DE19641173A1 - Glass pressing process for manufacture of articles with undercut portions - Google Patents

Glass pressing process for manufacture of articles with undercut portions

Info

Publication number
DE19641173A1
DE19641173A1 DE1996141173 DE19641173A DE19641173A1 DE 19641173 A1 DE19641173 A1 DE 19641173A1 DE 1996141173 DE1996141173 DE 1996141173 DE 19641173 A DE19641173 A DE 19641173A DE 19641173 A1 DE19641173 A1 DE 19641173A1
Authority
DE
Germany
Prior art keywords
press
stamp
glass
mold
cover ring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE1996141173
Other languages
German (de)
Inventor
Wilhelm Koenig
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KOENIG, WILHELM, 46047 OBERHAUSEN, DE
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE1996141173 priority Critical patent/DE19641173A1/en
Publication of DE19641173A1 publication Critical patent/DE19641173A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B11/00—Pressing molten glass or performed glass reheated to equivalent low viscosity without blowing
    • C03B11/06—Construction of plunger or mould
    • C03B11/10—Construction of plunger or mould for making hollow or semi-hollow articles

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

Pressed glass article are produced by a press-and-blow process in which the glass is put in a die (6) and a pressure ram (4) first informs the glass to form a pressing which is held under the ram under vacuum and/or by a cover ring (5). The pressing is removed with the ram and cover ring and the mould is replaced by a single or two-part blow mould (7,8). Together with the ram and cover ring, the pressing is lowered into the mould and is blown to form the finished article.

Description

Der Preß-Blas-Prozeß ist in der Glasverformungstechnik bekannt, bei dem herkömmlichen Verfahren wird jedoch lediglich der Mün­ dungsbereich des Artikels erhalten durch das Mitbewegen der Mündungsform, während der übrige Behälterbereich weitgehend weiter verformt wird.The press-blow process is known in glass forming technology, in the conventional method, however, only the coin range of the article obtained by moving the Mouth shape, while the rest of the container area largely is deformed further.

Der Zweck dieses erfindungsgemäßen Verfahrens besteht zum Bei­ spiel für die Herstellung von Streuscheiben in der Beibehaltung wesentlicher Preß-Formgebungsbereiche wie die Lichtvertei­ lungsstruktur und der Erhaltung der Genauigkeit der Glasform des Artikels im maßgebenden Randbereich zur Lage der Licht­ struktur.The purpose of this method according to the invention is to game for the production of spreading discs in the retention essential press shaping areas such as the light distribution structure and maintaining the accuracy of the glass shape of the article in the decisive marginal area on the position of the light structure.

Ein Ausführungsbeispiel ist in der Fig. 1 beschrieben.An exemplary embodiment is described in FIG. 1.

Die Pos. 1 zeigt den durch Pressen erzeugten Artikel.Item 1 shows the article produced by pressing.

Die Pos. 2 zeigt den aus der Preß-Form entnommenen Artikel.Item 2 shows the article removed from the press mold.

Die Pos. 3 zeigt den in der Blas-Form fertiggeblasenen Artikel.Item 3 shows the blow-molded article.

Der Preßstempel 4 ist in den Bereichen in denen später in der Blas-Form 7, 8 ein Hinterschnitt erfolgen soll, so geformt, daß ein ausreichendes Glasvolumen bereitgehalten wird, welches in der Blas-Form 7, 8 den Hinterschnitt mit dem entsprechenden Glasbedarf deckt. Nach dem erfolgten Preßvorgang Pos. 1 wird der Glasartikel einmal gehalten durch Vakuum, welches durch die nach dem Preßvorgang um etwa 0,1-0,2 mm geöffneten Ventile 9 auf die untere Stempelfläche mit der Lichtstruktur wirkt, und zum anderen dem vornehmlich zwei- u. mehrteilig gestalteten Deckring 5, der hauptsächlich den noch verformbar gestalteten Randbereich hält und die spätere Formtreue zur Lichtstruktur ga­ rantiert, in die Pos. 2 gebracht und die Preß-Form gegen die Blas-Form ausgetauscht. Eine Umkehrung der Bewegungen ist auch möglich, so daß die beiden Formen je eine Position haben und der Stempel mit Deckring zu den jeweiligen Formen transportiert wird. Nach der Übereinstimmung der Preßachse mit der Blas- Formachse wird der Stempel und Deckring in die beiden 7, 8 - oder mehr - Blas-Form-Teile gefügt, und das Vakuum auf den Ventilen 9 wird durch Blas-Luft-Überdruck ersetzt, und das noch am Stempel haftende, verformbare Glas wird an die Blas-Form-Wandung gebla­ sen. Nach Durchführung dieses Vorganges kann durch geringfügi­ ges Anheben des Stempels noch ein Innenkühlen des Artikels mit Luftaustritt zwischen Stempel und Deckring erfolgen.The press ram 4 is shaped in the areas in which an undercut is later to be made in the blow mold 7 , 8 in such a way that a sufficient glass volume is kept available, which covers the undercut in the blow mold 7 , 8 with the corresponding glass requirement. After the pressing process item 1 has been carried out, the glass article is held once by vacuum, which acts on the lower stamp surface with the light structure through the valves 9 which are opened by about 0.1-0.2 mm after the pressing process, and on the other hand the primarily two u. Multi-part designed cover ring 5 , which mainly holds the still deformable designed edge area and guaranties the later shape fidelity to the light structure, brought into the Pos. 2 and exchanged the mold for the blow mold. The movements can also be reversed so that the two molds each have a position and the stamp with the cover ring is transported to the respective molds. After the press axis matches the blow-mold axis, the punch and cover ring are inserted into the two 7, 8 - or more - blow-mold parts, and the vacuum on the valves 9 is replaced by blow-air overpressure, and that deformable glass still adhering to the stamp is blown onto the blow mold wall. After carrying out this process, the article can be cooled internally with air leakage between the stamp and the cover ring by slightly lifting the stamp.

Claims (1)

Glaspressverfahren mit einem Preß-Blas-Stempel zur Erzeugung von Preßartikeln mit hinterschnittenen Formbereichen unter Bei­ behaltung von Preßstrukturen und Formentreue dadurch gekenn­ zeichnet, daß das Glas in eine Preßform gegeben wird und der Preßstempel zunächst die Verformung eines Rohlings nach Preßbe­ dingungen vornimmt, dann der Rohling unter dem Stempel gehal­ ten durch Vakuum und oder durch den Deckring, der zum Halten wenigstens zweiteilig sein muß, mit dem Stempel und dem Deck­ ring aus der Form entnommen wird, die Preßform gegen eine zwei oder mehrteilige Blasform ausgetauscht wird, und der Glasarti­ kel mit Stempel und Deckring abgesenkt in die Blasform nun zu seiner endgültigen Form aufgeblasen wird.Glass pressing process with a press-blow stamp for the production of press articles with undercut form areas while maintaining the press structures and shape fidelity characterized in that the glass is placed in a press mold and the press stamp first performs the deformation of a blank according to pressing conditions, then the blank held under the stamp th by vacuum and or through the cover ring, which must be at least two-part to hold with the stamp and the cover ring is removed from the mold, the mold is replaced by a two or more part blow mold, and the glass article with Stamp and cover ring lowered into the blow mold is now inflated to its final shape.
DE1996141173 1996-10-08 1996-10-08 Glass pressing process for manufacture of articles with undercut portions Withdrawn DE19641173A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1996141173 DE19641173A1 (en) 1996-10-08 1996-10-08 Glass pressing process for manufacture of articles with undercut portions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1996141173 DE19641173A1 (en) 1996-10-08 1996-10-08 Glass pressing process for manufacture of articles with undercut portions

Publications (1)

Publication Number Publication Date
DE19641173A1 true DE19641173A1 (en) 1998-04-16

Family

ID=7807991

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1996141173 Withdrawn DE19641173A1 (en) 1996-10-08 1996-10-08 Glass pressing process for manufacture of articles with undercut portions

Country Status (1)

Country Link
DE (1) DE19641173A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9682881B2 (en) 2013-06-06 2017-06-20 Pochet Du Courval Method for producing a glass container by pressing

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1259281A (en) * 1915-07-03 1918-03-12 Hartford Fairmont Co Manufacture of glassware.
US2205382A (en) * 1938-05-19 1940-06-25 Carr Lowrey Glass Co Method of making hollow glassware
DE2421677A1 (en) * 1973-11-09 1975-05-15 Linea Vetrerie Veneziane Blown glass articles with internal decorative membranes - produced by inserts with recesses into parison before final blowing
DE3407864A1 (en) * 1983-03-09 1984-09-13 Nippon Sheet Glass Co. Ltd., Osaka SHAPE AND METHOD FOR PRODUCING SHAPED GLASS ITEMS

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1259281A (en) * 1915-07-03 1918-03-12 Hartford Fairmont Co Manufacture of glassware.
US2205382A (en) * 1938-05-19 1940-06-25 Carr Lowrey Glass Co Method of making hollow glassware
DE2421677A1 (en) * 1973-11-09 1975-05-15 Linea Vetrerie Veneziane Blown glass articles with internal decorative membranes - produced by inserts with recesses into parison before final blowing
DE3407864A1 (en) * 1983-03-09 1984-09-13 Nippon Sheet Glass Co. Ltd., Osaka SHAPE AND METHOD FOR PRODUCING SHAPED GLASS ITEMS

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JP 62-12623 A., In: Patents Abstracts of Japan, C-429, June 19, 1987, Vol. 11, No. 192 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9682881B2 (en) 2013-06-06 2017-06-20 Pochet Du Courval Method for producing a glass container by pressing

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Legal Events

Date Code Title Description
OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
8127 New person/name/address of the applicant

Owner name: KOENIG, WILHELM, 46047 OBERHAUSEN, DE

8139 Disposal/non-payment of the annual fee