The production process of two-color liquid silicone mold is relatively complicated and requires multiple delicate steps and strict control.
First of all, the design of the mold is the key starting point. Designers need to carry out precise three-dimensional modeling and structural design according to the shape, size, structure and two-color distribution requirements of the product. This not only takes into account the appearance and function of the product, but also fully considers factors such as the parting surface, gate position, and exhaust system of the mold to ensure that the silicone flows evenly and fills completely in the subsequent production process to avoid defects such as bubbles and lack of material.
In the selection of mold materials, high-quality steel with good hardness, wear resistance and corrosion resistance is required to ensure the stability and precision of the mold in long-term use.
Next is the processing of the mold. This usually includes milling, drilling, grinding and other operations using CNC machine tools to manufacture various parts of the mold. For complex mold structures, special processing technologies such as EDM and wire cutting may also be required to achieve high-precision and complex shape processing.
Then comes the assembly and debugging of the mold. The processed parts are accurately assembled to ensure tight fit and smooth movement. During the assembly process, it is also necessary to install ancillary components such as sprue sleeves, runners, ejectors, etc., and debug the mold opening and closing movements, ejection mechanisms, etc. to ensure the normal operation of the mold.
When making a two-color liquid silicone mold, special consideration should be given to the process requirements of two-color molding. This may involve the configuration of multiple injection molding systems, the control of color switching, and the compatibility and bonding strength of the two silicone materials. In order to achieve the two-color effect, a complex runner and valve needle system may need to be set up inside the mold to accurately control the injection sequence and position of the two colors of silicone.
In addition, the surface treatment of the mold is also very important. Polishing, nitriding and other treatments are required to improve the finish and wear resistance of the mold surface, thereby ensuring the appearance quality of the product and the service life of the mold.
Finally, after the mold is made, it is necessary to test the mold and optimize it. Through trial production samples, the dimensional accuracy, appearance quality, two-color bonding effect, etc. of the product are tested, and the mold is adjusted and improved according to the problems that arise until the ideal production effect is achieved.
For example, the production of a two-color liquid silicone mobile phone case mold may take weeks or even months from the initial design to the final trial mold optimization, involving the collaborative work of multiple professional technicians, as well as the use of advanced equipment and processes.
In summary, the production process of Two-color liquid silicone mold involves multiple links and technical requirements, requiring a high degree of professional knowledge and experience, so it is a relatively complicated process.
