SU763278A1 - Parison mould - Google Patents

Description

one

The invention relates to a tool for generating wide-necked bottles, for example, for dairy products having the form of rotational bodies of variable cross section and can be used in 5 of the glass industry.

A rough form is known, having an internal working surface in the form of a body of rotation with a variable cross section, forming the configuration of a rough product — tO, l}. The known rough form does not allow to obtain high-quality products with increased productivity (40-50 drops / min) of glass-forming machines. The products are characterized by high 15 weight and low strength characteristics.

The known rough form, the configuration of which the inner working surface is a combination of 20 several zones, each of which is described by the equation of direct 2. In this form, the glass mass is distributed unevenly along the walls in the region of the throat and the bottom part. With further shaping of the finished product in the form of thickened annular layers are preserved, which leads to the appearance of local thickenings and thinning of the product wall, and the so-called feeder wave. On-30

The presence of the feeder wave creates inhomogeneities in the operational properties of the product and leads to an increase in its weight.

The aim of the invention is to reduce the weight of the bottles by uniformly distributing the glass and increasing the strength characteristics.

This goal is achieved by the fact that the profile of the internal working cavity of the draft form is described by the equation:

5-cl- "b -cx% d

Where

X - dimensionless coordinate along

shape axes with h step in mm;

y is the current coordinate perpendicular to the axis of the form vmm;

, c, d - coefficients.

from the container of the product and lying in:

the limits

a 18.9044-19.0586,

b 0,2369-0,6103,

with - 0,0247-0,487,

d 0,0011-0,0016;

h is a pitch depending on the capacity of the product and lying within 7-8.6 mm.

Claims (2)

FIG. 1 shows a general view of the rough form in the section in the current coordinates x and y; in fig. 2-5 - sectional form (technological sequence of manufacturing products). For a wide-mouth bottle with a capacity of 0.5 and 1 l, the above equation has the form: a) for 18.9042 0.23b9 x-0, -O.OOP X for O and X 25 25 with a step of 7 mm. In the current axes of coordinates (x is along the axis of the form, y is perpendicular to the axis of the form), obtained from the above equation, the values of k and y, mm:, 7. for 18.37, 18.47,, 7U2, 18.56 -, 7y. 18.63 - ". "" ". -. Chd 25, 7V25 27.35 form the profile of the internal, working cavity, draft form. To generate bootschips with a capacity of 0.5 liters, b) from 19.0586 + 0.6103 to - 0.0487x + 0.0016 X for O X if 2 5 with a pitch of 8.6 mm. In the current axes of coordinates (x is the axis of the form, y is perpendicular to the axis of the form), obtained from the equation 5 above; and y, wow; x O 8.6 y 19.05 x 1 8.6 y 19.62 X2 2 8.6 u-20.09 x 3 8.6 y. “20.49„ n „„ 8.6 Y2z 29.35 .X, j25 form the profile of the internal working cavity of the draft foreg-sh to produce bottles of capacity l. As can be seen from the above equations, the coefficients a, b, c, 6 by pitch are variable and depend on the bottle capacity. Due to the fact that the inner bach cavity 1 in the throat part corresponds to the shape of the drop 2 when the throat is pressed, it is reduced to the shape of the mold 3 of the rim 3. The recess 4 ,. forming in the upper part of the glass mass is insignificant. The glass is distributed evenly around the entire perimeter 4 of the bullets 5. This reduces to the maximum of the cause of the appearance of the feeder wave, creates optimal conditions for the secondary heating during the transfer from the rough to the toth form, and in the finishing form, the product is formed with the most varied distribution of glass on the body 6 of the product. Such a rough form with the specified internal working cavity allows reducing the weight of a wide-mouth bottle by 20-30%, improving the distribution of glass across the body, and using it with increased machine capacity (up to 50 drops / min). The authors carried out pilot tests on AB-6 machines in a glass factory. As a result of the test, the weight of the bottle was reduced by 15%, and the productivity of the glass-forming automat increased. Industrial tests on the lines showed an improvement in the operational properties of the bottles. The economic effect of using these draft forms on one machine was 15 thousand. Claims of the invention Chervov to an automatic machine for making butytyuk, having an internal working cavity B in the form of a body - rotation of a variable cross section, in contrast to that. In order to reduce the weight of the bottles by uniformly distributing glass and increasing the strength characteristics, the internal working cavity profile is described by an equation; y - a - bx - cx® d); , X is a dimensionless coordinate along:. . shape axes: in current, the coordinate is perpendicular to the shape axis in km; ai, b, CsC are coefficients depending on the capacity of the product and rejection in the preliminaries and 18.9044 -19.0586. L 0.2369-0.6103. from 0.0247 - 0.0487: d - 0.0011 - 0.0016 Sources of information received during examination for examination 1.Gladstuin I.E., Ginzburg I.A. for the production of glass from afar. M., 1366, p. 78 2. USSR author's certificate number 251783, cl. From 03 to 2/24, 1967 (prototype). fau.1 FIG. 2 phage.Z