Abstract: An automatic workpiece delivery apparatus includes a support member mounted on a body for vertical movement. A slide bar is supported by the support member for horizontal movement and has a pair of workpiece holders at its opposite ends. First and second cams are mounted on a common cam shaft. First and second cam mechanisms are operable respectively in response to the cam surfaces of the first and second cams. A first displacement transmitting mechanism operatively connects the first cam mechanism to the slide bar for displacing the slide bar horizontally. A second displacement transmitting mechanism operatively connects the second cam mechanism to the support member for displacing the support member vertically. A motor has an output shaft connected to the cam shaft for rotating the first and second cams.

Abstract: An automatic feeding apparatus is disclosed which includes an arm having at one end a hand for holding a workpiece and which is pivotally mounted at the other end in a vertically movable manner, a swinging member that is swung by a swinging mechanism driven by a single motor and which is swung to move the other end of the arm vertically, and a guide member that is shifted along a guide groove in conjunction with the swinging motion of the swinging member to control the movement of the one end of the arm holding the workpiece. The guide groove consists of a curved area that controls a horizontal movement of the one end of the arm and straight areas that control the vertical movements of the one end of the arm at each extremity of the horizontal movement. The swinging action of the swinging member causes the hand to move horizontally between the feed position and working position of the workpiece and to move vertically by a predetermined distance at each position.

Abstract: A turnover apparatus for use in the secondary working stage of a press line is disclosed. The apparatus includes a bed that rotatably supports a main shaft, a pair of links the base of each of which is rotatably connected to each end of the main shaft, an inverting shaft parallel to the main shaft which is rotatably connected to the top end of each link, a piston rod in a driving cylinder connected to one of the two links, said piston rod causing the link to rotate about the main shaft, a pinion fixed to the main shaft, a piston in an inverting cylinder connected to a rack that engages the pinion, two sprockets of the same diameter fixed to both the main shaft and inverting shaft, a chain extending between the sprockets, an inverting plate fixed to the inverting shaft horizontally and a receiving plate rotatably connected to the inverting shaft.

Abstract: An apparatus for unloading a workpiece from a pressing machine includes a power cylinder mounted on the pressing machine and having a horizontally movable piston rod. An operating rod is mounted on the pressing machine in parallel relation to the piston rod and is horizontally movable. The stroke of the operating rod is shorter than the stroke of the piston rod. A linkage assembly is attached to the forward ends of the piston rod and operating rod so that the operating rod is moved horizontally together with the piston rod during its stroke. The linkage assembly has a forward end which is vertically moved toward and away from a die of the press upon the horizontal movement of the piston rod relative to the operating rod at a final portion of the extending stroke thereof and at an initial portion of the retracting stroke thereof. A plurality of suction cups are connected to the forward end of the linkage assembly.

Abstract: A control device for a press secondary machining line includes a main control unit for controlling auxiliary control units which are provided respectively in operation blocks which are obtained by dividing the line in such a manner that each block includes one press, each auxiliary control unit controlling a press and a workpiece supplying and/or removing unit in its own block.

Abstract: A reversing device for press worked goods which is to be arranged between presses in the secondary press working line, wherein the press worked goods are reversed by 180.degree. for next pressing process. The reversing device comprises in combination a slide base, a slider attached to the slide base, a reverse plate rotatably supported on the slider, a reversing drive apparatus for reciprocatively rotating said reversng plate and a straightway drive apparatus for reciprocative movement of the slider.

Abstract: A feeding apparatus in pressing machine which performs sequential predetermined pressing operations on a workpiece at two or more working positions spaced by given intervals, which includes a holder means provided in such a manner that it can be reciprocated between adjacent working positions a suction means that is held by said holder means and which stops applying suction to the workpiece at one of said working positions, and a pivoting mechanism for pivoting said holder means to a position where it does not interfere with the pressing operation of said pressing machine, the workpiece under suction of the suction means at one working position being sent to the next working position by the movement of the holder means and retracted to said non-interfering position by pivoting said holder means after said suction means stops applying suction to the workpiece and before the pressing machine starts to operate.