SU1333659A1 - Rough set of moulds to rotary automatic machine for making glass articles - Google Patents

Abstract

The invention relates to glass industry, in particular, to the production of bottles of various assortment with the configuration of rotational bodies of variable cross section on glass-forming machines of the rotary type. The purpose of the invention is to reduce the mass of glass products while improving their quality and increasing productivity. The Chernov form is made up of two cones that are conjugate in diameters of small sections. The height of the first larger section combined in diameter with the throat ring of the cone is (0.35-0.65) N, where H is the height of the finished product without taking into account the height of its throat and the height of the bottom portion of the products. The diameters of the small sections of the cones and the larger section of the second cone are respectively 0.43-0.52 and 0.6-0.7 of the diameter of the finished product. Adjacent to a larger cross section of the second cone, the rough form section is made with a toroidal surface and a height of the section equal to 2-5 of the bottom thickness of the finished product. The toroidal surface is formed by rotating around the axis of a circular arc shape with a radius of 0.5 (cos sin sinof) the height of the toroidal portion. 2 Il. 2 tab. (L with: with 00 with and in CD

Description

113336592

The invention relates to beetroot. ka forms; h - toroidal height

the industry, in particular, to the production of bottles of various assortments with the configuration of rotational bodies of variable cross section on glass-forming automats of the rotor type.

The purpose of the invention is to reduce the mass of glass products while improving their quality and increasing the productivity of the product, and such parameters of the finished product. In FIG. 1 depicts profi black products as diameters of the product and its

new form kit; in fig. 2 - near the neck - D and D and bottom thickness “

general glassware

The crown shape is h tall

the throats are D and D and the bottom thickness is cf per bottle molding, for example milk bottles, with a capacity of 0.25; 0.5 and 1 l.

from mated small sections of truncated cone 1 with height h, combined with its large section with throat ring 2 (with a diameter of this section constituting 98 throat diameters of the finished product) and a truncated cone 3 with height h .. Adjoining to a larger section of the cone, the 3 part is made in the form of a toroidal section 4 with height h.

In the process of forming glassware, glass droplets of a certain mass with a constant periodicity are supplied by the feeder to the rough form through the inlet 5 located at the base of its toroidal section 4. Under the action of the glass melt supplied to the throat part of the vacuum form, the glass melts 2 and tight to the surface of the working cavity of the rough form. This ensures the design of the throat of the glassware and forms the so-called glass mass. The final distribution of t-temperature height

Glass mass bullets depend on the temperature level of the surface of the working cavity of the draft form and the nature of heat exchange between the pellet and the body of the rough form, determined by the profile of the working cavity of the latter.

The optimal values of the basic parameters of the rough form, namely: d - the diameter of the cross section for combining the first truncated cone and the neck ring; d, is the diameter of small sections through which the two truncated cones are mated; dg is the diameter of the larger cross section of the second truncated cone and the heights of the sections of the working height of the form; h is the height of the first truncated cone; h. - the distance from the small cross section of the second truncated cone to the beginning of the toroidal part is determined experimentally. The tests carried out for this purpose made it possible to establish a quantitative dependence of the indicated parameters of the rough form on the height of the finished product H, without taking into account the height of the neck of the product and the height of the bottom of the bottom.

throat - D and D and bottom thickness "

throat - D and D and the bottom thickness cf per bottle molding, for example, milk bottles, with a capacity of 0.25; 0.5 and 1 l.

The results of comparative tests of the proposed and well-known design; th draft form in the production of 0.5 l milk bottles on glass-forming machines VV-7.

Technical characteristic of production.

In the glass-melting bath furnace three pairs of burners, fuel - fuel oil. Productivity per welded glass mass 60 t / day.

Glass composition, wt.%: SiOo

NajO 4- KjO

CaO + MgO,

F-A SO,

71.4 14.3 11.5 2.3 0.25 0.25

Glass forming., Equipment.

Type of glass-forming automates BB-7; the number of machines installed on the furnace 3; average daily total productivity, the number of products per day per 0.5 l milk bottle, thousand pieces 48 ..

As follows from the table. 2 with a decrease in the height of the first one, combined with the neck ring of a truncated cone, TO a level less than 0.35 N

non-blown shoulders

ki, wrinkles. When this parameter is more than 0.65 N, the efficiency of the solution is reduced as a means of reducing the material intensity of the product. In addition, there is a defect in the bottom part of the product. When the cross-sectional diameter of the truncated cones is reduced to less than 0.43 the diameter of the finished product, the conditions for filling the throat part of the mold with glass melt worsen, which leads to a marriage - an underpressure of the throat. With the meaning of this

a parameter greater than 0.52 decreases the effectiveness of the solution as a means of reducing the material intensity of the product.

When the diameter of the larger cross section of the second cone is less than 0.6 of the diameter of the finished product, the conditions for filling the glass mold with a rough form with an increased likelihood of glass products rejecting the non-pressing of the neck, wrinkles and folds on the walls of the products deteriorate. When the value of this parameter is more than 0.7, the effectiveness of the proposed design of the rough form as a means of reducing the material consumption of the product decreases.

When the height of the section with a toroidal surface is less than 2 thicknesses of the bottom of the product, a bleed-type defect occurs. When this parameter is more than 5, the thickness of the bottom part increases, which leads to a corresponding increase in the material consumption of the product.

 As can be seen from the tables, the proposed design of a rough form during its operation on a glass-forming automatic machine of the BB-7 type reduces the material consumption of glassware (in particular, a 0.5 l milk bottle with an average of 412 to 380 g, i.e., 7.7% ) and increased productivity by increasing the yield of usable products and intensifying the work of glass-forming automats by 4-10% without manifestation of such typical types of rejects of products, which are usually observed when the power intensity of automatons is increased for a level above 38 drops of glass mass s per minute, throat and misalignment.

like a curve

Claims (1)

Invention Formula Draft formokomplekt to a rotary type machine for making glass products, including a form having a working cavity in the form of a body of rotation with variable and curvilinear sections at its height h equal to 0.93-0.96 N, where H is the height of the finished product without taking into account the height of its throat and the height of the bottom of the product, neck rings and bottom closure, characterized in that in order to reduce the mass of glass products while reducing their quality and increasing productivity, the working cavity is made of two cones conjugated in small diameters, 0.43-0.52 diameters D of the outer cylindrical part of the product, the height of the first of which is turned the diameter of the throat rings is 0.35-0.65 N, and the larger diameter of the second is 0.6-0.7 D, and the toroidal section adjacent to the second cone, formed by the rotation of the arc of radius 0 b, cos d sin (angle of inclination of the generators of the second cone to the plane perpendicular to the axis of the form, and hj - the height of the toroidal section is 2-5 thicknesses catfish equal to R where d on the product. 0.5 l milk bottle iJS R Compiled by V. Yudin. Editor N. Kishtulinets Tekhred L. Serdyukova Proofreader E. Roshko Order 3922/21 Circulation 427 Subscription VNIIPI State Committee of the USSR for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, Projecto st., 4 U8. 2