JP2005337926A - Test method and test device of press state of crimping terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a test method and test device of press state of a crimping terminal which shows clear outline of photographed data in the press part of the crimping terminal even with a change in covering color of an electric wire and color of a background object, and is capable of accurately and properly testing the press state in the press part of the crimping terminal. <P>SOLUTION: In the test method of press state of the crimping terminal 2, the press state of the crimping terminal attached to the end of electric wire 1 by pressing is tested by image processing. A press part illumination light 8 with a specific hue is cast on the press part 3 of the crimping terminal 2 and a background illumination light 10 with different hue from the press part illumination light 8 is cast on the background object 9 of the press part 3. The press part 3 and the background object 9 cast by those illumination lights 8 and 10 are photographed, and the photographed data are image-processed and position of the covering end 1c of the electric wire 1 in the press part 3 so as to test the quality of the press part 3. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a method and an apparatus for inspecting a crimping state of a crimping terminal that inspects a crimping state of a crimping terminal attached by crimping to an end of an electric wire from which a conductor has been exposed by peeling off a coating.

  When the crimp terminal is attached to the end of the electric wire, as shown in FIG. 5, the covering 1b at the end of the electric wire 1 is peeled to expose the conductor 1a of a predetermined length, and then the covering at the peeling end is provided. The outer peripheral surface of the exposed conductor 1a is covered with a covering barrel 2b and a conductor barrel 2a made of a highly conductive metal material, and is crimped and gripped from outside to form a crimped portion 3. ing. At this time, the covering end (stepped end portion of the covering 1b) 1c protrudes from the front edge of the covering barrel 2b to the conductor barrel 2a side by a predetermined length L, and the front edge of the covering barrel 2b and the conductor barrel 2a When the covering 1b of the electric wire 1 is crimped by the covering barrel 2b of the crimping terminal 2 so as to be positioned at an intermediate position with respect to the rear edge, the crimping terminal 2 is securely held by the end of the electric wire 1, and the electric wire 1 And the crimp terminal 2 can be maintained in a good conductive state.

  However, the covering end 1c of the electric wire 1 protrudes from the front edge of the covering barrel 2b of the crimping terminal 2 to be larger than the predetermined length L, and the covering 1b of the electric wire 1 is crimped by the conductor barrel 2a of the crimping terminal 2 ( If the covering end 1c of the electric wire 1 is retracted rearward from the covering barrel 2b of the crimp terminal 2 and the conductor 1a of the electric wire 1 is crimped by the covering barrel 2b of the crimp terminal 2 (defective neck hanging), etc. In this case, the crimping terminal 2 is not securely gripped by the end portion of the electric wire 1 and it is difficult to maintain a good conduction state between the electric wire 1 and the crimping terminal 2.

  Therefore, conventionally, the position of the coated end portion 1c of the electric wire 1 in the crimp portion 3 of the crimp terminal 2 crimped to the end portion of the electric wire 1 is detected by image processing, and the crimping state of the crimp terminal 2 is determined to be good or bad. There is a method to inspect. In the inspection method, after crimping the crimp terminal 2 on the end of the electric wire 1, the crimp terminal 2 is rotated 90 degrees around the axis of the electric wire 1 and turned sideways. When white light is projected from the sub-illumination means, the crimping portion 3 is illuminated from the front side and the back side, and the crimping portion 3 is imaged by an imaging means such as a TV camera or CCD, the contrast of the image data is increased. Then, the imaging data is image-processed by the image processing means, and the positions of the covering end 1c of the electric wire 1 and the covering barrel 2b of the crimping terminal 2 are detected from the luminance data of the pixel, thereby the crimping portion of the crimping terminal 2 No. 3 is inspected for good and bad crimped state (see Patent Document 1).

JP-A-5-272939 (paragraph numbers 0009 to 0011, 0017 to 0020 in FIGS. 1, 2, and 21 in the Detailed Description of the Invention)

  In the conventional method for inspecting the crimping state by image processing of the crimping terminal 2, the crimping part 3 of the crimping terminal 2 is illuminated by illumination from the main illumination means and the sub-illumination means, and the contrast of the imaging data of the crimping part 3 is increased. However, it is not easy to adjust the illuminance of the illumination from the auxiliary illumination means. That is, when the illuminance is suppressed, the contrast effect can hardly be obtained, and when the illuminance is increased, the entire crimped portion 3 appears black, the outline of the crimped portion 3 becomes unclear, and the covering end portion 1c of the electric wire 1 becomes unclear. This is because it becomes difficult to accurately detect the position of. For example, when the covering 1b of the electric wire 1 and the background body are white or a color close thereto, the contrast of the imaging data of the crimping portion 3 is desired even if the crimping portion 3 is illuminated by the main illumination means and the sub-illumination means. However, it is difficult to accurately detect the position of the covering end portion 1c of the electric wire 1 and the crimping state of the crimping portion 3 of the crimping terminal 2 cannot be accurately and accurately inspected. .

  The present invention was born in view of the above, and even if the coating color of the electric wire or the background color of the background body changes variously, the contour of the imaging data in the crimping part of the crimping terminal is clear and the contrast becomes large, and the crimping part of the crimping terminal It is an object of the present invention to provide a crimp terminal crimping state inspection method and an inspection apparatus capable of accurately and accurately inspecting the crimping state of the terminal.

  In order to achieve the above object, the invention described in claim 1 of the present invention is a method for inspecting a crimping state of a crimping terminal by inspecting a crimping state of a crimping terminal attached to an end of an electric wire by crimping by image processing. The crimping portion of the crimping terminal is irradiated with crimping portion illumination light having a predetermined hue, and the background body of the crimping portion is irradiated with background body illumination light having a hue different from that of the crimping portion illumination light. Image of the crimped portion and the background body, image processing is performed on the imaged data, and the position of the covered end portion of the electric wire in the crimped portion is detected to inspect whether the crimped portion is good or defective. It is.

  The invention described in claim 2 of the present invention is a crimp terminal crimping state inspection device for inspecting a crimping state of a crimping terminal attached to an end portion of an electric wire by crimping by image processing. A pressure bonding unit illumination unit that irradiates the pressure bonding unit illumination light of a predetermined hue, a background body illumination unit that irradiates a background body illumination light of a hue different from the pressure bonding unit illumination light to the background body of the pressure bonding unit, and irradiation with these illumination light An image pickup means for picking up an image of the crimped portion and the background body, and an image processing means for inspecting the goodness and badness of the pressure-bonded portion by detecting the position of the covered end portion of the electric wire by image processing the image data. It is characterized by.

  The invention described in claim 3 of the present invention is a method for inspecting a crimping state of a crimping terminal in which a crimping state of a crimping terminal attached to an end of an electric wire is crimped by image processing. The background color of the background body is switched to a different background color depending on the color of the wire in the crimping portion, the crimping portion and the background body are imaged, and the captured data is image-processed to cover the end of the wire in the crimping portion. By detecting the position of the part, it is characterized by inspecting the good or bad of the crimping part.

  The invention described in claim 4 of the present invention is the method for inspecting the crimping state of the crimp terminal according to claim 3, wherein the crimp portion illumination light having a hue different from the background color of the background body is crimped to the crimp portion of the crimp terminal. It irradiates before image | photographing a part and a background body.

  According to a fifth aspect of the present invention, in the crimping state inspection device for a crimping terminal for inspecting the crimping state of the crimping terminal attached to the end portion of the electric wire by crimping, in the crimping portion of the crimping terminal. A background color switching means for switching the background color of the background body to a different background color depending on the color of the wire in the crimping section, an imaging means for imaging the crimping section and the background body, and image processing of the imaging data Image processing means for inspecting the goodness and badness of the crimping part by detecting the position of the covering end of the electric wire, and the background color switching means is a background in which background body pieces of different background colors are arranged A background body drive that is connected to the body and the background body and switches the background color by moving a background body piece of a background color different from the coating color according to the coating color of the wire in the crimping section to a position facing the crimping section. It is characterized in that it has a part.

  According to a sixth aspect of the present invention, in the crimp state inspection apparatus for a crimp terminal according to the fifth aspect, the crimp portion illumination light having a hue different from the background color of the background body is irradiated to the crimp portion of the crimp terminal. It is characterized by comprising a crimping section illumination means.

  According to the crimping state inspection method and the inspection apparatus of the crimping terminal according to the first and second aspects of the present invention, the crimping portion of the crimping terminal is irradiated with the crimping portion illumination light having a predetermined hue from the crimping portion illumination unit, and Since the background body illumination light having a hue different from that of the crimping portion illumination light is emitted from the background body lighting means to the background body of the crimping portion, the hue difference between the covering color of the electric wire in the crimping portion and the background color of the background body is Further, the image is spread by the pressure-bonding portion illumination light and the background-body illumination light of different hues that are respectively irradiated on the background body, and the contrast of the imaging data of the pressure-bonding portion and the background body obtained by the imaging unit is increased. In addition, since the background body is illuminated instead of illuminating the crimping portion from the background body side, the contour of the crimping portion is not likely to be unclear. As a result, when the image data is image-processed by the image processing means, it becomes possible to easily detect the position of the coated end portion of the electric wire in the crimping portion, and the crimping state of the crimping portion of the crimping terminal is good or bad. Inspection can be performed accurately and accurately.

  According to the crimping state inspection method and the inspection device for the crimping terminal according to claims 3 and 5 of the present invention, the background color of the background body in the crimping part is changed according to the covering color of the electric wire in the crimping part by the background color switching means. Since the background color is switched to a different background color, the hue difference between the covering color of the electric wire in the crimping part and the background color of the background body widens, and the imaging data of the crimping part and the background body obtained by the imaging means Increases contrast. Moreover, since the crimping | compression-bonding part is not illuminated from the background body side, the outline of a crimping | compression-bonding part does not become obscure. As a result, when the image data is image-processed by the image processing means, it becomes possible to easily detect the position of the coated end portion of the electric wire in the crimping portion, and the crimping state of the crimping portion of the crimping terminal is good or bad. Inspection can be performed accurately and accurately.

  According to the crimping state inspection method and the inspection apparatus for the crimping terminal according to the fourth and sixth aspects of the present invention, the crimping part illumination light having a hue different from the background color of the background body is applied to the crimping part of the crimping terminal and the crimping part. Since irradiation is performed before the background body is imaged, the hue of the covering color of the wire in the crimping part is deflected to the hue side of the crimping part illumination light, and the contrast of the imaging data of the crimping part and the background body obtained by the imaging means is more As a result, it becomes easier to detect the position of the coated end portion of the electric wire, and the crimping state of the crimping portion can be more accurately inspected.

  Next, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a front schematic view showing an embodiment of a crimped terminal crimping state inspection method and inspection apparatus according to the present invention, and FIG. 2 is a side schematic view of FIG. In addition, the same code | symbol is attached | subjected to the same structure as what was described in the prior art, and detailed description is abbreviate | omitted.

  As shown in FIGS. 1 and 2, the crimping terminal inspection apparatus for a crimping terminal according to this embodiment applies a crimping portion illumination light 8 having a predetermined hue to the crimping portion 3 of the crimping terminal 2 attached to the end of the electric wire 1 by crimping. By the crimping part illumination means 8 for irradiating, the background body illumination means 5 for irradiating the background body 9 of the crimping part 3 with the background body illumination light 10 having a hue different from that of the crimping part illumination light 8, and these illumination lights 8, 10. The imaging means 6 that images the irradiated crimping part 3 and the background body 9 and the image data are processed to detect the position of the covered end 1c of the electric wire 1 to inspect whether the crimping part 3 is good or defective. And image processing means 7.

  More specifically, the crimping part illumination means 4 is composed of, for example, a light emitting diode (LED) or the like, and irradiates the crimping part 3 with a crimping part illumination light 8 of a predetermined hue, for example, white, red, green, and blue. It is like that. The background body illumination means 5 is made of, for example, a light emitting diode (LED), and the background body 9 has a hue different from that of the crimping portion illumination light 8, preferably a complementary color or a relation approximate to the crimping portion illumination light 8. When the background illumination light 10 having a large hue difference, for example, the crimping portion illumination light 8 is red, the blue background illumination light 10 is emitted. The imaging means 6 is composed of a television camera, CCD or the like, and images the crimping part 3 and the background body 9 irradiated by the illumination lights 8 and 10. Further, the image processing means 7 performs image processing on the image data picked up by the image pickup means 6, binarizes the luminance data of the pixels, counts the bright portion of the binarized data, and compares it with a preset threshold value. By measuring the length L between the covered end 1c of the electric wire 1 and the front edge of the covered barrel 2b, detecting the position of the covered end 1c and comparing it with the reference value, It is designed to inspect for good and bad.

  Reference numeral 11 denotes a monitor television receiver for monitoring the imaging data of the crimping part 3 and the background body 9 obtained by the imaging means 6, and 12 denotes a test result of good and bad of the crimping part 3 to a printer, a display or the like. An inspection output unit 13 is a keyboard for inputting program data and the like necessary for image processing.

  When the crimping state of the crimp terminal 2 is inspected using the crimping state inspection device, for example, as shown in FIGS. 1 and 2, the crimping color is crimped to the end of the electric wire 1 having a white or gray color. The attached crimping terminal 2 is rotated 90 degrees around the axis of the electric wire 1 so as to be turned sideways, and is held at a position floated at a predetermined height from the background body 9 whose background color is white or gray just below the imaging means 6. . Next, the laterally crimped portion 3 is irradiated with, for example, a crimped portion illumination light 8 having a red hue obliquely downward from the two crimped portion illumination means 4 disposed obliquely upward on both sides, and crimped. The background body 9 of the portion 3 is different from the background portion illumination means 5 disposed obliquely above the front side of the crimping portion 3 in the hue difference from the crimping portion illumination light 8 and has a substantially complementary color-related blue background. The body illumination light 10 is irradiated obliquely downward. Next, the crimping part 3 and the background body 9 irradiated by these illumination lights 8 and 10 are imaged by the imaging means 6, and the image data is subjected to image processing by the image processing means 7, and the covered end of the electric wire 1 in the crimping part 3. By detecting the position of the portion 1c, the crimping portion 3 is inspected for quality.

  According to the crimping state inspection method and inspection apparatus of the embodiment shown in FIGS. 1 and 2, the crimping portion 3 of the crimping terminal 2 is irradiated with the crimping portion illumination light 8 having a predetermined hue from the crimping portion illumination means 4, and the crimping portion. The background body illumination means 10 irradiates the background body illumination light 10 having a hue different from that of the crimping portion illumination light 8 from the background body illumination means 5, so that the covering color of the electric wire 1 in the crimping portion 3 and the background of the background body 9 Even when the color is, for example, white or gray and the hue difference between the two is small, the crimping unit 3 and the background body 9 are spread by the crimping unit illumination light 8 and the background body illumination light 10 with different hues, respectively. The contrast of the imaging data of the crimping part 3 and the background body 9 obtained in 6 is increased. Moreover, since the crimping | compression-bonding part 3 is not illuminated from the background body 9 side but the background body 9 is illuminated, the outline of the crimping | compression-bonding part 3 does not become obscure easily. As a result, when the image data is subjected to image processing by the image processing means 7, it is possible to easily detect the position of the covered end portion 1 c of the electric wire 1 in the crimping portion 3, and crimping in the crimping portion 3 of the crimping terminal 2. It is possible to accurately and accurately inspect whether the state is good or bad.

  FIG. 3 shows another embodiment of the crimp terminal crimping state inspection method and inspection apparatus according to the present invention, and is a schematic front view of the state before the background color is switched by the background color switching means. FIG. In embodiment shown in FIG. 5, it is a front schematic diagram of the state after switching the background color of a background body by the background color switching means.

  As shown in FIGS. 3 and 4, the crimp state inspection device for the crimp terminal 2 of the present embodiment is different from the background color of the background body 16 in the crimp part 3 of the crimp terminal 2 attached to the end of the electric wire by crimping. The crimping part illumination means 14 for irradiating the crimping part illumination light 17 of the hue, and the background color of the background body 16 in the crimping part 3 of the crimping terminal 2 is different from this depending on the covering color of the electric wire 1 in the crimping part 3 A background color switching means 15 for switching to a color, an imaging means 6 for imaging the crimping part 3 and the background body 16, and a crimping part by performing image processing on the imaged data and detecting the position of the covering end 1c of the electric wire 1 3 and image processing means 7 for inspecting good and bad.

  Further, the background color switching means 15 has a rectangular plate-like background in which a plurality of, for example, two different background colors, that is, a white background piece 16a and a black background piece 16b are arranged in parallel and connected. The body 16 and the background body 16 are connected to the background body 16, and the background body piece 16 a or the background body piece 16 b having a background color different from the coating color according to the coating color of the electric wire 1 in the crimping section 3 is positioned to face the crimping section 3. A background body drive unit 18 including a fluid pressure cylinder that is moved to switch the background color of the background body 16 is provided.

  The crimping part illumination unit 14 has substantially the same configuration as the crimping part illumination unit 4, and includes, for example, a light emitting diode (LED). Since the image pickup means 6 and the image processing means 7 are the same as those of the embodiment shown in FIGS.

  As shown in Table 1 below, the background color switching means 15 extends the piston rod 18a of the background body drive unit 18 when the covering color of the electric wire 1 is dark (dark) such as green or blue. Then, the background body piece 16a whose background color of the background body 16 is white is arranged so as to come to a position directly opposite to the crimping portion 3 of the crimp terminal 2 (see FIG. 3), and the covering color of the electric wire 1 is red, pink In the case of a light color (bright color) such as a color, the piston rod 18a of the background body driving unit 18 is degenerated so that the background body piece 16b whose background color of the background body 16 is black is directly below the crimping unit 3. The background color can be switched from white to black, or from black to white.

  The hue of the crimping part illumination light emitted from the crimping part illumination means 14 is green or blue when the background color of the background body 16 is white, and when the background color of the background body 16 is black. It is desirable to select a red, white system.

  When the crimping state of the crimp terminal 2 is inspected using the crimping state inspection apparatus of the embodiment shown in FIGS. 3 and 4, for example, as shown in FIG. The crimp terminal 2 attached by crimping is rotated 90 degrees around the axis of the electric wire 1 to be turned sideways, and is held at a position floating a predetermined height from the background body 16 just below the imaging means 6. Next, the piston rod 18 a of the background body drive unit 18 is extended so that the background body piece 16 a with the white background color of the background body 16 comes to a position facing directly below the crimping unit 3. Next, the crimping portion illumination light 17 having, for example, a blue hue is irradiated obliquely downward from the two crimping portion illumination means 14 disposed obliquely above both sides of the lateral crimping portion 3. Next, the crimping part 3 and the background body piece 16a of the background body 16 irradiated by the illumination light 17 are imaged by the imaging means 6, and the imaging data is subjected to image processing by the image processing means 7, and the electric wire 1 in the crimping part 3 is processed. The position of the covering end 1c is detected, and the crimping part 3 is inspected for good or bad.

  For example, when the crimping state of the crimp terminal 2 attached to the red electric wire 1 is inspected, the piston rod 18a of the background drive unit 18 is degenerated as shown in FIG. The background body piece 16b having a black background color is arranged so as to be located at a position facing directly below the crimping portion 3, and the background color is switched from white to black. Next, the crimping portion illumination means 14 applies, for example, a red hue crimping portion illumination light 17 obliquely downward to the crimping portion 3 of the lateral crimping terminal 2 held in the same manner as shown in FIG. The crimping section 3 and the background body piece 16b of the background body 16 irradiated with the illumination light 17 are imaged by the imaging means 6, and the image data is image-processed by the image processing means 7, and the electric wire 1 in the crimping section 3 is irradiated. The position of the covering end 1c is detected, and the crimping part 3 is inspected for good or bad.

  According to the crimping state inspection method and inspection apparatus of the embodiment shown in FIGS. 3 and 4, the background color of the background body 16 in the crimping part 3 is changed by the background color switching means 15 according to the covering color of the electric wire 1 in the crimping part 3. Since the background color is switched to a different background color, the hue difference between the covering color of the electric wire 1 and the background color of the background body 16 in the crimping section 3 is widened, and the crimping section 3 and the background body obtained by the imaging means 6 are spread. The contrast of the 16 image data increases. Moreover, since the crimping | compression-bonding part 3 is not illuminated from the background body 16 side, the outline of the crimping | compression-bonding part 3 does not become obscure. As a result, when the image data is subjected to image processing by the image processing means 7, it is possible to easily detect the position of the covered end portion 1 c of the electric wire 1 in the crimping portion 3, and crimping in the crimping portion 3 of the crimping terminal 2. It is possible to accurately and accurately inspect whether the state is good or bad.

  Furthermore, as described above, when the crimping portion 3 of the crimping terminal 2 is irradiated with the crimping portion illumination light 17 having a hue different from the background color of the background body 16 before imaging the crimping portion 3 and the background body 16, The hue of the covering color of the electric wire 1 in the crimping part 3 is deflected to the hue side of the crimping part illumination light 17, and the contrast of the imaging data of the crimping part 3 and the background body 16 obtained by the imaging means 6 becomes larger. It is preferable because the detection of the position of one covering end 1c is further facilitated and the crimping state of the crimping part 3 can be more accurately inspected.

  The background body 16 in the background color switching means 15 may be formed by arranging three or more background body pieces 16a, 16b having different background colors. Further, a plurality of background body pieces 16a, 16b, etc. are arranged in a circular shape to form a disk shape, and the background color is switched by rotating the background body 16 with a background body drive unit 18 such as a motor. It may be configured.

BRIEF DESCRIPTION OF THE DRAWINGS It is a front schematic diagram which shows one Embodiment of the crimping | compression-bonding state test | inspection method and test | inspection apparatus of the crimp terminal which concerns on this invention. It is a side surface schematic diagram of FIG. It is a front schematic diagram of the state before switching the background color of the background body with the background color switching means, showing another embodiment of the crimping state inspection method and the inspection device of the crimp terminal according to the present invention. In embodiment shown in FIG. 3, it is a front schematic diagram of the state after switching the background color of a background body by the background color switching means. It is a front view which shows the state by which the crimp terminal was attached to the edge part of the electric wire by crimping.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electric wire 1a Conductor 1b Cover 1c Cover end 2 Crimp terminal 2a Conductor barrel 2b Cover barrel 3 Crimp part 4 Crimp part illumination means 5 Background body illumination means 6 Imaging means 7 Image processing means 8 Crimp part illumination light 9 Background body 10 Background body Illumination light 11 Monitor television receiver 12 Inspection output unit 13 Keyboard 14 Crimping unit illumination unit 15 Background color switching unit 16 Background body 16a Background body piece 16b Background body piece 17 Crimping unit illumination light 18 Background body drive unit 18a Piston rod

Claims (6)

  In the crimping state inspection method of the crimping terminal for inspecting the crimping state of the crimping terminal attached to the end of the wire by crimping, the crimping part illumination light of a predetermined hue is irradiated to the crimping part of the crimping terminal, and The background body of the crimping portion is irradiated with background body illumination light having a hue different from that of the crimping portion illumination light, the crimping portion and the background body irradiated with the illumination light are imaged, and the imaging data is subjected to image processing to be performed in the crimping portion. A method for inspecting a crimping state of a crimping terminal, comprising: detecting a position of a covering end portion of an electric wire to inspect whether or not a crimping portion is good.   In the crimping state inspection device for a crimping terminal that inspects the crimping state of the crimping terminal attached to the end of the electric wire by crimping, the crimping part illumination that irradiates the crimping part illumination light of a predetermined color onto the crimping part of the crimping terminal. Means, background body illumination means for irradiating the background body of the crimping section with a background body illumination light having a hue different from that of the crimping section illumination light, and imaging means for imaging the crimped section and the background body irradiated with the illumination light. An apparatus for inspecting the crimping state of a crimping terminal, comprising image processing means for inspecting whether the crimping part is good or defective by performing image processing on the imaged data and detecting the position of the coated end of the electric wire.   In the crimping state inspection method of the crimping terminal for inspecting the crimping state of the crimping terminal attached to the end of the wire by crimping, the background color of the background body in the crimping part of the crimping terminal is the coating color of the wire in the crimping part Depending on the condition, the background color is switched to a different background color, the crimped part and the background body are imaged, the image data is processed, and the position of the coated end of the wire in the crimped part is detected. A method for inspecting a crimping state of a crimp terminal, characterized by inspecting for defects.   The crimping state inspection of the crimping terminal according to claim 3, wherein the crimping part illumination light of a hue different from the background color of the background body is irradiated to the crimping part of the crimping terminal before imaging the crimping part and the background body. Method.   In a crimping terminal crimping state inspection device for inspecting the crimping state of a crimping terminal attached to the end of an electric wire by crimping, the background color of the background body in the crimping part of the crimping terminal is the coating color of the wire in the crimping part A background color switching means for switching to a background color different from this, an imaging means for imaging the crimping part and the background body, and image processing of the imaging data to detect the position of the covered end of the wire An image processing means for inspecting the goodness and failure of the crimping portion, and the background color switching means is connected to the background body in which a plurality of background body pieces of different background colors are arranged, and the electric wire in the crimping portion. A crimping end having a background body drive unit that switches a background color by moving a background body piece of a background color different from the coating color according to the coating color to a position facing the crimping unit Of the crimping state inspection apparatus.   The crimp terminal crimping state inspection apparatus according to claim 5, further comprising: a crimp part illumination unit that irradiates the crimp part of the crimp terminal with a crimp part illumination light having a hue different from a background color of a background body.

Images