Injection molding mold with efficient heat dissipation function for television face frame production

Abstract

The invention discloses an injection molding mold with an efficient heat dissipation function for television surface frame production, which comprises an upper mold base and a lower mold base for realizing mold closing and mold opening states, an injection molding cavity is defined by mold closing between the upper mold base and the lower mold base, the upper mold base and the lower mold base are respectively provided with an opening-shaped ring cavity, the ring cavity is arranged along the contour of the injection molding cavity in a wrapping manner, and the opening-shaped ring cavity is communicated with the injection molding cavity. A ring channel cavity formed in the upper die base is sealed through an upper sealing cover, a ring channel cavity formed in the lower die base is sealed through a lower sealing cover, transverse channels are arranged on the left side and the right side of the ring channel cavity in a communicating mode respectively, a vertical channel is arranged on the transverse channel on each side in a communicating mode, and a first opening and closing mechanism for sealing or opening is arranged at the tail of each vertical channel. The first opening and closing mechanism enables the annular channel cavities formed in the upper die base and the lower die base to be communicated up and down or closed. By the adoption of the technical scheme, temperature rise or temperature reduction between the upper mold base and the lower mold base is uniform, and non-uniform injection molding heating or cooling in the mold closing state is avoided.

Description

technical field [0001] The invention relates to the technical field of injection molding of TV face frames, in particular to an injection moulding mold with efficient heat dissipation function for TV face frame production. Background technique [0002] In recent years, people are no longer satisfied with the functions of TV sets, and their appreciation for the overall appearance of the body and the requirements for environmental protection have gradually increased; the traditional TV frame is pre-injected in an injection mold, and then the frame is sprayed. Treatment, the manufactured face frame is neither environmentally friendly nor stable in quality. With the improvement of injection molding technology, most of the TV face frame injection molding process now adopts spray-free high-gloss and traceless injection molding technology, and the surface gloss of the injection-molded face frame is High and no defects such as weld lines, flow marks and sink marks, and eliminates th...

AI Technical Summary

Problems solved by technology

[0003] The implementation of spray-free high-gloss seamless injection molding technology is inseparable from the close cooperation of injection molding molds. Injection molding molds must ensure that the cavity can quickly heat up and cool down, and make the temperature of the mold cavity uniform. Existing injection molding for TV frame production The forming mold has the following disadvantages. Since the cooling water channel and the steam heating channel close to the cavity are generally used in the current mold, the cooling water channel and the steam heating channel are separately set in the upper and lower mold bases, and the surface frame products that are injection molded need to be cooled quickly. Preheating remains in the steam heating channel, and cooling water is transported by the cooling water channel, which may easily cause the problem of uneven heat distribution in the cavity, which affects the cooling molding efficiency and injection molding quality of the surface frame product, which needs to be improved

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