Abstract: A painting robot capable of reducing the influence of pressure fluctuations when paint is discharged or stopped. The painting robot includes a robot arm having a painting head unit attached to its tip, a paint supply mechanism provided between robot arm and painting head unit; and a control unit. The paint supply mechanism includes a paint circulation channel; paint transfer means and regulating valves provided in the middle of the paint circulation channel. The control unit is configured with a feedback control unit that calculates a pressure calculation value for executing feedback control .

Abstract: A coating device has a coating head that dispenses coating material toward a vehicle body. The coating device also includes a supply device that has a circulation path for circulating the coating material between a reservoir storing the coating material and the coating head, and is capable of controlling the pressure of the coating material flowing through the circulation path. The coating device includes an arm having the coating head and the supply device, wherein the coating robot performs coating of the vehicle body while moving the coating head wherein the coating head moves at a first speed toward a coating start position to start coating the vehicle and moves at a second speed different from the first speed when it reaches a specific position in a movement path to the coating start position.

Abstract: A robot for coating a vehicle body includes a coating head, a reservoir for storing coating material, a supply device capable of controlling the pressure of coating material flowing through a circulation path provided between the coating head and the reservoir, and an arm having a coating head and a supply device. The arm is a multi-axis arm having multiple arm members and a movable shaft connecting each arm member to each other, and it has a posture control means that controls the posture of the multiple arm members during coating of the vehicle body by the coating head to maintain the relative position of the coating head and the supply device at a constant level or to suppress fluctuations in the relative position within a predetermined allowable range.

Abstract: [Problem to be solved] Provided is a painting robot capable of realizing at least one of improvement in movement performance, reduction of the influence of a water head pressure difference, and prevention of occurrence of a state in which the pressure cannot be adjusted by a first adjustment valve and a second adjustment valve.

Abstract: A painting robot includes a painting head mounted on the tip end side of a robot arm, a coating material supply passage connected to the coating material supply side of the painting head, a return flow passage which recovers coating material that was not ejected from the nozzles, and a bypass flow passage that is provided in the robot arm and allows coating material to flow through in parallel to the painting head. The painting robot further includes a shutoff valve, a control unit which controls the opening and closing of the shutoff valve, and a first air bubble removal member and second air bubble removal member which are provided in a stable part of the robot arm.

Abstract: An automatic coating apparatus which is arranged to guarantee higher operational reliability, particularly to preclude coating defects as caused by malfunctioning of a cartridge gripper (56) or by the use of an non-replenished or deficiently replenished paint cartridge. A cartridge gripper assembly (55) is constituted by a gripper member (56) with gripper claws for gripping a paint cartridge (25), a grip detector switch (67) which is adapted to detect whether or not the paint cartridge (25) is securely gripped by the gripper. (56), and a replenishment level detector switch (68) which is adapted to detect whether or not the paint cartridge (25) is replenished with paint to a predetermined extent. Therefore, as the paint cartridge (25) is gripped by the cartridge gripper (56), the grip condition on the paint cartridge (25) can be monitor by the grip detector switch (67).

Abstract: A torque transmission unit comprises a worm wheel engaged with a worm of an armature of a motor, a gear casing housing therein the worm wheel, and an output disk operationally engaged at one end face thereof with the worm wheel through a damper. The output disk is provided on the one end face thereof with a hollow projection integrated with the output disk. The projection extends through an opening of the gear casing, from which a torque of the motor is taken out.

Abstract: An electric motor having a cylindrical frame with a thickness less than that of conventional electric motors. A tubular inner yoke is inserted in the cylindrical frame and in combination therewith serves as a magnetic path. The total thickness of the cylindrical frame and the inner yoke serves as a magnetic path substantially the same as that of a conventional electric motor frame. The inner yoke and thinner frame construction of the present invention reduces the total weight of the electric motor as compared with conventional electric motors. Additionally, the inner yoke has a plurality of protrusions for positioning the permanent magnets of the electric motor both axially and circumferentially thereon.

Abstract: A worm gear for driving devices such as automobile power windows and power seats the operating positions of which have to be precisely determined. The worm gear motor has a built-in sensor means having a torque transmission plate engaged with a motor-driven worm wheel having an output shaft in its center and at least one circumferentially extending notch on the periphery, a magnet disposed on one side of the torque transmission plate along the path of the notch during rotation of the torque transmission plate and a magnetic sensor disposed on the other side of the torque transmission plate opposite the magnet. The sensor repeats ON-OFF cycles according to the presence or absence of the notch while said motor is in operation, detecting a predetermined rotational position of the output shaft by the signal attained by the sensor, and attaining a high positional determination of the motor output shaft regardless of backlash of engaged gears and mechanical inertia of the motor components.

Abstract: A motor coupled with a worm gear for output power transmission has a motor shaft with a worm held in mesh with the worm gear. The worm gear has a plurality of circumferentially spaced holes. An annular damper of rubber has a plurality of first circumferentially spaced projections on one axial surface thereof and fitted respectively in the holes in the worm gear, and a plurality of second circumferentially spaced projections on the opposite axial surface thereof and fitted respectively in a plurality of circumferentially spaced holes defined in a torque transmission disc coupled to a power output shaft for corotation.

Abstract: In an axial gap type coreless electric motor, a frame bracket (16), which is disposed facing a field magnet (12) with a rotary armature (14) inserted in between, has radial ribs (19) formed outside thereof and disposed radially from a central part to a peripheral part of the frame bracket. The ribs are tapered, with their heights and widths gradually narrowed from the center part to the peripheral parts of the frame bracket.

Abstract: An attachment structure for brush holder springs in a motor includes a motor bracket mounted on a motor frame. The bracket has a pair of diametrically opposite projections on inner peripheral wall surfaces thereof. A pair of brush holder springs each supporting on one end portion thereof a brush for sliding contact with a motor commutator have on an opposite end portion thereof a dovetail-shaped gripping members fitting complementarily over each projection, respectively, under resilient force.

Abstract: Disclosed is a variable DC voltage device wherein one terminal of a DC power supply, a switch, a first coil of a transformer, a second coil mounted on a core of the transformer with the same polarities with those of the first coil, a diode for preventing a shortcircuiting of the DC power supply when the switch is closed and the other terminal of the DC power supply are connected in series in the order named; a load is interconnected between the junction between the first and second coils and the other terminal of the power supply; and a compensation circuit is provided for restoring to an initial state the flux variation caused when the switch is closed, whereby the load is controlled by the alternate opening and closing of the switch.