Abstract: This invention is directed to the prevention of the deterioration of the accuracy in component mounting by suppressing the temperature rise of the moving member as much as possible by cooling the moving member, which is the heat source of a linear motor. The moving member 48 of the linear motor 14 is configured in the following manner for achieving the objective of this invention. That is, the heat dissipation portion, the axis 17 made of the material with efficient thermal conduction such as aluminum, pierces through the iron core 18 around which coils 20 are wound. The moving member except a part of the axis 17 is molded with synthetic resin, and at one end of the axis 17, the heat dissipation fin 19 which makes heat dissipation area larger is formed. And this heat dissipation fin 19 is placed to face the air exhaust port 67.

Abstract: An optical communication device for communication between a stator-side circuit and a rotor-side circuit is provided as one aspect of the invention. A pair of optical couplers are interposed between a stator and a rotor, for permitting bi-directional communication between the circuits. One optical coupler has a rotor-side light-receiving element arranged on the rotor with the axis of rotation extending therethrough, and a stator-side light-emitting element arranged on the stator at a location away from the axis of rotation. The other optical coupler has a stator-side light-receiving element arranged on the stator with the axis of rotation extending therethrough, and a rotor-side light-emitting element arranged on the rotor at a location away from the axis of rotation. A slip ring unit for an electronic component-mounting apparatus is provided as another aspect of the invention. The slip ring unit electrically connects between a rotor-side circuit and a stator-side circuit.

Abstract: There is provided a mounting head for an electronic component-mounting apparatus. A nozzle holder has a plurality of vacuum nozzles arranged circumferentially about an axis thereof in a manner such that each vacuum nozzle is capable of projecting from the nozzle holder and retracting in the nozzle holder. A holder support member supports the nozzle holder in a manner such that the nozzle holder can rotate about the axis thereof. A nozzle-rotating motor drives the nozzle holder about the axis thereof for rotation in normal and reverse directions. The nozzle holder is driven for rotation by the nozzle-rotating motor to bring one of the vacuum nozzles selected for use to a projecting position. The selected one is caused to project from a lower end face of the nozzle holder at the projecting position. A plurality of cam followers are mounted at respective upper portions of the vacuum nozzles.

Abstract: Apparatus for feeding electronic components comprises a slide base, a plurality of tape cassettes mounted on the slide base, a linear motor 14, and a control unit for the motor. The control unit includes a motor driver 61, a memory device 66, and a control device 67 which controls the motor driver 61 using data stored in the memory device 66. The control device 67 adjusts the data for controlling the motor according to the load weight of the slide base. The data is used for properly moving the slide base carrying a plurality of tape cassettes to a position for feeding the components.

Abstract: There is provided a mounting head for an electronic component-mounting apparatus. A nozzle holder has a plurality of suction nozzles arranged circumferentially about a vertical axis thereof in a manner such that each suction nozzle is capable of projecting from the nozzle holder and retracting in the nozzle holder. A holder support member supports the nozzle holder in a manner such that the nozzle holder can rotate about the vertical axis thereof. Rotation drive means drives the nozzle holder for rotation in normal and reverse directions. The nozzle holder is driven for rotation by the rotation drive means to bring one of the suction nozzles selected for use to a projecting position. The selected one is caused to project from a lower end face of the nozzle holder at the projecting position. A plurality of cam followers are mounted at respective upper portions of the suction nozzles. The cam followers are in contact with an annular end cam in a manner such that the cam flower can move on the annular end cam.

Abstract: There is provided a lift cam mechanism for an electronic parts-mounting apparatus including a vertical shaft and at least one mounting head arranged around the vertical shaft. The lift cam mechanism operates to lift and lower an associated one of the at least one mounting head as each mounting head is moved about the vertical shaft. A cylindrical cam is concentrically disposed with respect to the vertical shaft. The cylindrical cam has a protruding portion formed on a peripheral surface thereof in a manner such that the protruding portion has a generally annular shape and provides upper and lower cam surfaces. A pair of upper and lower cam followers are arranged respectively on the upper and lower cam surfaces of the protruding portion in a manner such that the pair of upper and lower cam followers sandwich the protruding portion therebetween in a manner rollable thereon.

Abstract: There is provided a motor and an electronic parts-mounting apparatus incorporating the motor. The motor includes a rotor and a stator. The stator is comprised of a stator core formed of laminate of steel plates and arranged in a manner opposed to the rotor, holding members arranged on opposite ends of the laminate of the steel plates of the stator core, and bolts for fastening the two holding members to each other. The stator core extends to locations at which the bolts extend through the stator core.

Abstract: An electronic parts-mounting apparatus includes an index unit which has an output shaft and is connected to a reduction gear for being driven thereby. A rotatable table is connected to the index unit and driven thereby into intermittent rotation. At least one camshaft is connected to the output shaft of the index unit. At least one cam rigidly mounted on the at least one camshaft is in contact with at least one cam follower associated therewith. The output shaft of the index unit is caused to rotate at a uniform rotational speed in which one rotation thereof corresponds to a plurality of repetition periods of intermittent rotation of the rotatable table.

Abstract: An automatic electronic parts-mounting apparatus mounts chip-like electronic parts supplied from a parts feeder at predetermined positions on a printed substrate. The parts-mounting apparatus accurately and quickly determines angular positions of the electronic parts by rotating adsorptive nozzles. The adsorptive nozzles are capable of adsorbing the electronic parts one by one, and each nozzle is connected to a rotor of a nozzle-rotating motor for rotating the adsorptive nozzle within a plane that is perpendicular to an axis of the adsorptive nozzle. The rotor is rotated in accordance with the adsorbed state of the electronic parts to make fine adjustment for determining the angular position.

Abstract: An apparatus for automatically mounting electronic parts in which chip-like electronic parts supplied from a parts feeding device are mounted at predetermined positions on a printed substrate. For efficiently and accurately carrying out parts mounting operation by detecting the picked-up state of the electronic parts, the lower end position of the electronic part being held by a holding nozzle is identified at a plurality of points by a lower end position detecting section, while the lower end position memory section stores the detected lower end position. A selecting section selects the lowest end position among the lower end positions detected by the lower end position detecting section, and compares the obtained lowest end position data to data stored in the data memory section including lowest end position data for each sort of electronic part, and a judging section judges if the held state of the electronic part is normal or abnormal.

Abstract: An electronic parts mounting apparatus, which on the basis of a recognition result of an attitude of a tipped electronic part held on a removing nozzle obtained by a recognition device, rotates the nozzle to change the attitude of the rotational direction of the electronic part. The apparatus comprises a removing nozzle formed in its upper portion with a groove to be fitted to attract and hold the electronic part recognized by the recognition device, a vertically movable and rotatable nozzle rotating means for changing the attitude of the electronic parts in a rotational direction, a cushion means mounted on the nozzle rotating means or the removing nozzle for pressing the fitting portion against the groove to be fitted, and a sliding means for for fitting the fitting portion into the groove to be fitted while sliding the fitting portion.