TMM

Gob Weight Check-up
The device TMM is used for measurement and control of gob weight in order to stabilize the gob feeders.
 

Tasks

  • gob weight measurement
  • number of gobs per minute determination
  • gob weight control
  • determination of the shape
  • trend graphs display
  • long time storage


Structure and Measuring Principle

The device is made up of the camera including protecting enclosure and cooling as well as the image processing computer inside of the electronic enclosure. It can be placed beside the blowing machine as well as in the control room.
Two types of the device exist:

  • TMM (M) is suitable for rotating blowing machines and presses
  • TMM (L) is used for IS-machines.
TMM (M) takes the image of the gob by means of a matrix camera. The image is transferred while the shear blades of the cutter can be seen in the gob. TMM (L) is based on CCD line camera. The image of the gob is taken during its fall from the cutter into the gob distributor.
 

Operation

Any operation of the device is not necessary, except the adjustment after job changes. The device TMM (M) can be adapted to the different sizes of gobs by means of a motor driven zoom lens.
 

Advantages

  • non-contact measurement
  • application at all types of gob feeders
  • influence of human factor is reduced
  • detailed production analysis and trouble shooting
  • reduced waste rate reduced run-in-time


References

Schott Zwiesel, Germany (2 units)
Oberland Glass Wirges, Germany (4 units)
Kimble Glass Vineland, USA
TMM (L) at a double gob feeder: row cameras take the 
picture from a gob each during the fall. Water cooling, 
air flushing and a robust enclosure provide protection 
of the electronics.





The operation interface shows the trend of the weight 
and gob shape.
 
 


TMM(M) is used at rotation blowing machines and presses.