WO2012043690A1 - Holding structure for planar sheet in appearance inspection device - Google Patents

Holding structure for planar sheet in appearance inspection device Download PDF

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Publication number
WO2012043690A1
WO2012043690A1 PCT/JP2011/072313 JP2011072313W WO2012043690A1 WO 2012043690 A1 WO2012043690 A1 WO 2012043690A1 JP 2011072313 W JP2011072313 W JP 2011072313W WO 2012043690 A1 WO2012043690 A1 WO 2012043690A1
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WO
WIPO (PCT)
Prior art keywords
stage
circuit board
printed circuit
plane
holding
Prior art date
Application number
PCT/JP2011/072313
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French (fr)
Japanese (ja)
Inventor
昌作 山本
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株式会社メガトレード
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Publication of WO2012043690A1 publication Critical patent/WO2012043690A1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G01N21/956—Inspecting patterns on the surface of objects
    • 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
    • H05K13/0053—Arrangements for assisting the manual mounting of components, e.g. special tables or light spots indicating the place for mounting
    • 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
    • H05K13/081—Integration of optical monitoring devices in assembly lines; Processes using optical monitoring devices specially adapted for controlling devices or machines in assembly lines
    • H05K13/0815—Controlling of component placement on the substrate during or after manufacturing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G01N21/956—Inspecting patterns on the surface of objects
    • G01N2021/95638—Inspecting patterns on the surface of objects for PCB's

Definitions

  • the present invention relates to an appearance inspection apparatus used when inspecting a planar plate material such as a printed circuit board. More specifically, the planar plate material is conveyed obliquely upward, and the planar plate material is formed. This is related to a structure in which the flat plate material is held on the stage when inspecting.
  • an appearance inspection apparatus has been proposed in which a printed circuit board is conveyed obliquely upward to inspect the appearance of the printed circuit board.
  • the holding unit 60 that holds the upper and lower ends of the printed circuit board 5 and the printed circuit board 5 that is held by the holding unit 60 are arranged at an angle of about 30 degrees.
  • An apparatus comprising a transport unit 6 that transports in an obliquely up and down direction and an image acquisition unit 7 that acquires a surface image from a printed board transported obliquely upward by the transport unit 6.
  • An apparatus is disclosed in which the formation state of a pad, a wiring pattern, a resist, or the like can be inspected based on the obtained image.
  • the installation area can be reduced as compared with the case where the printed circuit board 5 is moved horizontally, and when the printed circuit board 5 is defective.
  • the inclined printed circuit board 5 can be visually judged from the normal direction.
  • the upper end holding part 61 and the lower end holding part 62 that hold the upper end and the lower end of the printed board 5 are held facing each other upward and downward. If the inclination angle is small, the central portion of the printed circuit board 5 is bent by its own weight, and there is a possibility that the focus when acquiring an image of the large printed circuit board 5 may not be achieved.
  • the upper end holding part 61 is strongly pressed with a spring toward the lower end side of the printed circuit board 5. Therefore, if the pressing force of the spring is large, the printed circuit board 5 is bent more and the focus is not adjusted. there is a possibility.
  • the printed circuit board 5 can be attached without being in close contact with the bottom surface part of the upper end holding part 61 or the bottom surface part of the lower end holding part 62. Since it can be held, if the printed circuit board 5 is held in an inclined state, the image will not be in focus.
  • the holding unit 60 When the printed circuit board 5 is held by the holding unit 60, the end of the printed circuit board 5 is brought into contact with the spring at the upper end and pushed up in the plane direction, and then the lower end of the printed circuit board 5 is held by the lower end holding unit 62. Therefore, the mounting direction and the taking-out direction of the printed circuit board 5 (that is, the normal direction with respect to the plane of the printed circuit board 5) and the holding direction (the direction along the plane) are different. There has been a problem that it takes time to install and remove.
  • An object of the present invention is to provide an appearance inspection apparatus that can easily perform work.
  • the present invention places a flat plate material in an inclined state and conveys it in a slanting vertical direction, and a holding unit for holding the flat plate material placed on the stage.
  • the jaw is pressed below the plane of the stage by the back surface of the planar plate material placed on the stage, and the jaw By pressing the piece below the plane, the jaw piece rotates integrally with the jaw piece, the pressing piece for pressing the surface of the planar plate material to the stage side, and the jaw piece protrudes above the plane of the stage.
  • an elastic body that switches between a first state and a second state in which the flat plate member is pressed against the plane of the stage by the pressing piece.
  • the planar plate material is entirely held on the stage, so that an image of the surface can be acquired without causing any deflection. Moreover, even when the inclination angle of the stage is increased, the planar plate material is pressed from the surface to the stage, so that the planar plate material can be securely adhered on the stage, Since the mounting direction of the flat plate material stage can be matched with the direction in which the flat plate material is held, the operation for mounting or taking out the flat plate material can be easily performed.
  • the jaw piece is provided with a stepped portion for pressing the end of the planar plate in the direction along the plane of the planar plate.
  • the end of the planar plate when holding the end of the planar plate by rotating the jaw piece, the end of the planar plate can be hooked on the stepped portion and pressed in the direction along the plane, The flat plate material can be more reliably fixed.
  • the holding portion is provided on the upper end side of the planar plate member, and the lower end holding portion having a tapered portion is provided on the lower end side so that the planar plate member is adhered to the stage by its own weight.
  • planar plate material can be brought into close contact with the stage side at the tapered portion also on the lower end side.
  • the flat plate member when pressed downward by the stepped portion, the flat plate member can be more closely attached to the stage by the tapered portion.
  • an appearance inspection comprising a stage for placing a planar plate material in an inclined state and transporting it in an obliquely vertical direction, and a holding unit for holding the planar plate material placed on the stage.
  • the holding portion is pressed below the plane of the stage by the back surface of the flat plate material placed on the stage, and the jaw piece is pressed below the plane.
  • a pressing piece that rotates integrally with the jaw piece and presses the surface of the flat plate plate toward the stage, and a first state in which the jaw piece protrudes above the plane of the stage; Since the elastic member is switched to the second state in which the flat plate member is pressed against the flat surface of the stage by the pressing piece, it is possible to prevent the focus from being shifted during image acquisition without causing bending. Even when the inclination angle of the stage is increased, the planar plate material is pressed from the surface, so that the planar plate material can be securely adhered onto the stage. Since the direction in which the flat plate material is held and the direction in which the flat plate material is held can be made to coincide with each other, the operation for placing or taking out the flat plate material can be easily performed.
  • FIG. 1 is a schematic side view of an appearance inspection apparatus according to an embodiment of the present invention.
  • the appearance inspection apparatus 1 in this embodiment is designed to inspect pads, wiring patterns, through holes, resists, silk, and the like formed on a printed circuit board 5 (broken line in FIG. 1).
  • the installation area is reduced by transporting the substrate in an obliquely vertical direction, and the printed circuit board 5 determined to be defective by visual inspection can be inspected.
  • the printed circuit board 5 is placed on the stage 21 and conveyed obliquely in the vertical direction, the vicinity of the upper end of the printed circuit board 5 is held by the holding unit 3 and the printed circuit board 5 is placed.
  • the direction in which the printed circuit board 5 is held is made coincident so that the printed circuit board 5 can be securely fixed.
  • the structure of the appearance inspection apparatus 1 in the present embodiment will be described.
  • the appearance inspection apparatus 1 in this embodiment obtains an image from a transport unit 2 that transports a printed circuit board 5 along an oblique vertical direction, and the printed circuit board 5 transported by the transport unit 2. And an image acquisition unit 4 that performs processing.
  • the transport unit 2 is configured to transport the printed circuit board 5 in a state in which the stage 21 configured in a plane is inclined. As shown in FIG. 2, frames 24 are provided on both sides of the stage 21. The stage 21 is transported along the frame 24. The frame 24 is positioned at the lowermost side in the initial state, and the printed circuit board 5 is placed on the stage 21 and the printed circuit board 5 that has been inspected can be taken out. Then, by starting the inspection, the motor is driven to move the stage 21 upward, and an image is acquired in the vicinity of the uppermost end. Then, the image is folded downward and moved to the lowermost end.
  • the inclination angle in the transport unit 2 is preferably set to an angle that allows the printed circuit board 5 to be visually recognized from the normal direction when an operator sits on a chair and works.
  • the angle is set within the range of 30 to 70 degrees (preferably 45 to 60 degrees).
  • the installation area can be reduced, and the printed circuit board 5 can be visually confirmed from the normal direction when sitting on a chair and working.
  • the tilt angle is fixed by the framed frame, but an angle changing mechanism that can change the tilt angle may be provided as appropriate.
  • a rotatable hinge may be attached to the front end side of the transport unit 2 and a fixing portion that can fix the rear end side at an arbitrary height position may be provided.
  • a fixing portion that can fix the rear end side at an arbitrary height position.
  • the image acquisition unit 4 is configured to irradiate light from an oblique direction to the printed circuit board 5 that has been conveyed and acquire the reflected light.
  • a light source 41 such as a fluorescent lamp, an LED, or a halogen lamp is used, and light from the light source 41 is irradiated to the printed circuit board 5 from an oblique direction.
  • the light from the light source 41 is reflected by the printed circuit board 5 and acquired by the line sensor 43 provided in the normal direction of the printed circuit board 5.
  • the mirror 42 is provided in the normal direction of the printed circuit board 5, and the reflected light is reflected there to acquire the reflected light.
  • the holding unit 3 provided on the stage 21 is configured as follows. The structure of the holding unit 3 will be described with reference to FIGS.
  • the direction in which the printed circuit board 5 is placed and the direction in which the printed circuit board 5 is pressed coincide with each other.
  • the mounting direction of the printed circuit board 5 is matched with the pressing direction, and the printed circuit board 5 is slightly lifted from the stage 21 when being removed.
  • the holding unit 3 provided on the stage 21 is provided with a jaw piece 31 provided so as to be able to project and retract from the surface of the stage 21 and a pressing piece 33 for pressing the surface of the printed circuit board 5 toward the stage 21, respectively. It can be rotated by a hinge 34 provided at each base end portion. Further, a spring 35 is attached between the vicinity of the hinge 34 and the pressing piece 33, and the jaw piece 31 is made to protrude from the surface of the stage 21 by the pulling force of the spring 35. The state can be switched to a second state in which the jaw piece 31 is submerged in the stage 21 and the printed board 5 is pressed by the pressing piece 33.
  • the end of the printed board 5 can be inserted into the gap between the tip portions of the jaw piece 31 and the pressing piece 33 from above.
  • 31 and the pressing piece 33 are inclined at 45 degrees with respect to the stage 21, so that the angle connecting the jaw piece 31 and the distal end portion of the pressing piece 33 is about 45 degrees (135 degrees) with respect to the stage 21. I have to.
  • the release piece 36 extending from the rear of the pressing piece 33 is brought into contact with the base 37 so that the jaw piece 31 is stopped in the protruded state. In this way, when viewed from the normal direction of the stage 21, the gap W (see FIG.
  • the step 32 is provided on the surface of the jaw piece 31, and when the jaw piece 31 is rotated, the step 32 is brought into contact with the end portion of the printed circuit board 5 to rotate the jaw piece 31. It is made to press downward along the plane of the printed circuit board 5 by movement.
  • this step portion 32 a structure in which the thickness becomes thinner toward the tip of the jaw piece 31 is used. With this, when the holding portion 3 is rotated, any one of the step portions 32 causes the printed circuit board 5 to be rotated. The end is pressed in the direction along the plane.
  • the holding portion 3 is provided with a release piece 36 for releasing the pressed state of the printed circuit board 5.
  • the release piece 36 is provided so as to extend to the rear end side of the pressing piece 33. By pressing the release piece 36 from above, the jaw piece is resisted against the pulling force of the spring 35. 31 is rotated upward.
  • the holding unit 3 configured in this manner is slidably mounted in a vertical direction on a groove 22 provided on the surface of the stage 21, and can be fixed with a screw or the like at an arbitrary height position. . Then, the printed circuit board 5 is held by the holding unit 3, the protruding piece provided on the side of the stage 21, and the lower end holding unit 25 provided below the stage 21. When holding the printed circuit board 5, if only the upper end side is pressed, the printed circuit board 5 may fall off the stage 21, so the lower end part of the printed circuit board 5 is attached to the lower end holding part 25. A tapered portion 25 a that presses toward the stage 21 by its own weight is provided, and the printed circuit board 5 is pressed against the surface of the stage 21 by the pressing force of the tapered portion and the holding portion 3.
  • the holding unit 3 is slid in the direction along the groove 22 of the stage 21 and fixed with screws at an optimum position so as to correspond to the shape and size of the printed circuit board 5.
  • the holding unit 3 fixed in this manner, the lower end portion of the printed circuit board 5 to be inspected is brought into contact with the lower end holding unit 25.
  • the lower end portion of the printed circuit board 5 is pressed by its own weight toward the surface side of the stage 21 by the tapered portion 25 a of the lower end holding portion 25.
  • the printed circuit board 5 is slid in the left-right direction, and the side edge of the printed circuit board 5 is placed on the protruding piece 26 (see FIGS. 1 and 2) provided on the side of the stage 21. Position to position.
  • the upper end portion of the printed circuit board 5 is pressed toward the surface side of the stage 21. Then, the upper end portion of the printed circuit board 5 is inserted between the jaw piece 31 and the pressing piece 33 (between the gaps W) of the holding unit 3 and comes into contact with the upper portion of the distal end portion of the jaw piece 31.
  • the holding unit 3 rotates to the second state side against the force of the spring 35 (see FIG. 5). State), the vicinity of the upper end portion of the printed circuit board 5 is pressed by the pressing piece 33.
  • the upper end portion of the printed circuit board 5 is pressed toward the lower end side when rotating by any one of the step portions 32 of the jaw piece 31, thereby causing the printed circuit board 5 to follow the plane direction and the normal direction. Can be pressed in the direction.
  • the stage 21 When the printed circuit board 5 is held on the stage 21 in this way and then an inspection start button (not shown) is pressed, the stage 21 is transported obliquely upward, and a surface image is acquired by the image acquisition unit 4 for inspection. Is called. Then, it is folded at the upper end and conveyed again to the initial position.
  • the finger is pressed from the back side to the front side of the printed circuit board 5 through the notch 23 provided on the side of the stage 21. 5 is released.
  • the release piece 36 of the holding unit 3 is pressed from above to release the holding state of the printed circuit board 5.
  • the printed circuit board 5 is lifted slightly above the stage 21 by the jaw piece 31, and a gap can be formed between the stage 21 and the printed circuit board 5.
  • the printed circuit board 5 since the lower end portion of the printed circuit board 5 is held by the lower end holding section 25 having the tapered portion 25a, the printed circuit board 5 does not slide down from the lower end section even if the upper end section is lifted. Then, with the vicinity of the upper end of the printed circuit board 5 being lifted from the stage 21 in this way, a finger is put into the gap with the stage 21, and the printed circuit board 5 is lifted and collected.
  • the printed circuit board 5 Since it has an elastic body that switches between a first state that protrudes further upward and a second state in which the printed board 5 is pressed against the plane of the stage 21 by the pressing piece 33, It is possible to prevent the deviation of focus at the time of image acquisition without causing themselves. Even when the inclination angle of the stage 21 is increased, the printed circuit board 5 is pressed from the surface, so that the printed circuit board 5 can be securely adhered to the stage 21. Furthermore, the printed circuit board 5 Since the direction in which the substrate is placed on the stage 21 and the direction in which the printed circuit board 5 is held can be matched, the operation for placing or removing the printed circuit board 5 can be easily performed.
  • the jaw piece 31 is provided with the step 32 that presses the end portion of the printed circuit board 5 in the direction along the plane of the printed circuit board 5, the jaw piece 31 is rotated to rotate the end portion of the printed circuit board 5. Can be pressed in a direction along the plane of the printed circuit board 5, and the planar plate material can be more reliably fixed.
  • the holding part 3 is provided on the upper end side of the printed circuit board 5 and the lower end holding part 25 having the tapered part 25a that makes the printed circuit board 5 adhere to the stage 21 by its own weight is provided on the lower end side. Also, the printed circuit board 5 can be brought into close contact with the surface side of the stage 21 by the tapered portion 25a.
  • the printed board 5 has been described as an example of the planar board material, but is not limited to the printed board 5, and planar members such as a liquid crystal board, glass, and a resin board are used. You may make it use.
  • the stage 21 is conveyed while being inclined at an angle of 45 to 60 degrees.
  • the structure of the holding unit 3 can also be applied to the case where the stage 21 is conveyed at a horizontal angle. it can.
  • the upper end portion of the printed circuit board 5 is pressed when transported while being inclined, but the side end portion of the printed circuit board 5 is held by the similar holding unit 3. Also good.
  • the holding unit 3 is manually rotated.
  • the holding unit 3 may be rotated using a driving source such as a solenoid or a motor.

Abstract

[Problem] When transporting a printed substrate in a diagonally vertical direction, to eliminate defocusing and to facilitate the task of attachment and removal thereof. [Solution] An appearance inspection device (1) is provided with: a stage (21) that carries a printed substrate (5) in a tilted state and transports the printed substrate (5) in a diagonally vertical direction; and a holding section (3) that holds the printed substrate (5) that is carried on the stage (21). The appearance inspection device (1) is configured in a manner so as to have: a jaw piece (31) that presses the holding section (3) downwards from the plane of the stage (21) by means of the rear surface of the printed substrate (5) carried on the stage (21); a pressing piece (33) that, by means of pressing the jaw piece (31) downwards from the plane, rotates integrally with the jaw piece (31), and presses the rear surface of the printed substrate (5) towards the stage (21); and an elastic body that can switch between a first state that causes the jaw piece (31) to protrude upwards from the plane of the stage (21) and a second state that presses the substrate in the plane into the plane of the stage (21) by means of the pressing piece (33).

Description

外観検査装置における平面状板材の保持構造Flat plate holding structure for visual inspection equipment
　本発明は、プリント基板などのような平面状板材を検査する際に使用される外観検査装置に関するもので、より詳しくは、斜め上方に平面状板材を搬送させて、その平面状板材の形成状態を検査する際に、その平面状板材をステージに保持させるようにした構造に関するものである。 The present invention relates to an appearance inspection apparatus used when inspecting a planar plate material such as a printed circuit board. More specifically, the planar plate material is conveyed obliquely upward, and the planar plate material is formed. This is related to a structure in which the flat plate material is held on the stage when inspecting.
　近年、プリント基板を斜め上方に搬送させてプリント基板の外観を検査するようにした外観検査装置が提案されている。例えば、下記の特許文献１には、図６に示すように、プリント基板５の上端および下端を保持する保持部６０と、当該保持部６０に保持されたプリント基板５を約３０度の角度で斜め上下方向に搬送させる搬送部６と、当該搬送部６によって斜め上方に搬送されたプリント基板から表面画像を取得する画像取得部７とを備えてなる装置であって、画像取得部７で取得された画像に基づいてパッドや配線パターン、レジストなどの形成状態を検査できるようにしたものが開示されている。このような装置によれば、卓上でプリント基板を検査する際に、プリント基板５を水平移動させる場合に比べて設置面積を小さくすることができるとともに、プリント基板５が不良であった場合には、傾斜したプリント基板５を法線方向から目視で判断させることができるというメリットがある。 Recently, an appearance inspection apparatus has been proposed in which a printed circuit board is conveyed obliquely upward to inspect the appearance of the printed circuit board. For example, in Patent Document 1 below, as shown in FIG. 6, the holding unit 60 that holds the upper and lower ends of the printed circuit board 5 and the printed circuit board 5 that is held by the holding unit 60 are arranged at an angle of about 30 degrees. An apparatus comprising a transport unit 6 that transports in an obliquely up and down direction and an image acquisition unit 7 that acquires a surface image from a printed board transported obliquely upward by the transport unit 6. An apparatus is disclosed in which the formation state of a pad, a wiring pattern, a resist, or the like can be inspected based on the obtained image. According to such an apparatus, when the printed circuit board is inspected on the table, the installation area can be reduced as compared with the case where the printed circuit board 5 is moved horizontally, and when the printed circuit board 5 is defective. There is an advantage that the inclined printed circuit board 5 can be visually judged from the normal direction.
特開２００８－８３０３４号公報JP 2008-83034 A
　しかしながら、このような外観検査装置では次のような問題を生じる。 However, such an appearance inspection apparatus has the following problems.
　すなわち、上述の外観検査装置では、プリント基板５を保持させる場合、プリント基板５の上端および下端を保持する上端保持部６１および下端保持部６２をそれぞれ上方および下方に対向させて保持しているため、傾斜角度が小さくなるとプリント基板５の中央部分が自重で撓んでしまい、大きなプリント基板５の画像を取得する際のピントが合わなくなる可能性がある。特に、この上端保持部６１については、プリント基板５を下端側に向けてバネで強く押圧するようにしているため、そのバネの押圧力が大きいと、よりプリント基板５が撓んでピントが合わなくなる可能性がある。 That is, in the above-described appearance inspection apparatus, when the printed board 5 is held, the upper end holding part 61 and the lower end holding part 62 that hold the upper end and the lower end of the printed board 5 are held facing each other upward and downward. If the inclination angle is small, the central portion of the printed circuit board 5 is bent by its own weight, and there is a possibility that the focus when acquiring an image of the large printed circuit board 5 may not be achieved. In particular, the upper end holding part 61 is strongly pressed with a spring toward the lower end side of the printed circuit board 5. Therefore, if the pressing force of the spring is large, the printed circuit board 5 is bent more and the focus is not adjusted. there is a possibility.
　さらには、プリント基板５の上端および下端を平面に沿った方向に押圧させる構造であると、上端保持部６１の底面部分や下端保持部６２の底面部分に密着させていなくてもプリント基板５を保持させることができるため、プリント基板５が傾いた状態で保持されてしまうと、画像のピントが合わなくなってしまう。 Furthermore, if the upper end and the lower end of the printed circuit board 5 are pressed in the direction along the plane, the printed circuit board 5 can be attached without being in close contact with the bottom surface part of the upper end holding part 61 or the bottom surface part of the lower end holding part 62. Since it can be held, if the printed circuit board 5 is held in an inclined state, the image will not be in focus.
　また、プリント基板５を保持部６０に保持させる場合、上端部のバネにプリント基板５の端部を当接させて平面方向に押し上げ、その後、プリント基板５の下端部を下端保持部６２に保持させなければならないため、プリント基板５の載置方向や取り出し方向（すなわち、プリント基板５の平面に対して法線方向）と、その保持させるための方向（平面に沿った方向）が異なってしまい、取り付け作業や取り外し作業に時間がかかってしまうといった問題を生じていた。 When the printed circuit board 5 is held by the holding unit 60, the end of the printed circuit board 5 is brought into contact with the spring at the upper end and pushed up in the plane direction, and then the lower end of the printed circuit board 5 is held by the lower end holding unit 62. Therefore, the mounting direction and the taking-out direction of the printed circuit board 5 (that is, the normal direction with respect to the plane of the printed circuit board 5) and the holding direction (the direction along the plane) are different. There has been a problem that it takes time to install and remove.
　そこで、本発明は上記課題に着目してなされたもので、プリント基板などの平面状板材を斜め上下方向に搬送させる際、ピントのずれをなくすようにするとともに、その平面状板材の取り付けや取り外し作業を簡単に行えるようにした外観検査装置を提供することを目的とする。 Accordingly, the present invention has been made paying attention to the above-mentioned problems. When a flat plate material such as a printed circuit board is transported obliquely in an up-down direction, the focus shift is eliminated, and the flat plate material is attached or detached. An object of the present invention is to provide an appearance inspection apparatus that can easily perform work.
　すなわち、本発明は上記課題を解決するために、傾斜させた状態で平面状板材を載置して斜め上下方向に搬送させるステージと、当該ステージに載置された平面状板材を保持する保持部とを備えてなる外観検査装置の平面状板材保持構造において、前記保持部を、ステージに載置される平面状板材の裏面によって当該ステージの平面より下方側に押圧される顎片と、当該顎片を平面の下方に押圧することによって、当該顎片と一体的に回動し、平面状板材の表面をステージ側に押圧させる押圧片と、前記顎片をステージの平面よりも上方に突出させた第一の状態と、押圧片によって平面上板材をステージの平面に押圧させた第二の状態とに切り替える弾性体とを有するように構成したものである。 That is, in order to solve the above-mentioned problem, the present invention places a flat plate material in an inclined state and conveys it in a slanting vertical direction, and a holding unit for holding the flat plate material placed on the stage. In the planar plate material holding structure of the appearance inspection apparatus, the jaw is pressed below the plane of the stage by the back surface of the planar plate material placed on the stage, and the jaw By pressing the piece below the plane, the jaw piece rotates integrally with the jaw piece, the pressing piece for pressing the surface of the planar plate material to the stage side, and the jaw piece protrudes above the plane of the stage. And an elastic body that switches between a first state and a second state in which the flat plate member is pressed against the plane of the stage by the pressing piece.
　このように構成すれば、平面状板材がステージ上に全面的に保持されるため、撓みを生じることなく表面の画像を取得することができる。しかも、ステージの傾斜角度を大きくした場合であっても、平面状板材を表面からステージに押圧しているため、確実にステージ上に平面状板材を密着させることができるようになり、さらには、平面状板材のステージの載置方向と平面状板材を保持させる方向とを一致させることができるため、平面状板材の載置もしくは取り出しのための作業を簡単に行うことができる。 If configured in this manner, the planar plate material is entirely held on the stage, so that an image of the surface can be acquired without causing any deflection. Moreover, even when the inclination angle of the stage is increased, the planar plate material is pressed from the surface to the stage, so that the planar plate material can be securely adhered on the stage, Since the mounting direction of the flat plate material stage can be matched with the direction in which the flat plate material is held, the operation for mounting or taking out the flat plate material can be easily performed.
　また、このような発明において、前記顎片に、平面状板材の端部を平面状板材の平面に沿った方向に押圧する段部を設けるようにする。 In such an invention, the jaw piece is provided with a stepped portion for pressing the end of the planar plate in the direction along the plane of the planar plate.
　このようにすれば、顎片を回動させて平面状板材の端部を保持させる際に、平面状板材の端部を段部に引っ掛けてその平面に沿った方向に押圧させることができ、より確実に平面状板材を固定することができる。 In this way, when holding the end of the planar plate by rotating the jaw piece, the end of the planar plate can be hooked on the stepped portion and pressed in the direction along the plane, The flat plate material can be more reliably fixed.
　さらに、前記保持部を平面状板材の上端側に設け、下端側に平面状板材を自重でステージ上に密着させるようなテーパー部を有する下端保持部を設けるようにする。 Further, the holding portion is provided on the upper end side of the planar plate member, and the lower end holding portion having a tapered portion is provided on the lower end side so that the planar plate member is adhered to the stage by its own weight.
　このようにすれば、下端側についてもそのテーパー部でステージ側に平面状板材を密着させることができるようになる。特に、段部によって下方へ押圧させた際、そのテーパー部によって、より確実に平面状板材をステージに密着させることができるようになる。 In this way, the planar plate material can be brought into close contact with the stage side at the tapered portion also on the lower end side. In particular, when pressed downward by the stepped portion, the flat plate member can be more closely attached to the stage by the tapered portion.
　本発明によれば、傾斜させた状態で平面状板材を載置して斜め上下方向に搬送させるステージと、当該ステージに載置された平面状板材を保持する保持部とを備えてなる外観検査装置の平面状板材保持構造において、前記保持部を、ステージに載置される平面状板材の裏面によって当該ステージの平面より下方側に押圧される顎片と、当該顎片を平面の下方に押圧することによって、当該顎片と一体的に回動し、平面状板材の表面をステージ側に押圧させる押圧片と、前記顎片をステージの平面よりも上方に突出させた第一の状態と、押圧片によって平面上板材をステージの平面に押圧させた第二の状態とに切り替える弾性体とを有するようにしたので、撓みを生じることなく画像取得時におけるピントのずれを防止することができる。また、ステージの傾斜角度を大きくした場合であっても、平面状板材を表面から押圧しているため、確実にステージ上に平面状板材を密着させることができる、さらには、平面状板材をステージに載置する方向と平面状板材を保持させる方向とを一致させることができるため、平面状板材の載置もしくは取り出しのための作業を簡単に行うことができる。 According to the present invention, an appearance inspection comprising a stage for placing a planar plate material in an inclined state and transporting it in an obliquely vertical direction, and a holding unit for holding the planar plate material placed on the stage. In the planar plate material holding structure of the apparatus, the holding portion is pressed below the plane of the stage by the back surface of the flat plate material placed on the stage, and the jaw piece is pressed below the plane. A pressing piece that rotates integrally with the jaw piece and presses the surface of the flat plate plate toward the stage, and a first state in which the jaw piece protrudes above the plane of the stage; Since the elastic member is switched to the second state in which the flat plate member is pressed against the flat surface of the stage by the pressing piece, it is possible to prevent the focus from being shifted during image acquisition without causing bending. Even when the inclination angle of the stage is increased, the planar plate material is pressed from the surface, so that the planar plate material can be securely adhered onto the stage. Since the direction in which the flat plate material is held and the direction in which the flat plate material is held can be made to coincide with each other, the operation for placing or taking out the flat plate material can be easily performed.
本発明の一実施の形態における外観検査装置の側面概略図1 is a schematic side view of an appearance inspection apparatus according to an embodiment of the present invention. 同形態におけるステージおよび保持部の構造を示す正面図Front view showing structure of stage and holding unit in same form 同形態におけるステージおよび保持部の構造を示す外観斜視図External perspective view showing structure of stage and holding portion in same form 同形態における保持部の動作状態を示す図（顎片を突出させた第一の状態）The figure which shows the operation state of the holding | maintenance part in the same form (the 1st state which made the jaw piece protrude) 同形態における保持部の動作状態を示す図（押圧片で押圧させた第二の状態）The figure which shows the operation state of the holding | maintenance part in the same form (the 2nd state pressed with the pressing piece) 従来例における斜め搬送の外観検査装置Appearance inspection device for oblique conveyance in the conventional example
　以下、本発明の一実施の形態について図面を参照して説明する。この実施の形態における外観検査装置１は、プリント基板５（図１における破線）に形成されたパッドや配線パターン、スルーホール、レジスト、シルクなどを検査できるようにしたものであって、プリント基板５を斜め上下方向に搬送させることによって設置面積を小さくし、しかも、目視によっても不良と判定されたプリント基板５を検査できるようにしたものである。そして、特徴的には、そのプリント基板５をステージ２１に載せて斜め上下方向に搬送させる際に、プリント基板５の上端部近傍を保持部３で保持し、プリント基板５を載置させる方向とプリント基板５を保持させる方向を一致させて、確実にプリント基板５を固定できるようにしたものである。以下、本実施の形態における外観検査装置１の構造について説明する。 Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The appearance inspection apparatus 1 in this embodiment is designed to inspect pads, wiring patterns, through holes, resists, silk, and the like formed on a printed circuit board 5 (broken line in FIG. 1). The installation area is reduced by transporting the substrate in an obliquely vertical direction, and the printed circuit board 5 determined to be defective by visual inspection can be inspected. And, characteristically, when the printed circuit board 5 is placed on the stage 21 and conveyed obliquely in the vertical direction, the vicinity of the upper end of the printed circuit board 5 is held by the holding unit 3 and the printed circuit board 5 is placed. The direction in which the printed circuit board 5 is held is made coincident so that the printed circuit board 5 can be securely fixed. Hereinafter, the structure of the appearance inspection apparatus 1 in the present embodiment will be described.
　この実施の形態における外観検査装置１は、図１に示すように、斜め上下方向に沿ってプリント基板５を搬送させる搬送部２と、その搬送部２によって搬送されたプリント基板５から画像を取得する画像取得部４とを備えている。 As shown in FIG. 1, the appearance inspection apparatus 1 in this embodiment obtains an image from a transport unit 2 that transports a printed circuit board 5 along an oblique vertical direction, and the printed circuit board 5 transported by the transport unit 2. And an image acquisition unit 4 that performs processing.
　この搬送部２は、平面状に構成されたステージ２１を傾斜させた状態でプリント基板５を搬送するようにしたもので、図２に示すように、そのステージ２１の両側にフレーム２４を設け、ステージ２１をそのフレーム２４に沿って搬送させるようにしている。このフレーム２４は、初期状態では最下端側に位置させており、そこでプリント基板５をステージ２１上に載置させるとともに検査の終了したプリント基板５を取り出せるようにしている。そして、検査を開始することによって、モーターを駆動させてステージ２１を上方に移動させ、最上端の近傍で画像を取得して、そこで下方へ折り返して最下端まで移動させる。この搬送部２における傾斜角度としては、作業者が椅子に座って作業をする際に、プリント基板５を法線方向から視認させるような角度に設定しておくことが好ましく、例えば、机上に外観検査装置１を載せて使用する場合は、３０度～７０度（好ましくは４５度～６０度）の範囲内の角度に設定しておく。このような角度に設定すれば、設置面積を小さくすることができるとともに、椅子に座って作業をする際に、プリント基板５を法線方向から目視で確認することができる。なお、この実施の形態では、枠組みされたフレームによって傾斜角度が固定されているが、適宜、その傾斜角度を変更できるような角度変更機構を設けるようにしてもよい。このような角度変更機構としては、例えば、搬送部２の前端側に回動可能なヒンジを取り付けるとともに、後端側を任意の高さ位置で固定できるような固定部を設けて構成するとよい。もちろん、この傾斜角度を変更する際には、搬送部２だけでなく画像取得部４についても同じ角度で一体的に回動させるようにしておく。 The transport unit 2 is configured to transport the printed circuit board 5 in a state in which the stage 21 configured in a plane is inclined. As shown in FIG. 2, frames 24 are provided on both sides of the stage 21. The stage 21 is transported along the frame 24. The frame 24 is positioned at the lowermost side in the initial state, and the printed circuit board 5 is placed on the stage 21 and the printed circuit board 5 that has been inspected can be taken out. Then, by starting the inspection, the motor is driven to move the stage 21 upward, and an image is acquired in the vicinity of the uppermost end. Then, the image is folded downward and moved to the lowermost end. The inclination angle in the transport unit 2 is preferably set to an angle that allows the printed circuit board 5 to be visually recognized from the normal direction when an operator sits on a chair and works. When the inspection apparatus 1 is mounted and used, the angle is set within the range of 30 to 70 degrees (preferably 45 to 60 degrees). When the angle is set to such an angle, the installation area can be reduced, and the printed circuit board 5 can be visually confirmed from the normal direction when sitting on a chair and working. In this embodiment, the tilt angle is fixed by the framed frame, but an angle changing mechanism that can change the tilt angle may be provided as appropriate. As such an angle changing mechanism, for example, a rotatable hinge may be attached to the front end side of the transport unit 2 and a fixing portion that can fix the rear end side at an arbitrary height position may be provided. Of course, when this inclination angle is changed, not only the transport unit 2 but also the image acquisition unit 4 is integrally rotated at the same angle.
　画像取得部４は、搬送されてきたプリント基板５に対して斜め方向から光を照射し、その反射光を取得するように構成される。斜め方向から光を照射させる場合、蛍光灯やＬＥＤ、ハロゲンランプなどの光源４１を使い、その光源４１からの光を斜め方向からプリント基板５に照射させる。この光源４１による光は、プリント基板５によって反射され、プリント基板５の法線方向に設けられたラインセンサ４３によって取得される。このラインセンサ４３で反射光を取得する場合、ミラー４２をプリント基板５の法線方向に設けておき、そこで反射光を反射させてその反射光を取得するようにしている。 The image acquisition unit 4 is configured to irradiate light from an oblique direction to the printed circuit board 5 that has been conveyed and acquire the reflected light. When irradiating light from an oblique direction, a light source 41 such as a fluorescent lamp, an LED, or a halogen lamp is used, and light from the light source 41 is irradiated to the printed circuit board 5 from an oblique direction. The light from the light source 41 is reflected by the printed circuit board 5 and acquired by the line sensor 43 provided in the normal direction of the printed circuit board 5. When the reflected light is acquired by the line sensor 43, the mirror 42 is provided in the normal direction of the printed circuit board 5, and the reflected light is reflected there to acquire the reflected light.
　このように構成された外観検査装置１において、ステージ２１に設けられる保持部３は次のように構成される。この保持部３の構造について、図３から図５を用いて説明する。 In the appearance inspection apparatus 1 configured as described above, the holding unit 3 provided on the stage 21 is configured as follows. The structure of the holding unit 3 will be described with reference to FIGS.
　一般的に、プリント基板５をステージ２１に載置させる場合、前述のように、プリント基板５を載置させる方向と押圧させる方向とが一致することが好ましく、また、検査の終了したプリント基板５を取り出す際は、ステージ２１とプリント基板５の間に隙間を設けてプリント基板５を指で取り出しやすくしておくのが好ましい。そこで、プリント基板５の載置方向と押圧方向などを一致させるように、図３に示すように、ヒンジ３４を中心に回動可能なＵ字状（あるいはＣ字状）の保持部３を設け、プリント基板５の載置方向と押圧方向とを一致させるとともに、取り外しの際にはプリント基板５をステージ２１から若干浮かせるようにする。 Generally, when placing the printed circuit board 5 on the stage 21, as described above, it is preferable that the direction in which the printed circuit board 5 is placed and the direction in which the printed circuit board 5 is pressed coincide with each other. When taking out, it is preferable to provide a gap between the stage 21 and the printed board 5 so that the printed board 5 can be easily taken out with a finger. Therefore, as shown in FIG. 3, a U-shaped (or C-shaped) holding portion 3 that can be rotated around the hinge 34 is provided so that the mounting direction of the printed circuit board 5 is matched with the pressing direction. The mounting direction of the printed circuit board 5 is matched with the pressing direction, and the printed circuit board 5 is slightly lifted from the stage 21 when being removed.
　このステージ２１に設けられた保持部３は、ステージ２１の表面から出没可能に設けられた顎片３１と、プリント基板５の表面をステージ２１側へ押圧する押圧片３３とをそれぞれ設けてＵ字状に構成しており、それぞれの基端部分に設けられたヒンジ３４によって回動できるようになっている。また、このヒンジ３４の近傍と押圧片３３との間にはバネ３５が取り付けられており、このバネ３５の引っ張り力によって、顎片３１をステージ２１の表面から突出させた状態にする第一の状態と、顎片３１をステージ２１に沈み込ませて押圧片３３でプリント基板５を押圧させる第二の状態に切り替えられるようになっている。この第一の状態、すなわち、プリント基板５を取り付ける状態では、顎片３１と押圧片３３との先端部分の隙間に上からプリント基板５の端部を挿入できるようにしており、例えば、顎片３１と押圧片３３をステージ２１に対して４５度で傾斜させ、これによって顎片３１と押圧片３３の先端部分を結ぶ角度をステージ２１に対して４５度（１３５度）程度の角度となるようにしている。このような角度で固定するには、押圧片３３の後方から延出する解除片３６をベース３７に当接させ、これによって顎片３１を突出させた状態に停止させるようにする。このようにすれば、ステージ２１の法線方向から見た場合に、顎片３１と押圧片３３の先端部分の隙間Ｗ（図４参照）が大きくなり、ステージ２１に対して法線方向からプリント基板５の端部を差し込むことが容易になる。また、第二の状態（図５参照）、すなわち、プリント基板５を押圧させる状態では、顎片３１がステージ２１の表面と平行となっているか、もしくは、これよりも下方となるような状態となっており、これによって、押圧片３３によってプリント基板５の表面を押圧させる。 The holding unit 3 provided on the stage 21 is provided with a jaw piece 31 provided so as to be able to project and retract from the surface of the stage 21 and a pressing piece 33 for pressing the surface of the printed circuit board 5 toward the stage 21, respectively. It can be rotated by a hinge 34 provided at each base end portion. Further, a spring 35 is attached between the vicinity of the hinge 34 and the pressing piece 33, and the jaw piece 31 is made to protrude from the surface of the stage 21 by the pulling force of the spring 35. The state can be switched to a second state in which the jaw piece 31 is submerged in the stage 21 and the printed board 5 is pressed by the pressing piece 33. In this first state, that is, the state in which the printed board 5 is attached, the end of the printed board 5 can be inserted into the gap between the tip portions of the jaw piece 31 and the pressing piece 33 from above. 31 and the pressing piece 33 are inclined at 45 degrees with respect to the stage 21, so that the angle connecting the jaw piece 31 and the distal end portion of the pressing piece 33 is about 45 degrees (135 degrees) with respect to the stage 21. I have to. In order to fix at such an angle, the release piece 36 extending from the rear of the pressing piece 33 is brought into contact with the base 37 so that the jaw piece 31 is stopped in the protruded state. In this way, when viewed from the normal direction of the stage 21, the gap W (see FIG. 4) between the distal end portion of the jaw piece 31 and the pressing piece 33 is increased, and the stage 21 is printed from the normal direction. It becomes easy to insert the end portion of the substrate 5. Further, in the second state (see FIG. 5), that is, in a state where the printed circuit board 5 is pressed, the jaw piece 31 is parallel to the surface of the stage 21 or is in a state below this. Thus, the surface of the printed circuit board 5 is pressed by the pressing piece 33.
　ところで、この押圧片３３によってプリント基板５を押圧させる場合、プリント基板５の法線方向に沿ってプリント基板５を押圧させることができるが、プリント基板５の平面に沿った方向（例えば、下方側）にプリント基板５を押圧させることができない。そこで、この実施の形態では、顎片３１の表面に段部３２を設け、顎片３１を回動させる際に、その段部３２をプリント基板５の端部に当接させるようにして、回動によってプリント基板５の平面に沿った下方へ押圧させるようにしている。この段部３２としては、顎片３１の先端に向かって肉厚が薄くなるような構造を用い、これによって、保持部３を回動させる際に、いずれかの段部３２によってプリント基板５の端部を平面に沿った方向に押圧させるようにしている。 By the way, when the printed circuit board 5 is pressed by the pressing piece 33, the printed circuit board 5 can be pressed along the normal direction of the printed circuit board 5, but the direction along the plane of the printed circuit board 5 (for example, the lower side) ) Cannot press the printed circuit board 5. Therefore, in this embodiment, the step 32 is provided on the surface of the jaw piece 31, and when the jaw piece 31 is rotated, the step 32 is brought into contact with the end portion of the printed circuit board 5 to rotate the jaw piece 31. It is made to press downward along the plane of the printed circuit board 5 by movement. As this step portion 32, a structure in which the thickness becomes thinner toward the tip of the jaw piece 31 is used. With this, when the holding portion 3 is rotated, any one of the step portions 32 causes the printed circuit board 5 to be rotated. The end is pressed in the direction along the plane.
　また、この保持部３には、プリント基板５の押圧状態を解除するための解除片３６が設けられている。この解除片３６は、押圧片３３の後端側に延出するように設けられるものであって、この解除片３６を上から押圧することによって、バネ３５の引っ張り力に抗して、顎片３１を上方へ回動させるようにしている。 Further, the holding portion 3 is provided with a release piece 36 for releasing the pressed state of the printed circuit board 5. The release piece 36 is provided so as to extend to the rear end side of the pressing piece 33. By pressing the release piece 36 from above, the jaw piece is resisted against the pulling force of the spring 35. 31 is rotated upward.
　このように構成された保持部３は、ステージ２１の表面に設けられた溝部２２上で上下方向にスライド可能に取り付けられており、任意の高さ位置でネジなどによって固定できるようになっている。そして、この保持部３と、ステージ２１の側方に設けられた突出片および、ステージ２１の下方に設けられた下端保持部２５によってプリント基板５を保持させる。なお、このプリント基板５を保持させる際、上端側のみを押圧したのではプリント基板５がステージ２１から外れて落ちてしまう可能性があるため、下端保持部２５に、プリント基板５の下端部を自重によってステージ２１側に押圧するテーパー部２５ａを設け、このテーパー部および保持部３の押圧力によってプリント基板５をステージ２１の表面へ押圧させるようにする。 The holding unit 3 configured in this manner is slidably mounted in a vertical direction on a groove 22 provided on the surface of the stage 21, and can be fixed with a screw or the like at an arbitrary height position. . Then, the printed circuit board 5 is held by the holding unit 3, the protruding piece provided on the side of the stage 21, and the lower end holding unit 25 provided below the stage 21. When holding the printed circuit board 5, if only the upper end side is pressed, the printed circuit board 5 may fall off the stage 21, so the lower end part of the printed circuit board 5 is attached to the lower end holding part 25. A tapered portion 25 a that presses toward the stage 21 by its own weight is provided, and the printed circuit board 5 is pressed against the surface of the stage 21 by the pressing force of the tapered portion and the holding portion 3.
　次に、このように構成された保持部３の作用について説明する。 Next, the operation of the holding unit 3 configured as described above will be described.
　まず、プリント基板５をステージ２１に保持させる場合、プリント基板５の形状や大きさに対応させるべく、保持部３をステージ２１の溝部２２に沿った方向にスライドさせ、最適な位置でネジで固定させる。そして、このように保持部３を固定した状態で、検査対象となるプリント基板５の下端部分を下端保持部２５に当接させる。すると、そのプリント基板５の下端部分は、下端保持部２５のテーパー部２５ａによってステージ２１の表面側へと自重によって押圧される。 First, when the printed circuit board 5 is held on the stage 21, the holding unit 3 is slid in the direction along the groove 22 of the stage 21 and fixed with screws at an optimum position so as to correspond to the shape and size of the printed circuit board 5. Let Then, with the holding unit 3 fixed in this manner, the lower end portion of the printed circuit board 5 to be inspected is brought into contact with the lower end holding unit 25. Then, the lower end portion of the printed circuit board 5 is pressed by its own weight toward the surface side of the stage 21 by the tapered portion 25 a of the lower end holding portion 25.
　このように下端部分を位置決めした状態で、プリント基板５を左右方向にスライドさせて、プリント基板５の側端をステージ２１の側方に設けられた突出片２６（図１や図２参照）に位置させるように位置決めする。 With the lower end portion positioned in this manner, the printed circuit board 5 is slid in the left-right direction, and the side edge of the printed circuit board 5 is placed on the protruding piece 26 (see FIGS. 1 and 2) provided on the side of the stage 21. Position to position.
　このように下端部分および側端部分を位置決めした状態で、今度は、プリント基板５の上端部分をステージ２１の表面側に向けて押し付ける。すると、そのプリント基板５の上端部分は、保持部３の顎片３１と押圧片３３との間（隙間Ｗの間）に挿入され、顎片３１の先端部分の上部に接触する。この状態（図４の状態）でプリント基板５の上端部分をステージ２１側へ押圧すると、保持部３は、バネ３５の力に抗して第二の状態側へと回動し（図５の状態）、押圧片３３によってプリント基板５の上端部近傍を押圧する。このとき、プリント基板５の上端部は、顎片３１のいずれかの段部３２によって回動時に下端側へと押圧され、これによってプリント基板５を平面に沿った方向と法線方向に沿った方向に押圧することができる。 With the lower end portion and the side end portion positioned as described above, this time, the upper end portion of the printed circuit board 5 is pressed toward the surface side of the stage 21. Then, the upper end portion of the printed circuit board 5 is inserted between the jaw piece 31 and the pressing piece 33 (between the gaps W) of the holding unit 3 and comes into contact with the upper portion of the distal end portion of the jaw piece 31. When the upper end portion of the printed circuit board 5 is pressed toward the stage 21 in this state (the state shown in FIG. 4), the holding unit 3 rotates to the second state side against the force of the spring 35 (see FIG. 5). State), the vicinity of the upper end portion of the printed circuit board 5 is pressed by the pressing piece 33. At this time, the upper end portion of the printed circuit board 5 is pressed toward the lower end side when rotating by any one of the step portions 32 of the jaw piece 31, thereby causing the printed circuit board 5 to follow the plane direction and the normal direction. Can be pressed in the direction.
　このようにプリント基板５をステージ２１に保持させた後、図示しない検査開始ボタンを押下すると、そのステージ２１は斜め上方に沿って搬送され、画像取得部４によって表面画像を取得して検査が行われる。そして、上端部で折り返して再び初期位置まで搬送される。 When the printed circuit board 5 is held on the stage 21 in this way and then an inspection start button (not shown) is pressed, the stage 21 is transported obliquely upward, and a surface image is acquired by the image acquisition unit 4 for inspection. Is called. Then, it is folded at the upper end and conveyed again to the initial position.
　次に、検査の終了したプリント基板５をステージ２１から取り外す場合は、ステージ２１の側方に設けられた切欠部２３を介して指をプリント基板５の裏面側から表側へと押圧し、プリント基板５の保持状態を解除する。もしくは、保持部３の解除片３６を上から押圧してプリント基板５の保持状態を解除する。すると、プリント基板５は、顎片３１によってステージ２１よりも若干上方へと持ち上げられ、ステージ２１とプリント基板５との間に隙間を形成することができる。しかも、この際、プリント基板５の下端部分はテーパー部２５ａを有する下端保持部２５によって保持されているため、上端部分が持ち上げられても下端部分からプリント基板５が滑り落ちることがない。そして、このようにプリント基板５の上端近傍をステージ２１から持ち上げた状態で、ステージ２１との隙間に指を入れ、プリント基板５を持ち上げて回収する。 Next, when the printed circuit board 5 that has been inspected is removed from the stage 21, the finger is pressed from the back side to the front side of the printed circuit board 5 through the notch 23 provided on the side of the stage 21. 5 is released. Alternatively, the release piece 36 of the holding unit 3 is pressed from above to release the holding state of the printed circuit board 5. Then, the printed circuit board 5 is lifted slightly above the stage 21 by the jaw piece 31, and a gap can be formed between the stage 21 and the printed circuit board 5. In addition, at this time, since the lower end portion of the printed circuit board 5 is held by the lower end holding section 25 having the tapered portion 25a, the printed circuit board 5 does not slide down from the lower end section even if the upper end section is lifted. Then, with the vicinity of the upper end of the printed circuit board 5 being lifted from the stage 21 in this way, a finger is put into the gap with the stage 21, and the printed circuit board 5 is lifted and collected.
　このように上記実施の形態によれば、傾斜させた状態でプリント基板５を載置して斜め上下方向に搬送させるステージ２１と、当該ステージ２１に載置されたプリント基板５を保持する保持部３とを備えてなる外観検査装置１において、前記保持部３を、ステージ２１に載置されるプリント基板５の裏面によって当該ステージ２１の平面より下方側に押圧される顎片３１と、当該顎片３１を平面の下方に押圧することによって、当該顎片３１と一体的に回動し、プリント基板５の表面をステージ２１側に押圧させる押圧片３３と、前記顎片３１をステージ２１の平面よりも上方に突出させた第一の状態と、押圧片３３によってプリント基板５をステージ２１の平面に押圧させた第二の状態とに切り替える弾性体とを有するようにしたので、撓みを生じることなく画像取得時におけるピントのずれを防止することができる。また、ステージ２１の傾斜角度を大きくした場合であっても、プリント基板５を表面から押圧しているため、確実にステージ２１上にプリント基板５を密着させることができる、さらには、プリント基板５をステージ２１に載置する方向とプリント基板５を保持させる方向とを一致させることができるため、プリント基板５の載置もしくは取り外しのための作業を簡単に行えるようにすることができる。 As described above, according to the above-described embodiment, the stage 21 on which the printed board 5 is placed in an inclined state and conveyed obliquely in the vertical direction, and the holding unit that holds the printed board 5 placed on the stage 21. 3, a jaw piece 31 that is pressed below the plane of the stage 21 by the back surface of the printed circuit board 5 placed on the stage 21, and the jaw By pressing the piece 31 below the plane, the piece 31 is rotated integrally with the jaw piece 31 to press the surface of the printed circuit board 5 toward the stage 21, and the jaw piece 31 is placed on the plane of the stage 21. Since it has an elastic body that switches between a first state that protrudes further upward and a second state in which the printed board 5 is pressed against the plane of the stage 21 by the pressing piece 33, It is possible to prevent the deviation of focus at the time of image acquisition without causing themselves. Even when the inclination angle of the stage 21 is increased, the printed circuit board 5 is pressed from the surface, so that the printed circuit board 5 can be securely adhered to the stage 21. Furthermore, the printed circuit board 5 Since the direction in which the substrate is placed on the stage 21 and the direction in which the printed circuit board 5 is held can be matched, the operation for placing or removing the printed circuit board 5 can be easily performed.
　また、顎片３１に、プリント基板５の端部をプリント基板５の平面に沿った方向に押圧する段部３２を設けるようにしたので、顎片３１を回動させてプリント基板５の端部を保持させる際、プリント基板５の平面に沿った方向に押圧することができ、より確実に平面状板材を固定することができる。 Further, since the jaw piece 31 is provided with the step 32 that presses the end portion of the printed circuit board 5 in the direction along the plane of the printed circuit board 5, the jaw piece 31 is rotated to rotate the end portion of the printed circuit board 5. Can be pressed in a direction along the plane of the printed circuit board 5, and the planar plate material can be more reliably fixed.
　さらに、保持部３をプリント基板５の上端側に設け、下端側にプリント基板５を自重でステージ２１上に密着させるようなテーパー部２５ａを有する下端保持部２５を設けるようにしたので、下端側についてもそのテーパー部２５ａでステージ２１の表面側にプリント基板５を密着させることができるようになる。 Furthermore, since the holding part 3 is provided on the upper end side of the printed circuit board 5 and the lower end holding part 25 having the tapered part 25a that makes the printed circuit board 5 adhere to the stage 21 by its own weight is provided on the lower end side. Also, the printed circuit board 5 can be brought into close contact with the surface side of the stage 21 by the tapered portion 25a.
　なお、本発明は上記実施の形態に限定されることなく、種々の態様で実施することができる。 Note that the present invention is not limited to the above-described embodiment, and can be implemented in various modes.
　例えば、上記実施の形態では、平面状板材としてプリント基板５を例に挙げて説明したが、プリント基板５に限定されるものではなく、液晶基板、ガラス、樹脂板などの平面状の部材などを用いるようにしてもよい。 For example, in the above-described embodiment, the printed board 5 has been described as an example of the planar board material, but is not limited to the printed board 5, and planar members such as a liquid crystal board, glass, and a resin board are used. You may make it use.
　また、上記実施の形態では、ステージ２１を４５度～６０度の角度で傾斜させて搬送させるようにしたが、水平な角度で搬送させる場合についても、この保持部３の構造を適用させることができる。 In the above-described embodiment, the stage 21 is conveyed while being inclined at an angle of 45 to 60 degrees. However, the structure of the holding unit 3 can also be applied to the case where the stage 21 is conveyed at a horizontal angle. it can.
　さらに、この実施の形態では、傾斜させて搬送させる際に、プリント基板５の上端部分を押圧させるようにしているが、プリント基板５の側端部分を同様の保持部３で保持させるようにしてもよい。 Furthermore, in this embodiment, the upper end portion of the printed circuit board 5 is pressed when transported while being inclined, but the side end portion of the printed circuit board 5 is held by the similar holding unit 3. Also good.
　また、上記実施の形態では、手動によって保持部３を回動させるようにしているが、ソレノイドやモーターなどの駆動源を用いて保持部３を回動させるようにしてもよい。 In the above embodiment, the holding unit 3 is manually rotated. However, the holding unit 3 may be rotated using a driving source such as a solenoid or a motor.
１・・・外観検査装置
２・・・搬送部
２１・・・ステージ
２２・・・溝
２３・・・切欠部
２４・・・フレーム
３・・・保持部
３１・・・顎片
３２・・・段部
３３・・・押圧片
３４・・・ヒンジ
３５・・・バネ
３６・・・解除片
４・・・画像取得部
４１・・・光源
４２・・・ミラー
４３・・・ラインセンサ
５・・・プリント基板 DESCRIPTION OF SYMBOLS 1 ... Appearance inspection apparatus 2 ... Conveyance part 21 ... Stage 22 ... Groove 23 ... Notch part 24 ... Frame 3 ... Holding part 31 ... Jaw piece 32 ... Step 33 ... Pressing piece 34 ... Hinge 35 ... Spring 36 ... Release piece 4 ... Image acquisition unit 41 ... Light source 42 ... Mirror 43 ... Line sensor 5 ... ·Printed board

Claims (3)

  1. 傾斜させた状態で平面状板材を載置して斜め上下方向に搬送させるステージと、当該ステージに載置された平面状板材を保持する保持部とを備えてなる外観検査装置の平面状板材保持構造において、前記保持部を、
    ステージに載置される平面状板材の裏面によって当該ステージの平面より下方側に押圧される顎片と、
    当該顎片を平面の下方に押圧することによって、当該顎片と一体的に回動し、平面状板材の表面をステージ側に押圧させる押圧片と、
    前記顎片をステージの平面よりも上方に突出させた第一の状態と、押圧片によって平面上板材をステージの平面に押圧させた第二の状態とに切り替える弾性体と、
    を有するように構成したことを特徴とする外観検査装置の平面状板材保持構造。     Flat plate holding for an appearance inspection apparatus comprising a stage for placing a flat plate in an inclined state and transporting the plate in a slanting vertical direction, and a holding unit for holding the flat plate placed on the stage. In the structure, the holding portion is
    A jaw piece pressed downward from the plane of the stage by the back surface of the planar plate placed on the stage;
    By pressing the jaw piece below the plane, it rotates integrally with the jaw piece, and a pressing piece that presses the surface of the planar plate material to the stage side,
    An elastic body that switches between a first state in which the jaw piece protrudes above the plane of the stage and a second state in which the flat plate member is pressed against the plane of the stage by the pressing piece;
    A planar plate material holding structure for an appearance inspection apparatus, characterized by comprising:
  2. 前記顎片に、平面状板材の端部を平面状板材の平面に沿った方向に押圧する段部を設けた請求項１に記載の外観検査装置の平面状板材保持構造。 The planar board | substrate holding structure of the external appearance inspection apparatus of Claim 1 which provided the step part which presses the edge part of a planar board | plate material in the direction along the plane of a planar board | plate material in the said jaw piece.
  3. 前記保持部を平面状板材の上端側に設け、下端側に平面状板材を自重でステージ上に密着させるテーパー部を備えた下端保持部を設けるようにした請求項１に記載の観検査装置の平面状板材保持構造。 The inspection apparatus according to claim 1, wherein the holding portion is provided on an upper end side of the planar plate member, and a lower end holding portion provided with a tapered portion that closely adheres the planar plate member on the stage by its own weight on the lower end side. Flat plate holding structure.
PCT/JP2011/072313 2010-09-30 2011-09-29 Holding structure for planar sheet in appearance inspection device WO2012043690A1 (en)

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JP2010220100A JP2012073194A (en) 2010-09-30 2010-09-30 Holding structure of planar plate in visual inspection device
JP2010-220100 2010-09-30

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WO2012043690A1 true WO2012043690A1 (en) 2012-04-05

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