Abstract: An object is to provide a drive apparatus for an injection molding machine which can generate a large thrust force and can provide short-cycled continuous drive. The drive apparatus includes a housing (11); a tubular linear motor (14) including a movable element (12) disposed within the housing (11) in a manner capable of advancing and retreating, and a stationary element (13) attached to the housing (11), the linear motor (14) serving as a first drive section; a member-to-be-driven (15) caused to advance and retreat together with the movable element (12); and a second drive section attached to the housing (11) and disposed such that at least a portion of the second drive section overlaps the linear motor (14) along the axial direction. By merely a slight increase in a radial dimension, the area of a permanent magnet (23) of the movable element (12) can be sufficiently increased, and the capacity of the linear motor (14) can be increased.

Abstract: An object is to provide a drive apparatus for an injection molding machine which can generate a large thrust force and can provide short-cycled continuous drive. The drive apparatus includes a housing (11); a tubular linear motor (14) including a movable element (12) disposed within the housing (11) in a manner capable of advancing and retreating, and a stationary element (13) attached to the housing (11), the linear motor (14) serving as a first drive section; a member-to-be-driven (15) caused to advance and retreat together with the movable element (12); and a second drive section attached to the housing (11) and disposed such that at least a portion of the second drive section overlaps the linear motor (14) along the axial direction. By merely a slight increase in a radial dimension, the area of a permanent magnet (23) of the movable element (12) can be sufficiently increased, and the capacity of the linear motor (14) can be increased.

Abstract: An object is to provide a mold-clamping apparatus which can reduce the dimension in the axial direction. The apparatus includes a first stationary member to which a stationary mold (15) is attached; a first movable member disposed in opposition to the first stationary member and to which a movable mold (16) is attached; a second movable member which is advanced and retreated in association with advancement and retreat of the first movable member; a mold-clamping-force transmission member connecting the first and second movable members; and a drive section which opens and closes a mold, the drive section advancing and retreating the first movable member to thereby effect mold opening and closing. The drive section which opens and closes the mold overlaps at least a portion of the mold-clamping-force transmission member.