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JP4338050B2 - Printed circuit board inspection equipment - Google Patents
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JP4338050B2 - Printed circuit board inspection equipment - Google Patents

Printed circuit board inspection equipment Download PDF

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JP4338050B2
JP4338050B2 JP2007304016A JP2007304016A JP4338050B2 JP 4338050 B2 JP4338050 B2 JP 4338050B2 JP 2007304016 A JP2007304016 A JP 2007304016A JP 2007304016 A JP2007304016 A JP 2007304016A JP 4338050 B2 JP4338050 B2 JP 4338050B2
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circuit board
printed circuit
connection switching
movable
switching signal
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JP2008111844A5 (en
JP2008111844A (en
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保徳 溝口
徹 石井
憲吾 土田
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Yamaha Fine Technologies Co Ltd
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Yamaha Fine Technologies Co Ltd
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Description

本発明は、プリント基板の接点に接触端子を接触させることによりプリント基板の電気検査を行うプリント基板の検査装置に関する。   The present invention relates to a printed circuit board inspection apparatus that performs electrical inspection of a printed circuit board by bringing a contact terminal into contact with the contact of the printed circuit board.

従来から、電極パターンを有するプリント基板の回線を電気導通の有無により検査することが行われており、この場合、プリント基板に設けた接点に検査装置の接触端子を接触させて検査を行っている(例えば、特許文献1)。このような検査装置では、多数の接触端子が移動可能な可動部に取り付けられており、その各接触端子に配線が接続されている。そして、配線の他端は固定部に設けられ接触端子から送られる検出信号を計測する計測部に接続されている。   Conventionally, a circuit of a printed circuit board having an electrode pattern has been inspected based on the presence or absence of electrical continuity. In this case, the inspection is performed by bringing a contact terminal of an inspection device into contact with a contact provided on the printed circuit board. (For example, patent document 1). In such an inspection apparatus, a large number of contact terminals are attached to a movable part, and wiring is connected to each contact terminal. The other end of the wiring is connected to a measurement unit that measures the detection signal that is provided in the fixed portion and is sent from the contact terminal.

また、プリント基板は、検査用表面に複数の接点が設けられた絶縁性フィルムに電極パターンを積層し、接点と電極パターンを導通させて構成され、電極パターンには塑性変形が可能な銅等の材料が用いられている。そして、導通検査の際には、平面状に形成された検査治具の上面にプリント基板を固定し、可動部をプリント基板の上方から下降させて接触端子をプリント基板の接点に接触させることが行われる。また、プリント基板は複数の電極パターンが形成されたシート状に形成され、接触端子は、可動部に設けられたプローブヘッドに固定されている。   Also, the printed circuit board is configured by laminating an electrode pattern on an insulating film having a plurality of contacts provided on the surface for inspection and conducting the contacts and the electrode pattern. The electrode pattern is made of copper or the like that can be plastically deformed. Material is used. When conducting a continuity test, the printed circuit board is fixed to the upper surface of the inspection jig formed in a planar shape, and the movable part is lowered from above the printed circuit board to bring the contact terminal into contact with the contact of the printed circuit board. Done. The printed circuit board is formed in a sheet shape on which a plurality of electrode patterns are formed, and the contact terminals are fixed to a probe head provided on the movable portion.

特開平11−340588号公報JP 11-340588 A

前記検査装置においては、基板全面に当接するプローブヘッドを作成すると多大なコストがかかる。このため、複数の電極パターンが形成されたプリント基板の検査を行う場合、一つの電極パターンに対応した検査用プローブヘッドを用いて、一つ一つの電極パターンを順番に検査する(ステップアンドリピート)方法が行われている。しかしながら、この方法においても、接触端子と同数の配線が、固定部に設けられた計測部に接続されているため、配線の数が多くなって嵩張ってしまうという問題が生じていた。   In the inspection apparatus, it is very expensive to produce a probe head that abuts on the entire surface of the substrate. For this reason, when inspecting a printed circuit board on which a plurality of electrode patterns are formed, each electrode pattern is inspected in turn using a probe head for inspection corresponding to each electrode pattern (step and repeat). The way is done. However, even in this method, since the same number of wires as the contact terminals are connected to the measurement unit provided in the fixed part, there has been a problem that the number of wires increases and becomes bulky.

本発明は、上記した問題に対処するためになされたもので、その目的は、固定部と可動部との間を接続する配線の数を少なくすることにより、配線が嵩張ることがなく可動部の移動距離や移動速度の自由度を高めたプリント基板の検査装置を提供することである。   The present invention has been made in order to cope with the above-described problems, and an object of the present invention is to reduce the number of wirings connecting between the fixed part and the movable part, thereby preventing the wiring from becoming bulky. An object of the present invention is to provide an inspection apparatus for a printed circuit board with a high degree of freedom in moving distance and moving speed.

上記の目的を達成するため、本発明に係るプリント基板の検査装置の構成上の特徴は、検査装置を制御するための制御装置を有する固定部と、設置装置に設置されたプリント基板の表面に沿って互いに直行するX方向及びY方向の2方向に移動する可動部とを備えプリント基板の電気検査を行うプリント基板の検査装置であって、前記可動部は、接触端子支持部に取り付けられ、プリント基板の複数の接点にそれぞれ接触する複数の接触端子と、複数の接触端子にそれぞれ接続された複数の第1配線と、供給される接続切換信号により前記複数の第1配線の中から任意の配線を選択し接続を切り換える接続切換装置と、接続切換装置への接続切換信号を受信する接続切換信号受信装置を含む可動部側入出力部とを備え、固定部は、接続切換装置への接続切換信号を送信する接続切換信号送信装置を含む固定部側入出力部を備え、可動部側入出力部と固定部側入出力部とを接続し、接続切換信号受信装置を介して接続切換装置に接続切換信号を送信する第2配線と、可動部側入出力部と固定部側入出力部とを接続し接続切換装置により複数の第1配線の中から選択され接続を切られた前記任意の配線を固定部側入出力部に接続する複数の第1配線よりも少数の第3配線とを備えたことにある。
この場合、可動部は、さらに、前記X方向とY方向とに直交するZ方向および前記Z方向に沿った軸線周りに移動するようにするとよい。そして、可動部は、制御装置により制御されて移動する。また、可動部を、前記プリント基板の下方と上方にそれぞれ設けるとよい。
In order to achieve the above object, the structural features of the printed circuit board inspection apparatus according to the present invention include a fixing unit having a control device for controlling the inspection apparatus, and a surface of the printed circuit board installed in the installation apparatus. along a movable portion that moves in two directions of X and Y directions orthogonal to each other, an inspection apparatus of a printed circuit board for electrically testing printed circuit board, wherein the movable part is attached to the contact terminal supporting portion A plurality of contact terminals that respectively contact the plurality of contacts of the printed circuit board, a plurality of first wirings respectively connected to the plurality of contact terminals, and an arbitrary one of the plurality of first wirings by a connection switching signal supplied comprising a connection switching unit that selects a line switching connections, and a movable side output section including a connection switching signal receiving apparatus for receiving a connection switching signal to the connection switching device, the fixing unit, connection switching With fixed side output section including a connection transmission switching signal device transmitting a connection switching signal to the location, connecting the fixing portion side input-output unit movable side input-output unit, via the connection switching signal receiving apparatus The second wiring for transmitting a connection switching signal to the connection switching device is connected to the movable portion side input / output portion and the fixed portion side input / output portion, and the connection switching device selects and connects the plurality of first wirings. the arbitrary wiring which is e switching Operation changeover connected to the fixed portion side input-output unit, in that a small number of the third wiring than the plurality of first wirings.
In this case, the movable portion may be further moved around the Z direction orthogonal to the X direction and the Y direction and an axis along the Z direction. And a movable part is controlled by a control apparatus and moves. Moreover, it is good to provide a movable part in the downward direction and the upper direction of the said printed circuit board, respectively.

前記のように構成した本発明によれば、可動部に、複数の接触端子に接続された複数の第1配線を接続切する接続切換装置を設けている。したがって、固定部と可動部との間には接続切換信号を送信する第2配線と、接続切された第1配線を固定部に接続する第3配線を設けるだけで、複数の接触端子に測定信号を送ることができる。この結果、従来検査装置のように、嵩張った多数の配線を可動部が引きずり回しながら導通検査を行うといったことがなくなる。また、接触端子に接続された複数の第1配線の他端は、接触端子と同じく可動部に取り付けられた接続切換装置に接続される。このため、この数の多い第1配線は短いものですむため経済的効果も生じる。 According to the present invention configured as described above, the movable portion is provided with a connection switching device for example connected Switching Operation changeover a plurality of first wiring connected to a plurality of contact terminals. Thus, only between the fixed part and the movable part providing the third wirings connecting the second wiring for transmitting the connection switching signal, the first wiring which is e connected Switching Operation changeover to the fixed part, a plurality of contact A measurement signal can be sent to the terminal. As a result, the continuity test is not performed while the movable part drags a large number of bulky wires as in the conventional inspection apparatus. Further, the other ends of the plurality of first wires connected to the contact terminal are connected to a connection switching device attached to the movable part in the same manner as the contact terminal. For this reason, since the large number of first wirings are short, an economic effect is also produced.

以下、本発明の一実施形態を図面を用いて説明する。図1は同実施形態に係るプリント基板の検査装置10の要部を示した概略構成図である。この検査装置10は、図2に示した検査対象物であるプリント基板11に設けられた電極パターン(図示せず)が適正に導通または絶縁しているかどうかを検査するための装置である。検査装置10は、プリント基板11を設置する設置装置と、移動装置に取り付けられ移動装置の駆動によってプリント基板11の表面に沿って移動する可動部20と、検査装置10が備える各装置を制御するための後述する制御装置32を含む固定部30とで構成されている。また、プリント基板11の表面には、電極パターンとその電極パターンに導通する接点12が設けられている。   Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic configuration diagram showing a main part of a printed circuit board inspection apparatus 10 according to the embodiment. This inspection apparatus 10 is an apparatus for inspecting whether or not an electrode pattern (not shown) provided on the printed circuit board 11 which is the inspection object shown in FIG. 2 is properly conducted or insulated. The inspection apparatus 10 controls an installation apparatus that installs the printed circuit board 11, a movable unit 20 that is attached to the moving apparatus and moves along the surface of the printed circuit board 11 by driving the moving apparatus, and each apparatus included in the inspection apparatus 10. And a fixing unit 30 including a control device 32 to be described later. Further, on the surface of the printed board 11, an electrode pattern and a contact 12 that conducts to the electrode pattern are provided.

可動部20は、図3および図4に示した検査装置本体40に設けられており、X方向(プリント基板11の上面における左右方向)、X方向とプリント基板11の上面で直交するY方向、X方向とY方向とに直交するZ方向およびZ方向に沿った軸の軸周りのθ方向に移動可能になっている。検査装置本体40は、プリント基板11を所定位置に設置するための設置装置50を備えており、この設置装置50に設置されるプリント基板11の設置位置の下方と上方にそれぞれ可動部20が設置されている。   The movable unit 20 is provided in the inspection apparatus main body 40 shown in FIGS. 3 and 4, and the X direction (left and right direction on the upper surface of the printed circuit board 11), the Y direction orthogonal to the X direction and the upper surface of the printed circuit board 11, It is movable in the Z direction orthogonal to the X direction and the Y direction and in the θ direction around the axis along the Z direction. The inspection apparatus main body 40 includes an installation device 50 for installing the printed circuit board 11 at a predetermined position, and the movable portions 20 are installed below and above the installation position of the printed circuit board 11 installed in the installation device 50. Has been.

そして、設置装置50および可動部20は、後述する各移動装置等によって移動可能になった状態で基台42に設置されている。基台42は、上面に窓状の穴部43が設けられた枠状の台で構成されており、上面における穴部43の左右両側部分に設置装置50を構成する一対の支持装置50a,50bがそれぞれ設けられている。   And the installation apparatus 50 and the movable part 20 are installed in the base 42 in the state which became movable with each moving apparatus etc. which are mentioned later. The base 42 is constituted by a frame-like table having a window-shaped hole 43 provided on the upper surface, and a pair of support devices 50a and 50b constituting the installation device 50 on the left and right sides of the hole 43 on the upper surface. Are provided.

支持装置50aは、穴部43の一方の縁部に沿って設けられたレール部51aと、レール部51aに沿って移動可能な一対の支持部52a,56aからなっている。そして、支持部52aは、プリント基板11に対して近接離間方向に延びる軌道部と、例えば、エアシリンダからなる駆動部で構成される移動装置53aと、移動装置53aの駆動部の駆動によって前記軌道部に沿って移動可能な移動部54aとからなっている。また、移動部54aの先端部はプリント基板11の角部を挟んで固定するための挟持部55aが形成されている。   The support device 50a includes a rail part 51a provided along one edge of the hole 43 and a pair of support parts 52a and 56a movable along the rail part 51a. And the support part 52a is the said track | orbit by the drive of the track part extended in the approach / separation direction with respect to the printed circuit board 11, the drive part which consists of an air cylinder, for example, and the drive part of the move apparatus 53a. The moving part 54a is movable along the part. In addition, a pinching portion 55a for fixing the tip portion of the moving portion 54a with the corner portion of the printed circuit board 11 interposed therebetween is formed.

支持部56aは、支持部52aと前後方向を対称にした構成からなり、移動装置57aと移動部58aとからなっており、移動部58aの先端部は挟持部59aに形成されている。支持部52a,56aは、レール部51aに沿って互いの間隔を広げたり狭めたりするように移動でき、プリント基板11の幅に応じてその間隔を調整する。また、支持装置50aは、レール部71a,72aに沿って移動可能に設けられており、プリント基板11の長さに応じてその位置を決める。   The support portion 56a has a configuration in which the support portion 52a is symmetric with respect to the front-rear direction. The support portion 56a includes a moving device 57a and a moving portion 58a, and the distal end portion of the moving portion 58a is formed in the holding portion 59a. The support parts 52a and 56a can move along the rail part 51a so as to widen or narrow each other, and adjust the distance according to the width of the printed circuit board 11. The support device 50 a is provided so as to be movable along the rail portions 71 a and 72 a, and determines its position according to the length of the printed circuit board 11.

支持装置50bは、支持装置50aと左右対称で同一の構成からなっており、レール部51bと、一対の支持部52b,56bとからなっている。そして、支持部52bは、移動装置53bと移動部54bとからなり、移動部54bの先端部には挟持部55bが形成されている。また、支持部56bも、移動装置57bと移動部58bとからなっており、移動部58bの先端部は挟持部59bに形成されている。   The support device 50b is symmetrical and has the same configuration as the support device 50a, and includes a rail portion 51b and a pair of support portions 52b and 56b. And the support part 52b consists of the moving apparatus 53b and the moving part 54b, and the clamping part 55b is formed in the front-end | tip part of the moving part 54b. Further, the support portion 56b also includes a moving device 57b and a moving portion 58b, and the distal end portion of the moving portion 58b is formed in the holding portion 59b.

支持部52b,56bは、レール部51bに沿って移動でき、プリント基板11の幅に応じてその間隔を調整する。また、支持装置50bは、レール部71b,72bに沿って移動可能に設けられており、プリント基板11の長さに応じてその位置を決める。また、支持装置50aの移動部54a,58aと、支持装置50bの移動部54b,58bは、それぞれ移動装置部53a,57a,53b,57bの軌道部に沿って移動できる。したがって、移動部54a,58a,54b,58bは、先端の挟持部55a,59a,55b,59bでプリント基板11の各角部を挟持して移動することによって、プリント基板11をテンションをかけて支持する。   The support parts 52b and 56b can move along the rail part 51b, and adjust the space | interval according to the width | variety of the printed circuit board 11. FIG. The support device 50b is provided so as to be movable along the rail portions 71b and 72b, and determines its position according to the length of the printed circuit board 11. Moreover, the moving parts 54a and 58a of the support device 50a and the moving parts 54b and 58b of the support device 50b can move along the track portions of the moving device parts 53a, 57a, 53b and 57b, respectively. Therefore, the moving parts 54a, 58a, 54b, 58b support the printed circuit board 11 with tension by moving the respective corner parts of the printed circuit board 11 with the holding parts 55a, 59a, 55b, 59b at the leading ends. To do.

プリント基板11が設置される位置の上方に設けられる可動部20は、基台42の上面の前後に設けられた一対のレール部44a,44bの上面部に沿って移動可能な支持台45に取り付けられている。この支持台45は、回転駆動装置46aの駆動によりレール部44a,44bに沿って左右に移動できる。また、支持台45には軌道部と回転軸部とで構成された移動装置47が取り付けられている。   The movable portion 20 provided above the position where the printed circuit board 11 is installed is attached to a support base 45 that is movable along the upper surface portions of the pair of rail portions 44a and 44b provided before and after the upper surface of the base 42. It has been. The support base 45 can be moved to the left and right along the rail portions 44a and 44b by the drive of the rotary drive device 46a. Further, a moving device 47 composed of a track portion and a rotating shaft portion is attached to the support base 45.

可動部20は、移動装置47に移動可能に取り付けられた移動部61に取り付けられており、移動部61とともに、移動装置47の駆動により移動装置47の長手方向に沿って移動可能になっている。可動部20は、移動部61が備える駆動装置(図示せず)の駆動により上下方向に移動するとともに、垂直軸を中心に回転する。   The movable portion 20 is attached to a moving portion 61 that is movably attached to the moving device 47, and is movable along the longitudinal direction of the moving device 47 together with the moving portion 61 by driving the moving device 47. . The movable unit 20 moves up and down by driving of a driving device (not shown) included in the moving unit 61 and rotates around a vertical axis.

プリント基板11が設置される位置の下方に設けられる可動部20は、前述した支持台45や移動装置47等と上下対称に設けられた支持台48や移動装置49等によって、上下方向に移動するとともに、垂直軸を中心に回転する。   The movable part 20 provided below the position where the printed circuit board 11 is installed is moved in the vertical direction by the support base 48 and the movement device 49 provided symmetrically with the support base 45 and the movement device 47 described above. At the same time, it rotates around the vertical axis.

そして、可動部20には、図1に示すように(図1には可動部20は1個だけ図示している。)、複数の接触端子21が取り付けられた接触端子支持部22が複数設けられており、さらに各接触端子支持部22が接続された複数(図1では2個)の接続切換装置23と、固定部30との間で信号データの送受信を行う入出力部24とが含まれている。また、各接触端子21は、同数からなる配線25によってそれぞれが接続切換装置23に接続されている。   As shown in FIG. 1 (only one movable part 20 is shown in FIG. 1), the movable part 20 is provided with a plurality of contact terminal support parts 22 to which a plurality of contact terminals 21 are attached. In addition, a plurality (two in FIG. 1) of connection switching devices 23 to which the respective contact terminal support portions 22 are connected, and an input / output portion 24 for transmitting / receiving signal data to / from the fixed portion 30 are included. It is. Each contact terminal 21 is connected to the connection switching device 23 by the same number of wires 25.

接触端子21は、細い針状に形成されており可動部20の移動によって、プリント基板11の接点12と接触する。このときに各接触端子21間が通電され、その電気抵抗値の大小によってプリント基板11の電極パターンが適正に導通しているか否かを判定する。これは、良品のプリント基板11の電気抵抗値をもとに検査判定値を設定し、その検査判定値に対する比率で判定される。すなわち、導通検査の場合は、検出した電気抵抗値が検査判定値に対して所定比率以下であれば、良品と判定し、所定比率以上であれば不良品と判定する。また、絶縁検査の場合であれば、検出した電気抵抗値が検査判定値に対して所定比率以上であれば、良品と判定し、所定比率以下であれば不良品と判定する。   The contact terminal 21 is formed in a thin needle shape, and comes into contact with the contact 12 of the printed circuit board 11 by the movement of the movable portion 20. At this time, the contact terminals 21 are energized, and it is determined whether or not the electrode pattern of the printed circuit board 11 is properly conducted depending on the magnitude of the electrical resistance value. This is determined by setting an inspection determination value based on the electrical resistance value of the non-defective printed circuit board 11 and a ratio to the inspection determination value. That is, in the case of continuity inspection, if the detected electrical resistance value is equal to or less than a predetermined ratio with respect to the inspection determination value, it is determined as a non-defective product, and if it is equal to or greater than the predetermined ratio, it is determined as a defective product. In the case of an insulation inspection, if the detected electrical resistance value is equal to or greater than a predetermined ratio with respect to the inspection determination value, it is determined as a non-defective product, and if it is equal to or less than the predetermined ratio, it is determined as a defective product.

接続切換装置23は、接触端子支持部22および各接触端子21の作動・停止の状態を切り換えるための回路を備えており、制御装置32から送られる切換指令信号に応じて内部に設けられたスイッチでその切り換えを行う。また、接続切換装置23には、各接触端子21に接続された接触端子21と同数の配線25が接続されており、各配線25を介して各接触端子21から検査信号が送られる。   The connection switching device 23 is provided with a circuit for switching the operation / stop state of the contact terminal support portion 22 and each contact terminal 21, and a switch provided inside in response to a switching command signal sent from the control device 32. Use to switch. Further, the same number of wires 25 as the contact terminals 21 connected to the contact terminals 21 are connected to the connection switching device 23, and an inspection signal is sent from each contact terminal 21 via each wire 25.

この接続切換装置23には、それぞれ複数(図1では2個)の接触端子支持部22から延びた配線25の束の端部が接続されている。また、各接続切換装置23は、所定部分に設けられた接続端子23aを互いに接続することによって連結されており、所定の接続切換装置23は接続端子23aを接続端子24aに接続させることにより入出力部24に連結されている。   The connection switching device 23 is connected to the ends of a bundle of wires 25 extending from a plurality (two in FIG. 1) of contact terminal support portions 22. In addition, each connection switching device 23 is connected by connecting connection terminals 23a provided at predetermined portions to each other, and the predetermined connection switching device 23 inputs and outputs by connecting the connection terminals 23a to the connection terminals 24a. It is connected to the part 24.

入出力部24は、接続切換信号を受信して接続切換装置23の切換指令信号に変換する接続切換信号受信装置27を備えている。また、この入出力部24には、後述する入出力部31からの検査信号を入力するとともに、接触端子21を介してプリント基板11を通ったのちに戻ってくる検査信号を入出力部31に出力するための入出力ポート28と、入出力部31から送信される接続切換信号を受信するための入力ポート29とが設けられている。そして、入出力ポート28には配線20a,20bが接続され、入力ポート29には配線30aが接続されている。配線20a,20b,30aは、ともに配線25よりもはるかに少ない数で構成されている。   The input / output unit 24 includes a connection switching signal receiving device 27 that receives a connection switching signal and converts it into a switching command signal for the connection switching device 23. The input / output unit 24 is supplied with an inspection signal from an input / output unit 31 (to be described later), and an inspection signal returned to the input / output unit 31 after passing through the printed circuit board 11 via the contact terminal 21. An input / output port 28 for outputting and an input port 29 for receiving a connection switching signal transmitted from the input / output unit 31 are provided. The input / output port 28 is connected to wirings 20a and 20b, and the input port 29 is connected to wiring 30a. The wirings 20a, 20b, and 30a are all configured with a much smaller number than the wiring 25.

固定部30は、検査装置本体40の近傍に設置された制御盤(図示せず)内に設けられており、可動部20の入出力部24との間で接続切換信号の送信を行うとともに検査信号を送受信する入出力部31と、制御装置32とを備えている。   The fixed unit 30 is provided in a control panel (not shown) installed in the vicinity of the inspection apparatus main body 40, and transmits a connection switching signal to and from the input / output unit 24 of the movable unit 20 and inspects. An input / output unit 31 for transmitting and receiving signals and a control device 32 are provided.

入出力部31には、配線20a,20bの端部が接続されて可動部20への検査信号を出力するとともに、接触端子21を介してプリント基板11を通ったのちに戻ってくる検査信号を入力するための入出力ポート33と、配線30aの端部に接続されて制御装置32から送られてくる切換指令信号を可動部20に送信する出力ポート34とが設けられている。また、入出力部31には、可動部20から送られてくる検査信号を計測する回路からなる計測部35と、接続切換信号受信装置27に接続切換信号を送信する接続切換信号送信装置36も設けられている。   The input / output unit 31 is connected to the ends of the wirings 20a and 20b to output an inspection signal to the movable unit 20, and an inspection signal that returns after passing through the printed circuit board 11 through the contact terminal 21. An input / output port 33 for inputting and an output port 34 connected to the end of the wiring 30a and transmitting a switching command signal sent from the control device 32 to the movable unit 20 are provided. In addition, the input / output unit 31 includes a measuring unit 35 including a circuit for measuring an inspection signal transmitted from the movable unit 20, and a connection switching signal transmitting device 36 that transmits a connection switching signal to the connection switching signal receiving device 27. Is provided.

制御装置32は、CPU37,ROM38およびRAM39を備えている。ROM38には、設置装置や移動装置を作動させるためのプログラムや、接続切換装置23に接触端子21を切り換えさせるためのタイミングのプログラム等の各種のプログラムが記憶されている。また、RAM39には、前述した検出信号等、導通検査を行うために必要な各種のデータが書き換え可能に記憶されている。CPU37は、ROM38およびRAM39が記憶する各種のプログラムやデータに基づいて、検査装置10を制御するとともに、計測部35が計測した計測結果から検査結果の判定を行う。   The control device 32 includes a CPU 37, a ROM 38 and a RAM 39. The ROM 38 stores various programs such as a program for operating the installation device and the moving device, and a timing program for causing the connection switching device 23 to switch the contact terminal 21. The RAM 39 stores various data necessary for conducting a continuity test, such as the detection signal described above, in a rewritable manner. The CPU 37 controls the inspection apparatus 10 based on various programs and data stored in the ROM 38 and the RAM 39, and determines the inspection result from the measurement result measured by the measurement unit 35.

また、制御装置32は、配線(図示せず)を介して、回転駆動装置46aおよび移動装置47にも接続されておりこれらの駆動制御も行う。また、この検査装置10は、操作者が各操作を行うための操作パネルや、検査結果を表示するための表示パネルも備えている。また、配線30aとしては、デジタルバスやデジタルシリアル通信機能を備えたケーブルを用いる。 Further, the control device 32 via a wiring (not shown) also performs these drive control is also connected to a rotary drive device 46a and the mobile equipment 4 7. The inspection apparatus 10 also includes an operation panel for an operator to perform each operation and a display panel for displaying inspection results. Further, as the wiring 30a, a cable having a digital bus or a digital serial communication function is used.

この構成において、検査装置10を用いてプリント基板11の導通検査を行う場合には、まず、プリント基板11を、設置装置50に設置する。ついで、回転駆動装置46a等を駆動させることにより接触端子支持部22をプリント基板11における所定の接点12の上方に移動させる。つぎに、接触端子支持部22を下降させて、接触端子21と接点12とを接触させる。この状態でプリント基板11の電極パターンの電気検査が行われる。詳細は後述する。   In this configuration, when the continuity test of the printed circuit board 11 is performed using the inspection device 10, the printed circuit board 11 is first installed on the installation device 50. Subsequently, the contact terminal support portion 22 is moved above the predetermined contact 12 on the printed circuit board 11 by driving the rotation driving device 46a and the like. Next, the contact terminal support 22 is lowered to bring the contact terminal 21 and the contact 12 into contact with each other. In this state, an electrical inspection of the electrode pattern of the printed circuit board 11 is performed. Details will be described later.

この場合、各移動装置は、CPU37から送信される指令信号に応じて移動するとともに、接触端子支持部22は、CPU37から送信される切換指令信号に応じた接続切換装置23の切り換えによって指定されたものが作動する。CPU37から送信された指令信号は、デジタル信号として入出力部31および配線30aを介して入出力部24に送られる。   In this case, each moving device moves according to a command signal transmitted from the CPU 37, and the contact terminal support portion 22 is designated by switching of the connection switching device 23 according to the switching command signal transmitted from the CPU 37. Things work. The command signal transmitted from the CPU 37 is sent as a digital signal to the input / output unit 24 via the input / output unit 31 and the wiring 30a.

この状態で、入出力部31から送られる接続切換信号を入出力部24が受信し、これに基づき、接続切換装置23が配線25との接続を切り換えて所定の接触端子21を接続状態にする。この後、入出力部31から検査信号を配線20b、入出力部24および接続切換装置23を介してプリント基板11に入力する。この入力された検査信号を、他の接続状態にある接触端子21から取り出し接続切換装置23、入出力部24および配線20aを介して入出力部31に入力し、これに基づいて計測部35が計測を行う。   In this state, the connection switching signal sent from the input / output unit 31 is received by the input / output unit 24, and based on this, the connection switching device 23 switches the connection with the wiring 25 to bring the predetermined contact terminal 21 into the connection state. . Thereafter, an inspection signal is input from the input / output unit 31 to the printed circuit board 11 through the wiring 20 b, the input / output unit 24, and the connection switching device 23. The input inspection signal is taken out from the contact terminal 21 in another connection state and is input to the input / output unit 31 via the connection switching device 23, the input / output unit 24 and the wiring 20a. Measure.

また、プリント基板11におけるつぎの検査部分の電気検査を行う場合には、再度各移動装置を駆動させることにより、接触端子支持部22を上昇させるとともに、つぎの検査位置に移動させる。そして、接触端子支持部22を下降させてその部分の電気検査を行う。そして、前述した操作を順次繰り返していくことにより、プリント基板11における全ての部分の検査を行う。   Further, when an electrical inspection of the next inspection portion on the printed board 11 is performed, the contact terminal support portion 22 is raised and moved to the next inspection position by driving each moving device again. And the contact terminal support part 22 is lowered | hung and the electrical test of the part is performed. Then, all the portions in the printed circuit board 11 are inspected by sequentially repeating the operations described above.

このように、本発明の検査装置10は、接続切換装置23を設けて、固定部30側から送られる接続切換信号によって、電気検査を行う接触端子21と配線25の接続状態を切り換えるようにしている。そして、計測部35は、入出力部24側から送られる検査信号を順次受け取るようにしている。したがって、可動部20と固定部30とを接続する配線20a,20b,30aを極めて少数にすることができる。また、可動部20の移動量、移動速度の自由度を高め、検査自由度を向上させ、検査時間の短縮ができる。   As described above, the inspection device 10 of the present invention is provided with the connection switching device 23 so as to switch the connection state between the contact terminal 21 for performing the electrical inspection and the wiring 25 by the connection switching signal sent from the fixed portion 30 side. Yes. The measuring unit 35 sequentially receives inspection signals sent from the input / output unit 24 side. Therefore, the number of wirings 20a, 20b, 30a connecting the movable part 20 and the fixed part 30 can be made very small. Moreover, the freedom degree of the moving amount and moving speed of the movable part 20 can be increased, the inspection freedom degree can be improved, and the inspection time can be shortened.

なお、本実施形態では、接続切換信号を、時分割多重処理して送出するようにしているが、接続切換信号を少ない配線中で、使用する周波数帯域を異ならせて同時に多重化するようにしてもよい。   In this embodiment, the connection switching signal is time-division multiplexed and transmitted. However, the connection switching signal is multiplexed at the same time by using different frequency bands in less wiring. Also good.

本発明の一実施形態による検査装置の要部を示した概略構成図である。It is the schematic block diagram which showed the principal part of the inspection apparatus by one Embodiment of this invention. プリント基板の導通検査を行う状態を示す正面図である。It is a front view which shows the state which performs the conduction test of a printed circuit board. 検査装置本体を示す平面図である。It is a top view which shows an inspection apparatus main body. 検査装置本体を示す正面図である。It is a front view which shows an inspection apparatus main body.

符号の説明Explanation of symbols

10…検査装置、11…プリント基板、12…接点、20…可動部、21…接触端子、22…接触端子支持部、23…接続切換装置、24,31…入出力部、20a,20b,25,30a…配線、27…接続切換信号受信装置、30…固定部、33…制御装置、35…計測部、36…接続切換信号送信装置、37…CPU、38…ROM、39…ROM。   DESCRIPTION OF SYMBOLS 10 ... Inspection apparatus, 11 ... Printed circuit board, 12 ... Contact, 20 ... Movable part, 21 ... Contact terminal, 22 ... Contact terminal support part, 23 ... Connection switching device, 24, 31 ... Input / output part, 20a, 20b, 25 , 30a ... wiring, 27 ... connection switching signal receiving device, 30 ... fixed unit, 33 ... control device, 35 ... measuring unit, 36 ... connection switching signal transmitting device, 37 ... CPU, 38 ... ROM, 39 ... ROM.

Claims (4)

検査装置を制御するための制御装置を有する固定部と、設置装置に設置されたプリント基板の表面に沿って互いに直行するX方向及びY方向の2方向に移動する可動部とを備え、前記プリント基板の電気検査を行うプリント基板の検査装置であって、
前記可動部は、
接触端子支持部に取り付けられ、プリント基板の複数の接点にそれぞれ接触する複数の接触端子と、
前記複数の接触端子にそれぞれ接続された複数の第1配線と、
供給される接続切換信号により前記複数の第1配線の中から任意の配線を選択し接続を切り換える接続切換装置と、
前記接続切換装置への前記接続切換信号を受信する接続切換信号受信装置を含む可動部側入出力部とを備え、
前記固定部は、
前記接続切換装置への接続切換信号を送信する接続切換信号送信装置を含む固定部側入出力部を備え、
前記可動部側入出力部と前記固定部側入出力部とを接続し、前記接続切換信号受信装置を介して前記接続切換装置に接続切換信号を送信する第2配線と、
前記可動部側入出力部と前記固定部側入出力部とを接続し、前記接続切換装置により前記複数の第1配線の中から選択され接続を切り換えられた前記任意の配線を前記固定部側入出力部に接続する、前記複数の第1配線よりも少数の第3配線と
を備えたことを特徴とするプリント基板の検査装置。
A fixed portion having a control device for controlling the inspection device, and a movable portion that moves in two directions, the X direction and the Y direction, perpendicular to each other along the surface of the printed circuit board installed in the installation device. A printed circuit board inspection apparatus that performs electrical inspection of a board,
The movable part is
A plurality of contact terminals attached to the contact terminal support, each contacting a plurality of contacts on the printed circuit board;
A plurality of first wires respectively connected to the plurality of contact terminals;
A connection switching device for selecting an arbitrary wiring from the plurality of first wirings and switching the connection in response to a supplied connection switching signal;
A movable portion side input / output unit including a connection switching signal receiving device for receiving the connection switching signal to the connection switching device;
The fixing part is
A fixed portion side input / output unit including a connection switching signal transmitter for transmitting a connection switching signal to the connection switching device;
A second wiring that connects the movable part side input / output part and the fixed part side input / output part, and transmits a connection switching signal to the connection switching apparatus via the connection switching signal receiver;
The movable part side input / output part and the fixed part side input / output part are connected, and the arbitrary wiring whose connection is selected and switched from the plurality of first wirings by the connection switching device is connected to the fixed part side. An inspection apparatus for a printed circuit board, comprising: a third wiring less than the plurality of first wirings connected to an input / output unit.
前記可動部は、さらに、前記X方向とY方向とに直交するZ方向および前記Z方向に沿った軸線周りに移動する請求項1に記載のプリント基板の検査装置。   The printed circuit board inspection apparatus according to claim 1, wherein the movable unit further moves around a Z direction orthogonal to the X direction and a Y direction and an axis along the Z direction. 前記可動部は、前記制御装置により制御されて移動する請求項1または2に記載のプリント基板の検査装置。   The printed circuit board inspection apparatus according to claim 1, wherein the movable portion moves under the control of the control device. 前記可動部は、前記プリント基板の下方と上方にそれぞれ設けられている請求項1ないし3のうちのいずれか一つに記載のプリント基板の検査装置。   4. The printed circuit board inspection apparatus according to claim 1, wherein the movable portion is provided below and above the printed circuit board. 5.
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