SU1255593A1 - Method of shaping glass articles - Google Patents

Description

" .one

The image relates to the methods of shaping glassware and mock-ups on glass plants.

The purpose of the invention is to improve the quality of glassware by ensuring uniform distribution of the glass melt.

The supply of water-air mixture into the cavity of the workpiece during the entire period of holding in rough form contributes to the formation of a thin frozen surface film. The film fulfills the role of the framework and keeps the rest of the glass mass in the wall and bottom from the flow during the period of holding the blank in the rough form and in the process of transferring it to the final form. As a result, the reasons for the formation of the different widths of the walls of the molded products are eliminated.

Controlling the flow of water in the water-air mixture, depending on the volume of the inner cavity of the workpiece, ensures the formation of a surface film of sufficient thickness and maintaining low pressure values due to vaporization. .

The free flow of the resulting vapor-air mixture from the cavity of the workpiece into the environment eliminates the possibility of an excessive increase in pressure during the formation of steam.

An example. The proposed method is implemented on a vacuum vy.tsevny glass-forming machines.

A droplet of glass melt with a temperature of 1050-1150 ° C from the feeder falls into a rough mold. During its filling, a vacuum begins to act in the throat part of the mold, which stops after the design of the neck of the product has been made. The plunger forming the pin in the throat part of the workpiece is retracted

Editor I. Derbak

Compiled by V. Yudin Tehred A. Kravchuk

Order 4782/27 Circulation 457. Subscription VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raugaska nab. 4/5

Production and printing company, Uzhgorod, st. Project, 4

0

five

0

VM2

Then, the internal cavity of the workpiece begins to be nuzzled by supplying compressed air with a pressure of (0.7–1.5) 10 P / m through the plug of the plunger into the pin. At the end of the blowing process, a fine water-air mixture is fed into the formed cavity of the billet, regulating the water flow within 25-65 g. Water consumption is prescribed depending on the capacity of the manufactured products, for example, for a beer bottle of 0.5 liters, 25 g are taken. Water-air mixture is fed into the cavity during all the subsequent, after blowing it out, the period of aging in a rough form. The holding period of the preform for a beer bottle 0.5 l is 4 s. Contacting the water-air mixture with a temperature of 25-30 ° C with the surface of the inner cavity of the workpiece, having a temperature of 1050 ° C, leads to intensive cooling of it to 825 C and vaporization. As a result of cooling, the surface of the preform cavity is covered with a thin, thin film — a skeleton. The steam mixture is removed from the cavity through the throat opening of the preform to the environment.

At the end of the exposure of the preform in rough form, it is transferred to the final form, where the final blowing of the product takes place. After removal from the finishing form, the product enters for annealing.

Using the proposed solution will allow to obtain a uniform distribution of the glass melt in the product, and due to this, to reduce the average thickness of the wall bar. He took into account that the production of glass containers is massive, reducing the wall thickness and, consequently, the weight of the product will provide significant savings in material and fuel and energy resources.

five

0

five

Proofreader M. Pojo

Claims (1)

METHOD FOR FORMING GLASSWARE, including feeding glass mass into a draft mold and blowing the workpiece in it with compressed air, holding it in draft form at overpressure, transferring the workpiece to the finished mold, final blowing the glass product and annealing it, characterized in that, for the purpose of improve the quality of glass products by ensuring a uniform distribution of glass melt, 25-65 g of water are fed into the cavity of the product blank during exposure, depending on the volume of the glass product s. simultaneous removal of the water-air mixture. I 255 59 1