Device for dividing laminated glass

• US 6,434,974 B1
• Filed: 04/10/2000
• Issued: 08/20/2002
• Est. Priority Date: 04/13/1999
• Status: Active Grant

• Current Assignee: Lisec, Peter
• Original Assignee: Lisec, Peter
• Inventors: Lisec, Peter
• Primary Examiner(s): VINCENT, SEAN E
• Application Number:
  US09/546,211
• Time in Patent Office: 862 Days
• Field of Search: 651/74, 838/79, 838/63, 225/2, 225/93.5, 225/96.5, 225/104, 225/105
• US Class Current: 65/174
• CPC Class Codes: C03B 33/078 Polymeric interlayers
• CPC Class Codes: Y10T 225/379 Breaking tool intermediate spaced work supports

Abstract

A device for dividing laminated glass (3) has two supports for laminated glass (3) which has been scratched (13, 14) on both sides and in a gap (4) between them two beams (5) which are made as suction beams. The beams (5) can be swivelled using drives (8) around horizontal axes (6) which are parallel to the dividing line such that the laminated glass (3) is arched on the one hand up and then down. By the swivelling of the beams (5) and the associated arching of the laminated glass pane (3) the fractures in the two glass panes (9, 10) are opened along the scratch lines (13, 14) which were produced beforehand, the scratch line (13) or (14) which lies on the convex side of the arched laminated glass pane (3) being opened. To separate the plastic film (15) between the glass panes (9, 10) of the laminated glass (3) a thermal radiation source (11) is used which extends preferably over the entire width of the device and which delivers thermal radiation (12) which is preferably absorbed by the plastic film (15), but not by the glass panes (9, 10) so that the latter are not significantly heated when the plastic film melts.

Claims

1. Device for dividing scratched laminated glass comprising a plastic film between two glass planes with two support plates and a means located between the plates for arching the laminated glass in the area of the scratch lines, characterized in that the means for arching the laminated glass are two beams which are provided between the edges of the support plates that is, the edges facing one another, and the beams can be swiveled around horizontal axes independently of the support plates which are stationary when the laminated glass is broken.

2. Device as claimed in claim 1, wherein the swivel axes of the beams are located in the area of the upper edges of the beams which are adjacent to one another.

3. Device as claimed in claim 1, wherein the beams are made as suction beams.

4. Device as claimed in claim 1, wherein the beams on a side which is to adjoin the laminated glass pane bear a support of elastic material which is provided with openings which can be supplied with negative pressure.

5. Device as claimed in claim 1, wherein the beams are adjustable during the swiveling in the direction perpendicular to the support plates.

6. Device as claimed in claim 1, wherein the means for swiveling the beams are designed for common swiveling of the beams in opposite directions of swiveling.

7. Device as claimed in claim 1, wherein between the beams there is an elongated thermal radiation source which delivers thermal radiation which is preferentially absorbed by the plastic film between the glass panes of the laminated glass, but not by the glass panes of the laminated glass.