Glass manufacturing – Blowing means with blow mold – With means heating and/or cooling apparatus
Patent
1992-11-06
1994-05-17
Jones, W. Gary
Glass manufacturing
Blowing means with blow mold
With means heating and/or cooling apparatus
65319, 65356, C03B 938, C03B 1112
Patent
active
053124731
DESCRIPTION:
BRIEF SUMMARY
CROSS REFERENCE TO RELATED APPLICATIONS
This application is a national phase of PCT/EP 92/00626 filed 21 Mar. 1992 and based, in turn, upon German national application P 41 09 985.0 filed 27 Mar. 1993 under the international convention.
The invention relates to a cooling system for at least one mold of an IS (individual section) type machine for the production of hollow glass articles having a connecting casing which is connected on the intake side to a supply pipe for cooling air and on the outlet side to the axial cooling air passages of the mold when the mold is closed, and which is traversed by a vacuum pipe leading outwardly from the bottom of the mold.
BACKGROUND OF THE INVENTION
A cooling system of the aforedescribed type is shown in DE 38 37 335 C2. In this known cooling system the connecting casing is subdivided into two cooling chambers, each of which is connected on the intake side, via an inlet passage which can be opened and closed by means of a controlled valve, with a supply pipe for cooling air or a cooling air chamber, this being in turn connected to the station enclosure cooling unit assigned to cover the entire IS or RIS sector. Hereby, the cooling air is guided from the station enclosure cooling unit from the side into the cooling-air supply pipe or chamber arranged underneath the connecting casing.
The cooling air impact on the connecting casing, and implicitly on the molds, is basically determined by the conditions existing at the cooling unit for the station enclosure. Therefore, the cooling of the molds can not always be performed within the optimal range. Furthermore, due to the deflection of the cooling air when it enters the area of the cooling air supply pipe, or the cooling air chamber arranged immediately underneath the connecting casing, considerable turbulence occurs, which makes an even distribution of the available cooling air among the cooling passages of the molds even more difficult.
OBJECT OF THE INVENTION
It is the object of the invention to provide a cooling system for at least one mold of an IS type machine for the production of hollow glass articles, wherein the conditions at the station enclosure cooling unit have no influence on the cooling air action at the connecting casing and thereby on the actual mold cooling of the IS type machine.
SUMMARY OF THE INVENTION
According to the invention, this problem is solved by connecting the cooling air supply pipe of the connecting casing directly to a cooling air supply system of the IS type machine. The area of available cooling air supply pipes in the neighborhood of the connecting casing can be further used by closing the lateral connection of the corresponding area with a sheet metal lid. Due to the direct connection of the connecting casing to the cooling air supply system of the machine via the cooling air supply pipes., the action of the cooling air in the connecting casing is completely independent from the conditions existing at the cooling unit for the station enclosure and is therefore optimally adjustable to the mold cooling. Any timing dependence on the station enclosure cooling unit is eliminated.
When the cooling air supply line runs through the machine bed of the IS type machine and is connected to the cooling air system via a connection piece located approximately underneath the connecting casing, whereby the cooling air supply pipes run approximately in a straight line between the connecting casing and the connection piece, it is possible to almost completely eliminate any turbulence in the cooling supply air line in the neighborhood of the connecting casing; compared to the state of the art, a considerable uniformity of the cooling air action in the cooling passages of the individual molds results.
If in the connection piece a flap valve for the control of the cooling air flow in the cooling air pipes is provided, considerable sealing advantages can be obtained in comparison to other types of valve constructions. These advantages are important, particularly in the sense that otherwise, when the
REFERENCES:
patent: 4579576 (1986-04-01), Jones
patent: 4701202 (1987-10-01), Foster
patent: 4701203 (1987-10-01), Schneider
patent: 4750929 (1988-06-01), Bolin
patent: 4909823 (1990-03-01), Bolin
patent: 4973347 (1990-11-01), Schommartz et al.
Dubno Herbert
Griffin Steven P.
Jones W. Gary
Ruhrglas GmbH
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