large customers. Foreign famous brands in terms of quality or after-sales service are done in place, so the quality is generally not a problem. But some of the domestic hot runner is a great difference in quality. Individual small business in order to save costs, toy injection mould to fight for the price advantage, with some do not fly the heating and conduction parts, it is easy to go wrong. While the cold runner main problems on how to ensure that the injection of the balance, gate size, injection pressure and so on.
9. Cooling waterways
Those who have had mold experience know how important it is to cool a mold. As the price and labor wages increase, in the mass production of products, did not reduce the injection cycle of one second brought about by the profits are unimaginable. But to speed up the production cycle at the same time it would be the mold temperature rise, if not effective control, then the mold will be too hot can not be formed, and even lead to mold deformation failure scrapped. Therefore, excellent waterway design is particularly important, including the distribution of waterways density, diameter, links between each other and so on.
10. Mold maintenance
Mold maintenance is mainly in the production process of maintenance and repair. Mold like a car, if not long and no maintenance, then it may lead to die out of the mold. So every time after the use of the mold to be a comprehensive maintenance, in particular, toy injection mould is the molding part of the rust, the main action parts of the rust. Because the mold due to the production process to take water, may be installed or removed in the process of sleeping on the mold, so be sure to ensure that the mold dry, and then brush a layer of oil protection.