JP2009271058A - Photographing inspection device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a photographing inspection device inspecting an object to be inspected while conveying the object to be inspected as maintained at an original state. <P>SOLUTION: The photographing inspection device for inspecting the belt-like object to be inspected, moves the belt-like object that is hung on a pair of conveying rollers 371, 372, which are located at a predetermined interval, and therewith photographing its image from above while holding a portion that the object passes through the predetermined interval from underneath by the holding unit, in which a guide roller 392 contacts with the object that passes through the interval from underneath, and is rotatable with the movement of the object, as the holding unit. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an imaging inspection apparatus, and more particularly to an imaging inspection apparatus that inspects an image of a strip-shaped inspection object such as a flexible printed circuit board.

  The flexible printed circuit board after the completion of manufacture is wound in a roll shape so that it can be easily stored and transported. However, an imaging inspection device is used to detect defective products such as circuit print abnormalities, cracks, and scratches. It must be passed.

  FIG. 1 is a perspective view showing a configuration of a conventional imaging / inspection apparatus 1 for inspecting by taking an image of a strip-shaped inspection object wound in a roll shape. The imaging / inspection apparatus 1 has a predetermined interval. The belt-like inspection object 21 is hung on a pair of transport rollers 16, 16 and the inspection object 21 is transferred from the roll 16 to the roll 16, so that it is rolled into a belt shape. While being unfolded and moved, a portion of the inspection object passing through the interval is photographed from above by the photographing means 15 and the image photographed by the computer program is inspected.

  Since inspection work using a computer program requires very high accuracy, if the flexible printed circuit board that passes through the interval between the rolls 16 and 16 is bent too much by its own weight, an error occurs in the determination of a defective product. A holding table 19 that supports the plane from the bottom is provided so that a portion for shooting an image is placed on the plane.

Taiwan Patent Application No. 95112709 Taiwan Patent Application No. 9021497 Taiwan Patent Application No. 93215128

  However, in this conventional imaging inspection apparatus in which the holding table 19 supports the inspection object 21 with a flat surface, since the flat surface that supports the inspection object 21 uses a glass material, its surface is not a complete flat surface. It is easy to make mistakes in judging good products. Further, since the holding table 19 whose surface is not a flat surface comes into contact with the inspection object 21, not only the friction range is wide, but also the risk that the inspection object 21 is worn due to the friction with the incomplete plane is increased. Furthermore, since the peripheral edge of the plane that supports the inspection object 21 is formed at an acute angle of 90 °, the acute angle may contact the inspection object 21 and cause damage.

  Accordingly, an object of the present invention is to provide an imaging inspection apparatus capable of solving the above-described problems and performing inspection while transporting the inspection object 21 while maintaining the original state.

  In order to achieve the above object, the present invention holds a portion passing through the interval of the inspection object while moving the belt-shaped inspection object on a pair of transport rollers arranged at a predetermined interval. In the imaging inspection apparatus for inspecting by taking an image from above while being held from below by means, as the holding means, the guide roller applies the inspection object passing through the interval from below, and according to the movement of the inspection object An imaging inspection apparatus characterized by being arranged so as to be able to rotate is provided.

  The specific configuration of the imaging inspection apparatus is, for example, a support frame, a pair of transport rollers supported by the support frame so as to open a predetermined interval, and the support frame being rotatable during the interval. And a pair of guide rollers supported so as to be able to hold and hold a portion passing through the interval of the belt-shaped inspection object that is hung and conveyed by the pair of conveyance rollers from below. The support frame may be provided with inspection means attached so that an image of the inspection object can be taken from above the interval and inspected.

  In the imaging inspection apparatus according to the present invention, a mounting plate is further movably installed on the support frame, and the pair of guide rollers are located together with the inspection unit so that the pair of guide rollers are directly below the inspection unit. It is preferable to be configured to be mounted in parallel on the surface of the mounting plate.

  Furthermore, in the imaging inspection apparatus of the present invention, it is preferable that the pair of guide rollers is configured to be installed on the mounting plate so as to be vertically movable for position adjustment.

  In the imaging inspection apparatus of the present invention, a roller mounting base is further installed on the mounting plate so as to be movable up and down, and the pair of guide rollers have both ends mounted on the roller mounting base via bearings. It is preferable to be configured to be held rotatably.

  According to the above configuration, the present invention does not employ a method of supporting the object to be inspected on a plane, and holds the object to be inspected from below with the rotatable guide roller disposed between the pair of transport rollers. Therefore, there is no risk of damage due to friction or damage due to acute angles, especially when a pair of guide rollers with a short distance between the rollers is used, there is almost no dripping or bending due to the weight of the object to be inspected. You can take a close picture.

It is a perspective view which shows the structure of the conventional imaging | photography inspection apparatus 1. FIG. 1 is a perspective view illustrating an overall configuration of a photographing inspection apparatus according to a first embodiment of the present invention. It is sectional drawing which shows the part by which the guide roller in the imaging | photography inspection apparatus is attached to the support frame. It is a perspective view which shows the whole structure of the imaging | photography inspection apparatus of the 2nd Embodiment of this invention.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

2 and 3 show a first preferred embodiment of the present invention.
First, FIG. 2 is a perspective view showing the overall configuration of the imaging inspection apparatus of this embodiment. As shown in the drawing, the imaging inspection apparatus of this embodiment includes a support frame 31, first and second transport rollers 371 and 372 supported so as to be spaced apart from the support frame 31, and the first and the second. A pair of guide rollers 392 and 392 that are rotatably attached to the support frame 31 so as to be positioned between the second transport rollers 371 and 372, and an inspection unit 36 that is supported by the support frame 31. ing.

  FIG. 3 is a cross-sectional view showing a portion where the guide rollers 392 and 392 are attached so as to extend from the support frame 31.

  More specifically, the support frame 31 has a main frame 311 formed in a plate-like body, and first and second transport rollers 371 and 372 and a guide roller 392 are provided on one side of the main frame 311. The left and right moving rails 312 extending in the left and right directions are fixed in parallel with the direction in which the 392s are arranged. A vertical driving means 32 that can reciprocate along the left-right moving rail 312 by driving a left-right driving motor 315 is attached to the left-right moving rail 312. The vertical drive means 32 includes a vertical drive motor 321 and a mounting plate 322 that is driven up and down by the vertical drive motor 321.

  The first transport roller 371 is attached to the main frame 311 and can be rotated clockwise by being driven by a rotational drive motor 374. When the first transport roller 371 rotates, the strip-shaped inspection object 4 hung on the first and second transport rollers 371 and 372 is transferred from the second transport roller 372 to the first transport roller 371. And continuously conveyed.

  A pressing roller 383 is attached next to the first transport roller 371. The pressing roller 383 is for holding the inspection object 4 that is hung on the first conveyance roller 371 and holding it on the first conveyance roller 371 to stabilize the conveyance of the inspection object 4.

  The pair of guide rollers 392 and 392 holds the attachment plate 322 by applying a portion passing through the interval of the strip-shaped inspection object 4 conveyed by the first and second conveyance rollers 371 and 372 from below. In addition, it is arranged and configured so as to be able to rotate in accordance with the movement of the strip-shaped inspection object 4.

  The inspection means 36 is fixed to the mounting plate 322 so that the camera can be directed between the guide rollers 392 and 392 from directly above the pair of guide rollers 392 and 392.

  Further, as shown in FIGS. 2 and 3, the guide rollers 392 and 392 are attached to the mounting plate 322 via a roller mounting base 391 having a guide long hole 394. The roller mounting base 391 is installed on the mounting plate 322 so as to be vertically movable by a positioning pin 393 that is inserted into the guide long hole 394 and screwed into the mounting plate 322. Accordingly, the position of the guide rollers 392 and 392 can be adjusted with respect to the mounting plate 322 within a range defined by the guide long hole 394.

  When the mounting plate 322 rises and the inspection object 4 between the pair of guide rollers 392 and 392 is lifted to a position slightly higher than the peripheral surface vertex of the first and second transport rollers 371 and 372, The tension is applied to the part between the peripheral vertices of the pair of guide rollers 392 and 392 of the object 4 so that the drooping or bending due to its own weight is almost eliminated, that is, the state is very close to the plane. Can take pictures close to a plane. When the mounting plate 322 moves to the left and right and moves to another position, the guide rollers 392 and 392 lift the other portion between the first and second transport rollers 371 and 372, thereby moving the other portion to the other portion. The inspection means 36 can be photographed with tension applied.

  Next, another preferred embodiment of the present invention will be described with reference to FIG.

  As shown in FIG. 4, the second preferred embodiment of the present invention has substantially the same configuration as the first preferred embodiment shown in FIG. 2, and the rollers to which only guide rollers 392 and 392 are attached. The structure of the mounting base 391 is different from that of the first preferred embodiment.

  In the second embodiment, the roller mounting base 391 to which the guide rollers 392 and 392 are attached includes a first bearing 396 adjacent to a portion attached to the mounting plate 322, and a first roller. It has the extending | stretching part 397 extended | stretched in parallel with the extending | stretching direction of a pair of guide rollers 392 and 392 from the bearing 396, and the 2nd bearing 398 provided in the front-end | tip of the extending | stretching part 397. The pair of guide rollers 392 and 392 are rotatably supported at both ends by a roller mounting base 391 via first and second bearings 396 and 398, respectively.

  According to the above configuration, the present invention does not employ a method of supporting the object to be inspected on a plane, and holds the object to be inspected from below with the rotatable guide roller disposed between the pair of transport rollers. Therefore, there is no risk of damage due to friction or damage due to acute angles, especially when a pair of guide rollers with a short distance between the rollers is used, there is almost no dripping or bending due to the weight of the object to be inspected. A close image can be taken, and for example, it can be applied to surface inspection of a strip-shaped object such as a flexible printed circuit board.

Reference Signs List 31 Support frame 311 Main frame 312 Left and right moving rail 315 Left and right drive motor 32 Vertical drive means 321 Vertical drive motor 322 Mounting plate 36 Inspection means 371 First transport roller 372 Second transport roller 383 Pressing roller 391 Roller mounting bases 392 and 392 Guide roller 393 Positioning pin 394 Guide slot 396 First bearing 397 Extending portion 398 Second bearing 4 Inspected object

Claims (5)

While holding a belt-like inspection object on a pair of transport rollers arranged at a predetermined interval and moving the inspection object, a portion passing through the interval of the inspection object is held from below by a holding means. In photography inspection equipment that takes and inspects,
As the holding means, a guide roller is arranged and configured so as to be able to apply the inspection object passing through the interval from below and rotate according to the movement of the inspection object. apparatus. A support frame;
A pair of transport rollers supported by the support frame so as to open a predetermined interval;
A portion of the belt-like inspection object passing through the interval that is conveyed while being hung on the pair of conveyance rollers and being supported by the support frame can be held from below. A pair of guide rollers supported so as to
An imaging inspection apparatus, comprising: inspection means attached to the support frame so that an image of the object to be inspected can be taken from above the interval and inspected. A mounting plate is further movably installed on the support frame,
The imaging inspection apparatus according to claim 2, wherein the pair of guide rollers are mounted in parallel with the inspection unit on the surface of the mounting plate so as to be directly below the inspection unit. .   The imaging inspection apparatus according to claim 3, wherein the pair of guide rollers are installed on the mounting plate so as to be vertically movable for position adjustment. A roller mounting base is further installed on the mounting plate so as to be movable up and down.
The imaging inspection apparatus according to claim 4, wherein both ends of the pair of guide rollers are rotatably held on the roller mounting base via bearings.

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