SU899502A1 - Apparatus for molding profiled glass products - Google Patents

Description

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The invention relates to the building materials industry, in particular, to structures for the manufacture of profiled glass products by the method of continuous rolling and can be used in the glass industry.

A device for shaping profiled glassware is known, comprising a rolling machine, which forms a tool with an inlet, the dimensions of which are equal to the width of the sweep of a given profile and the outlet, the configuration of which corresponds to the profile of a molded part, which is made up of a half-mold and liner, the narrowed end of which has the configuration of a part of a given profile ,

The closest in technical essence and the achieved result to the proposed is a device for forming profiled glassware, including rolling shafts, forming a device of nozzles and half-forms, installed one after the other after the rolling shafts and liner 2,

A disadvantage of the known devices is the complexity of forming articles with different angles in cross section, for example a triangular profile. To form such products, it is necessary to bend plastic glass tape under

1 angles greater than 90, This complicates the configuration of the forming devices, which leads to an increase in the length of the half-molds. The glass ribbon, which is in a half-mold of considerable length, cools, loses ductility, the formation of products becomes more complex, and their quality deteriorates significantly.

The purpose of the invention is to increase the range.

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The goal is achieved by the fact that in the device for forming profiled glassware, including rolling shafts, forming the adaptation of the nozzles and half-molds installed one after the other after the rolling shafts, and the liner nozzles are installed with the possibility of longitudinal and transverse movement from the drive, and their working surface parabolic with increasing parameter.

FIG. 1 shows a device for forming shaped glassware in axiom, general view; in fig. 2 - device plan; in fig. 3 nozzle, general view.

The device for forming the profiled glassware consists of the nozzle 1, half-molds 2, - liner 3, installed on the roller table A after the rolls 5) rolling continuous glass 7 from glass melt 6, which is molded in the closed profile with the aid of the device proposed. a bench table with the possibility of longitudinal and transverse movements relative to the axis of the rolled glass ribbon. The longitudinal movement can be carried out by moving them along the frame 9 in the groove 10 and securing them with screws 11, transverse with screws 12 and the handle 13. Other devices for moving the nozzles are possible.

The nozzle 1 has a working surface 1 of parabolic shape with a parameter increasing along the movement of the glass melt. The parameter of the parabola of the DM is greater than AB, i.e. the parabola is more steep in the SD section than in the AB section. The nozzle must be installed in such a way that the plastic glass tape first enters the section AB.

The device works as follows.

The glass melt 6 is rolled by the rollers 5 into a continuous ribbon of glass 7. The plastic ribbon of glass enters the nozzle 1.

The parabolic shape of the working surface of the nozzles contributes to the gradual bending of the glass ribbon. In this case, the bend on both sides of the tape may be the same, which is necessary when forming the majority of the product1 or different for some products of a very complex section. The bending of the plastic glass ribbon is due to the location of the nozzle relative to the half-form, mill rolls and the longitudinal axis of the glass ribbon, as well as the shape of the working surface of the nozzle. By shifting the nozzle, you can increase the bending of the glass ribbon. This can be achieved with a steeper shape of the outlet of the working surface of the nozzle. The longitudinal movement of the nozzle makes it possible to select the optimal temperature and viscosity conditions for the preforming of plastic glass.

The glass ribbon is bent by the nozzle and enters the molds 2, compresses 5 the insert 3 and forms the product of a given profile 8, which rolls k to the annealing furnace (not shown).

The advantage of the proposed forming device is the presence of

nozzles with a parabolic working surface, which pre-form the glass ribbon. Due to this, the molds come in not flat, but largely molded tape. This allows for easier molding conditions, shortening the length of the half-molds, which makes it possible to form products of complex shapes, where it is necessary to bend the glass ribbon at angles greater than 90.

The parameters of the parabolic working surface of the nozzle should be chosen in each individual case depending on the width of the rolled glass ribbon, the shape and size of the products, the temperature and viscosity of the molding, the length of the nozzle and half molds and other factors. The nozzle can be made of various materials, such as cast iron, heat-resistant steel, refractory materials, graphite.

Example. A device for forming a profile glass of triangular cross section consists of two nozzles made of graphite, each 350 mm long, with a parabolic working surface. Parameters of the parabolic surface of the nozzle are the same when the tape enters the nozzle;

5 height of nozzles 200 mm. Triangular insert with base length 230 mm, height 90 mm, half-form 400 mm long, height 300 mm. The forming device is made of graphite. The width of the glass ribbon entering the molding device (mm temperature 980 °, rolling speed 90 m / h.

With the help of the proposed device, a profile glass of triangular cross section with a width of 250 mm, a height of 100 mm and a composition of glass SiOi A12.0 3 CaO MgO 71, U 1.0 0.1 9.5, Q 13.5

Tests of the proposed devices were carried out at the Mossothermocombinate. Using it allows you to mold products of complex configuration, such as a triangular section.

The economic effect from the use of such products is significant. According to preliminary data, the use of shaped glass of a triangular cross section molded on the proposed device provides an economic effect in the order of 0.4-0.6 rubles. on 1 m

Claims (2)

1. USSR author's certificate N, cl. From 03 To 13/02, TEB. 2. The patent of Switzerland If 498053, cl. From 03 To 13/00, 1970.