US 5,266,093 A · Glass bottle forming machine

Abstract

There is provided a plunger position detector for detecting a linear position of a plunger used for forming a parison over the entire range of moving of the plunger. Since there is correlation between the plunger position and the gob weight, the gob weight can be detected in response to an output signal of this detector and, in accordance with this detection, a gob forming operation is controlled to an optimum state so that the gob weight will become a predetermined weight. Since difference in center positions between a blank mold for forming a parison and the plunger causes variation in the state of movement of the plunger, this difference in the center positions can be detected in response to a plunger position detection signal and, in accordance with this detection, an optimum registering of the center positions can be performed.

Claims24

Dependent claims

A glass bottle forming apparatus comprising:

gob forming means for forming a gob of molten glass;
gob supply means for supplying the gob formed by the gob forming means;
parison forming means for forming the gob supplied by said gob supply means into a parison, said parison forming means having a mold for receiving the supplied gob and a plunger moveable in said mold for pressing the gob in said mold to form the parison;
plunger position detection means for successively detecting varying positions of said plunger while the plunger moves in said mold and for generating position detection data;
gob weight estimation means for estimating the weight of the gob which has been supplied detection data obtained by said detection means;
and
gob weight control means for controlling the gob forming means so that the gob weight estimated by the gob weight estimation means becomes a predetermined weight. H

4 more elements

Dependencies are inferred from the claim text.

Glass bottle forming machine

Life of this patent

Glass bottle forming machine

Life of this patent

Abstract

Claims24