SU1418294A1 - Mould for mollifying sheet glass - Google Patents

Abstract

The invention relates to the industry of building materials, in particular to the glass industry, and can be used in the manufacture of molds for bending sheet glass. The purpose of the invention is to improve the quality. In a sheet bending form. glass, including a metal base in the form of a truncated cone, the forming surface of which includes the bottom and side parts, the angle between the latter is oi. 45 ° + KR, where R is the radius of the glass product, mm, K is the empirical coefficient Q $ equal to 1.5 deg / mm. 1 ill., 1 tab. . (L

Description

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Yu

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The invention relates to the manufacture of building materials, in particular glass manufacturing, and can be used in the manufacture of molds for bending sheet glass.

The purpose of the invention is to improve the quality of glassware.

The drawing shows a schematic view of the shape for bending sheet glass,

The form has a metallic base-- outside Ij made in the form of a truncated cone including side 2 and bottom 3 parts, forming an angle ot-4 between them.

Glass mold 5 is placed in the mold, which, during the bending process, is moved to position 6,

Using the proposed form, glassware was manufactured that has different radii (table), including rosettes of plates, dishes that make up desserts for serving the table,

For the manufacture of glassware, metal bending molds were made, the angle between the side and bottom parts of which was made in accordance with. by the equation oi. 45 + + K Rs where R is the radius of the manufactured product (table), K., 5 deg / mm

In the process of making glass products from flat glass, glass cuttings are cut - discs in accordance with the diameter of products made from

Steklozagotovka 5 and the form of a disk set on the edge of the form and subjected to heat treatment; in the process of rising, the temperature bends the disk and the desired product is obtained 6 "

The proposed shape of the upper part of the cone gives the direction of the molded glassworking disk, and the creation of an air cushion in the corners of the transition from the side of the form to the bottom reduces the contact of glass with metal, which reduces the defects on the surface of glass products, increases the decorativeness of products, their marketability, ensures the stability of the geometry .

The yield of usable products using the form for bending the proposed construction is 95%, while using forms that are known:

designs yield of products

60% 0

When carrying out the molding process using a truncated cone shape, in which the angle between the lateral and bottom parts exceeds the proposed oi. (45 + + ls, 5 R) s, the nature of the deflection of the glass blank is such that the path of contact of the glass preparation with the side part of the mold is extended, which leads to an increase in defects on the side surface of the spruce,

the geometry of the product, including the reduction of the bottom area, i.e. reduce the stability of the product, reduces art expressiveness. As can be seen from the table, the percentage of yield of products at an angle of ° C (45 + 1.5 R) is 85%.

 When using a mold with an angle of ei. “(45-4-5.5 K) conditions are created for the point wedging of glassmaking, which leads to the formation of chipping and different height of glassware, the geometry of the product is disturbed. With this form design, the yield of products is 75%. .

Thus, the proposed form for bending the glass products of the furnace is improving the quality of the products and the stability of their geometry. Improving the quality of the glass surface yaenHMHsaet thermomechanical properties on glassware, which in turn increases the percentage of usable products and the life of the product, increases decorative design and presentation.

thirty

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90

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90 92 95 91

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Table continuation

80

80

  80

(known)

oC (45 + l, 5R)

to"

". (45 + l, 5R)

Claims (1)

Formula invented n A sheet glass bending mold, including a metal under spoon, characterized in that. in order to improve the quality of glass parts, the substrate is made in the form of a truncated cone, in which the angle at the base is determined by the dependence 0 45 ° + KR, where R is the radius of the glass, mm; K is an empirical coefficient equal to 1.5 degrees / mm. Compiled by L.Golubeva Editor AoShandor Tehred L.Oliynyk Proofreader V.Girn Order 4120/25 Circulation 425 VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Subscription