Glass manufacturing – Control responsive to condition sensing means – Temperature or heater control
Patent
1982-09-30
1985-03-19
Smith, William
Glass manufacturing
Control responsive to condition sensing means
Temperature or heater control
65265, 65355, C03B 938
Patent
active
045057303
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention is concerned with a method of cooling a mould in a glassware forming machine wherein at least one portion of the mould is supported on a movable support which is moved to bring the mould portion supported thereby into engagement with other mould portions to form a closed mould or out of engagement with the other mould portions to open the mould.
The invention is also concerned with a mould arrangement of a glassware forming machine comprising a mould opening and closing mechanism operable to move at least one portion of the mould into engagement with other mould portions to form a closed mould or out of engagement with the other mould portions to open the mould, the mechanism comprising a mould portion support arranged to support the mould portion, and moving means operable to move the mould portion support to move the mould portion as aforesaid.
BACKGROUND ART
The moulds used in the manufacture of glassware articles require to be cooled during manufacture so as to avoid the moulds becoming overheated due to heat received from the glass. In the event that the moulds do become overheated, the glass may stick to the mould and satisfactory articles of glassware will not be produced.
There are various known methods of cooling moulds in glassware forming machines. In some of these methods cooling air is blown over the outside of the mould and in others the cooling air is passed through passages in the mould. In these methods while the mould may be satisfactorily cooled the cooling means does not insulate the mould from the mould opening and closing mechanism which may therefore become overheated. In other cooling methods, the mould is surrounded by a chamber into which cooling air is passed. This method insulates the mould opening and closing mechanism from the mould but requires the provision of very complicated mould supports which are only practical for certain types of mould.
DISCLOSURE OF INVENTION
In a method of cooling a mould in accordance with the invention, the mould portion is supported by an intermediate support which is removably supported on the movable support and defines a space which serves to insulate the movable support from the mould portion, and the mould portion is cooled by blowing air into the space.
In a mould arrangement in accordance with the invention, an intermediate support is removably mounted on the mould support, the intermediate support supporting the mould portion and defining a space which serves to insulate the mould support from the mould portion, and a passage through the mould support, provides access to the space so that cooling air can be blown into the space.
In order to enable the mould portion to be cooled to a greater extent in certain areas thereof, the intermediate support has at least one aperture therein through which cooling air, blown into the space defined by the intermediate support, passes to impinge on the mould portion.
In order to increase the cooling effect on the mould portion, the cooling air blown through the aperture in the intermediate support passes between fins on the outer surface of the mould portion.
In order to provide greater control of the cooling process, the quantity of cooling air blown into the space is controlled in accordance with the reading of a thermocouple embedded in the mould portion.
BRIEF DESCRIPTION OF DRAWING
The accompanying drawing is a side elevational view, partially in section, of a portion of a mould arrangement of a glassware forming machine in accordance with the invention.
BEST MODE OF CARRYING OUT THE INVENTION
The mould arrangement shown in the drawing is positioned at the blow station of an individual section glassware forming machine. The mould arrangement comprises a mould portion 10 which forms a side portion of a completed mould for making a glass bottle. The completed mould also comprises a further mould portion similar to the portion 10 (not shown) and a bottom portion 12. The mould arrangement also comprises a mould opening and closing mechanism operable to move
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patent: 3666433 (1972-05-01), Nebelung et al.
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patent: 4070174 (1978-01-01), Nebelung et al.
patent: 4101306 (1978-07-01), Schaar
patent: 4137061 (1979-01-01), Mallory et al.
patent: 4361434 (1982-11-01), Schneider
patent: 4388099 (1983-06-01), Hermening et al.
Boyer Michael K.
Emhart Industries Inc.
Moore Arthur B.
Smith William
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