The invention relates to a glass forming machine and a method for manufacturing formed glass parisons. A glass forming machine includes a blank side for forming parisons (14) from gobs of molten glass (9). The blank side includes a plunger (10) and a blank mould (1). The plunger (10) can be moved into the blank mould (1) up to an end position. The plunger (10) can be moved out of the blank mould (1) up to a start position. The glass forming machine includes a glass feeding device (60) which is configured to bring a gob of molten glass (9) into the blank mould (1). The glass forming machine includes a measuring device which is configured to measure the end position of the plunger (10). The glass feeding device (60) is configured such that the size of a gob of molten glass (9) depends on the end position previously reached during operation. Thus, parisons of good quality can be produced with a bigger tolerance of mould volumina saving costs for the machine operator.
展开▼
