Patent ID: 11926000
Assignee: UNIST ACADEMY-INDUSTRY RESEARCH CORPORATION
Field: Machine tools (Mechanical engineering)
Classification: CPC B  F | IPC B  F

Claim 14:
15. An apparatus for fabricating a vacuum adiabatic body of a refrigerator, the apparatus comprising:
a laser source to provide a laser beam;
a jig including:
a base configured to support a base material of the vacuum adiabatic body and a sheet configured to resist heat conduction from the base material, and
at least one cover provided opposite to the base, wherein the jig is configured to position the base material and the sheet to be welded to each other by the laser beam; and

a vacuum pump configured to apply a vacuum pressure to the jig,
wherein the base includes a groove through which the vacuum pressure is applied to the sheet such that the vacuum pressure pulls a portion of the sheet into the groove,
wherein the sheet includes a portion having less thickness than the base material, and
wherein the jig is configured to be capable of:
placing the base material and the sheet between the base and the cover;
applying the vacuum pressure from the vacuum pump through the groove to the sheet for positioning the sheet against the base material; and
moving the laser with respect to the sheet and the base material to weld the sheet and the base material together.