A preliminary mold for manufacturing small-diameter glass bottles based on the blow-blow method

Abstract

The invention relates to a primary die for manufacturing a small-bore glass bottle based on a blow-blow method. The end of a cylinder corresponding to the structure of the glass bottle, the neck and the body of the circular truncated cone and the circular arc bottom of an inverted trapezoid are coaxial and are integrated so as to form the primary die, and the diameter of a puffing hoop area is greater than the diameters of a tail end circular truncated cone top surface and a secondary end circular truncated cone bottom surface. According to the primary die, the problem of thin wall caused by a puffing hoop, which workers in the field always try to solve, is solved through the change of the body shape of the primary die, namely, thickening of the diameter of the puffing hoop and a loading line part, so that the mechanical strength of the glass bottle prepared by the primary die is improved, and the explosion rate of the glass bottle is lowered; high quality glass bottle can be guaranteed to be manufactured through the blow-blow method, and the manufacturing cost is greatly lowered.

Description

technical field [0001] The invention relates to a mold for a glass bottle, in particular to a preliminary mold for a glass bottle with a small mouth. Background technique [0002] At present, in the glass industry, the glass bottle production process is mainly divided into blow-blowing and pressure-blowing. Press-blow method In the production process, the prototype of the glass bottle mouth is stamped and formed by a punch, and there is no process of blowing. Since there is no puffing, there will be no puffing hoop on the bottle wall, and the bottle wall is very uniform. However, the pressure-blow method is mainly used to produce large-mouth bottles, and its equipment cost is relatively high, so it cannot be widely used in the production of small-caliber glass bottles in China. The existing production of small-diameter glass bottles mainly adopts the blow-blow method, which is to drop the material drop into the initial mold, and form the mouth of the bottle and the prototy...

AI Technical Summary

Problems solved by technology

[0003]Using the above-mentioned primary mold, the first puff of air will easily form an indelible air hoop on the bottle wall, and the thickness of the air hoop is at least 1.5 thinner than other parts -2 mm, does not meet the requirements of the thickness ratio in the glass bottle quality standard, affects the mechanical strength of the glass bottle, and is the main reason for the bursting of beer bottles and carbonated beverage bottles

Since the initial mold is the place where the prototype blank is formed, the shape of the initial mold plays an important role in the molding of glass bottle products. The thin wall caused by blowing the blowing hoop is a difficult problem that practitioners have been trying to overcome

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