摘要:
A system for performing an operation for a circuit substrate, including a plurality of main conveyors each of which conveys, positions, and supports a circuit substrate, the plurality of main conveyors being arranged in a direction perpendicular to a circuit-substrate conveying direction in which the each main conveyor conveys the circuit substrate, an operation performing device which performs at least one operation for the circuit substrate positioned and supported by the each main conveyor, at least one of (a) a carry-in conveyor which conveys the circuit substrate to the each main conveyor and loads the circuit substrate thereon, and (b) a carry-out conveyor which loads the circuit substrate off the each main conveyor and conveys the circuit substrate away therefrom, and a conveyor shifting device which selectively shifts the at least one of the carry-in conveyor and the carry-out conveyor to one of a plurality of shift positions at each of which the one conveyor is aligned with a corresponding one of the main conveyors.
摘要:
A power unit is provided which is capable of controlling electric current to be supplied to a load connected to the power unit, in a flexible manner in dependence on a load condition. Postive and negative converters of a cycloconver are connected to three-phase output windings of a three-phase generator and connected in an antiparallel manner to each other for generating a single-phase alternating current to be supplied to the load. A firing angle control device causes the positive and negative converters to be alternately switched to operate every half a repetition period of the single-phase alternating current, to thereby cause the cycloconverter to generate the single-phase alternating current. A desired wave-forming circuit forms a desired waveform of a drive signal input to the firing angle control device, for causing the firing angle control device to drive the positive and negative converters, such that the output single-phase alternating current has a desired alternating current waveform. An amplitude control circuit changes a shape of the desired waveform in dependence on variation in the load so as to stabilize an output voltage of the cycloconverter. An amplitude-limiting circuit limits amplitude of the desired waveform to a smaller value when the output voltage of the cycloconverter becomes equal to or lower than a predetermined value.
摘要:
A circuit-component supplying apparatus including a plurality of feeders each of which stores a plurality of circuit components of a same sort and which supplies the components one by one from a component-supply portion thereof, a movable table which holds the feeders such that the respective component-supply portions of the feeders are arranged along a line and which is movable in a direction parallel to the line, and a table-driving device which moves and stops the movable table to position the component-supply portion of each of the feeders at a predetermined component-supplying position, the feeders including at least one connected feeder which includes a main portion which is held by the movable table and which supports a feeding mechanism which feeds the circuit components one by one to the component-supply portion of the connected feeder, a component-holding portion which holds the circuit components and from which the components are fed to the main portion by the feeding mechanism, and a connecting device which connects the component-holding portion to the main portion such that the connecting device allows a center of gravity of the component-holding portion and the circuit components held thereby to be moved relative to the main portion in a direction substantially parallel to the line.
摘要:
An electronic-component mounting system, including a printed-circuit-board supporting device which positions and supports a printed circuit board, a movable table which is movable, relative to the printed-circuit-board supporting device, in at least one of an X direction and a Y direction which are perpendicular to each other and cooperate with each other to define an X-Y plane parallel to a board-support plane on which the printed circuit board is supported by the supporting device, an electronic-component supplying device which is mounted on the movable table and which includes a component-supply portion from which electronic components are supplied one by one, and an electronic-component mounting device which is mounted on the movable table together with the electronic-component supplying device and which receives the electronic components one by one from the component-supply portion of the supplying device and mounts at least one of the electronic components on the printed circuit board positioned and supported on the component-support plane by the printed-circuit-board supporting device.
摘要:
An electric-component supplying unit for feeding an electric-component tape which includes a carrier tape and holds a plurality of electric components at a predetermined pitch in a lengthwise direction of the carrier tape, and supplying the electric components, one by one, from the electric-component tape, the supplying unit including a frame including a tape-guide portion which guides the electric-component tape, a feeding device which feeds, in the lengthwise direction, the electric-component tape being guided by the tape-guide portion, and positions the electric components, one by one, at a component-supply position, and the frame comprising a main frame member, and at least one tape-guide member which is detachably attached to the main frame member and provides the tape-guide portion.
摘要:
An electric-component feeder for feeding a carrier tape carrying electric components at a predetermined component-carry pitch, at a tape-feed pitch equal to a quotient obtained by dividing the component-carry pitch by an integral number, and thereby supplying the electric components, one by one, the feeder including a main frame including a tape guide which guides the carrier tape in a lengthwise direction thereof; a cam which has a cam surface and which is provided on the main frame such that the cam surface is movable relative to the main frame; a cam drive device which is supported by the main frame and which drives the cam and thereby moves the cam surface relative to the main frame; a cam follower which is supported by the main frame and which follows the cam surface while being moved by the cam surface being moved by the cam drive device; and a motion converting device which is supported by the main frame and which converts the motion of the cam follower into the feeding of the carrier tape at the tape-feed pitch along the tape guide of the main frame.
摘要:
A creamed-solder printing machine for printing a creamed solder on a printed circuit board, including a screen having a plurality of holes, a squeegee which prints the creamed solder on the printed circuit board through the holes of the screen, a frame which supports the squeegee such that the squeegee is movable toward, and away from, the screen, and an elastic member which is provided between the frame and the squeegee and which produces a biasing force to bias the squeegee in a direction toward the screen.
摘要:
An apparatus for printing a printing material on a substrate, such as a printed circuit board includes: a squeegee which extends in a first direction parallel to a plane screen and which slides on the screen to squeeze the printing material into through-holes of the screen; and an outlet-defining member which is opposed to the squeegee and which cooperates with the squeegee to define an elongate printing-material outlet. A printing-material container has a printing-material chamber which extends parallel to the printing-material outlet, has a length substantially equal to a length of the outlet and communicates with the outlet over a substantially entire length thereof. A printing-material thrust member is provided in the printing-material chamber such that the printing-material thrust member is substantially fluid-tightly movable relative to the printing-material container. A container moving device moves the printing-material container relative to the screen in a second direction parallel to the screen and perpendicular to the first direction.
摘要:
An electronic component supplying apparatus including a frame member, component supplying units each including a movable member movable along a reference line, first drive sections each provided on a corresponding one of the movable members of the units, a second drive section provided on the frame member, first control devices each provided on the corresponding one movable member, a power source, a second control device provided stationarily relative to the frame member, a supplying device which includes a first supplying section provided on the frame member and second supplying sections each provided on the corresponding one movable member, has no wire connection between the first supplying section and the each second supplying section, and supplies the electric energy from the power source to the each first control device, while permitting the one movable member to be moved along the reference line, and a transmitting device which includes a first transmitting section provided on the frame member and second transmitting sections each provided on the corresponding one movable member, has no wire connection between the first transmitting section and the each second transmitting section, and transmits, from the second control device to the each first control device, information needed to control the each first drive section, while permitting the one movable member to be moved along the reference line.
摘要:
An electronic component transferring device for transferring electronic components, including a plurality of rotary members rotatable about a common axis independently of each other, a rotary motion generating device for generating rotary motions of the rotary members about the common axis over a full 360.degree. angular range such that each rotary member is stopped at each predetermined stop position during one full rotation thereof and such that the rotary members are stopped at each stop position at different times, and a plurality of component holder heads which are carried by the rotary members, respectively, and which hold the respective electronic components. The apparatus may be suitably used in an electronic component mounting system. Also disclosed are a method of transferring the electronic components and a method of mounting the electronic components.