Glue scraping and discharging device and method for unscrewing cover

Abstract

The invention discloses a glue scraping and discharging device and method for unscrewing covers. The glue scraping and discharging device comprises a cover conveying device and a glue conveying devicewhich are arranged in parallel, wherein the cover conveying device comprises a cover supporting plate and a cover conveying star wheel provided with a plurality of cover containing notches, the glueconveying device comprises a glue particle extrusion mechanism and a glue discharging rotating wheel, a plurality of glue discharging rods capable of sliding up and down are arranged along the periphery of the glue discharging rotating wheel, an annular sliding way with a concave section is arranged around the periphery of the glue discharging rotating wheel, an air blowing nozzle is arranged above the glue discharging rotating wheel corresponding to the concave section, the glue discharging rod comprises a tubular glue scraper and a transverse rod perpendicular to the tubular glue scraper, anrolling wheel matched with the annular sliding way is arranged on the transverse rod, a pneumatic shaft is arranged in the tubular glue scraper, a piston is arranged at the upper end of the pneumaticshaft, a glue pushing head is arranged at the lower end of the pneumatic shaft, and a reset spring is arranged between the piston and the inner wall of the tubular glue scraper. According to the gluescraping and discharging device, the problems of wrinkles, glue shortage and too thick glue layer of glue layers of the unscrewing covers can be effectively solved, and the practical value is very high.

Description

technical field [0001] The invention relates to the technical field of twist-off cap production, in particular to a scraping and unloading device and method for twist-off caps. Background technique [0002] In the production process of the twist-off cap, it is necessary to fill the rubber layer in the twist-off cap to seal and prevent leakage between the twist-off cap and the container mouth, that is, before the twist-off cap rubber pad is molded, a certain amount of Glue is fed into the cover body. The existing method usually uses a tubular scraper to scrape off the rubber particles, and then blows the rubber particles into the twist-off cap through the air nozzle. This method mainly has the following problems: First, the rubber particles are affected by the air flow and the temperature is lowered. After molding, it is easy to form pleats on the rubber pad, which affects the sealing performance; second, the rubber particles are pushed away from the tubular scraper by the a...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the twist-off lid scraping and unloading device of the prior art adopts air flow blowing glue, which easily leads to wrinkles, lack of glue or excessive thickness of the glue layer of the twist-off lid, and provides a twist-off lid The advanced scraping and unloading device and scraping and unloading method can effectively solve the problems of wrinkling, lack of glue and over-thickness of the glue layer when the cover is unscrewed.

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