Control for an I.S. machine
AssigneeEmhart Glass S.A.
InventorJonathan S. Simon
Life of this patent
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Abstract
A machine cycle unwrapper for use with a glass forming machine which is controlled by a programmable sequencer which defines a 360° machine cycle having a set cycle time. The cycle unwrapper converts the “on” and “off” angles around the wrapped 360° programmable sequencer to “on” and “off” times along an unwrapped bottle forming process which takes more then two machine cycles to complete.
Claims7
A machine cycle unwrapper for use with a glass forming machine which includes a blank station for forming a parison from a gob of molten glass having at least one mechanism, a blow station for forming a parison into a bottle having at least one mechanism, a feeder system for forming a gob from a runner of molten glass and delivery means for delivering the gob to the blank station, a mechanism for transferring a parison from the blank station to the blow station and a takeout mechanism for removing a bottle from the blank station,
- wherein the machine is controlled by a programmable sequencer which defines a 360° machine cycle having a set cycle time,
- wherein each of the mechanisms is displaced from an advanced position to a retracted position and from the retracted position back to the advanced position during the time of one 360° machine cycle,
- wherein the duration of displacement of each of the mechanisms from the retracted position to the advanced position and from the advanced position to the retracted position are determinable,
- wherein interferences exist between the motion paths of the gob, the parison, the bottle and individual mechanisms,
- wherein the thermal forming of the parison and bottle involve a number of thermal forming processes occurring during the time of one 360° machine cycle and having finite durations,
- wherein process air is supplied for at least one process for a finite duration by turning a supply valve “on” and then “off” during the time of a 360° machine cycle,
- wherein displacements begin and valves are turned “on” and “off” in a desired sequence at discrete event angles around the 360° machine cycle, and
- wherein an unwrapped bottle forming process wherein a gob of molten glass is sheared from a runner of molten glass, the gob is then formed into a parison in the blank station, the parison is then formed into a bottle in the blow station, and the bottle is then removed from the blow station, takes more than the time of a 360° machine cycle to complete, comprising
- unwrapping means for converting the event angles around the wrapped 360° programmable sequencer at which displacements begin and valves are turned “on” and “off” to event times along an unwrapped bottle forming process.
A machine cycle unwrapper for use with a machine which receives an initial product and transforms the initial product into a final product in a plurality of stations,
- wherein the machine is controlled by a programmable sequencer which defines a 360° machine cycle which has a set machine cycle time,
- wherein each of the mechanisms is cycled during the time of one machine cycle,
- wherein the duration of each displacement of each of the mechanisms is determinable,
- wherein the start of each displacement is an event which is selectively actuated in a selected sequence during the time of one cycle of the machine, and
- wherein the operation of the machine has a number of constraints including interferences which exist between the motion paths of individual mechanisms, and
- wherein an unwrapped process wherein the initial product is transformed into the final product takes more than the time of one machine cycle to complete, comprising
- unwrapping means for converting the event angles around the wrapped 360° programmable sequencer at which displacements begin to event times along the unwrapped process.
Dependencies are inferred from the claim text.