Abstract: The present invention provides a core block for a motor and a method for producing the core block, which can be efficiently produced and in which the size of a plastic region with poor properties that is formed on an electromagnetic steel sheet of the core block is reduced. This core block for a motor comprises electromagnetic steel sheets laminated on each other, said core block being obtained by carrying out an edge part forming process using electrical energy or optical energy to form the whole or part of the circumferences of edge parts of the electromagnetic steel sheets of the core block and carrying out press working to punch the electromagnetic steel sheets before or after the edge part forming process that uses electrical energy or optical energy.

Abstract: A molded component retrieving apparatus and a molding machine with the molded component retrieving apparatus include first and second units. The first unit includes a base, first to third arms and a first lift arm. The second unit includes fourth to sixth arms and a second lift arm. The second unit is removably mounted on the third arm through an intermediate base member. Rotary shafts of the arms are parallel. A holding unit to hold and retrieve the molded component or the runner is arranged at the forward end of the first and second lift arms. The third and sixth arms can be kept in position even when the drive sources are reduced in number and other arms are pivoted using a belt and a pulley.

Abstract: An arm structure (10) of an industrial robot includes a wrist unit (61) rotatable around a first axis (X) and a second axis (Y) perpendicular to the first axis and an arm unit (10?) for supporting the wrist unit rotatably around the first axis. The arm unit has a bottom casing (12), which in turn has arranged thereon at least a first motor (31) used to rotate the wrist unit around the first axis and a second motor (32) used to rotate the wrist unit around the second axis. Further, the arm unit has a cover casing (11) engaged with the bottom casing perpendicular to a plane containing the output shafts of the motors. As a result, the casing of the arm structure is reduced in both weight and size.

Abstract: A control device including an operation monitoring section for monitoring the operating state of an electric motor, and an operation control section for controlling the operation of the electric motor in accordance with a monitored result of the operation monitoring section. The operation monitoring section includes a data obtaining section for obtaining operational data of the electric motor; a threshold determining section for selecting and determining an applicable threshold actually comparable with the operational data, from among mutually different first and second thresholds provided for comparison with the operational data, in a manner as to comply with a given condition in connection with a temperature of the electric motor; and an abnormal-operation judging section for comparing the operational data obtained in the data obtaining section with the applicable threshold determined in the threshold determining section, and judging whether there is an abnormality in the operation of the electric motor.

Abstract: A formed article taking-out apparatus used for taking out a formed article from a forming machine.

Abstract: An extracting device for easily exchanging a mold. The extracting device is attached to an upper side of a molding machine using an adapter plate. The extracting device includes a plurality of arms configured to rotate about vertical axes and a vertical motion arm, having a gripper, mounted to the end of the arms. The mold attached or to be attached to a mold fixing member is lifted, lowered or translated to the side of the molding machine. The arms of the extracting device are rotated to be away from a conveying path of the mold such that the arms do not obstruct the conveying path. In this way, a useful conveying path of the mold may be maintained, thereby the mold or a part of a crane or the like for the mold does not contact the extracting device and the mold may be easily exchanged.

Abstract: An extracting device capable of extracting a molded article to both of a front side and a back side of a molding machine. The extracting device is loaded on an upper side of the molding machine. The extracting device includes a plurality of arms configured to rotate about vertical axes and a vertical motion arm mounted to the end of the arms. The vertical motion arm has a gripper at its front end for gripping the molded article. The molded article may be extracted to the back side of the machine by moving the end of the arms rotatable about the vertical axes to the back side. Also, the molded article may be extracted to the front side of the machine by moving the end of the arms to the front side. Even when the molded article is extracted to the front side of the molding machine, the extracting device cannot disturb the work of the operator and the safety of the operator may be ensured.

Abstract: A manual operating unit for operating a robot in a manual mode, for the purpose of a teaching operation, a start/stop operation, or the like. The manual operating unit includes a housing; a robot diagram provided on the housing for schematically showing an external appearance of a robot mechanical section; an index provided on the housing in association with the robot diagram for representing a plurality of directions of motions to be performed by the robot mechanical section under control; and a motion command section provided on the housing in association with the index for causing the robot mechanical section to perform the motions in the directions represented by the index. For example, the index includes a drawing illustrating three coordinate axes of a three-axis rectangular coordinate system provided for the robot mechanical section.

Abstract: A molded-product removing device (10) includes a base (10), a rotation arm mechanism including a plurality of rotation arms (12, 14, 16) serially connected to each other so as to be rotatable about vertical axes (11, 13, 15), respectively, and a lift arm (17) mounted on the forward end rotation arm (16) of the rotation arm mechanism for moving up and down a holding mechanism arranged at the forward end thereof. The lift arm (17) is configured as a two-stage speed increasing mechanism and a pinion-rack mechanism for driving the two-stage speed increasing mechanism.

Abstract: A molded component retrieving apparatus and a molding machine with the molded component retrieving apparatus mounted thereon are disclosed. A first unit (3) of the molded component retrieving apparatus includes a base (10), first to third arms (12, 14, 16) and a first lift arm (17). A second unit (4) includes fourth to sixth arms (20, 22, 24) and a second lift arm (25). The second unit (4) is removably mounted on the third arm (16) through an intermediate base member (18). The rotary shafts (11, 13, 15, 19, 21, 23) of the arms are aligned in the same axial direction. A holding unit to hold and retrieve the molded component or the runner is arranged at the forward end of the first and second lift arms (17, 25).

Abstract: An emergency stop switch mechanism for a robot which can take an emergency position when an external operation force is released and when a strong external operation force is applied. When the robot operation is started, a main lever La is pushed down from the OFF state with a normal external operation force. Since an elastic biasing force S2 is sufficiently larger than S1, a second ancillary lever Lc is pushed by a plunger PL and is turned downward together with a first ancillary lever Lb. A movable contact element ME of a contact mechanism section CM is moved to the ON position by the second ancillary lever Lc, so that the ON state (motion permitting state) is established. If emergency stop becomes necessary, the pressure of the main lever La is released from this state, or a specially strong force is applied to the main lever La. When the former is selected, the movable contact element ME is returned to the OFF position.

Abstract: A deadman switch mechanism and a teaching operation panel equipped with the deadman switch mechanism, in which possibility of losing a safety function is low even if failure happens in a contact or other elements of a circuit. When an operator grips at least one of grip levers (GL1; GL2) with normal force, the grip levers turn around axes (AX4; AX5), shoulder portions (SD1; SD2) abut on slave levers (SL1; SL2) and turns the slave levers connected by a link (LK) around an axis (AX3) in the direction denoted by an arrow B, simultaneously, so that switches (SW1; SW2) are turned into an ON-state, simultaneously. Then, two circuits including those switches, respectively, output ON-signals independently and these signals are subjected to AND process, to allow the robot to operate.

Abstract: An apparatus for holding a plurality of workpieces (W) in a stack on a pallet (22), supporting the workpieces (W) in place on the pallet (22) by a plurality of workpiece support rods (26), and transporting and transferring the uppermost workpiece by a workpiece gripping hand (50) provided with gripping fingers (54) to a desired position, is provided with elastic lifting springs (32) for continuously biasing the workpiece support rods (26) upward to support the workpieces (W) stably in place by the upright work support rods (26). The workpiece gripping hand (50) grips the uppermost workpiece (W) with the gripping fingers (54) without interference, after depressing the workpiece support rods (26) with a depressing plate (56) provided on the back side of the gripping fingers (54) so that the uppermost workpiece (W) is exposed above the upper ends of the workpiece support rods (26), and then transports the workpiece (W) to a desired position.

Abstract: A compound drive mechanism (30) according to the invention is capable of driving an output element (10, 40) of an industrial robot for a linear motion along an axis and of rotating the output element (10, 40) independently of the linear motion of the output element (10, 40). The mechanism includes a linear-motion drive motor (M.sub.1) for driving the output element (10, 40) for linear motion, a rotation drive motor (M.sub.2) for driving the output element (10, 40) for a rotational motion arranged at a fixed position, a linear motion transmitting system (12 and 14; 42 and 44) for transmitting a linear motion to the output element (10, 40) a rotational motion transmitting system (18 and 20; 48 and 50) for transmitting a rotational motion to the output element (10, 40), and a rolling contact bearing (18, 46) interconnecting the linear motion transmitting means (12 and 14; 42 and 44) the rotational motion transmitting means (18 and 20; 48 and 50) to thereby obviate interference between those transmission systems.

Abstract: A corrective positioning method in a robot, capable of eliminating degraded positioning accuracy attributable to inherent errors in the robot. By using displayed rotary angles of first and second links (1, 2) determined by a mastering sequence associated with known points, a simultaneous equation including, as unknowns, link length errors (.DELTA.11, .DELTA.12) and actual rotary angles (.theta.1, .theta.2) of the links is solved, to thereby determine the link length errors, errors (.DELTA.X0, .DELTA.y0) of a pivotal center position of an arm, and errors (.DELTA..theta.10, .DELTA..theta.20) of rotary angles of the links.