KR930010852B1

KR930010852B1 - Printed circuit board testing equipment

Info

Publication number: KR930010852B1
Application number: KR1019910017133A
Authority: KR
Inventors: 이상의; 변상두
Original assignee: 삼성전자 주식회사; 강진구
Priority date: 1991-09-30
Filing date: 1991-09-30
Publication date: 1993-11-12
Also published as: KR930007330A

Abstract

This system concerns automatic PCB inspection which uses a mechanical system. The system achieves factory automation using PCB transfer, examination survey, and the transfer of the examined PCB to the next process of work. This system comprises a PCB (1) detecting sensor (2A), a sensor (2A'), a PCB stopper (3), a drive motor that activates a transport belt (4), a loading center (A), a sensor (2B), a drive motor (5') that activates a transport belt (4'), a stopper (3'), a position fixing center (7), which is made of an up-down cylinder (7a) and a pin (7b), a Buzzer (8), a CRT (9), a Printer (10), a checking device (B), a cylinder (11)(11'), an unloading center (c) and a loading center (D).

Description

PCB inspection device

제1도는 본 발명에 따른 정면도.1 is a front view according to the present invention.

제2도는 본 발명에 따른 평면도.2 is a plan view according to the present invention.

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

1 : PCB 2A, 2A', 2B, 2C, 2C' : 센서1: PCB 2A, 2A ', 2B, 2C, 2C': Sensor

3, 3' : 스톱퍼 4, 4', 4＂ : 이송벨트3, 3 ': Stopper 4, 4', 4 ＂: Transfer belt

5, 5', 5＂ : 구동모터 6 : 측정치구5, 5 ', 5 ＂: Drive motor 6: Measuring fixture

7 : 위치고정장치 7a : 엎-다운 실린더7: Position fixing device 7a: Down-down cylinder

7b : 핀 8 : 부저7b: Pin 8: Buzzer

9 : CRT 10 : 프린터9: CRT 10: Printer

11, 11' : 실린더 A :로딩부11, 11 ': Cylinder A: loading part

B : 검사부 C : 언로딩부B: Inspection part C: Unloading part

D : 적재부D: loading part

본 발명은 소정부품이 삽입고정되어진 PCB를 검사 측정하여 그 상태에 따라 합격품(GOOD) 또는 불합격품(NO GOOD)으로 선별 처리하는 PCB 검사장치에 관한 것으로, 특히, PCB 검사를 기계적인 장치를 이용, 자동화하여 생산성 및 작업성을 향상시킬 수 있도록함을 목적으로 개발된 PCB 검사장치에 관한 것이다.The present invention relates to a PCB inspection apparatus for inspecting and measuring the PCB to which a predetermined part is inserted and fixed according to the state, the screening process as a GOOD or NO GOOD, in particular, the PCB inspection using a mechanical device, It relates to a PCB inspection device developed for the purpose of automation to improve productivity and workability.

일반적으로 PCB 검사에서는 납땜쇼트, 단선등을 검사하는 쇼트-오프검사, 부품을 측정하는 부품검사등을 실시하는바, 종래의 경우, PCB 검사는 작업자에 의해 일일히 PCB를 수작업으로 검사장치(TESTER)에 삽입후 측정스위치를 눌러, PCB를 측정케한 후 합격품 또는 불합격품 판정에 따라 PCB를 검사선별하여 합격품은 다음 공정에, 불합격품은 수리 또는 적재장치에 적재시키는 과정을 반복하는 것이므로, 생산성 품질저하는 물론 불필요한 인력 낭비등 공장자동화에 따른 작업공정의 흐름화를 저해하는 요인이 되는등 여러 결점이 있었다.In general, in the PCB inspection, a short-off inspection to check solder shorts, disconnection, etc., and a component inspection to measure parts are performed. In the conventional case, a PCB inspection is performed manually by an operator. ), Press the measurement switch, measure the PCB, inspect the PCB according to the acceptance or rejection test, and pass the rejection to the next process and rejection to the repair or loading device. Of course, there are many shortcomings, including unnecessary waste of manpower, which hinders the flow of work processes due to factory automation.

따라서 본 발명은 상기와 같은 종래의 결점을 해소시키기 위해서 PCB 검사측정 시스템에 있어서, 검사하고자 하는 PCB의 이송, 검사측정, 검사측정완료된 PCB의 다음 공정으로의 이송등을 기계적인 장치를 이용하여 자동화함으로서 생산성 및 작업성을 향상시킴과 공장자동화를 실현할 수 있도록 안출된 것으로 첨부된 도면에 의하여 그 구성과 작용효과를 상세히 설명하면 다음과 같다.Therefore, the present invention in the PCB inspection and measurement system to solve the above-mentioned drawbacks, automation of the transfer of the PCB to be inspected, inspection measurement, transfer to the next process of the inspection measurement completed using a mechanical device, etc. In order to improve productivity and workability and to realize factory automation, the configuration and operation effects will be described in detail with reference to the accompanying drawings.

이송수단(컨베어벨트)으로부터 이송되어온 PCB(1)를 감지하는 센서(2A), PCB(1)의 이송을 감지하여 다음에 설명되는 검사부(A)에 PCB가 있을 경우에는 대기케하고, 없을 경우에는 이송시키는 센서(2A'), PCB가 로딩부(A)에 위치하고 있을 때, ON되어 다음 PCB의 인입을 차단하는 스톱퍼(3), 상기 센서(2A)의 감지신호에 따라 구동 또는 구동정지되면서 이송벨트(4)를 작동시키는 구동모터(5)로 이루어지고, 이송되어온 PCB를 제어신호에 따라 대기 또는 이송하는 수단인 로딩부(A)와, PCB(1)가 로딩부(A)에서 검사부(B)로 인입되는 것을 감지하는 센서(2B), 상기 센서(2B)의 감지신호에 의해 구동 또는 구동정지되면서 이송벨트(4')을 작동시키는 구동모터(5'), 상기 센서(2B)에 의해 동작되어 PCB의 오버런을 차단하는 스톱퍼(3'), 인입되어진 PCB의 위치를 보정하여 측정치구(6)와 PCB(1)사이에 양호한 접촉상태를 유지토록 PCB를 눌러주는 엎-다운실린더(7a) 및 핀(7b)으로 조합된 위치고정장치(7), 검사측정결과를 시각 및 청각적으로 인지토록 하는 부저(8), CRT(9), 프린더(10)로 이루어져 PCB의 성능, 특성치등을 설정된 프로그램에 의해 검사하여 PCB가 합격품 또는 불합격품인가를 판단처리하는 검사부(B)와, 상기 검사부(B)로부터 인입되는 PCB를 감지하는 센서 (2C), 센서(2C)에 의해 구동되면서 이송벨트(4＂)의 작동을 제어하는 구동모터 (5＂), 검사완료된 PCB의 상태(합격품(GOOD), 불합격품(NO GOOD))에 따라 이들을 적재부(D) 또는 다음 공정으로 이송시키는 실린더(11)(11'), PCB(1)의 이송상태를 감지하는 센서(2C')로 이루어져 검사측정 완료된 PCB(1)를 다음 공정으로 이송시키는 언로딩부(C)와, 불합격품 PCB를 적재하는 랙(12)으로 이루어진 적재부(D)로 조합 구성인 것이다.Sensor (2A) for detecting PCB (1) transferred from the conveying means (conveyor belt), detects the transfer of the PCB (1) and waits if there is a PCB in the inspection unit (A) described next, if not When the sensor (2A ') to transfer, the PCB is located in the loading portion (A), it is turned on and the stopper (3) to block the entry of the next PCB, driving or driving stop in accordance with the detection signal of the sensor (2A) It consists of a driving motor (5) for operating the conveying belt (4), the loading unit (A) means for waiting or transferring the transferred PCB in accordance with the control signal, and the PCB (1) is the inspection unit in the loading unit (A) (B) a sensor (2B) for detecting the incoming, a drive motor (5 ') for operating the conveying belt (4') while being driven or stopped by the detection signal of the sensor (2B), the sensor (2B) Stopper (3 ') which is operated by to block overrun of the PCB, and corrects the position of the inserted PCB by measuring the measuring fixture (6) and PCB (1) Position fixing device (7) combined with a down-down cylinder (7a) and a pin (7b) to press the PCB to maintain good contact between the buzzer, buzzer (8) to visually and audibly recognize the test result. ), The CRT (9) and the printer (10), the inspection unit (B) for inspecting the PCB performance, characteristic values, etc. by a set program to determine whether the PCB is a pass or fail product, and the drawing unit from the inspection unit (B) Sensor (2C) to detect the PCB to be driven, drive motor (5 ＂) to control the operation of the transfer belt (4 구동) while being driven by the sensor (2C), the state of the completed PCB (GOOD, rejected (NO) GOD)) consists of a cylinder (11) (11 ') for transferring them to the loading part (D) or the next process, and a sensor (2C') for detecting the transfer state of the PCB (1) and completed the inspection measurement PCB (1) To a loading portion (D) consisting of an unloading portion (C) for transferring the material to the next process, and a rack (12) for loading the rejected PCB. It is composed of the sum.

미 설명부호 2B', 2B＂, 2D, 2D'는 센서인 것이다.Reference numerals 2B ', 2B', 2D, and 2D 'are sensors.

이와 같이 구성된 본 고안의 작용효과를 설명하면 다음과 같다.Referring to the effect of the present invention configured as described above are as follows.

전공정에서 소정의 부품들이 납땜에 의해 고정되어진 PCB(1)가 이송장치(컨베어벨트)에 이송되어 PCB검사장치의 로딩부(A)에 부착된 센서(2A) 위치에 도달됨과 동시에 센서(2A)가 이를 감지하여 감지신호를 제어수단에 송출함에 따라 제어수단에서는 상기의 감지신호 입력에 따른 제어신호를 출력하여 구동모터(5)를 구동시킨다. 이에따라 이송벨트(4)가 작동되면서 PCB(1)를 인입시키는데, 이때, 로딩부(A)의 센서 (2A')가 PCB(1)의 인입을 감지하여, 감지신호를 제어수단에 송출하면, 제어수단에서는 곧바로 검사부(B)에 PCB(1)가 ＂있는지＂＂없는지＂를 판단하여 PCB(1)가 있을 경우에는 대기상태로 되며, 이와 동시에 로딩부(A)의 스톱퍼(3)가 ON상태가 되어 다음 PCB가 로딩부(A)로 인입되는 것을 차단토록 한다.In the previous process, the PCB 1, in which predetermined parts are fixed by soldering, is transferred to a conveyer (conveyor belt) and reaches the position of the sensor 2A attached to the loading part A of the PCB inspection apparatus. ) Detects this and sends a detection signal to the control means, the control means outputs a control signal according to the detection signal input to drive the drive motor (5). Accordingly, the transfer belt 4 is operated to draw the PCB 1. At this time, when the sensor 2A 'of the loading unit A detects the entry of the PCB 1 and sends a detection signal to the control means, The control means immediately judges whether or not the PCB 1 is present in the inspection unit B, and if there is a PCB 1, it is in a standby state and at the same time the stopper 3 of the loading unit A is turned ON. In this state, the next PCB is blocked from entering the loading portion (A).

한편, 검사부(B)에 PCB(1)가 없을 경우에는 PCB는 이송벨트(4)에 의해 다음 공정인 검사부(B)로 이송되어진다. 또, 로딩부(A)에서 검사부(B)로 이동되는 PCB(1)가 검사부(B)의 입구측에 부설된 센서(2B)에 감지되면 검사부(B)의 구동모터(5')가 동작되어 이송벨트(4')를 구동시키며, 동시에 PCB 정위치 고정 스톱퍼(3')를 온 시킨다.On the other hand, when there is no PCB (1) in the inspection unit (B), the PCB is transferred to the inspection unit (B) which is the next process by the transfer belt (4). In addition, when the PCB 1 moved from the loading unit A to the inspection unit B is detected by the sensor 2B placed at the entrance side of the inspection unit B, the driving motor 5 'of the inspection unit B is operated. To drive the transfer belt 4 'and at the same time turn on the PCB fixed stopper 3'.

이때, PCB(1)가 로딩부(A)로부터 완전히 빠져나오면 로딩부(A)의 스톱퍼(3)는 OFF되어 다음 PCB가 인입될 수 있도록 한다.At this time, when the PCB 1 completely exits from the loading unit A, the stopper 3 of the loading unit A is turned off so that the next PCB can be drawn in.

상기와 같이 PCB 정위치 고정스톱퍼(3')가 온되면 검사부(B)의 이송벨트(4')가 작동되면서 PCB(1)를 스톱퍼(3')까지 이송시킨 후 정지된다. (PCB 정위치 완료상태) 계속해서 실제적인 PCB의 측정을 하기 위해서 위치고정장치(7)인 엎-다운 실린더(7a)가 하강하는데, 이와같은 엎-다운 실린더(7a)의 하강과정에서 중간위치 검출용센서(2B')까지는 빠른 속도로 센서(2B')에서 센서(2B＂)까지는 느린속도로 하강동작되어 PCB(1)를 압압하므로 검사부(B)의 측정치구(6)의 핀과 PCB(1)와의 접촉이 원활하게 이루어지도록 한다.As described above, when the PCB fixed position stopper 3 'is turned on, the transfer belt 4' of the inspection unit B is operated and the PCB 1 is stopped until the stopper 3 'is transferred. (PCB exact position completion state) In order to continue to measure the actual PCB, the position fixing device (7), the down-down cylinder (7a) is lowered, the intermediate position in the process of lowering the down-down cylinder (7a) The detection sensor 2B 'is operated at a high speed and descends from the sensor 2B' to the sensor 2B 'at a slow speed, so as to press the PCB 1 so that the pins of the measuring fixture 6 of the inspection unit B and the PCB are pressed. (1) Make sure that the contact is made smoothly.

상기의 동작완료후, 기설정된 프로그램에 의해 PCB에 고정된 각종 부품의 성능, 특성치등을 검사측정하여 PCB(1)가 합격품(GOOD)인가 불합격품(NO GOOD)인가를 판정선별한다.After the above operation is completed, the performance and characteristic values of the various components fixed to the PCB are inspected and measured by a predetermined program to determine whether the PCB 1 is a GOOD or NO GOOD.

검사부(B)의 PCB 검사동작완료후 엎-다운실린더(7a)가 상승동작 되어짐과 동시에 부저(8)가 울리면서 CRT(9)에 합격품 또는 불합격품인가를 알리는 영상이 나타나며, 또 불합격품인 경우에는 불량의 위치를 표시하고, 프린터(10)에서 에러메세지를 프린터한다.After completion of the PCB inspection operation of the inspection unit (B), the down-down cylinder (7a) is lifted up and at the same time the buzzer (8) rings to show the CRT (9) whether it is a pass or fail product. The location of the defect is displayed, and the printer 10 prints an error message.

한편, 상기의 검사부(B)에서 측정완료되고, 위치고정장치(7)의 엎-다운 실린더(7a)가 상승하여 위치고정장치의 역할이 해제 완료된 상태에서 언로딩부(C)에 측정완료된 PCB(1)가 있을 경우 및 언로딩부(C)가 현재 동작중일 경우에는 언로딩부(C)에서 PCB가 제거될 때까지 검사부(B)에 PCB(1)를 대기시키게 되며, 언로딩부(C)에서 PCB(1)가 완전 이탈되면, 구동모터(5＂)가 작동되면서 이송벨트(4＂)를 구동시켜주므로 PCB(1)가 언로딩부(C)로 이송되고, 로딩부(A)에는 또다른 PCB(1)가 전술되어진 방법으로 인입되어 검사측정을 수행하게 된다.On the other hand, the measurement is completed in the inspection unit (B), the PCB is measured in the unloading unit (C) in the state in which the position-down cylinder (7a) of the position fixing device 7 is raised to release the role of the position fixing device is completed. If there is (1) and the unloading unit (C) is currently in operation, the PCB (1) to the inspection unit (B) waits until the PCB is removed from the unloading unit (C), the unloading unit ( When the PCB 1 is completely separated from the C), the driving motor 5 ＂is operated to drive the transfer belt 4 (, so that the PCB 1 is transferred to the unloading part C, and the loading part A ) Another PCB 1 is drawn in the manner described above to perform inspection measurements.

한편, 검사부(B)에서 이송되는 PCB가 언로딩부(C) 입구측에 결착된 센서 8(2C)위치에 도달되면 센서 8(2C)가 이를 감지하여 감지신호를 송출하므로 제어수단을 언로딩부(C)의 구동모터(5＂)를 구동시켜 이송벨트(4＂)를 작동시키므로 PCB는 적재부(D)로 이송된다. 여기서, 검사부(B)에서 PCB를 측정한 결과가 합격품일 경우에는 PCB는 적재부(D)로 이송되는 과정에서 센서9(2C')에 PCB가 감지되면 PCB 이송실린더(11)가 동작하여 PCB를 적재부(D)까지 이송하며, 이송이 완료되면, 또다른 실린더(2단 실린더)가 동작하여 PCB(합격품)을 다음 공정으로 이송시킨 후 원위치로 복귀된다.On the other hand, when the PCB transferred from the inspection unit (B) reaches the position of the sensor 8 (2C) bound to the inlet side of the unloading unit (C), the sensor 8 (2C) detects this and sends a detection signal to unload the control means The PCB is transferred to the loading part (D) because the drive belt (4) is operated by driving the drive motor (5) of the portion (C). Here, if the result of measuring the PCB in the inspection unit (B) is the accepted product, when the PCB is detected by the sensor 9 (2C ') in the process of transferring the PCB to the loading unit (D), the PCB transfer cylinder 11 is operated to the PCB It transfers to the loading part D, and when the transfer is completed, another cylinder (two-stage cylinder) is operated to transfer the PCB (passed product) to the next process and then returned to the original position.

또, PCB의 측정결과가 불합격품일 경우에는 PCB는 적재부(D)로 이송되는 과정에서 센서 9(2C')에 PCB가 감지되면 PCB 이송실린더(11)가 동작하여 PCB를 적재부(D)로 이송하고, 이송완료되면 원위치로 복귀된다.In addition, when the PCB measurement result is a rejected product, when the PCB is detected by the sensor 9 (2C ') in the process of transferring the PCB to the loading part (D), the PCB transfer cylinder 11 operates to load the PCB (D). Transfer to the original position when transfer is completed.

한편, 상기와 같은 방법에 의해서 적재부(D)의 랙(RACK)에 PCB(불량품)가 일정 수량적재가 되면, 적재부의 랙(12)는 상사점 감지센서(2D)의 일정 수량적재가 감지신호에 의해 자동으로 하사점 감지센서(2B')위치까지 하향 이동되어 교체대기 한다. 적재부(D)의 랙(12) 교체완료 후 본 장치의 스타트스위치를 작동시키면 적재부(D)의 랙 (12)은 일정부위까지 상향 이동되어 다음 동작(상기된 동작)이 이루어지도록 한다. 이때, PCB는 언로딩부(C)에서 랙(12)이 교환될 때까지 대기상태를 유지하며, 교체완료 후 상기된 동작이 이루어진다.On the other hand, when the PCB (defective goods) is a certain quantity of loading on the rack (RACK) of the loading unit (D) by the same method as described above, the rack 12 of the loading unit detects the predetermined quantity loading of the top dead center detection sensor (2D). It automatically moves to the bottom dead center detection sensor (2B ') position by the signal and waits for replacement. When the start switch of the device is operated after the replacement of the rack 12 of the stacking unit D is completed, the rack 12 of the stacking unit D is moved upward to a predetermined portion so that the next operation (operation described above) is performed. At this time, the PCB maintains the standby state until the rack 12 is replaced in the unloading unit C, and the above-described operation is performed after the replacement is completed.

이상에서 본 바와같이 본 발명은 소정의 부품이 납땜에 의해 고정되어진 PCB가 자동으로 공급되면서 검사측정에 의해 선별되어지는 과정이 자동으로 이루어지므로 생산성 및 작업성을 향상시킬 수 있을 뿐만, 아니라, 공장자동화를 실현할 수 있는 등 여러 장점이 있다.As described above, the present invention is not only to improve productivity and workability, but also to automatically improve the productivity and workability, because the process is selected automatically by the inspection measurement while the PCB is fixed to the predetermined parts by soldering is automatically supplied. There are several advantages, such as being able to realize automation.

Claims

Sensor (2A) for detecting PCB (1) transferred from the conveying means (conveyor belt), detects the transfer of the PCB (1) and waits if there is a PCB in the inspection unit (A) described next, if not When the sensor (2A ') to transfer, when the PCB is located in the loading portion (A), it is turned on, the stopper (3) to block the entry of the next PCB, driving or driving stop in accordance with the detection signal of the sensor (2A) It consists of a driving motor (5) for operating the conveying belt (4), the loading unit (A) means for waiting or transferring the transferred PCB in accordance with the control signal, and the PCB (1) is the inspection unit in the loading unit (A) (B) a sensor (2B) for detecting the incoming, a drive motor (5 ') for operating the transfer belt (4') while being driven or stopped by the detection signal of the sensor (2B), the sensor (2B) Stopper (3 ') which is operated by to block overrun of PCB, and corrects the position of incoming PCB by measuring fixture (6) and PCB (1) Position fixing device (7) combined with a down-down cylinder (7a) and a pin (7b) to press the PCB to maintain good contact between them; buzzer for visually and audibly recognizing test results (8) an inspection unit (B) consisting of a CRT (9) and a printer (10), which inspects the performance, characteristic values, and the like of the PCB by a set program to determine whether the PCB is a pass or fail product, and from the inspection unit (B). Sensor (2C) to detect incoming PCB, drive motor (5 ＂) to control the operation of the transfer belt (4 되면서) while being driven by the sensor (2C), status of the completed PCB (GOOD, rejected) NO GOOD)) consists of a cylinder (11) (11 ') for transporting them to the loading part (D) or the next process, and a sensor (2C') for detecting the transfer state of the PCB (1). ) A loading part (D) consisting of an unloading part (C) for transferring to the next process, and a rack (12) for loading rejected PCBs. PCB inspection apparatus characterized by a combination composed.