Vacuum chamber on a frame basis for coating installations
View Patent ↗The present invention relates to a vacuum chamber and to its production. According to the invention, the vacuum chamber comprises a frame into which insert plates are placed. The insert plates form together with the frame a closed space in which a vacuum can be created. Preferably, the shell of the frame is extracted from an integrally formed metal piece, with a large portion of material being removed, leading to openings for the insert plates to be created. This has among others the advantage that no welding seams are necessary where the individual plates are inserted.
1. Vacuum chamber for coating installations, wherein the vacuum chamber is an air-tight vacuum chamber and comprises a frame and insert plates placed in the frame in a mechanically removable fashion and tightly, characterized in that the frame has at least one base element and arms formed integrally from a single metal plate, wherein the arms are bent upward to form webs of the frame.
2. Vacuum chamber according to claim 1 , characterized in that at least 40% of the surface of the volume surrounded by the vacuum chamber is delimited by the insert plates.
3. Vacuum chamber according to claim 1 , characterized in that the frame and the insert plates are connected in a removable fashion with flanges.
4. Vacuum chamber according to claim 1 , characterized in that at least two openings formed by the frame have geometrically essentially the same shape and thus at least two of the insert plates can be exchanged by being mechanically removed and fastened in their position.
5. Vacuum chamber according to claim 1 , characterized in that the insert plates at least in the connection area with the frame are flat plates.
6. Vacuum chamber according to claim 1 , characterized in that the frame essentially has a n-fold symmetry in relation to one axis, where n is an integer greater than 2 and insert plates are placed in a fashion corresponding to the symmetry of the frame.
7. Vacuum chamber according to claim 1 , characterized in that at least 50% of the surface of the volume surrounded by the vacuum chamber is delimited by the insert plates.
8. Vacuum chamber according to claim 1 , characterized in that the frame and the insert plates are connected in a removable fashion with flanges by means of brackets provided on the insert plates.