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US 6,497,119 B1Granted
Method for producing glass goblets, tumblers and similar hollow glasses, and corresponding device for carrying out said method
AssigneeSchott Glas
InventorsRobert Hartel, Josef Molz, Michael Horina, Edwin Kreiss, Alois Gruber, Kurt Heller
Life of this patent
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Abstract
A device and process for forming hollow glassware comprising producing solid glass blanks in a manufacturing line, storing the blanks, feeding the blanks to a manufacturing line for forming hollow glassware, preheating the blanks during the feeding step, supplying the preheated blanks to a heating stage, heating to form solid plastically deformable glass globs, transferring the glass gobs to a blow molding stage and blow molding the glass gobs supported by a bottom lifter in a blow mold.
Claims36
A device for producing hollow glassware (1), said hollow glassware (1) including stemware and tumblers, said device comprising a manufacturing line for making semifinished products (2) consisting of solid glass blanks;
- a manufacturing line for forming the hollow glassware from the semifinished products (2) which is separate from the manufacturing line for making the semifinished products (2) and a storage and supply stage (BV) with storage devices for storing the semifinished products produced in the manufacturing line for making the semifinished products and with transport devices for automatically supplying said semifinished products (2) from the storage devices to the manufacturing line for forming the hollow glassware;
- wherein said manufacturing line for forming the hollow glassware from the semifinished products comprises a blow molding stage (BF, KE), said blow molding stage comprising a blow head (9) with a blow work ring, a blowing unit (10), a blow mold (11) and a bottom lifter (12) and in which plastically deformable glass gobs are shaped to form the desired hollow glassware;
- a removal stage (BE, KE) for removal of the hollow glassware (1) from the blow molding stage and for delivery to subsequent processes, said removal stage (BE,KE) comprising removal devices (15,17);
- a preheating stage (VW) with heating devices (4, 4a) for preheating the semifinished products (2) supplied thereto from the storage and supply stage (BV);
- a semifinished product heating stage (HE) with heating devices (8) for further heating of the semifinished products (2) at least to a temperature close to a blowing temperature;
- a transport stage (HB) with transport devices (5, 5a, 6, 7) for transporting the semifinished products (2) from the preheating stage (VW) to the semifinished product heating stage (HE);
- and a transfer stage (ÜE) with devices for transferring the semifinished products (2) after the further heating in the semifinished product heating stage (HE) into the blow molding stage (BF, KF), where the semifinished products (2) are available as said plastically deformable glass gobs for blow molding to form the hollow glassware.
4 more elements
A method for producing hollow glassware (1), said hollow glassware (1) comprising stemware and tumblers, by blow molding plastically deformable solid glass gobs, said method comprising the steps of:
- a) making a plurality of solid glass blanks in the form of fabricated semifinished products (2) in a manufacturing line for making the semifinished products (2);
- b) storing said semifinished products produced in step a) in a storage and supply stage (BV), said storage and supply stage (BV) including storage devices for storing and transport devices for supplying the semifinished products;
- c) automatically feeding the semifinished products (2) from the storage and supply stage (BV) to a manufacturing line for forming the hollow glassware from the semifinished products by means of the transport devices provided in the storage and supply stage (BV), said manufacturing line for forming the hollow glassware from the semifinished products being separate from said manufacturing line for making the semifinished products;
- d) preheating the semifinished products (2) supplied during the feeding of step c) with heating devices (4,4a) in a preheating stage (VW) of the manufacturing line for forming the hollow glassware from the semifinished products;
- e) supplying preheated semifinished products (2) from the preheating stage (VW) to a semifinished product heating stage (HE) for further heating by means of transport devices (5, 5a, 6, 7) of a transport stage (HB);
- f) heating the semifinished products (2) to blowing temperature to form the plastically deformable solid glass gobs in further heating devices (8) in the semifinished product heating stage (HE) of the manufacturing line for forming the hollow glassware from the semifinished products;
- g) transferring the glass gobs from the semifinished product heating stage (HE) to a blow molding stage (BF,KF) for shaping to form the hollow glassware (1) by means of transfer devices ({overscore (E)}), said blow molding stage (BF,KF) comprising a blow head (9), a blowing unit (10), a blow mold (11) and a bottom lifter (12);
- h) blow molding of said glass gobs supported by the bottom lifter (12) in the blow mold (11) to form the hollow glassware (1);
- and
- i) removing the hollow glassware (1) from the blowing unit (10) and the blow mold (11) and delivering the hollow glassware to subsequent processes by means of removal devices (15,17) of a removal stage (BE,KE).
7 more elements
Dependencies are inferred from the claim text.