Method and device for regulating the glass gob mass during the production of hollow glass containers

Device (1) for controlling the glass gob mass in the production of hollow glass containers by means of a glass forming machine (36), comprising at least one plunger (2,2′), which is disposed in a feeder head (3) of a feeder (4), and means (22,23,26) for moving the at least one plunger (2,2′) upwards and downwards, wherein a movement profile (A,B,C,D) for the plunger movement is stored in a control unit (71) of the device (1), said movement profile being changeable in order to influence the discharge of molten glass from the feeder head (3),

• characterized in that the glass forming machine is an IS (Individual Section) glass forming machine (36) and for the simultaneous production of an assortment of hollow glass containers of a different weight a changeable movement profile (A,B,C,D) for each plunger (2,2′) can be stored in the control unit (71) for each section (36) of the IS glass forming machine,
• the device (1) comprises means (67) to determine a mass reference value difference from a mass reference desired value and a measured mass reference actual value on the basis of at least one of consecutive gobs for each preform station (35) of each section (36),
• and the control unit (71) is connected via a data line (72) to the means (67) for determining the mass reference value difference and is designed, in dependence upon the determined mass reference value difference for each preform station (35), to change the associated plunger movement profile (A,B,C,D) such that by virtue of subsequent repetition of the determination of the mass reference value difference with subsequent change to the movement profile (A,B,C,D) the mass reference actual value is approximated stepwise to the mass reference desired value.