Double water-cooling and demoulding mechanism of plastic bottle cap mould

Abstract

The invention relates to a double water-cooling and demoulding mechanism of a plastic bottle cap mould, comprising a cavity, a slide block, a cap removing cover, an outside core and an inside core, wherein the outer wall of the cavity is provided with a cooling water bath. The double water-cooling and demoulding mechanism is characterized in that a close nozzle of the cavity is internally provided with cooling water channel holes, the top of the inside core made from a beryllium bronze material is contacted with the nozzle of the cavity, the outside core arranged outside the inside core is provided with gas holes, and the gas holes are inclined toward the top of the inside core, thus the air reaches the opening part of the cap removing cover and is cooperated with the cap removing cover to push a bottle cap out, and the slide block is arranged among the cap removing cover, the outside core and the cavity. The close nozzle of the cavity is internally provided with the cooling water channel holes to enhancing rapid cooling carried out on the outer surface of the bottle cap, and the inside core made from the beryllium bronze material directly props against the nozzle of the cavity to obtain good heat conduction, and the cooling time is reduced by one half; and meanwhile, the inside core substitutes the existing central jack, especially the gas holes are arranged in the outside core, the air can reach the top along the inside core and the outside core to push out the bottle cap under the coordination of the cap removing cover, the demoulding process is smoothly, the speed is fast, and the plane of the bottle cap is smooth.

Description

technical field [0001] The invention relates to a plastic bottle cap mould, in particular to a double water cooling and demoulding mechanism for the plastic bottle cap mould. Background technique [0002] Plastic bottle caps are small in size, light in weight (generally only 2-2.5 grams), and thin in wall. The maximum thickness of the product is usually 1.5 mm, but the processing speed is fast, so the cooling requirements for the mold are high. The existing bottle cap mold only has a cooling water tank on the outer wall of the cavity, and the cooling effect is poor. At the same time, the core is made of steel, which further affects the cooling conduction speed and inhibits the production efficiency. At the same time, after the prior art injection molding is completed, the demoulding of the bottle cap includes opening the mold and then scratching the slider, and the product is pushed out by the demoulding sleeve and the center top at the same time. Processing with a larger t...

AI Technical Summary

Problems solved by technology

The existing bottle cap mold only has a cooling water tank on the outer wall of the cavity, and the cooling effect is poor. At the same time, the core is made of steel, which further affects the cooling conduction speed and inhibits the production efficiency.

At the same time, after the prior art injection molding is completed, the demoulding of the bottle cap includes opening the mold and then scratching the slider, and the product is pushed out by the demoulding sleeve and the center top at the same time. Processing with a larger tonnage injection molding machine, the production cost is high; on the other hand, when the center is ejected, the level of the bottle cap will be uneven, which affects the processing quality of the bottle cap and the production efficiency is low.

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