JPH0656828B2 - Chip part polarity determination method - Google Patents

Description

The present invention relates to a method for determining the polarity of a polar chip component, and more particularly to a method for determining the polarity of a chip-type solid electrolytic capacitor that is molded and packaged.

[Conventional technology]

A conventional method for determining the polarity of a chip-type solid electrolytic capacitor will be described with reference to FIGS. 3 and 4.

Generally, as shown in FIG. 3, the polarity of a chip type solid electrolytic capacitor is determined by the ink indicator on the upper surface of the exterior resin 1 in the same direction as the anode lead 4 drawn from the capacitor body (not shown). 2 is detected by the optical detector 6 as shown in FIG. 4, converted into an electric signal, and then discriminated by the controller 7. In the figure, 3 is a product name and 5 is a cathode lead.

[Problems to be solved by the invention]

In the above-described conventional method for determining the polarity of the chip type solid electrolytic capacitor, since the optical detector 6 detects the anode display color band 2 by the ink marking, the marking state (missing of the marking, shading,
It is easily affected by (such as disappearance), and there is a risk of misjudgment,
It has the drawback of poor reliability.

An object of the present invention is to provide a method for determining the polarity of a chip component that solves the above problems.

[Differences from the Prior Art of the Invention]

The present invention is different from the above-described conventional polarity determination method in that the polarity determination is performed by converting the difference in the lead-out position of the positive / cathode extraction lead into a detection level difference.

[Means for solving problems]

The present invention is a method for determining the polarity of a resin-coated chip component in which a metal plate-shaped lead is pulled out, in which the difference in the distance between the resin-coated surface inside the resin and the anode lead-out lead surface and the cathode lead-out lead surface is detected outside the resin. A method for determining the polarity of a chip component, which is characterized by detecting the polarity of the chip component by detecting it with a container.

〔Example〕

 Next, the present invention will be described with reference to the drawings.

(Embodiment 1) FIG. 1 is a block diagram of a polarity discriminating system showing a first embodiment of the present invention. In FIG. 1, reference numeral 10 is a capacitor element, and a cathode lead 5 is provided on the peripheral surface of the capacitor element 10.
Are fixed mechanically and electrically. The anode lead 11 is welded to the anode lead 11 led out from the center of the element 10. After molding with exterior resin 1,
The cathode lead-out leads 4 and 5 are bent along the outside of the resin to form a chip component. A detector 12 such as a magnetic sensor is provided on the resin outer upper surface of the chip component formed in this way, and the positive and negative electrode lead leads 4 and 5, the anode lead 11, and the capacitor element 10 are provided.
It is arranged at the center 4c, 5c of one of the connecting surfaces 4a, 5a. The detection level of the detector 12 is previously detected at the center 4c of the connecting surface between the anode lead 4 and the anode lead 11 and not detected at the center 5c of the connecting surface between the cathode lead 5 and the capacitor element 10. Positive / cathode extraction lead
The polarity is determined by converting the difference in the derived positions of 4 and 5 into the difference in the detection level.

(Embodiment 2) FIG. 2 is a configuration diagram showing a second embodiment of the present invention. The detectors 112 and 12 such as a magnetic sensor are provided on the upper surface of the resin outer surface of the chip component having the same structure as that of the first embodiment, and the positive / cathode extraction leads 4,
Center of connection between 5 and anode lead 11, capacitor element 10 4c, 5
The detection levels of the detectors 112 and 12 are provided on both sides of c, and the controller 13 is set to a level at which the anode-side connecting surface center 4c detects and the cathode-side connecting surface center 5c does not detect.

In this embodiment, since two detectors 112 and 12 are used for detection, not only the reliability is doubled, but also both the positive and negative electrode lead leads 4 and 5 bent on the bottom surface of the resin exterior are detected. However, there is an advantage that the inside-out chip component can be identified.

〔The invention's effect〕

INDUSTRIAL APPLICABILITY As described above, the present invention can easily and accurately determine the polarity by converting the difference in the lead-out position of the positive / cathode extraction lead into the detection level difference in the chip type solid electrolytic capacitor, and the manufacturing process of the capacitor and the circuit board. It has a wide range of applications, such as mounting evaluation, and has the effect of enabling highly reliable automation.

[Brief description of drawings]

FIG. 1 is a block diagram of a polarity discrimination system showing a first embodiment of the present invention, FIG. 2 is a block diagram of a polarity discrimination system showing a second embodiment of the present invention, and FIG. 3 is a conventional chip type. FIG. 4 is a perspective view of the solid electrolytic capacitor after marking, and FIG. 4 is a configuration diagram of a conventional polarity discriminating system. 1 ... Exterior resin, 2 ... Anode display color band 3 ... Product name, 4 ... Anode extraction lead 4a ... Connection surface between anode extraction lead and anode lead 4c ... Connection surface between anode extraction lead and anode lead Center 5 …… Cathode extraction lead 5a …… Connection surface between cathode extraction lead and capacitor element 5c …… Center of connection surface between cathode extraction lead and capacitor element 6 …… Optical detector, 7,13 …… Controller 10… … Capacitor element, 11 …… Anode lead 12,112 …… Detector

Claims (1)

[Claims] 1. A method for determining the polarity of a resin-coated chip component in which a metal plate-shaped lead is drawn out, wherein the difference in the distance between the anode drawing lead surface and the cathode drawing lead surface inside the resin from the resin covering surface is provided outside the resin. A method for discriminating the polarity of a chip component, wherein the polarity of the chip component is discriminated by detecting the polarity of the chip component.