Murata Manufacturing Co., Ltd.

Yoshikazu Sasaoka

Satoru Takeuchi

Shinichiro Kuroiwa

Yasunori Taseda

Mitsuru Ikeda

Takayuki Kayatani

Kotaro Shimizu

Masaki Hirota

Akihiro Hayashi

Kohei Maeda

Minako Takahashi

A transfer device, for transferring components at high speed and inspecting the components, includes a first transfer mechanism including a first transfer section including a first transfer surface that moves along a first transfer path connecting a loading position to a delivery position, and a second transfer mechanism including a second transfer section that moves along a second transfer path connecting a receiving position spaced from the delivery position by a first distance to a discharging position. The second transfer section includes a second transfer surface that continuously rotates about a rotation axis along the second transfer path. A moving direction of the first transfer surface at the delivery position intersects a moving direction of the second transfer surface at the receiving position in a plan view of the first transfer surface. The second transfer mechanism includes a generator that generates an attraction force toward the second transfer surface.

Transfer device and transfer method

In a method of identifying a direction of stacking in a stacked ceramic capacitor, while density of magnetic flux generated from a magnetism generation apparatus is measured with a magnetic flux density measurement instrument, a stacked ceramic capacitor is caused to pass between a magnetism generation apparatus and the magnetic flux density measurement instrument and variation in magnetic flux density at least at the time of passage of the stacked ceramic capacitor is measured. Based on a result of measurement of magnetic flux density, a direction in which a plurality of internal electrodes are stacked in the stacked ceramic capacitor is identified.

Method of manufacturing stacked ceramic capacitor including identifying direction of stacking in stacked ceramic capacitor

An electronic component includes an inner electrode inside of a main body and exposed at a surface of the main body, and an outer electrode on a surface of the main body and electrically connected to the inner electrode, wherein a plurality of recesses are provided in a surface of the outer electrode, and each of the plurality of recesses includes a portion in which a diameter of an opening of the recess gradually decreases toward an opening side of the recess.

Electronic component and electronic component built-in board

A controller identifies a stacking direction of internal electrodes in an electronic component, based on magnetic flux density detected by a magnetic flux density detector when the electronic component passes between a magnetic generator and the magnetic flux density detector. The controller instructs a sorter to sort out, based on the identified stacking direction of the internal electrodes, the electronic component in which the stacking direction of the internal electrodes is consistent with a predetermined direction. A conveying mechanism includes a conveying table with a plurality of concave portions, and conveys electronic component fixed in position in the concave portions.

Apparatus for manufacturing a series of taped electronic components, method for manufacturing a series of taped electronic components, apparatus for conveying electronic components, method for conveying electronic components, and a series of taped electronic components

A method of identifying a direction of a multilayer ceramic capacitor includes the steps of transporting a plurality of multilayer ceramic capacitors in one line before each of a magnetism generator and a magnetic flux density measurement instrument, measuring a magnetic flux density with the magnetic flux density measurement instrument at the time when each of the plurality of multilayer ceramic capacitors passes before the magnetic flux density measurement instrument, and identifying a direction of stack of the multilayer ceramic capacitors based on the magnetic flux density measured in the step of measuring a magnetic flux density.

Method of identifying direction of multilayer ceramic capacitor, apparatus identifying direction of multilayer ceramic capacitor, and method of manufacturing multilayer ceramic capacitor

A ceramic electronic component includes a first fired electrode layer disposed on top of a ceramic body. The first fired electrode layer includes first to fifth portions that are separate from each other. The first portion is disposed on top of a first end surface. The second portion is disposed on top of a first principal surface. The third portion is disposed on top of a second principal surface. The fourth portion is disposed on top of a first side surface. The fifth portion is disposed on top of a second side surface.

Ceramic electronic component

An electronic component has dimensions (length&#xd7;width&#xd7;thickness) of about 0.6 mm to about 1.0 mm&#xd7;about 0.3 mm to about 0.5 mm&#xd7;about 0.07 mm to about 0.15 mm. An area of a triangle defined by a first hypothetical straight line being in contact with the top of a portion of an outer electrode positioned on a first main surface at a center in the width direction and extending in the length direction, a second hypothetical straight line being in contact with the top of a portion of the outer electrode positioned on the first end surface at the center in the width direction and extending in the thickness direction, and a third hypothetical straight line being in contact with the outer electrode at the center in the width direction and being inclined at about 45&#xb0; with respect to the first and second hypothetical straight lines is about 450 &#x3bc;mor larger.

Electronic component

Method of identifying direction of stacking in stacked ceramic capacitor

A workpiece conveying apparatus for conveying a workpiece disposed in a through hole in a conveying table allows the workpiece to be reliably dismounted from the through hole using compressed gas, suppresses the workpiece from unintentionally jumping out because of residual pressure of the compressed air, and increases the conveying efficiency. In an electronic-component conveying apparatus, a conveying table is arranged to face a conveying surface of a conveying stage, with an electronic component disposed in a through hole in the conveying table. When the conveying table is rotated, the electronic component is conveyed. The conveying surface has an exhaust hole at a position where the electronic component is to be dismounted. The total area of the opening of the exhaust hole in the conveying table is larger than the area of the surface of the electronic component facing the conveying surface of the conveying stage.

Workpiece transfer apparatus and electronic component transfer apparatus

An electronic-component conveying apparatus that conveys an electronic component by holding the electronic component in a through hole provided in a conveying table of the apparatus, in which the electronic component can be quickly and reliably dismounted from the through hole by using compressed gas, and undesired popout of the electronic component due to a residual pressure infrequently occurs, whereby the efficiency in the conveying process can be increased. A workpiece conveying apparatus includes a blowhole opening in a conveying surface of a conveying stage and configured such that an electronic component held in a through hole is dismounted by using compressed gas at a position where the through hole overlaps the blowhole while a conveying table is driven, a vacuum groove communicating with the blowhole and provided in a first surface of the conveying table, and an auxiliary blowhole connected to a compressed-gas supply device and opening in the conveying surface such as to be accessible to the vacuum groove.

An electronic component conveying apparatus is provided in which an electronic component is accommodated in a through-hole of a conveyer table and is conveyed. The electronic component can be reliably picked up from the through-hole using a compressed gas in a short time. In addition, undesired exhaust of the electronic component due to a residual compressed air can be prevented, and the conveying efficiency can be increased. In an workpiece conveying apparatus, a first surface of a conveyer table includes a pressure relief groove that extends from a location at which the pressure relief groove overlaps with an exhaust hole in a direction crossing a conveying direction and communicates with a suction recess portion when the conveyer table is rotationally driven. Alternatively, the first surface includes a pressure relief hole for relieving pressure to the atmosphere.

Workpiece transporting apparatus and electronic component transporting apparatus

An apparatus for measuring the electrical characteristic of a chip-shaped electronic component having first and second external terminal electrodes at first and second opposing ends thereof includes a holder that holds an electronic component with the first and second external terminal electrodes pointing toward first and second open ends of a receiving cavity. The holder is provided with a shield layer extending between first and second measuring terminals, and the shield layer is electrically connected to a measurement reference potential. The shield layer reduces the stray parasitic capacitance adjacent to the electronic component, and reduces measurement errors resulting from size variations of the electronic component.

Characteristic measuring apparatus for electronic components

An electronic-component conveying device includes a conveying plate which moves in one conveying direction and has a plurality of component-holders arranged at a predetermined pitch along the conveying direction. This conveying device further includes component-containers each containing a plurality of electronic components for supplying the components to the holders. The electronic components are held by the holders while being conveyed by the conveying plate. Cameras, i.e. a component-detecting unit, are provided for detecting the presence of the electronic components in the holders. A controller, i.e. a component-feeding unit, is provided for feeding additional electronic components to each of the containers based on the detection of the presence of the electronic components.

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Nagaokakyo, Japan

Yoshikazu Sasaoka