How to choose a suitable mold base to make an injection mold
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The design of the Needleless Injection Site mold cooling system is often regarded as a secondary issue. Not enough attention has been paid to the size and structural design of the cooling system. The unreasonable design of the cooling system will produce internal stress for small plastic parts, and cause deformation and even stress cracking for large plastic parts with thin walls.
Moreover, insufficient cooling will lead to prolonged molding cycle, thereby reducing production efficiency. Determining the size of the cooling system is undoubtedly not a simple task. Generally speaking, mold designers are still unfamiliar with certain aspects. This kind of work is very complicated, even in the technical literature, it is difficult to find a satisfactory answer to certain questions.
Because the injected high-temperature plastic melt is only in contact with a part of the mold-the cavity, while the entire mold is cooled by the cooling water in the cooling channel. In addition, the cooling water is heated while passing through the cooling channels of the mold, thereby changing the temperature difference between the mold and the cooling water.
A large part of the standard parts have been commercialized. The selection of standard mold bases and standard parts is extremely beneficial to shorten the manufacturing cycle and reduce the manufacturing cost. In the process of injection mold design, mold design software, mold intelligent design software, mold base design and standard parts selection are a crucial part.
When designing the mold base, it is necessary to select the standard mold base as much as possible, and determine the form, specification and thickness of the standard mold base. Standard parts include general standard parts and mold-specific standard parts.
General standard parts such as fasteners, mold-specific standard parts such as positioning ring, sprue bushing, push rod, push tube, guide post, guide sleeve, special mold spring, cooling and heating elements, secondary parting mechanism and precision positioning Use standard components, etc.
A large part of the standard parts have been commercialized and can be bought on the market at any time. The selection of standard mold bases and standard parts is extremely beneficial to shorten the manufacturing cycle and reduce the manufacturing cost. After the buyer's size is determined, the necessary strength and rigidity calculations should be performed on the relevant parts of the mold to check whether the selected mold base is appropriate, especially for Laboratory Plastic Ware Mould.