Device and method for forming glass bodies
AssigneeSCHOTT Schweiz AG
InventorJohannes Segner
Life of this patent
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Abstract
A device for the shaping of glass bodies, in particular of pharmaceutical vials, comprises a clamping chuck for holding a glass body, a rotary drive for driving the clamping chuck rotatingly, further at least one heat source for heating a glass body held within the clamping chuck, and further a controller which is coupled to the rotary drive so that the clamping chuck can be driven at variable rotational speed.
Claims20
A device for the forming of glass bodies, comprising a plurality of processing stations, each processing station comprising:
- a clamping chuck for receiving a glass body;
- a rotary drive for driving said clamping chuck rotatingly at a certain rotational speed;
- a controller being coupled to said rotary drive allowing to control a rotational speed of said rotary drive continuously between a minimum value and a maximum value;
- wherein at least one of said processing stations further comprises at least one heat source for heating a glass body.
A device for the forming of glass bodies, comprising:
- a clamping chuck for receiving a glass body;
- a rotary drive for driving said clamping chuck rotatingly at a certain rotational speed;
- a controller being coupled to said rotary drive allowing to control a rotational speed of said rotary drive continuously between a minimum value and a maximum value;
- at least one heat source for selectively heating a glass body received within said clamping chuck;
- wherein said clamping chuck and said heat source are configured for being positioned in axial direction with respect to each other.
A method for the shaping of pharmaceutical vials, comprising the steps of:
- providing a hollow glass body;
- heating said glass body at least locally to a softening temperature, wherein a viscosity of said glass body is in the range of 103 to 105 dPas while rotating said glass body at a rotational speed of 10 to 50000 rpm;
- varying said rotational speed while forming said glass body.
Dependencies are inferred from the claim text.