Glass manufacturing – With signal – indicator – inspection means – register – or recorder
Patent
1982-09-30
1984-06-26
Kellogg, Arthur D.
Glass manufacturing
With signal, indicator, inspection means, register, or recorder
65 29, 65163, 65DIG13, 364473, 364476, C03B 940
Patent
active
044564627
DESCRIPTION:
BRIEF SUMMARY
Technical Field
This invention is concerned with an individual section glassware forming machine comprising three operating stations which are, respectively, a blank station including a blank mould for forming a parison, an intermediate station in which reheating of the parison takes place, and a shaping station including a blow mould for finally shaping an article of glassware, and transfer means driven by a motor for carrying a reheated parison from the intermediate station to the shaping station.
Background Art
In the complete specification of U.K. Pat. No. 1,491,859 there is described an individual section glassware forming machine which has three operating stations, a parison being formed from a gob of molten glass at a blank station, the parison being supported at an intermediate station for a part of the reheating time during which the outer layer of glass which was chilled during the parison formation is reheated by the heat retained in the other parts of the parison, and the reheated parison being shaped into an article of glassware at a shaping station. Such a three station machine has substantial advantages over the conventional individual section glassware forming machine which comprises only two stations, a blank station where the parison is formed in a blank mould and a shaping station where the article of glassware is shaped from the parison. In particular, the three station machine enables articles of glassware to be produced at higher rates of production that can be accomplished using the conventional machine. Such higher rates of production are enabled primarily by the presence of the intermediate station for the parison reheating stage of the process, with a result that the shaping station can be used solely for shaping the article of glassware and time is not used in the shaping station for parison reheating as has been necessary in many processes for forming glassware in the conventional individual section machine.
In a three station machine, the reheated parison is transferred from the intermediate station to the shaping station while it consists of glass which is in a plastic condition and which is therefore very soft, floppy and readily deformable. This is indeed the desired condition of the reheated parison for shaping by the immediate application of air under pressure within the parison. However, the fact that the reheated parison has these properties at the time of transfer means that care must be taken during this transfer if the reheated parison is not to be subjected to undesirable deformation during this transfer.
There is, therefore, a problem in connection with the movement of the reheated parison from the intermediate station to the shaping station because of the conflict which exists between the need to move the reheated parison speedily so as not to detract from the advantage of the three station machine in providing higher rates of production, and the need to treat the parison carefully during this transfer so that the reheated parison is not undesirably deformed by the motion of the transfer during movement from the intermediate station to the shaping station.
Because a straight line movement by direct pneumatic piston and cylinder action provides too large an acceleration and deceleration for the reheated parison, it has been proposed to effect the transfer of the reheated parisons from the intermediate station to the shaping station in an arcuate movement under the control of a pneumatic piston and cylinder device. However, this has proved unsatisfactory because an arcuate movement imposes inertia forces on the reheated parison in both the vertical direction and a horizontal direction, and the vertical forces are liable to cause undesired and unpredictable extensions of the reheated parison.
Another approach to providing a suitable movement for the transfer of the reheated parisons from the intermediate station to the shaping station has been to drive a transfer carriage in a straight line movement by a member which is itself moved angularly in a part-rotary moti
REFERENCES:
patent: 4203752 (1980-05-01), Becker et al.
patent: 4255179 (1981-03-01), Foster
patent: 4266961 (1981-05-01), Wood
patent: 4313750 (1982-02-01), Lulejian et al.
patent: 4367087 (1983-01-01), Cardenas-Franco et al.
Gennard Derek
Jones Stanley P.
Emhart Industries Inc.
Kellogg Arthur D.
Warzecha Gene
LandOfFree
Control of individual section glassware forming machine does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Control of individual section glassware forming machine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control of individual section glassware forming machine will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2230996