Process and device for cutting through films in laminated glass

#The invention relates to a process for cutting films in laminated glass with a blade and a device which is suitable for executing the process and which is equipped with a blade.

#Devices for cutting through the film of laminated glass as are known for example from EP 0 708 741 B are a component of devices for dividing laminated glass and are used to cut through the plastic film which is located between the panes of laminated glass after breaking the two panes and pulling them apart in order to complete separation of the laminated glass.

#EP 0 708 741 B discloses a cutting device with a blade for cutting through the film in laminated glass.

#Other details and features of the invention result from the following description of preferred embodiments in which reference is made to the attached drawings.

#FIG. 1 shows in an oblique view a device as claimed in the invention,

#FIG. 2 shows a side view thereof,

#Even if in the embodiment described below the blade fits into the film of laminated glass which is to be cut through from overhead, an arrangement is also possible in which the blade acts from underneath on the film, therefore the holding device for the blade is located underneath the laminated glass pane to be divided.

#The holding device 1 which is shown in FIGS. 1 to 5 for a cutting blade 2 of a device for cutting through plastic film in laminated glass as is known for example from EP 0 708 741 B can be movably guided on a guide transversely over the laminated glass. For example, on the guide a carriage can be moved which in addition to the holding device 1 for the blade 2 also bears a cutting wheel or its holding device so that one drive is enough for moving the cutting wheel when scratching the top glass pane on the one hand and the blade 2 which is inserted subsequent to opening the gap after breaking the two glass panes of the laminated glass pane on the other hand.

#The holding device 1 for the cutting blade 2 is mounted via a base plate 3 on a carriage (not shown) which can be moved transversely over the cutting table. On two brackets 4 which project in the upper area from the base plate 3, around the horizontal axis 20 which is aligned parallel to the direction of motion or parallel to the cutting direction, a swivelling part 28 is swivel-mounted, from which a carrier 6 consisting of two plates 5 parallel to one another project down. To swivel the carrier 6 on the plate 5 over an angle 7 a hydraulic cylinder 8 is mounted with a piston rod 9 which is supported on the base plate 3 in the lower area.