Bonding device for manufacturing vehicle seat

Claim 1

A bonding device for manufacturing a vehicle seat by which a top cover member is bonded to a resilient foam cushion member formed by foaming in a mold into a predetermined shape of the seat, said bonding device comprising: a lower die on which said top cover member is placed, said lower die having an upwardly protrudent portion (b 3 ); an upper die having means to secure said cushion member to said upper die, said upper die being movable towards said lower die so that said cushion member secured thereon is pressed against and bonded to said top cover placed on said lower die; a main pressing mechanism provided on said upper die for moving said upper die a first distance toward said lower die to press an entire body of said cushion member, wherein said main pressing mechanism comprises a cylinder for moving said upper die in a direction towards and away from said lower die; and an auxiliary pressing mechanism provided on said upper die, said upper die having a hole therethrough, said auxiliary pressing mechanism having press means being adapted to pass through said hole in said upper die and press a local portion of said cushion member in a direction towards said lower die by moving a second distance greater than said first distance, said press means of said auxiliary pressing mechanism being disposed opposite said upwardly protrudent portion (b 3 ) of said lower die, wherein said auxiliary pressing mechanism comprises a cylinder, and wherein said press means comprises a pressure plate provided on said cylinder, wherein said upper die is vertically moved by said main pressing mechanism relative to said lower die and said auxiliary pressing mechanism is disposed in a manner inclined relative to said upper die so that said pressure plate thereof is moved in an inclined direction relative to said upper die, whereby said top cover member is bonded to said cushion member by means of a pressure applied by said main and auxiliary pressing mechanism.