JP2009174927A - Visual inspection method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a visual inspection method capable of inspecting cracks, or the like, generated in the inside from an appearance, even when an inspection object having a different material is arranged on the back of an inspection spot. <P>SOLUTION: A syringe 2 wherein a piston 12 is assembled with a syringe body 11 is set on a set position 52 on a stage 51, and ultraviolet rays 62 from an ultraviolet emission diode 61 of an ultraviolet irradiation device 53 is irradiated to the piston 12 which includes ultraviolet emission components, to thereby emit light. As a result, a flange part 21 is illuminated from the inside 22 by light from the piston 12, and the light is utilized as the backlight for flange part 12 inspection. An image of the flange part 12 is acquired with a camera 71, and the acquired image is subjected to image processing by an image processing device 81, and the state inside the flange part 21 is inspected. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an appearance inspection method for inspecting the state of an inspection object.

  Conventionally, when inspecting a cylindrical body, chips, cracks and the like generated in the cylindrical body due to reflected light of illumination from the surface side thereof have been inspected.

  In such an appearance inspection method, it is difficult to detect a crack generated inside.

  Therefore, an appearance inspection method is employed in which the backlight is illuminated from the back side of the cylindrical body and the inspection is performed from the front side.

  However, in the conventional appearance inspection method using a backlight, for example, when inspecting a syringe body in which a piston is assembled, light from the backlight is blocked by the piston, so that the inspection can be performed. There was a problem that I could not.

  The present invention has been made in view of such a conventional problem, and inspects cracks and the like generated in the inside from the appearance even if the inspection object is provided with a different substance on the back side of the inspection location. An object of the present invention is to provide an appearance inspection method capable of

  In order to solve the above-mentioned problem, in the appearance inspection method according to claim 1 of the present invention, in the appearance inspection method for inspecting a transparent inspection object in which different substances are arranged on the back side of the inspection place, the substance And the state of the inspection location is inspected from the surface side.

  That is, when inspecting an inspection object in which a different substance is arranged on the back side of the inspection location, the substance arranged on the back side of the inspection location is caused to emit light. Thereby, the light from this substance can be used as a backlight at the time of inspection.

  According to another aspect of the visual inspection method of the present invention, the substance is composed of a light emitting substance that emits light when irradiated with ultraviolet rays, and the substance is irradiated with ultraviolet rays to cause the substance to emit light.

  That is, the substance disposed on the back side of the inspection location is composed of a luminescent substance that emits light when irradiated with ultraviolet rays, and the substance can emit light by irradiating the substance with ultraviolet rays.

  Furthermore, in the appearance inspection method of claim 3, the inspection object is a syringe body formed in a cylindrical shape, and the substance is a piston inserted in the syringe body.

  That is, the inspection object is a syringe body, and a piston inserted into the cylindrical syringe body constitutes the substance.

  Thereby, when inspecting the syringe body with the piston assembled, the light from the piston is used as a backlight at the time of inspecting the syringe body by causing the piston disposed inside the inspection portion to emit light. be able to.

  As described above, in the appearance inspection method according to claim 1 of the present invention, the material disposed on the back side of the inspection location is caused to emit light, so that the light from this material is used as a backlight at the time of inspection. Can do.

  For this reason, when there is a crack inside the inspection location, since the optical path of light from the substance is changed by the crack, it is possible to inspect abnormalities such as chipping and cracking occurring inside from the appearance. it can.

  And the light from this substance can be used as a backlight by emitting light from the substance arranged on the back side of the inspection location. For this reason, because of the structure in which different substances are provided on the back side of the inspection location, the internal state is inspected even if it is an inspection target that cannot be expected to transmit to the surface side even if light is applied from the back side of the inspection location. Can

  Furthermore, compared with the case where the inspection is performed by applying light from the surface side, the surface reflection of light can be prevented, and the inspection can be facilitated.

  Further, in the appearance inspection method according to claim 2, the substance disposed on the back side of the inspection location is composed of a light emitting substance that emits light when irradiated with ultraviolet rays, and the substance is caused to emit light by irradiating the substance with ultraviolet rays. Can do.

  For this reason, the state inside the inspection object can be inspected by, for example, imaging the inspection portion in a state where the substance is irradiated with ultraviolet rays.

  Further, in the appearance inspection method according to claim 3, the light from the piston can be used as a backlight at the time of inspecting the syringe body by causing the piston mounted on the syringe body to emit light. .

  For this reason, unlike the inspection method in which the light from the illumination is applied for inspection, the light from the illumination is not blocked by the piston, so that the syringe body can be inspected with the piston assembled.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram showing an appearance inspection apparatus 1 according to the present embodiment. The appearance inspection apparatus 1 is an apparatus for inspecting the syringe 2 in a set state, and is configured so that the appearance inspection method of the present invention can be performed.

  That is, the syringe 2 includes a syringe main body 11 that is an object to be inspected, and a piston 12 that is inserted into the syringe main body 11, and a chemical solution 13 is accommodated in the syringe main body 11. A cap 15 is attached to the needle connecting portion 14 at the distal end of the syringe body 11, and the piston 12 is inserted into the proximal end opening 16 of the syringe body 11.

  Thus, the syringe body 11 is held in a state where the drug solution 13 is accommodated, and the assembled syringe 2 is formed.

  The syringe main body 11 is formed in a cylindrical container shape using colorless and transparent glass, and a flange portion 21 extending sideways is integrally formed at the proximal end of the syringe main body 11. The piston 12 is arranged on the inner side 22 of the flange portion 21, and the tip of the piston 12, which is a different substance, is provided on the back side of the flange portion 21 that is an inspection point, that is, on the inner side 22 of the syringe body 11. The part is arranged.

  The syringe body 11 is fitted with a resin ring member 31, and the ring member 31 is fixed in contact with the flange portion 21. Folding-type wings 32 and 32 that are unfolded and used are rotatably supported on the ring member 31. By extending the wings 32 and 32 to the side, a finger hook can be formed during use. It is configured as follows.

  The piston 12 is formed in a cylindrical shape with an opaque synthetic resin, and a large-diameter operation portion 41 that is operated at the time of use is integrally formed at the base end of the piston 12. The synthetic resin that forms the piston 41 contains an ultraviolet light emitting component that emits light when irradiated with ultraviolet light, and the piston 12 is configured to emit light when irradiated with ultraviolet light.

  As a result, the piston 12 constitutes a luminescent substance that emits light when irradiated with ultraviolet rays, and is disposed on the back side of the flange portion 21 of the syringe body 11 that is an inspection location, and is made of a glass syringe body 11. Consists of a substance formed of a different synthetic resin.

  The appearance inspection apparatus 1 includes a stage 51 on which the syringe 2 is set, and an ultraviolet irradiation device 53 is provided above the setting position 52 of the stage 51 on which the syringe is set.

  The ultraviolet irradiation device 53 is formed in a circular ring shape, and ultraviolet light emitting diodes 61 are arranged in the ultraviolet irradiation device 53 along the peripheral edge. Each of the ultraviolet light emitting diodes 61,... Is disposed toward the piston 12 of the syringe 2 in a state where the syringe 2 is set at the set position 52 of the stage 51. Are configured to irradiate the entire circumferential surface of the piston 12.

  Thereby, it is comprised so that the said piston 12 can be light-emitted by applying the ultraviolet-ray 62 from the said ultraviolet irradiation device 53 to the said piston 12, The said flange part 21 which is an inspection location in this light emission state is comprised. It is comprised so that it can test | inspect from the outer peripheral part which is the surface side.

  A plurality of cameras 71,... Are arranged on the outer peripheral portion of the setting position 52 of the stage 51, and the flange portion 21 of the syringe main body 11 is in a state where the syringe 2 is set on the stage 51. An image is picked up from the side by the cameras 71,... And the peripheral surface of the flange portion 21 can be picked up by the cameras 71,.

  The cameras 71,... Are connected to an image processing device 81 configured by a personal computer or the like, and the images acquired by the cameras 71,. By this, it is comprised so that the state of the said flange part 21 which is an inspection location can be test | inspected from an outer surface side.

  In the above configuration, when inspecting the syringe 2 in which the piston 12 is assembled to the syringe body 11, the syringe 2 is set at the setting position 52 of the stage 51, and the ultraviolet light emitting diodes 61 of the ultraviolet irradiation device 53 are set. By illuminating, the ultraviolet rays 62 from the respective ultraviolet light emitting diodes 61,... Are irradiated to the piston 12 of the syringe 2 set at the set position 52.

  At this time, the synthetic resin forming the piston 12 includes an ultraviolet light emitting component that emits light when irradiated with the ultraviolet light 62, and the ultraviolet light emitting diode 61,. The piston 12 can be made to emit light by irradiating the ultraviolet rays 62 from.

  Thereby, the inner side 22 of the syringe main body 11, that is, the piston 12 disposed on the back side of the flange portion 21 that is an inspection location can be caused to emit light. Can shine from.

  For this reason, the light from the piston 12 can be used as a backlight at the time of inspection, and an image of the flange portion 21 as an inspection point is acquired from the outer peripheral portion by each camera 71,. By performing image processing on these acquired images with the image processing device 81, the state inside the flange portion 21 of the syringe main body 11 can be inspected.

  Specifically, as shown in FIG. 2, when an abnormality such as a chip or crack 101 exists in the flange portion 21, the optical path of light from the piston 12 is blocked by the crack 101, and the camera In the acquired image 102 acquired at 71, an image showing the crack 101 is displayed inside the flange portion 21. Thus, by performing image processing on the acquired image 102 with the image processing device 81, it is possible to inspect the occurrence of chipping, cracks 101, and the like inside the flange portion 21 from the appearance.

  Then, by emitting light from the piston 12 that is inserted into the syringe body 11 and disposed on the back side of the flange portion 21, light from the piston 12 can be used as a backlight. Even if it is the syringe 2 in which the piston 12 that is not expected to transmit to the surface side even if the illumination light is applied from the back side of the flange portion 21 due to the structure in which the piston 12 that is a different substance is arranged on the back side, The state inside the flange portion 21 can be inspected.

  Furthermore, compared with the case where inspection is performed by applying light from the outer peripheral portion of the flange portion 21, it is possible to prevent surface reflection of light and facilitate inspection and image processing.

  In the present embodiment, the case of inspecting the syringe 2 has been described as an example. However, the present invention is not limited to this and may be used for inspection of other articles.

  In addition, the shape of the inspection object is not limited to a cylindrical shape, and may be a planar object provided with a light emitting substance on the back side. In this case, the inside of the planar object can be inspected from the surface side of the planar object by causing the substance provided on the back surface side to emit light.

It is a figure which shows one embodiment of this invention. It is a figure which shows the acquired image of the embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Appearance inspection apparatus 2 Syringe 11 Syringe main body 12 Piston 22 Inside 62 Ultraviolet rays 101 Crack

Claims (3)

In the appearance inspection method for inspecting a transparent inspection object in which different substances are arranged on the back side of the inspection location,
An appearance inspection method characterized by causing the substance to emit light and inspecting the state of the inspection portion from the surface side. The substance is composed of a luminescent substance that emits light when irradiated with ultraviolet rays,
The appearance inspection method according to claim 1, wherein the substance is made to emit light by irradiating the substance with ultraviolet rays.   The appearance inspection method according to claim 1, wherein the inspection object is a syringe body formed in a cylindrical shape, and the substance is a piston inserted in the syringe body.

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