KR920005935B1 - Lighting method for electronics parts assembly state testing - Google Patents

Lighting method for electronics parts assembly state testing Download PDF

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Publication number
KR920005935B1
KR920005935B1 KR1019900013732A KR900013732A KR920005935B1 KR 920005935 B1 KR920005935 B1 KR 920005935B1 KR 1019900013732 A KR1019900013732 A KR 1019900013732A KR 900013732 A KR900013732 A KR 900013732A KR 920005935 B1 KR920005935 B1 KR 920005935B1
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South Korea
Prior art keywords
lead
lighting
lid
lighting method
assembly state
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KR1019900013732A
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Korean (ko)
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KR920005682A (en
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정영기
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금성산전 주식회사
이희종
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Priority to KR1019900013732A priority Critical patent/KR920005935B1/en
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K13/00—Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
    • H05K13/08—Monitoring manufacture of assemblages

Abstract

The lighting method is used for detecting the bending state of lead in inspecting electronic parts mounted on PCB. The method is composed of sequential lighting by adjacent three pairs of LED units, catching the image of lead (3) by a camera provided at the rear of middle LED unit, and inspecting the bending state of the lead (3) in front/rear or left/right or diagonal directions.

Description

전자부품 조립상태 검사기의 조명방법Lighting method of electronic parts assembly inspection machine

제1도는 종래의 조명원리 설명도.1 is a diagram illustrating a conventional lighting principle.

제2도는 종래 조명장치의 평면도.2 is a plan view of a conventional lighting device.

제3도는 종래 조명방법 설명도.3 is a diagram illustrating a conventional lighting method.

제4도는 종래 조명방법에 적합한 리드의 굽힘상태를 보인 도면.4 is a view showing a bent state of the lead suitable for the conventional lighting method.

제5도는 본 발명의 조명원리 설명도.5 is an explanatory view of the lighting principle of the present invention.

제6도는 본 발명에 적용되는 영상취득장치의 사시도.6 is a perspective view of an image acquisition device applied to the present invention.

제7도는 본 발명에 적용되는 조명장치의 평면도.7 is a plan view of the lighting apparatus applied to the present invention.

제8도는 본 발명의 조명방법 설명도.8 is an explanatory diagram of an illumination method of the present invention.

제9도는 본 발명 조명방법에 적합한 리드의 굽힘상태를 보인 도면.9 is a view showing a bent state of the lead suitable for the illumination method of the present invention.

*도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 인쇄회로기판 2 : 부품1: printed circuit board 2: parts

3 : 리드 a,b,c,d : LED 유니트3: Lead a, b, c, d: LED unit

e, f,g,h : 카메라e, f, g, h: camera

본 발명의 인쇄회로기판에 조립되는 전자부품의 리드가 굽혀진 각도를 검사하기 위한 실장 PCB 영상검사기(vision machine)등의 전자부품 조립상태 검사기에 이용되는 조명방법에 관한 것으로, 특히 리드의 전.후, 좌.우 및 대각선 방향(8방향) 굽힘상태를 검출함에 적합하도록 전자부품 조립상태 검사기의 조명방법에 관한 것이다.The present invention relates to a lighting method used for an electronic component assembly state inspector, such as a PCB vision machine for mounting an angle of a lead of an electronic component assembled on a printed circuit board of the present invention. Then, the present invention relates to a method for illuminating an electronic component assembled state inspector so as to be suitable for detecting left, right and diagonal (8 directions) bending states.

통상 전자부품을 인쇄회로기판에 조립하는 부품 조립라인에서는 THT(Through Hole Type) 부품을 인쇄회로기판(Printed Circuit Board:PCB)에 자동삽입한 후 영상검사기(vision machine) 인쇄회로기판 밑면에서 리드의 삽입상태를 검사하여 삽입이 잘못된 부품을 납땜 공정 이전에 검출해 주고 있다.In general, the assembly line for assembling electronic components to a printed circuit board automatically inserts a THT (Through Hole Type) component into a printed circuit board (PCB), and then removes the lead from the bottom of the vision machine printed circuit board. Inspection of the insertion condition detects incorrect insertion before the soldering process.

이와 같은 영상검사기에 있어서는 조명기술이 매우 중요한데 조명형태에는 점조명, 선조명, 면조명등 여러가지 형태가 있으며 이들은 주로 LED(발광 다이오드), 형광등, 할로겐 램프 및 레이저등의 조명기구를 이용하고 있다.The lighting technology is very important in such an image inspector. There are various types of lighting such as point light, line light, and surface light, and they mainly use lighting devices such as LEDs, fluorescent lamps, halogen lamps, and lasers.

제1도 및 제2도는 종래 조명원리의 일예를 보인 것으로 이에 도시한 바와 같이 인쇄회로기판(1)의 하부에서 부품(2)의 리드(3)가 굽혀진 방향의 반대쪽에서 LED(4)로 빛을 주사하고, 카메라(6)로 촬영하도록 되어 있으며, 지지판(5)에 다수개의 LED(4)가 고정된 LED 유니트(a)(b)(c)(d)가 장방형으로 구성되어 있다.1 and 2 show an example of a conventional lighting principle, and as shown therein, the LED 3 is located at the lower side of the printed circuit board 1 in a direction opposite to the direction in which the lead 3 of the component 2 is bent. The light is scanned and photographed by the camera 6, and the LED units (a) (b) (c) and (d) in which a plurality of LEDs 4 are fixed to the support plate 5 are configured in a rectangular shape.

종래 기술은 검사시 리드(3)의 형태중 제4도(a)와 같은 형태의 제2도의 조명장치에서 LED 유니트 a를 온시켜 영상을 취득하고,(b)형태는 LED 유니트 b를,(c)형태는 LED 유니트 c를 (d)형태는 LED유니트 d를 온시켜 영상을 취득하고 있다.In the prior art, when the inspection is performed, the LED unit a is turned on in the lighting apparatus of FIG. 2 as shown in FIG. c) Type is LED unit c and (d) is LED unit d.

상기한 바와 같은 종래 기술은 방향에 맞은 LED 유니트 하나만 선택하여 온시키므로 제4도에 도시된 리드(3) 형태에는 적합한 조명이 될 수 있으나, 제9도에 보인 대각선 방향의 리드(3) 형태에는 적합한 조명이 되지 못하는 것이었다.In the prior art as described above, only one LED unit suitable for the direction is selected and turned on, so that the lighting may be suitable for the shape of the lead 3 shown in FIG. 4, but the shape of the lead 3 in the diagonal direction shown in FIG. There was no proper lighting.

실제예를 보면 종래 조명방법은 리드(3)의 굽힘이 제4도와 같이 발생하는 IC 부품류의 조명에는 적합하나 리드(3)의 굽힘이 제8도와 같이 대각선 방향으로 발생하는 아날로그 부품(래디얼 타임 캐패시터, 저항)에는 적합하지 못하여 좋은 영상을 취득하지 못하였고 이에 따라 검사성능이 양호하지 못한 결함이 있었다.As a practical example, the conventional illumination method is suitable for lighting of IC components in which the bending of the lead 3 occurs as shown in FIG. 4, but the analog component (radial time capacitor) in which the bending of the lead 3 occurs in a diagonal direction as shown in FIG. , Resistance), and did not obtain a good image, resulting in a poor inspection performance.

그리고 종래의 조명방법에 의하여 리드(3)가 대각선 방향으로 굽은 것까지를 양호하게 검사하기 위해서는 8벌의 LED 유니트가 필요하게 됨으로써 조명장치가 복잡하게 되는 것이었다.In addition, in order to satisfactorily inspect the lead 3 bent diagonally by the conventional lighting method, eight LED units are required, which complicates the lighting apparatus.

본 발명은 상기한 바와 같은 종래의 결함을 해소하기 위하여 안출한 것으로 대각선 방향의 리드 조명에도 적합한 조명방법을 제공하기 위한 것인바, 이를 첨부한 도면에 의하여 상세히 설명하면 다음과 같다.The present invention is to provide a lighting method suitable for the lead lighting in the diagonal direction to solve the conventional defects as described above, as described in detail by the accompanying drawings as follows.

제5도 내지 제9도에 도시한 바와 같이, 인쇄회로기판(1)의 하부에 LED 유니트(a)(b)(c)(d)가 장방향으로 배치되는 조명장치를 설치하여 조명하고, 부품(2)의 리드(3)를 카메라(e)(f)(g)(h)로 촬영하여 리드(3)의 굽힘상태를 검출함에 있어서, 제8도(a)와 같이 좌측 및 전.후측 LED 유니트(a)(b)(d)를 온하고 좌측 카메라(e)로 영상을 취득하여 제9도(a)와 같이 굽힘방향이 45; 90°,135°인 리드(3)를 검사하며, 제8도(b)와 같이 전방 및 좌.우측 LED 유니트(b)(a)(c)를 온하고 전방카메라(f)로 영상을 취득하여 굽힘방향이 0。,45。,315。인 리드(3)를 검사하며, 제8도(c)와 같이 우측 및 전.후측 LED 유니트(c)(b)(d)를 온하고 우측 카메라(g)로 영상을 취득하여 굽힘방향이 225。,270。,315。인 리드(3)를 검사하며, 제8도(d)와 같이 후방 및 좌.우측 LED 유니트(d)(a)(c)를 온하고 후방카메라(h)로 영상을 취득하여 굽힘방향이 135°,180。,225°인 리드(3)를 검사함을 특징으로 하고 있으며, 상기 LED 유니트(a)(b)(c)(d)의 온.오프제어는 제어유니트에서 행한다.5 to 9, by installing a lighting device in which the LED unit (a) (b) (c) (d) is arranged in the longitudinal direction at the bottom of the printed circuit board 1, and illuminates In detecting the bent state of the lid 3 by photographing the lid 3 of the component 2 with a camera (e) (f) (g) (h), as shown in FIG. The rear LED unit (a) (b) (d) is turned on and the image is acquired by the left camera (e), and the bending direction is 45 as shown in FIG. Examine the lead 3 at 90 ° and 135 °, turn on the front and left and right LED units (b) (a) (c) as shown in FIG. 8 (b), and acquire an image with the front camera f. Inspect the lead 3 with bending direction 0 °, 45 °, 315 °, turn on the right and rear LED units (c) (b) (d) as shown in FIG. (g) The image is taken and the lead 3 with bending directions of 225 °, 270 °, and 315 ° is examined, and the rear and left and right LED units (d) (a) ( c) is turned on and the image is acquired by the rear camera (h), and the lead 3 having the bending directions of 135 °, 180 °, and 225 ° is inspected, and the LED unit (a) (b) ( c) On / off control of (d) is performed by the control unit.

이상에서 설명한 바와 같은 본 발명은 4벌의 LED 유니트(a)(b)(c)(d)로된 조명장치를 제어하여 3벌씩 온.오프시키고 카메라로 리드(3)의 영상을 취득하여 리드(3)의 전.후, 좌.우 및 대각선 방향 굽힘형태를 검사하도록 한 것으로 리드(3)의 굽힘상태에 따라 양호한 조명을 함으로써 정확한 검사를 행할 수 있는 이점이 있다.As described above, the present invention controls a lighting device of four LED units (a) (b) (c) (d) to turn on and off three by one, and acquires an image of the lead 3 by a camera. Before and after (3), the left, right, and diagonal bending forms are inspected, which provides an advantage that accurate inspection can be performed by providing good illumination in accordance with the bending state of the lid 3.

Claims (1)

인쇄회로기판(1)의 하부에서 4벌의 LED 유니트(a)(b)(c)(d)로 조명하고, 부품(2)의 리드(3)를 카메라(e)(f)(g)(h)로 촬영하여 리드(3)의 굽힘 상태를 검사함에 있어서, 서로 인접한 3벌씩의 LED 유니트로 순차적으로 조명하고, 중간부 LED 유니트 후방에 위치한 카메라로 리드(3)의 영상을 취득하여, 리드(3)의 전.후, 좌.우 및 대각선 방향 굽힘형태를 검사함을 특징으로 하는 전자부품 조립상태 검사기의 조명방법.Four LED units (a) (b) (c) (d) are illuminated from the bottom of the printed circuit board 1, and the lid 3 of the component 2 is camera (e) (f) (g) In checking the bending state of the lid 3 by photographing with (h), sequentially illuminating with three LED units adjacent to each other, and acquiring an image of the lid 3 with a camera located behind the middle LED unit, A method of illuminating an electronic component assembly state inspector, characterized by inspecting front, rear, right, and diagonal bending forms before and after the lid (3).
KR1019900013732A 1990-08-31 1990-08-31 Lighting method for electronics parts assembly state testing KR920005935B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180002612U (en) * 2017-02-23 2018-08-31 엠투테크 주식회사 Stand type hair dryer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180002612U (en) * 2017-02-23 2018-08-31 엠투테크 주식회사 Stand type hair dryer

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