Process and apparatus to cut laminated glass

• US 5,475,196 A
• Filed: 10/28/1993
• Issued: 12/12/1995
• Est. Priority Date: 11/02/1992
• Status: Expired due to Fees

• Current Assignee: Peter Lisec
• Original Assignee: Peter Lisec
• Inventors: Lisec, Peter
• Primary Examiner(s): Walberg, Teresa J.
• Assistant Examiner(s): Mills, Gregory L.
• Application Number:
  US08/142,100
• Time in Patent Office: 775 Days
• Field of Search: 219/121.37, 219/121.38, 219/121.39, 219/121.44, 219/121.55, 219/121.58, 219/121.66, 219/121.67, 219/121.69, 219/121.72 , 219/121.82, 219/121.84, 225/2, 225/93.5, 225/96.5, 83/885, 83/455, 83/456, 65/105, 65/112, 65/113
• US Class Current: 219/121.39
• CPC Class Codes: B32B 17/1099 After-treatment of the layered product, e.g. cooling
• CPC Class Codes: C03B 33/078 Polymeric interlayers
• CPC Class Codes: Y10T 225/304 Including means to apply thermal shock to work
• CPC Class Codes: Y10T 225/325 With means to apply moment of force to weakened work
• CPC Class Codes: Y10T 83/7507 Guide for traveling cutter

Abstract

Laminated glass is grooved on both sides, bent first to one and then to the other side, and during the second bending process, the two parts of the laminated glass are pulled apart. The thus stretched film is melted by a plasma jet directed in the gap formed by the bending process, which is moved over the entire length of the gap. The apparatus to perform the process comprises two platelike supports (1, 2) for laminated glass (10) to be cut, of which at least one can swivel back and forth around an axis (4) running in impact area (3) between two supports (1, 2), and with clamping apparatuss to immobilize the laminated glass on the supports. On their lower edges, supports (1, 2) have conveying elements (5, 6) for laminated glass (10) and clamping apparatus (13, 14) to immobilize laminated glass (10). Further, a plasma torch (15) is provided, which has an outlet (30) for the plasma jet directed to impact area (3) between supports (1, 2), and the plasma torch is guided on a guide rail oriented parallel to the axis.

Claims

1. In an apparatus to cut laminated glass, comprising two platelike supports for a laminated glass sheet to be cut, of which one can swivel around an axis running in an impact area between said two supports, and structure to immobilize a laminated glass sheet on said supports, which are placed on both sides of said impact area between said two supports;

the improvement wherein one of said two supports is oriented horizontally and is rigidly fastened in a frame of said apparatus, while a second support is mounted to swivel vertically around a horizontal axis disposed in said impact area, and in addition in a direction of a plane of said one support is movable perpendicularly to an edge of said one support disposed next to said impact area, and wherein a high energy beam source is guided on a guide rail oriented parallel to said axis, and wherein said second support is mounted to swivel on pivots in said frame fastened to piston rods of pressure medium cylinders, and wherein at least one pressure medium cylinder to pivot said second support vertically acts on the edge of said second support opposite said impact area.

2. Apparatus according to claim 1, wherein said one pressure medium cylinder is a double cylinder with piston rods extending outward from two sides.

3. In an apparatus to cut laminated glass, comprising two platelike supports for laminated glass to be cut, of which at least one can swivel back and forth around an axis running in an impact area between the two supports, and apparatus to immobilize laminated glass on said supports;

the improvement wherein a high energy beam source is provided, which has an outlet for the beam source directed toward said impact area between said supports, and wherein the beam source is guided on a guide rail oriented parallel to said axis, and wherein the apparatus to immobilize the laminated glass sheet on said platelike supports is, on at least one of two plate-like supports, a clamping apparatus with a clamping beam to be lowered from above on said at least one platelike support, and wherein said clamping beam is mounted on levers which are mounted to swivel on an edge of said platelike support remote from said impact area.

4. Apparatus according to claim 3, wherein to actuate said clamping beam, trunnions mounted to swivel around a machine-frame-stationary axis are provided, which are coupled with a rod to said clamping beam.