JP6925922B2 - Wire harness inspection system - Google Patents

Description

The present invention relates to a wire harness inspection system.

As a conventional wire harness inspection system, for example, Patent Document 1 discloses an appearance inspection device that has a long and complicated shape and inspects the appearance of a workpiece assembled by attaching a wide variety of parts. .. This visual inspection device includes an assembly drawing board, a camera, a position shift correction mark, a position shift correction means, a detection processing means, and the like. The assembly drawing board is for assembling the work, and the position where each component constituting the work should be arranged is determined. The camera takes a picture of the assembled work on the assembly drawing board for each of a plurality of shooting areas divided in advance. The position shift correction mark is arranged at a position that does not interfere with the shooting of the work in each shooting area in which the assembly drawing board is divided into a plurality of parts, and serves as a reference point for correcting the position shift of the assembly drawing board. The position shift correction means captures an image taken by the camera, detects a position shift correction mark in the shooting area, and sets a detection area with the detected position shift correction mark as a reference point to set the position of the assembly drawing board. Correct the deviation. Then, the detection processing means processes the image data of the work in the inspection area set by the misalignment correction means, compares this processed data with the reference data of the photographing area stored in advance, and compares the image data of the photographing area. Detects the presence or absence of defects such as missing components of the workpiece existing inside.

Japanese Unexamined Patent Publication No. 07-103910

By the way, the visual inspection apparatus described in Patent Document 1 described above has room for further improvement in terms of more appropriate inspection in various situations, for example.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a wire harness inspection system capable of appropriately inspecting an inspection site of a wire harness.

In order to achieve the above object, the wire harness inspection system according to the present invention includes an inspection table on which the wire harness is placed on the mounting surface and an inspection site of the wire harness mounted on the mounting surface described above. A mirror surface member that reflects a mirror image of the above-mentioned mounting surface side, an imaging unit that images a mirror image of the inspection site reflected on the mirror surface member on the previously described mounting surface side, and a pre-described placement of the inspection site that is imaged by the imaging unit. It is characterized by including an inspection unit that inspects the inspection site based on a mirror image of the surface side.

Further, in the wire harness inspection system, the inspection unit inspects the color of the exterior material of the inspection site based on the image of the mirror image of the inspection site on the previously described surface side captured by the imaging unit. When the color of the exterior material matches the preset color, it is determined that the inspection of the inspection site is appropriate, and when the color of the exterior material does not match the preset color, the inspection of the inspection site is inspected. Can be determined to be inappropriate.

Further, in the wire harness inspection system, the inspection site is described in advance as compared with the first inspection site, which can be inspected based on the image on the side opposite to the above-mentioned mounting surface side, and the first inspection site. The mirror surface member includes a second inspection site that is difficult to inspect in the image on the side opposite to the mounting surface side, the mirror surface member reflects a mirror image of the previously described mounting surface side of the second inspection site, and the imaging unit is the mirror surface member. While the mirror image of the second inspection site on the pre-described surface side is imaged, the side of the first inspection site opposite to the pre-described surface side is imaged without the mirror surface member, and the inspection unit takes an image. The first inspection site is inspected based on the image on the side opposite to the previously described surface side of the first inspection site imaged by the imaging unit, and the second inspection site imaged by the imaging unit is inspected. The second inspection site can be inspected based on the image of the mirror image on the surface side described above.

In the wire harness inspection system according to the present invention, a mirror image of the inspection site of the wire harness on the mounting surface side is projected on the mirror surface member. Then, in the wire harness inspection system, the image pickup unit captures an image of a mirror image on the mounting surface side of the inspection portion reflected on the mirror surface member. With this configuration, the wire harness inspection system can inspect the inspection site based on the image of the mirror image on the mounting surface side of the inspection site by the inspection section, so that the inspection site is on the side opposite to the mounting surface side of the inspection site. It is possible to perform inspections that are difficult to do with images. As a result, the wire harness inspection system has an effect that the inspection site of the wire harness can be properly inspected.

FIG. 1 is a block diagram showing a schematic configuration of an inspection system according to an embodiment. FIG. 2 is a mock drawing illustrating a first inspection site and a second inspection site in the inspection system according to the embodiment. FIG. 3 is a mock diagram illustrating imaging of the first inspection site in the inspection system according to the embodiment. FIG. 4 is a mock diagram illustrating imaging of a second inspection site in the inspection system according to the embodiment. FIG. 5 is a flowchart showing an example of control in the inspection system according to the embodiment.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings. The present invention is not limited to this embodiment. In addition, the components in the following embodiments include those that can be easily replaced by those skilled in the art, or those that are substantially the same.

[Embodiment]
The inspection system 1 as the wire harness inspection system shown in FIG. 1 is a system that inspects the wire harness 100 used for wiring electrical components in a vehicle or the like in various ways. Here, the inspection system 1 will be described as inspecting the color of the exterior material of the wire harness 100.

Here, first, the wire harness 100 to be inspected by the inspection system 1 will be described. For example, the wire harness 100 bundles a plurality of electric wires 101 used for power supply and signal communication to form an assembly component for connection between devices mounted on a vehicle, and each of the plurality of electric wires 101 is connected by a connector 104. It is designed to be connected to a device. The wire harness 100 includes, for example, a plurality of electric wires 101, a corrugated tube 102 as an exterior material, a winding tape 103 as an exterior material, a connector 104, and the like. The wire harness 100 bundles and aggregates a plurality of electric wires 101, covers the bundled electric wires 101 with a corrugated tube 102 or a winding tape 103, and has a connector 104 as a connecting portion at the end of the bundled electric wires 101. It will be provided. Further, the wire harness 100 includes a plurality of identification tapes 105. The identification tape 105 constitutes a part of the exterior material by being wound around a predetermined position of the corrugated tube 102, the winding tape 103, or the like. The identification tape 105 is used as a mark for attachment portions of various members and for fixing a fixture such as a clamp 106. Here, the fixture such as the clamp 106 is for fixing the wire harness 100 at a predetermined position on the wiring path on the vehicle side. The identification tape 105 is wound around a portion of the corrugated tube 102, the winding tape 103, or the like where a fixture such as the clamp 106 is provided. The identification tape 105 is composed of a tape having a predetermined color so as to be visually distinguishable from the corrugated tube 102, the wound tape 103, and the like. In addition, the wire harness 100 may further include a grommet, an electrical connection box (junction box / relay box), a protector as an exterior material, and the like.

Then, the inspection system 1 of the present embodiment inspects the presence / absence of the identification tape 105 having a predetermined color and the color of the identification tape 105 at the predetermined inspection site 107 of the wire harness 100. Here, the inspection site 107 corresponds to a site in the wire harness 100 where the identification tape 105 should be provided, in other words, a site for attaching a fixture such as a clamp 106. The inspection site 107 is geometrically determined in the final shape of the wire harness 100 according to the site where the fixture such as the clamp 106 is provided. That is, the inspection system 1 inspects whether or not a preset color identification tape 105 is provided at the attachment site of the fixture such as the clamp 106.

Specifically, the inspection system 1 includes an inspection table 2, a receiving unit 3, an imaging unit 4, a display unit 5, and an arithmetic unit 6.

The inspection table 2 is for placing the wire harness 100 to be inspected. The inspection table 2 is formed as a rectangular plate-shaped plate material by, for example, wood, a resin material, a metal material, or the like. The inspection table 2 places the wire harness 100 on the mounting surface 21. The mounting surface 21 is formed along the X direction and the Y direction. Here, the X direction is a direction along the horizontal direction, and the Y direction is a direction orthogonal to the X direction and intersecting the horizontal direction. The mounting surface 21 is formed in a substantially rectangular shape in which the side along the X direction is the long side and the side along the Y direction is the short side. The mounting surface 21 is inclined with respect to the vertical direction and the horizontal direction so that various operations on the wire harness 100 can be easily performed. The inspection system 1 inspects the wire harness 100 mounted on the mounting surface 21 of the inspection table 2. Further, the inspection table 2 is provided with a plurality of wheels 22 at the lower portion in the vertical direction via a support frame or the like. In the inspection table 2, for example, a plurality of units are sequentially conveyed in the X direction by an inspection table transfer device D1 such as a so-called conveyor, and while being circulated in the line at a predetermined speed, each process such as assembly and inspection of parts is performed. .. The inspection table 2 may also be called a jig plate.

The receiving portion 3 receives the wire harness 100 on the mounting surface 21 of the inspection table 2. The receiving portion 3 is provided on the mounting surface 21 of the inspection table 2. As the receiving portion 3, for example, a fork or the like that floats and supports each portion of the wire harness 100 from the mounting surface 21 can be used (see also FIG. 2 and the like). A plurality of receiving portions 3 are provided, and each receives a predetermined portion of the wire harness 100 placed on the inspection table 2. The position where the plurality of receiving portions 3 are provided on the inspection table 2 is geometrically determined according to the final shape of the wire harness 100 mounted on the mounting surface 21.

The imaging unit 4 captures the appearance of the wire harness 100 mounted on the mounting surface 21. The inspection system 1 also includes a lighting unit that performs lighting necessary for imaging by the imaging unit 4. Here, the imaging unit 4 captures a color image capable of grasping the color of the appearance of the wire harness 100. As the image pickup unit 4, for example, a CCD camera, a CMOS camera, or the like can be used. The imaging unit 4 is provided so as to be relatively movable along the X direction and the Y direction with respect to the wire harness 100 mounted on the mounting surface 21. The inspection system 1 of the present embodiment supports and drives the imaging unit as a configuration for relatively moving the wire harness 100 mounted on the mounting surface 21 and the imaging unit 4 along the X direction and the Y direction. It includes a mechanism 41 and the above-mentioned inspection table transfer device D1. The image pickup unit support drive mechanism 41 is configured to include a guide rail, a bracket, a drive motor, and the like, and when these operate in cooperation with each other, the image pickup unit 4 is supported and the image pickup unit 4 is moved along the Y direction. .. As a result, the image pickup unit support drive mechanism 41 can relatively move the wire harness 100 mounted on the mounting surface 21 and the image pickup unit 4 along the Y direction. Further, unlike the inspection table 2 which can move along the X direction, the imaging unit support drive mechanism 41 is fixedly provided in the X direction via various support structures. The inspection table transport device D1 moves the inspection table 2 along the X direction with respect to the image pickup unit support drive mechanism 41 and the image pickup unit 4 fixedly provided in the X direction as described above. As a result, the inspection table transport device D1 can relatively move the wire harness 100 mounted on the mounting surface 21 and the imaging unit 4 along the X direction. The image pickup unit 4 and the image pickup unit support drive mechanism 41 are electrically connected to the arithmetic unit 6 via a cable or the like, and various signals are transmitted to and received from the arithmetic unit 6 to control the operation. The imaging unit 4 and the imaging unit support drive mechanism 41 may transmit and receive various signals to and from the arithmetic unit 6 by wireless communication without using a cable or the like to control the operation.

The display unit 5 displays various image information including the inspection result in the inspection system 1. As the display unit 5, for example, various types of monitor devices such as a thin liquid crystal display, a plasma display, and an organic EL display can be used. The display unit 5 is electrically connected to the arithmetic unit 6 via a cable or the like, and transmits and receives various signals to and from the arithmetic unit 6 to control the operation. The display unit 5 may transmit and receive various signals to and from the arithmetic unit 6 by wireless communication without using a cable or the like to control the operation.

The arithmetic unit 6 comprehensively controls each part of the inspection system 1. The arithmetic unit 6 includes, for example, an electronic circuit mainly composed of a well-known microcomputer including a CPU, a ROM, a RAM, and an interface. The arithmetic unit 6 can exchange various signals with and from the image pickup unit 4, the image pickup unit support drive mechanism 41, the display unit 5, and the inspection table transfer device D1. More specifically, the arithmetic unit 6 is functionally conceptually configured to include a control unit 61 and an inspection unit 62.

The control unit 61 is a part that controls the operation of the image pickup unit 4, the image pickup unit support drive mechanism 41, the display unit 5, and the like. The control unit 61 controls the image pickup unit 4 and the image pickup unit support drive mechanism 41 to image the inspection portion 107 of the wire harness 100, and stores the captured image in the storage unit. At this time, the control unit 61 synchronizes with the movement of the inspection table 2 along the X direction based on, for example, the position information of the inspection table 2 transmitted from the inspection table transfer device D1, various position sensors / switches, and the like. The imaging unit 4 is moved along the Y direction, and a plurality of inspection sites 107 are imaged in order. The control unit 61 may store the image captured by the imaging unit 4 in the internal storage unit of the arithmetic unit 6, or may store it in an external server (for example, higher-level device D2 or the like described later) of the arithmetic unit 6. It may be stored in a storage device. Further, when the control unit 61 stores the image captured by the image pickup unit 4, the control unit 61 also includes product number information for identifying the wire harness 100 to be inspected, position information of the inspection site 107, date and time information, and the like. It may be associated and stored. Further, the control unit 61 controls the display unit 5 to display the inspection result by the inspection unit 62, which will be described later.

The inspection unit 62 inspects the inspection site 107 based on the image of the inspection site 107 imaged by the image pickup unit 4. The inspection unit 62 reads out an image of the inspection site 107 imaged by the image pickup unit 4 and stored in the storage unit, and inspects the color of the exterior material of the inspection site 107 based on the read-out image. The inspection unit 62 determines that the inspection of the inspection site 107 is appropriate when the color of the exterior material of the inspection site 107 matches the preset color. As the preset color information, the information stored in the storage unit in advance is read out and used. Here, the inspection unit 62 determines that the inspection of the inspection site 107 is appropriate when the color of the identification tape 105 provided as the exterior material of the inspection site 107 matches the preset color. On the other hand, the inspection unit 62 determines that the inspection of the inspection site 107 is inappropriate when the color of the exterior material of the inspection site 107 does not match the preset color. That is, here, the inspection unit 62 refers to the inspection site 107 when the identification tape 105 is not provided as the exterior material on the inspection site 107 or when the identification tape 105 different from the preset color is provided. Judge that the inspection is inappropriate.

Then, as described above, the control unit 61 controls the display unit 5 and causes the display unit 5 to display the inspection result by the inspection unit 62. For example, the control unit 61 causes the display unit 5 to display a diagram or an icon schematically showing the final shape of the wire harness 100. Then, for example, the control unit 61 displays the inspection result by sequentially switching the color of the icon at the position corresponding to the inspection site 107 determined by the inspection unit 62 to be appropriate for the inspection. Further, for example, when the inspection unit 62 determines that the inspection of any of the inspection sites 107 is inappropriate, the control unit 61 causes the display unit 5 to display the fact and the inspection by the inspection table transport device D1. Stop the transportation of the table 2. Further, in this case, the control unit 61 may notify the host device D2 or the like located at a position away from the inspection table 2 that the inspection of any of the inspection sites 107 is inappropriate.

Here, in the present embodiment, as shown in FIGS. 1 and 2, the inspection site 107 to be inspected by the inspection unit 62 includes the first inspection site 107A and the second inspection site 107B. I'm out. The first inspection site 107A is a site that can be inspected based on the image on the side opposite to the mounting surface 21 side. On the other hand, the second inspection site 107B is a site that is difficult to inspect in the image on the side opposite to the mounting surface 21 side as compared with the first inspection site 107A. Typically, the first inspection portion 107A is a portion where the color of the base material around which the identification tape 105, which is an exterior material, is wound does not show off on the side opposite to the mounting surface 21 side. On the other hand, the second inspection site 107B is a site where the color of the base material around which the identification tape 105, which is an exterior material, is wrapped is reflected on the side opposite to the mounting surface 21 side. Therefore, the first inspection site 107A In comparison with the above, the image on the side opposite to the mounting surface 21 side tends to be difficult to inspect. Here, the first inspection site 107A is, for example, a site where the clamp 106 is not provided and the identification tape 105 is provided alone, and the fixing piece 106a of the clamp 106 is connected to the corrugated tube 102 and the winding tape 103 by the identification tape 105. It is a part or the like that is positioned and fixed on the mounting surface 21 side of the above. Therefore, in the first inspection site 107A, the color of the base material around which the identification tape 105, which is the exterior material, is wound tends not to show off on the side opposite to the mounting surface 21 side. On the other hand, the second inspection site 107B is a site or the like where the fixing piece 106a of the white clamp 106 is positioned and fixed on the side opposite to the mounting surface 21 side of the corrugated tube 102 and the winding tape 103 by the identification tape 105. be. Therefore, in the second inspection site 107B, the white color of the fixing piece 106a of the clamp 106, which is the base material around which the identification tape 105 is wound, tends to show off whitish on the side opposite to the mounting surface 21 side. The first inspection site 107A has a curved surface on the side opposite to the mounting surface 21 side so that the identification tape 105 follows the outer shape of the corrugated tube 102 and the winding tape 103 (see FIG. 3). On the other hand, the second inspection site 107B has a flat surface shape on the side opposite to the mounting surface 21 side so that the identification tape 105 follows the outer shape of the flat portion of the fixed piece 106a of the clamp 106 (FIG. 4). reference). Therefore, if the image pickup unit 4 attempts to image the second inspection site 107B from the side opposite to the mounting surface 21 side, the second inspection site 107B is different from the first inspection site 107A having a curved surface on the side opposite to the mounting surface 21 side. In comparison, the angle of the flat surface-like portion of the imaging unit 4 with respect to the optical axis tends to vary. In this case, the second inspection site 107B is easily imaged by the imaging unit 4 as compared with the first inspection site 107A because the angle of the flat surface-like portion with respect to the optical axis of the imaging unit 4 tends to vary. Reflection unevenness, color unevenness, etc. tend to occur in the image. In this respect as well, the second inspection site 107B tends to be difficult to inspect in the image on the side opposite to the mounting surface 21 side as compared with the first inspection site 107A.

On the other hand, as shown in FIGS. 1, 2, and 4, the inspection system 1 of the present embodiment is provided with a mirror surface member 7 in the vicinity of the second inspection site 107B, and is imaged through the mirror surface member 7. A more appropriate inspection is realized by inspecting the second inspection site 107B based on the image.

Specifically, the mirror surface member 7 reflects an inspection site 107 of the wire harness 100 mounted on the mounting surface 21, here, a mirror image of the second inspection site 107B on the mounting surface 21 side. The mirror surface member 7 is fixed on the mounting surface 21 in the vicinity of the second inspection site 107B. The mirror surface member 7 is arranged in a space created by the wire harness 100 being lifted and supported from the mounting surface 21 by the receiving portion 3. The mirror surface member 7 has a reflecting surface 7a that totally reflects visible light. The mirror surface member 7 is provided so that the reflecting surface 7a is located between the wire harness 100 and the mounting surface 21 in the normal direction orthogonal to the mounting surface 21. The mirror surface member 7 totally reflects the visible light reflected on the mounting surface 21 side of the second inspection site 107B to the imaging unit 4 side opposite to the mounting surface 21 side, so that the second inspection site 107B A mirror image on the mounting surface 21 side is projected.

Then, as shown in FIG. 3, the above-mentioned imaging unit 4 has a mirror surface member 7 on the side of the first inspection site 107A of the inspection site 107 opposite to the mounting surface 21 side of the first inspection site 107A. Image without intervention. On the other hand, as shown in FIG. 4, the imaging unit 4 displays a mirror image of the second inspection site 107B on the mounting surface 21 side reflected on the reflection surface 7a of the mirror surface member 7 at the second inspection site 107B of the inspection sites 107. Take an image.

Then, the inspection unit 62 inspects the first inspection site 107A based on the image on the side opposite to the mounting surface 21 side of the first inspection site 107A imaged by the imaging unit 4. That is, when the inspection unit 62 matches the color of the identification tape 105 of the first inspection site 107A with the preset color based on the image on the side opposite to the mounting surface 21 side of the first inspection site 107A. It is determined that the inspection of the first inspection site 107A is appropriate. Further, when the inspection unit 62 does not match the color of the identification tape 105 of the first inspection site 107A with the preset color based on the image on the side opposite to the mounting surface 21 side of the first inspection site 107A. It is determined that the inspection of the first inspection site 107A is inappropriate.

On the other hand, the inspection unit 62 inspects the second inspection site 107B based on the image of the mirror image on the mounting surface 21 side of the second inspection site 107B imaged by the imaging unit 4. That is, when the inspection unit 62 matches the color of the identification tape 105 of the second inspection site 107B with the preset color based on the image of the mirror image of the second inspection site 107B on the mounting surface 21 side, the inspection unit 62 concerned. It is determined that the inspection of the second inspection site 107B is appropriate. Further, the inspection unit 62 is concerned when the color of the identification tape 105 of the second inspection site 107B does not match the preset color based on the image of the mirror image of the second inspection site 107B on the mounting surface 21 side. It is determined that the inspection of the second inspection site 107B is inappropriate.

Next, an example of control including inspection processing in the inspection system 1 will be described with reference to the flowchart of FIG. The control including the inspection process is realized by executing various arithmetic processes by the arithmetic unit 6.

First, the control unit 61 of the arithmetic unit 6 moves the imaging unit 4 to the imaging position of the inspection site 107 to be inspected (step ST1). The control unit 61 sets the inspection site 107 to be inspected in a predetermined order, and moves the imaging unit 4 accordingly. The control unit 61 moves the imaging unit 4 along the Y direction while synchronizing with the movement of the inspection table 2 along the X direction based on the position information of the inspection table 2 transmitted from the inspection table transfer device D1 and the like. , The imaging unit 4 is positioned at the imaging position of the inspection site 107 to be inspected. In this case, if the inspection target is the first inspection site 107A, the control unit 61 is located at a position where the side opposite to the mounting surface 21 side of the first inspection site 107A can be imaged without using the mirror surface member 7. The imaging unit 4 is moved. On the other hand, if the inspection target is the second inspection site 107B, the control unit 61 is located at a position where it can image a mirror image of the second inspection site 107B on the mounting surface 21 side reflected on the reflection surface 7a of the mirror surface member 7. Move 4.

Next, the control unit 61 controls the imaging unit 4, captures an image of the inspection site 107, and stores the captured image in the storage unit (step ST2). In this case, if the inspection target is the first inspection site 107A, the imaging unit 4 images the side of the first inspection site 107A opposite to the mounting surface 21 side without using the mirror surface member 7 (see FIG. 3). ). On the other hand, if the inspection target is the second inspection site 107B, the imaging unit 4 captures a mirror image of the second inspection site 107B on the mounting surface 21 side reflected on the reflection surface 7a of the mirror surface member 7 (see FIG. 4).

Next, the inspection unit 62 of the arithmetic unit 6 inspects the inspection site 107 to be inspected based on the image captured by the image pickup unit 4 in step ST2 (step ST3). In this case, if the inspection target is the first inspection site 107A, the inspection unit 62 is based on the image on the side opposite to the mounting surface 21 side of the first inspection site 107A imaged by the imaging unit 4. The inspection site 107A is inspected. On the other hand, if the inspection target is the second inspection site 107B, the inspection unit 62 will use the second inspection site 107B based on the mirror image image of the second inspection site 107B on the mounting surface 21 side captured by the imaging unit 4. To inspect.

Next, the inspection unit 62 determines whether or not the inspection in step ST3 is appropriate (step ST4). The inspection unit 62 determines that the inspection of the inspection site is appropriate when the color of the identification tape 105 of the inspection site 107 matches the preset color. On the other hand, the inspection unit 62 determines that the inspection of the inspection site 107 is inappropriate when the color of the identification tape 105 of the inspection site 107 does not match the preset color.

When the inspection unit 62 determines that the inspection is appropriate (step ST4: Yes), the control unit 61 determines whether or not the inspection of all the inspection sites 107 has been completed (step ST5). When the control unit 61 determines that the inspection of all the inspection sites 107 has not been completed (step ST5: No), the control unit 61 returns to the process of step ST1 and performs the subsequent processes for the next inspection site 107 to be inspected. To execute. When the control unit 61 determines that the inspection of all the inspection sites 107 has been completed (step ST5: Yes), the control unit 61 ends the inspection of the wire harness 100 and proceeds to the next inspection of the wire harness 100.

When the inspection unit 62 determines in step ST4 that the inspection is inappropriate (step ST4: No), the control unit 61 causes the display unit 5 to indicate that the inspection is inappropriate and also displays the inspection table transfer device. The transportation of the inspection table 2 by D1 is stopped. At the same time, the control unit 61 notifies the host device D2 and the like that the inspection of the inspection site 107 is inappropriate (step ST6), and temporarily ends the inspection of the wire harness 100.

In the inspection system 1 described above, a mirror image of the inspection portion 107 (here, the second inspection portion 107B) of the wire harness 100 on the mounting surface 21 side is projected on the mirror surface member 7. Then, in the inspection system 1, the image pickup unit 4 captures an image of a mirror image on the mounting surface 21 side of the inspection site 107 reflected on the mirror surface member 7. With this configuration, the inspection system 1 can inspect the inspection site 107 based on the image of the mirror image on the mounting surface 21 side of the inspection site 107 by the inspection unit 62, so that the inspection site 107 can be inspected on the mounting surface 21 side of the inspection site 107. It is possible to perform an inspection that is difficult to do with the image on the opposite side. As a result, the inspection system 1 can properly inspect the inspection site 107 of the wire harness 100.

Here, the inspection system 1 described above is the exterior material of the inspection site 107 based on the image of the mirror image of the inspection site 107 (here, the second inspection site 107B) on the mounting surface 21 side by the inspection unit 62. The color of a certain identification tape 105 can be properly inspected.

More specifically, in the inspection system 1 described above, as the inspection site 107, even when the first inspection site 107A and the second inspection site 107B are mixed, each inspection site 107 of the wire harness 100 is used. It can be inspected properly. That is, the inspection system 1 can inspect the first inspection site 107A based on the image on the side opposite to the mounting surface 21 side in the first inspection site 107A. On the other hand, in the inspection system 1, the mounting surface 21 side reflected on the mirror surface member 7 in the second inspection site 107B, which is difficult to inspect in the image on the side opposite to the mounting surface 21 side as compared with the first inspection site 107A. The inspection of the second inspection site 107B can be performed based on the image of the mirror image of. As a result, in the inspection system 1, for example, in the second inspection site 107B, the color of the base material of the identification tape 105, for example, the color of the fixing piece 106a of the clamp 106 is reflected on the side opposite to the mounting surface 21 side. However, the inspection of the second inspection site 107B can be properly performed. Further, in the inspection system 1, for example, in the second inspection site 107B, the side opposite to the mounting surface 21 side is flat, and the angle of the flat surface with respect to the optical axis of the imaging unit 4 is likely to vary. Even when uneven reflection or uneven color is likely to occur, the second inspection site 107B can be properly inspected.

The wire harness inspection system according to the above-described embodiment and modification of the present invention is not limited to the above-mentioned embodiment and modification, and various modifications can be made within the scope of the claims.

In the above description, the inspection system 1 has the image pickup unit support drive mechanism 41 and the inspection table transfer device as a configuration for relatively moving the wire harness 100 and the image pickup unit 4 along the X direction and the Y direction. Although it has been described as being configured to include D1, the present invention is not limited to this. The configuration for relative movement may be configured by various known devices.

In the above description, the inspection unit 62 has been described as inspecting the color of the exterior material (identification tape 105) of the inspection portion 107 based on the image captured by the imaging unit 4, but the inspection portion 107 is not limited to this. It may be inspected other than the color of the exterior material of. For example, the inspection system 1 may inspect the color of accessories such as the connector 104, the grommet, the electric junction box, and the protector assembled to the wire harness 100, and is not limited to the color, and the presence or absence of the accessory is not limited to the color. , The shape, gloss, etc. may be inspected.

In the above description, the inspection site 107 to be inspected by the inspection unit 62 has been described as including the first inspection site 107A and the second inspection site 107B, but the present invention is not limited to this. The inspection site 107 may include at least one second inspection site 107B, in other words, all may be the second inspection site 107B. Further, the inspection system 1 inspects all the inspection sites 107 based on the image of the mirror image on the mounting surface 21 side reflected on the mirror surface member 7 without distinguishing between the first inspection site 107A and the second inspection site 107B. You may do so.

In the above description, the control unit 61 and the inspection unit 62 have been described as being shared by the arithmetic unit 6, but the present invention is not limited to this, and the control unit 61 and the inspection unit 62 are configured as separate devices from each other so that various signals can be exchanged with each other. May be done.

1 Inspection system (wire harness inspection system)
2 Inspection table 4 Imaging unit 7 Mirror surface member 21 Mounting surface 41 Imaging unit support drive mechanism 62 Inspection unit 100 Wire harness 105 Identification tape (exterior material)
107 Inspection site 107A First inspection site 107B Second inspection site

Claims (3)

An inspection table on which the wire harness is placed on the mounting surface,
A mirror surface member that reflects a mirror image of the inspection site of the wire harness placed on the previously described mounting surface on the previously described mounting surface side, and
An imaging unit that captures a mirror image of the inspection site on the previously described surface side reflected on the mirror surface member, and an imaging unit.
It is characterized by including an inspection unit that inspects the inspection site based on an image of a mirror image of the inspection site on the previously described surface side captured by the imaging unit.
Wire harness inspection system. The imaging unit captures a color image capable of grasping the color of the appearance of the wire harness.
The measurement part, based on the color image of a mirror image of the mounting surface side of the testing area imaged by the imaging unit, check the color in the color image of the outer package of the examination site, the exterior material When the color in the color image of the above matches the preset color, it is determined that the inspection of the inspection site is appropriate, and when the color of the exterior material in the color image does not match the preset color. Judging that the inspection of the inspection site is inappropriate,
The wire harness inspection system according to claim 1. The inspection site is a first inspection site that can be inspected based on an image on the side opposite to the previously described mounting surface side, and an image on the side opposite to the previously described mounting surface side as compared with the first inspection site. Including the second inspection site, which is difficult to inspect
The mirror surface member reflects a mirror image of the second inspection site on the previously described surface side.
The imaging unit captures a mirror image of the second inspection site on the previously described mounting surface side reflected on the mirror surface member, while the side opposite to the previously described mounting surface side of the first inspection site does not pass through the mirror surface member. Imaged on
The inspection unit inspects the first inspection site based on an image on the side opposite to the previously described surface side of the first inspection site imaged by the imaging unit, and the first inspection site imaged by the imaging unit. 2 The second inspection site is inspected based on the image of the mirror image on the side of the previously described surface of the inspection site.
The wire harness inspection system according to claim 1 or 2.

Images