Overview of two-color die and encapsulating die: When designing encapsulating die, attention should be paid to the positioning of hard rubber part, and the rubber part should be sealed with anti-oblique holes to prevent the rubber from being deformed. Two-color mold is becoming more and more popular in the market at present. This technology can make the appearance of products more beautiful, and it is easy to change the color without spraying, but it is expensive and requires high technology.
Two shapes of 1 Different cavities form 1 product respectively. The cores of these two shapes are exactly the same. 2. The front and rear dies of the mold must match after rotating around the center 180o. This check must be performed at design time. 3. Pay attention to the position of the top pinhole, and the minimum distance is 210 mm. For large molds, the number of top holes should be appropriately increased. Moreover, because the ejector pin attached to the injection molding machine itself is not long enough, we must design an extended ejector pin in our mold, which grows about 150 mm from the bottom plate of the mold blank, and two positioning rings must be designed on the bottom plate of the rear mold. 4. The total thickness of the front template panel plus a plate shall not be less than 170 mm ... Please carefully check other reference data of this type of injection molding machine, such as the maximum mold thickness, minimum mold thickness, ejection hole spacing, etc. 5. The nozzle of the three-plate mold should be designed for automatic demoulding. Pay special attention to whether the demoulding action of the soft rubber mouth can be *. 6. The depth of the front sprue should not exceed 65 mm. The distance from the top of the upper sprue to the center of the blank should not be less than150 mm.. When designing the cavity of the second injection molding, in order to prevent the cavity from being inserted into (or rubbing against) the glue position of the first molded product, a part of the cavity can be designed. However, the strength of each sealing position must be carefully considered, that is, is it possible that the plastic will deform under a large injection pressure during the injection process, leading to the possibility of batch spike during the secondary injection? 8. During injection molding, the size of the product molded by the first injection molding can be slightly larger, so that it can be pressed more tightly with another cavity during the second molding to achieve the function of sealant. 9. Pay attention to whether the flow of plastic will have an impact on the product formed for the first time, so that the glue position will be deformed during the secondary injection. If this is possible, we must find ways to improve it. 10. Before board A and board B are combined, should we pay attention to the fact that the front die slider or inclined top will be reset first, crushing the product? In this way, we must find a way to close the A plate and the B plate first, and then the slider or LIFET of the front die can be reset. 1 1. The water delivery arrangement of the two cavities and the core should be as full, balanced and consistent as possible. 12.99%, the hard rubber part of the product is injected first, and then the soft rubber part of the product is injected. Because soft rubber is easy to deform.
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