Machine and method for assemblilng enclosure comprising shell

A method of assembling a C-shaped shell and a rectangular base, comprising steps of:

• providing the C-shaped shell defining a cavity therein and further defining apertures in two opposite side walls therein, a pair of flanges formed on upper ends of said of said side walls, a first horizontal distance defined along a first direction between said pair of flanges, which is smaller than a second horizontal distance defined between the pair of two opposite side walls along said first direction;
• loading said shell to a table with the cavity in communication with an exterior via an opening defined between said pair of flanges;
• moving a pair of engagement parts respectively toward two side walls of the shell from two sides of said two side walls along said first direction, said engagement parts passing through the corresponding apertures and located under the corresponding flanges, respectively;
• moving said pair of engagement parts outwardly and upwardly, and thus outwardly deflecting the side walls by means of engagement between the engagement parts and the flanges so as to increase the first distance to be not less than a dimension of the base along the first direction;
• downwardly loading the base to the shell from the opening in a second direction perpendicular to said first direction;
• and
• resuming the flanges by withdrawing the engagement parts from the shell via a reverse procedure so that the flanges abut against the base and the shell retainably holds the base therein.

In combination:

• a machine providing table;
• a C-shaped shell located on the table, said shell defining a pair of opposite side walls connected by a bottom wall, a pair of flanges extending from top ends of the pair of side walls and toward each other, an aperture defined in each of said pair of opposite side walls;
• the machine further including a pressing device downwardly pressing against the bottom wall;
• and
• an engagement part extending through said aperture from an outer side of the corresponding side wall and further upwardly engaged with the corresponding flange, said engagement part being upwardly and outwardly moved to deflect the side wall outward so as to allow a base to be downwardly assembled to the shell without obstruction from the flange.