Device for manufacturing hollow glass articles

Abstract

A device for manufacturing hollow glass articles, namely an IS machine, includes a plurality of adjacent stations (3), which form a row and respectively accommodate at least one blank mold that encloses a mold cavity, the inner walls of which have to be coated with a lubricant in accordance with a defined spray pattern by means of a spraying device (8) that can be moved along the row during the course of the glass forming operation. In order to ensure a reproducible spray pattern, a calibration station (10) is provided and equipped with a test mold (12), wherein the spraying device (8) can be displaced up to an inspection position, in which it is arranged opposite of the calibration station (10), in order to verify the correct function of a lubrication process based on a spray pattern in the test mold (12) and, if necessary, to correct the lubrication process.

Claims

1. An individual section machine for manufacturing hollow glass articles, comprising: a plurality of stations arranged adjacently in a row, each of which having at least one blank mold which has a mold cavity; a spraying device which can be displaced along the row of stations and stopped in discrete working positions that are respectively assigned to said stations to apply a lubricant on inner sides of the mold cavity of said blank mold; a first housing; a manipulation element having one end mounted within said first housing and another end to which the spraying device is fastened, said first housing configured for guiding adjustment tools for adjusting said spray pattern; and a calibration station configured to inspect and adjust a spray pattern that represents the distribution of the lubricant in a defined surface area on the inner walls of the blank mold, wherein: the spraying device is displaceable into an inspection position assigned to the calibration station; the first housing is displaceable along the length of the individual section machine to the inspection position where it is arranged opposite of the calibration station; and the calibration station includes: a test mold, said test mold disposed to be in a position relative to said spraying device when the spraying device is in the inspection position which corresponds to the position of the spraying device relative to a said blank mold in a working position; at least one camera or a measuring device for measuring a spray pattern in only the test mold and at least one parameter of a lubricant layer within the spray pattern in only the test mold; and a second housing which is open toward the first housing when the first housing is in the inspection position and otherwise is closed.

2. The individual section machine according to claim 1, wherein the test mold consists of two mold halves that can be pivoted between an open and closed position.

3. The individual section machine according to claim 1, wherein the second housing at least partially comprises a screen.

4. The individual section machine according to claim 1, wherein the test mold consists of two mold halves that can be pivoted between an open and closed position.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The invention is described in greater detail below with reference to the attached drawings. In these drawings:

(2) FIG. 1 shows an illustration of a lateral end section of a glass forming machine in the form of a top view;

(3) FIG. 2 shows an illustration according to FIG. 1 in the form of an enlarged view;

(4) FIG. 3 shows a partial side view of the glass forming machine along the viewing direction III in FIG. 2;

(5) FIG. 4 shows a view of the end section of the glass forming machine along the viewing direction IV in FIG. 1;

(6) FIG. 5 shows an illustration according to FIG. 3 in the form of an enlarged view; and

(7) FIG. 6 shows a partial view along the plane of section VI-VI in FIG. 1.

DETAILED DESCRIPTION

(8) The description initially refers to the drawings in FIGS. 1 to 3.

(9) In these figures, the reference symbol 1 identifies a glass forming machine, namely an IS machine, in the machine frame 2 of which a plurality of stations 3 are mounted, wherein multiple blank molds are respectively accommodated in said stations. The stations 3 are arranged adjacent to one another and a rail-like guide 4, which is mounted on an upper region of the machine frame 2, extends on the side of the machine frame 2 carrying the blank molds.

(10) The guide 4 extends parallel to a supporting surface of the glass forming machine 1 and a housing 5, which can be displaced from one end of the guide 4 to its other end in a motor-driven fashion, as well as locked in any intermediate position, is attached to said guide, wherein this motor-driven displacement of the housing is not illustrated in the drawings. For this purpose, the housing 5 is provided with two brackets 6, 7 that are engaged with the guide 4.

(11) The housing 5 serves, among other things, for accommodating a spraying device 8 that is arranged on the free end of a multi-section manipulation element 9. The manipulation element 9 can be pivoted between an inactive position, in which it is largely retracted into the housing 5, and an active position, in which the spraying device 8 is suitably arranged for transferring a lubricant on the inner surfaces of a blank mold. A not-shown drive is assigned to this pivoting motion and connected to a machine control of the glass forming machine 1 such that the pivoting motion can be carried out in a motor-driven fashion. In other respects, the manipulation element 9 is designed with as many axes of motion as required for realizing a sufficient mobility for carrying out the spraying process, particularly for positioning the spraying device 8.

(12) The following portion of the description additionally refers to the drawings in FIGS. 4 to 6, in which functional elements corresponding to those in FIGS. 1 to 3 are identified by the same reference symbols and therefore do not require a detailed description.

(13) The guide 4 extends beyond a lateral end of the glass forming machine 1 up to a calibration station 10 and is arranged such that the housing 5 can be displaced into an inspection position, in which it is arranged opposite of the calibration station 10 and can interact therewith. The calibration station 10 consists of a housing 11, which also may be at least partially realized in the form of a protective screen that is open toward the housing 5, but otherwise closed.

(14) The housing 11 contains a test mold 12 that structurally corresponds to the blank molds installed in the glass forming machine 1. With respect to its height and orientation relative to the housing 5, the position of the test mold 12 furthermore corresponds to that of the blank molds of the glass forming machine 1.

(15) The calibration station 10 may be additionally equipped with a not-shown camera or another measuring system that is designed for measuring and evaluating the distribution of a lubricant layer on the inner side of the mold cavity of the test mold 12 in connection with a computer-assisted evaluation system, particularly an image processing system. The housing of the calibration station 10 is not illustrated in FIG. 5 in order to provide a better overview.

(16) The result of such an inspection of a lubricant layer applied on the aforementioned inner sides of the test mold 12 can be used in many different ways. This inspection particularly includes a spray pattern, the layer thickness of a transferred lubricant layer, its uniformity and position on the inner sides of the test mold 12, etc. In this way, misadjustments of the manipulation element 9 in the housing 5 and of the spraying device 8 arranged thereon, as well as defects such as, e.g., the partial blockage of outlet openings of the spraying device 8, can be detected and corrected in order to resume the regular operation of the glass forming machine 1 with a lubrication system that functions correctly in every respect.

(17) The result of such an inspection can particularly be used for optimizing a spray pattern, namely with respect to the most advantageous lubricant layer thickness and lubricant layer distribution on the inner walls of the blank mold for realizing an optimal gob distribution in the blank mold.

(18) The test mold 12 consists of two mold halves analogous to the blank molds and is preferably in an open position during the described inspection process.

(19) The preceding description shows that the arrangement of a calibration station 10 on a glass forming machine 1 makes it possible to reliably verify the correct function of the spraying device 8, as well as its manipulation element, based on an evaluation of the detected spray pattern such that, for example, adjustments can be corrected and defective components can be repaired or replaced in order to realize a functionally appropriate spray pattern, on which the operation of the glass forming machine can subsequently be based.

REFERENCE LIST

(20) 1 Glass forming machine 2 Machine frame 3 Station 4 Guide 5 Housing 6 Bracket 7 Bracket 8 Spraying device 9 Manipulation element 10 Calibration station 11 Housing 12 Test mold