No-gap cutting molding method for riveting edge of easy-pull bottle cap

Abstract

The invention discloses an easy-pulled bottle cap pull ring riveting edges gapless cutting and molding method. A pull ring comprises an annular pull handle portion and a riveting portion connected with the inner side of the annular pull handle portion and used for riveting and being matched with a bottle cap. A specific molding method comprises the steps that a pull ring blank plate of which a contour is cut of the edges and molded is disposed between an upper die and a lower die of a stamping die, and the edges of the contour trimming edge of the pull ring blank plate are folded through declining and stamping of the lower die; the upper die cooperates with the lower die, a transition between a profiling inner depression of the annular pull handle portion, the lower end edge of the profiling inner depression of the riveting portion and an upper die main body is an arc-shaped chamfering transition, and the transition between a profiling protrusion of the annular pull handle portion, theupper end face edge of the profiling protrusion of the riveting portion and a lower die main body is an arc-shaped chamfering transition, so that when the upper die and the lower die cooperate with each other, the dies are not prone to be scraped and noticeable scratch marks are not prone to be left on the surface of the contour trimming edge of the pull ring blank plate.

Description

technical field [0001] The invention relates to the field of production of pull rings for easy-open caps, in particular to a gap-free cutting molding method for the pull rings of easy-open bottle caps. Background technique [0002] The easy-pull bottle cap is a common beverage sealing device. Usually, in order to facilitate the drinker to open it, the manufacturer will set a pull ring on the easy-pull bottle cap to assist the opening of the bottle cap, so that the drinker can complete the beverage without using tools. bottle, however, since the pull ring of the easy-open end usually has a sharp cutting edge profile, it usually scratches the side wall of the mold during stamping, so when processing the pull ring, the manufacturer will use the punching method, Forming a gap between the trimming profile of the pull ring and the blank directly, but this method consumes a lot of material and is extremely uneconomical, so a solution is urgently needed to make the trimming profile ...

AI Technical Summary

Problems solved by technology

[0002] The easy-pull bottle cap is a common beverage sealing device. Usually, in order to facilitate the drinker to open it, the manufacturer will set a pull ring on the easy-pull bottle cap to assist the opening of the bottle cap, so that the drinker can complete the beverage without using tools. bottle, however, since the pull ring of the easy-open end usually has a sharp cutting edge profile, it usually scratches the side wall of the mold during stamping, so when processing the pull ring, the manufacturer will use the punching method, Forming a gap between the trimming contour of the pull ring and the blank directly, but this method consumes a lot of material and is extremely uneconomical, so a solution is urgently needed to make the trimming contour of the pull ring of the easy-open bottle cap and the blank have no gap and A solution to avoid scratches on the side walls of the mold can be achieved

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