Abstract: A linear transfer mechanism includes a guide member, a transfer carriage movable along a horizontal linear transfer path provided on the guide member, and a drive mechanism provided with a drive pulley and an output belt wound around the drive pulley for reciprocating movement in a reciprocating movement section in parallel to the transfer path. The transfer mechanism also includes a drive source for driving the drive pulley. The transfer carriage is connected with the output belt of the drive mechanism by a connecting member. Both the drive mechanism and the drive source are supported by the guide member.

Abstract: A linear transfer mechanism includes a guide member, a transfer carriage movable along a horizontal linear transfer path provided on the guide member, and a drive mechanism provided with a drive pulley and an output belt wound around the drive pulley for reciprocating movement in a reciprocating movement section in parallel to the transfer path. The transfer mechanism also includes a drive source for driving the drive pulley. The transfer carriage is connected with the output belt of the drive mechanism by a connecting member. Both the drive mechanism and the drive source are supported by the guide member.

Abstract: A two-armed transfer robot includes first and second arm mechanisms each having a handling member for carrying a workpiece.First to third shafts associated with the arm mechanisms are coaxially supported by a stationary base frame for rotation about a first axis. The first arm mechanism has a pantograph assembly including a first arm, an outer link, a pair of intermediate links and an inner link. The first arm carries the outer link for rotation about a second axis. The outer link carries each intermediate link for rotation about a third axis. The third axes are spaced outward from the second axis. The second axis is located between the third axes as viewed circumferentially about the first axis. The first arm mechanism also has rotation-transmitting members and connecting members. The second arm mechanism is substantially identical to the first arm mechanism. The first and the second handling members are vertically spaced from each other to avoid interference with each other.

Abstract: A two-armed transfer robot includes a pair of double-pantograph mechanisms. These mechanisms are substantially symmetrical to each other with a vertical plane. Each double-pantograph mechanism includes a first pantograph assembly and a second pantograph assembly. The second pantograph assembly supports a handling member for carrying a workpiece to be processed. The second pantograph assembly is offset away from the vertical plane with respect to the first pantograph assembly. A rotation-transmitting mechanism is provided between the first and the second pantograph assemblies of each double-pantograph mechanism. Thus, the two pantograph assemblies of each double-pantograph mechanism are actuated in cooperation for linearly moving the handling member. The handling members of the respective double-pantograph mechanisms are vertically spaced from each other. The handling members are arranged not only to move linearly but to rotate simultaneously around a vertical axis.

Abstract: A two-armed transfer robot includes a pair of double-pantograph mechanisms. These mechanisms are substantially symmetrical to each other with a vertical plane. Each double-pantograph mechanism includes a first pantograph assembly and a second pantograph assembly. The second pantograph assembly supports a handling member for carrying a workpiece to be processed. The second pantograph assembly is offset away from the vertical plane with respect to the first pantograph assembly. A rotation-transmitting mechanism is provided between the first and the second pantograph assemblies of each double-pantograph mechanism. Thus, the two pantograph assemblies of each double-pantograph mechanism are actuated in cooperation for linearly moving the handling member. The handling members of the respective double-pantograph mechanisms are vertically spaced from each other. The handling members are arranged not only to move linearly but to rotate simultaneously around a vertical axis.