MXPA99000730A - Deflector of internal chilled glass mass - Google Patents

Abstract

A baffle assembly for transporting gobs of molten glass to a glass forming machine is described, the baffle assembly having a longitudinally extending baffle formed from an appropriate metallic material, by molding, with a cross sectional configuration of a U from front to down. The deflector has a cooling passage formed internally of the metallic material and extending therethrough, the cooling passage being formed along the center line of the deflector and adjacent to the inlet or sine of the U. The deflector further comprises a thin-walled tube inserted into the cooling passage of the baffle, the thin-walled tube extends through the baffle and a coolant is circulated through the thin-walled tube to cool by this detecting

Description

BACKGROUND OF THE INVENTION Field of the Invention This invention relates to deflectors or baffles of the type used in the transfer of gobs of molten glass to a preform mold of a glass container making machine. of the individual section type ("IS"). More particularly, this invention is concerned with a "baffle of the aforementioned type having a passage or cooling passage formed integrally therein and extending therethrough.

Description of the prior art A system for feeding gobs of molten glass to the various sections of an I.S. machine. it is generally described in U.S. Patent 4,772,306 (Davey et al.), the disclosure of which is incorporated herein by reference. The system uses, for each mold cavity of each section of the I.S. machine. a fixed channel or conduit, inclined downwards, facing upwards receiving the gobs of molten glass in sequence, from an oscillating bucket oscillating between a plurality of such conduits to feed the gobs of molten glass in each of them . The REF. 29346"glass handles" emerge from an outlet of each conduit and then pass to a fixed device, called a baffle, which faces downward and is curved downward to its outlet to guide the gobs of molten glass as they pass. from the duct to a preform mold of the I machine section. It is desirable to cool at least some of the deflectors in a glass mass feed system of the IS machine to reduce the coefficient of friction between the baffle (s) and the goblet masses of molten glass passing therethrough, thereby accelerating the passage of the masses of molten glass through the cooled baffle (s) and by this will more accurately control the arrival times of gobs of molten glass to the mold cavity of the section of the IS machine to which they are directed, this is especially important in IS machines with a large width. of sections, such as eight or even ten sections, since the travel paths of the mass of molten glass to the molds in the outermost of such sections are considerably longer than the travel paths to the inner sections of the machine of IS So far, it has been proposed to cool the deflectors of the glass masses of the I machine. S. by adding cooling tubes or other elements to the interior thereof, but the addition of such cooling elements complicates the manufacture of the baffle and also adds to the expense thereof; consequently this arrangement has not gained wide acceptance.

BRIEF DESCRIPTION OF THE INVENTION In accordance with the present invention, an internally cooled baffle is provided for use in the sequential transfer of gobs of molten glass to a preform mold of a section of a glass forming machine of I.S. The baffle according to the invention is formed by molding an appropriate metallic material, for example cast iron or an aluminum alloy and is provided with a passage or cooling passage extending longitudinally therethrough by incorporating a tube or center in the mold used to melt or mold the baffle. The baffle thus has an internal cooling passage or passage as molded and does not require extra elements to be added to the exterior of the baffle to obtain an appropriate degree of cooling. The use of such a deflector, when provided with means for causing the cooling air to pass through the internal passage thereof, serves to present the masses of glass in the mold of the preform of the section of the machine of I- .S. in a more closely controlled program or schedule, which helps to improve the consistency of the quality of the containers that are - formed from the masses of glass that pass through the baffle. Thus, it is an object of the present invention to provide an improved baffle for use in the transfer of gobs of molten glass to a preform mold from the section of the glass vessel forming machine of I.S. More particularly, it is an object of the present invention to provide a deflector of the prior character having a flow passage of the refrigerant which extends completely through the interior of the deflector. For a further understanding of the present invention and the objects thereof, attention is drawn to the drawings and the following brief description thereof, to the detailed description of the preferred embodiment and the appended claims.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is an end view of a baffle according to the preferred embodiment of the present invention; and Figure 2 is a sectional view taken on line 2-2 of Figure 1.

Description of the preferred embodiment A baffle according to the preferred embodiment of the present invention is identified by the reference number 10 in the drawings and as shown in figure 2, the baffle 10 extends longitudinally from an inlet end 10a to an output end 10b. The inlet end 10a of the baffle 10 receives molten glass gutiform masses from a conduit or channel (not shown) of a gobbled glass melt feed system and the gobs of molten glass pass from the outlet end 10b of the baffle 10, which is positioned in use below the inlet end 10a, to a preform mold (not shown) of a glass forming machine of I.S.

As shown in Figure 1, the baffle 10 has the cross-sectional configuration of a U facing down and as shown in Figure 2, the baffle is curved at an ever-decreasing radius of curvature as it approaches its outlet end 10b for retaining the masses of molten glass passing therethrough by centrifugal force, although the masses of glass would otherwise be free to fall from the detector 10 due to its U-shaped cross-sectional configuration from front to down. The baffle 10 is formed by molding from a material having the ability to withstand repeated contact with the masses of molten glass, whose temperatures, for the types of soda-lime-silica glass compositions which are widely used in the The manufacture of glass containers for various food and beverage packaging applications can be of the order of 1093 ° C (2,000 ° F). In this regard, the formation of deflectors of the prior art from cast iron or a molten aluminum alloy is known and it will be understood that deflectors corresponding to the present invention can be formed by molding from either one or the other of such materials. The baffle 10, which is provided with spacing lugs 12 spaced apart along its length to facilitate assembly of the baffle 10 is a fixed position relative to a preform mold of the IS machine section, has a passage integral 14 extending along the central line of the deflector 10 and adjacent to the cove sine or vertex of the U of its cross sectional configuration. Cooling air is caused to pass through passage 14, for example, by inserting a thin-walled cylindrical tube 16 into passage 14 and extending completely therethrough, the cylindrical tube. 16 is provided with filaments 18, 20 near the inlet end 10a and the outlet end 10b of the baffle 10 respectively. By passing the cooling air through the cylindrical tube 16, the baffle 10 will be cooled "to thereby reduce the coefficient of friction of the baffle 10 to the passage of the gobs of molten glass in contact with it, which will reduce by this the residence times of the masses of molten glass in the deflector 10. Although the best mode contemplated for carrying out the present invention with respect to the date of presentation thereof has been shown and described herein, it will be evident for those skilled in the art that appropriate modifications, variations and equivalents can be made without departing from the scope of the invention, such scope is limited only by the terms of the following claims and the legal equivalents thereof. It is noted that, in relation to this date, the best method known to the applicant to carry out the aforementioned invention, is that which is clear from the present description of the invention. Having described the invention as above, property is claimed as contained in the following:

Claims (12)

1. Claims 1. A longitudinally extending baffle for feeding masses of molten glass to a glass forming machine, characterized in that the baffle has a cross-sectional configuration of a U facing downward and being formed of a metallic material-- appropriate by molding, the baffle has a cooling passage formed internally of the metal material and extending longitudinally therethrough. The baffle according to claim 1, characterized in that the cooling passage is positioned along a central line of the baffle and adjacent to an inlet of the U of its cross-sectional configuration. The baffle according to claim 2, characterized in that the baffle has an inlet end and an outlet end and has a curved portion downwardly at its outlet end. 4. The baffle according to claim 3, characterized in that the metallic material is selected from the group consisting of cast iron and molten aluminum alloys. A method for transferring gobs of molten glass to a glass forming machine, characterized in that it comprises: providing a longitudinally extending baffle having a cross-sectional configuration of a U facing downwardly; passing the gobs of molten glass, in series, through the baffle in contact with the baffle; and cooling the baffle while the gobs of molten glass are passed through it by passing a coolant longitudinally through a passage formed internally in the baffle. 6. The method of compliance with the claim 5, characterized in that the deflector is formed by molding an appropriate metallic material and wherein the passage is formed from the appropriate metallic material. 7. The method of compliance with the claim 6, characterized in that the appropriate metallic material is selected from the group consisting of cast iron and molten aluminum alloys. The method according to claim 7, characterized in that the refrigerant is passed through the baffle along its central line and adjacent to a cove or sine of the U of its cross-sectional configuration. 9. A baffle assembly for feeding gobs of molten glass to a glass forming machine, the baffle assembly is characterized in that it comprises: a longitudinally extending baffle having a cross-sectional configuration of a U facing downwardly and which is formed from an appropriate metallic material by molding, the baffle has a passage formed within the appropriate metallic material and extending longitudinally therethrough; a tube with thin walls in the passage and extending through it; and means for causing a refrigerant to flow through the tube from an inlet end of the tube to an outlet end of the tube. A baffle assembly according to claim 9, characterized in that the passage is positioned along a central line of the baffle and adjacent to an inlet or sine of the U of its cross-sectional configuration. A baffle assembly according to claim 10, characterized in that the baffle has an inlet end and an outlet end and has a downwardly curved portion at its outlet end. A baffle assembly according to claim 11, characterized in that the metallic material is selected from the group consisting of cast iron and molten aluminum alloys.