JP6911442B2 - Inspection equipment and inspection method - Google Patents

Description

The technique disclosed in the present specification relates to, for example, a technique for inspecting a crimping defect in a core wire barrel.

For example, in the manufacture of wire harnesses for automobiles, an electric wire with a terminal in which a crimp terminal is crimped to the end of an insulated electric wire is used.

As a method of inspecting the connection state of the crimp terminal in the core wire barrel, for example, there is a method of inspecting whether or not the core wire protrudes around the core wire barrel in a state of being crimped to the core wire of the insulated wire. In the inspection, first, in the imaging data in which the end of the insulated wire is imaged, the peripheral portion of the core wire barrel excluding the core wire barrel itself is set as the inspection area. Then, it is inspected whether or not there is a protrusion of the core wire mainly by referring to the brightness distribution in the inspection area occupied by the background image.

Japanese Unexamined Patent Publication No. 2003-214825

In order to improve the inspection accuracy in the above inspection method, it is desirable that the inspection area is set at a position as close as possible to the core wire barrel. However, the region of the core wire barrel in the imaging data corresponding to each insulated wire changes due to a difference in the shape of the core wire barrel in the crimped state or a deviation in the direction in which the end portion of the insulated wire is imaged. Therefore, if the adjustment of the inspection area is insufficient, for example, the core wire barrel itself is included in the inspection area, and there is a problem that the core wire barrel is mistaken as a protrusion of the core wire.

The technique disclosed in the present specification has been made to solve the above-mentioned problems, and even if there is a difference in the shape of the imaged core wire barrel, the crimping is performed appropriately. It is an object of the present invention to provide a technique for inspecting the connection state between a terminal and an insulated electric wire.

The first aspect of the technique disclosed in the present specification is an inspection device for inspecting the connection state between the insulated wire and the crimp terminal crimped to the end of the insulated wire, and the insulation in the crimp terminal. The direction along the length direction of the electric wire is defined as the first direction, the direction intersecting the first direction is defined as the second direction, and the insulated wire includes a core wire and an insulating coating covering the core wire. the crimp terminal, said at the end of the insulated wire comprises a core wire barrel to be crimped to the core wire exposed from the insulating coating, wherein an imaging unit that captures the end of the insulated wire is imaged by the imaging unit In the imaging data of the end portion of the insulated wire, the width detection unit that detects the width of the core wire barrel in the second direction at a plurality of locations, and the core wire barrel at the plurality of locations detected by the width detection unit. An inspection unit for inspecting the connection state between the insulated wire and the crimp terminal based on the width is provided , and the inspection unit has a degree of variation in the widths of the plurality of core wire barrels detected in the width detection unit in advance. The connection state between the insulated wire and the crimp terminal is inspected based on whether or not the predetermined threshold value is exceeded .

A second aspect of the technique disclosed herein relates to a first aspect, wherein the inspection unit is the maximum and minimum of the widths of the plurality of core wire barrels detected by the width detection unit. The connection state between the insulated wire and the crimp terminal is inspected based on whether or not the difference from the value exceeds the threshold value.
The third aspect of the technique disclosed in the present specification relates to the first or second aspect, and the width detection unit is used in the imaging data of the end portion of the insulated wire imaged by the imaging unit. the width in the second direction of the core wire barrel except the bellmouth portion formed at an end portion of the core wire barrel, detected at a plurality of locations.

A fourth aspect of the technique disclosed in the present specification is an inspection method for inspecting the connection state between the insulated wire and the crimp terminal crimped to the end of the insulated wire, and the insulation in the crimp terminal. The direction along the length direction of the electric wire is defined as the first direction, the direction intersecting the first direction is defined as the second direction, and the insulated wire includes a core wire and an insulating coating covering the core wire. The crimp terminal includes a core wire barrel that is crimped to the core wire exposed from the insulating coating at the end portion of the insulated wire, images the end portion of the insulated wire, and images the end of the insulated wire. In the imaging data of the unit, the width of the core wire barrel in the second direction is detected at a plurality of locations, and the connection state between the insulated wire and the crimp terminal is based on the width of the core wire barrel at the detected plurality of locations. And inspecting the connection state between the insulated wire and the crimp terminal is based on whether or not the degree of variation in the widths of the plurality of detected core wire barrels exceeds a predetermined threshold value. , The connection state between the insulated wire and the crimp terminal is inspected.

According to the first aspect of the technique disclosed in the present specification, in order to inspect the connection state between the insulated wire and the crimp terminal based on the width of the core wire barrel itself at a plurality of locations, the shape of the core wire barrel may be different. There is no need to adjust the inspection area accordingly. Therefore, problems such as misidentification due to insufficient adjustment of the inspection area do not occur.

In particular, according to the second aspect, when the difference between the maximum value and the minimum value of the width of the crimping portion at a plurality of locations is large, it is detected that the insulated wire and the crimping terminal are not properly connected. be able to.
In particular, according to the third aspect, in order to inspect the connection state between the insulated wire and the crimp terminal based on the width itself of the core wire barrel at a plurality of locations, the inspection area is adjusted according to the difference in the shape of the core wire barrel and the like. No need.

According to the fourth aspect of the technique disclosed in the present specification, in order to inspect the connection state between the insulated wire and the crimp terminal based on the width of the core wire barrel itself at a plurality of locations, the shape of the core wire barrel may be different. There is no need to adjust the inspection area accordingly.

The technical objectives, features, aspects, and advantages disclosed herein will be further clarified by the detailed description and accompanying drawings set forth below.

It is a figure which illustrates the structure of the electric wire with a terminal which concerns on embodiment. It is a figure which schematically exemplifies the hardware configuration for realizing the inspection apparatus with respect to embodiment. It is a functional block diagram realized in the inspection processing part with respect to embodiment. It is a figure which illustrates the imaging data of the electric wire with a terminal which is stored in the storage part. It is a flowchart which exemplifies the operation of the inspection apparatus stored in the storage part. It is a figure which illustrates the imaging data of the electric wire with a terminal when the core wire protrudes. It is a figure which illustrates the degree of variation of the width at a plurality of places of a crimping portion. It is a figure which illustrates the imaging data of the electric wire with a terminal when the core wire protrudes.

Hereinafter, embodiments will be described with reference to the attached drawings.

It should be noted that the drawings are shown schematically, and for convenience of explanation, the configuration is omitted or the configuration is simplified as appropriate. Further, the interrelationship between the sizes and positions of the configurations and the like shown in different drawings is not always accurately described and can be changed as appropriate.

Further, in the description shown below, similar components are illustrated with the same reference numerals, and their names and functions are also the same. Therefore, detailed description of them may be omitted to avoid duplication.

Also, even if ordinal numbers such as "first" or "second" may be used in the description described below, these terms should be used to understand the content of the embodiment. It is used for convenience for ease of use, and is not limited to the order that can occur due to these ordinals.

<Embodiment>
Hereinafter, the inspection device and the inspection method according to the present embodiment will be described. For convenience of explanation, first, an electric wire with a terminal to be inspected will be described.

<About the configuration of electric wires with terminals>
FIG. 1 is a diagram illustrating the configuration of the electric wire 10 with terminals. As illustrated in FIG. 1, the terminald electric wire 10 includes an insulated electric wire 12 and a crimping terminal 14 crimped to an end portion of the insulated electric wire 12.

The insulated wire 12 includes a core wire 12A and an insulating coating 12B that covers the core wire 12A. The core wire 12A is exposed from the insulating coating 12B at the end of the insulated wire 12.

The core wire 12A is a wire rod containing a metal such as copper or aluminum as a main component. As illustrated in FIG. 1, a plurality of core wires 12A may be bundled and covered with an insulating coating 12B, or one core wire 12A may be covered with an insulating coating 12B. The insulating coating 12B is a member of a synthetic resin containing, for example, polyethylene, vinyl chloride, or polyamide nylon as a main component.

The crimp terminal 14 is crimped by crimping a plate-shaped metal member against the end of the insulated wire 12. As the material of the crimp terminal 14, a metal material containing copper or an alloy of copper is assumed. The crimp terminal 14 includes a connecting portion 14A, a core wire barrel 14B, and an insulating barrel 14C.

The connecting portion 14A is a metal member connected to the mating terminal. In the case illustrated in FIG. 1, the connecting portion 14A is a connecting portion of the female terminal, but a connecting portion of the male terminal may be provided.

The core wire barrel 14B is crimped to the core wire 12A of the insulated wire 12. In the core wire barrel 14B illustrated in FIG. 1, a plate-shaped metal member is crimped to the core wire 12A exposed from the insulated wire 12 from both sides of the core wire 12A.

The core wire barrel 14B includes a crimping portion 120 that is crimped to the core wire 12A, and a bell mouth portion 122 that is a surplus portion formed adjacent to the crimping portion 120. The crimping portion 120 and the bell mouth portion 122 are continuously formed. The bell mouth portion 122 illustrated in FIG. 1 is formed at an end portion of the core wire barrel 14B close to the insulating barrel 14C, but the end portion opposite to the end portion, that is, the end portion far from the insulating barrel 14C. May be formed instead. Alternatively, the bell mouth portion 122 may be formed at an end portion of the core wire barrel 14B near the insulating barrel 14C and at an end portion opposite to the end portion, respectively.

The insulating barrel 14C is crimped to the insulating coating 12B of the insulated wire 12. The insulating barrel 14C is crimped to the insulating coating 12B at a position farther from the end of the insulated wire 12 than the position where the core wire barrel 14B is crimped. In the insulating barrel 14C illustrated in FIG. 1, a plate-shaped metal member is crimped to the insulating coating 12B of the insulating electric wire 12 from both sides of the insulating coating 12B and crimped.

<About the hardware configuration of the inspection device>
Next, the inspection device according to the present embodiment will be described. FIG. 2 is a diagram schematically illustrating a hardware configuration for realizing the inspection device according to the present embodiment. As illustrated in FIG. 2, the inspection device includes an imaging unit 22 and an inspection processing unit 29.

The image pickup unit 22 takes an image of the crimp terminal 14 crimped to the end of the insulated wire 12. The imaging unit 22 can be composed of, for example, a two-dimensional image sensor, an imaging lens, and the like.

The inspection processing unit 29 inspects the connection state between the crimp terminal 14 and the insulated electric wire 12 at the end of the terminal-equipped electric wire 10 by analyzing the imaging data of the crimp terminal 14 imaged by the imaging unit 22. The inspection processing unit 29 is, for example, a central processing unit (CPU) 201, a read-only memory (ROM) 202, and a random access memory (RAM) 203. , Communication unit 204, storage device 205, and the like are configured by a general computer interconnected via a bus line 206.

The ROM 202 stores a basic program and the like, and the RAM 203 is used as a work area when the CPU 201 performs a predetermined process. The communication unit 204 has a data communication function via a communication line such as a LAN.

The storage device 205 is, for example, a hard disk (Hard disk drive, that is, HDD), a flash memory, an erasable programmable read only memory (EPROM), an electrically erasable errasable volatile EEPROM, or a non-volatile semiconductor or volatile memory. Any storage medium such as a memory, a magnetic disk, a flexible disk, an optical disk, a compact disk, a memory (storage medium) including a mini disk or a DVD can be applied.

The program 300 is stored in the storage device 205, and is configured so that various functions of the inspection device are realized by performing arithmetic processing by the CPU 201 as the main control unit according to the procedure described in the program 300. ing.

The program 300 is usually stored in a memory such as a storage device 205 in advance and used, but is provided in a form recorded on a recording medium such as a CD-ROM or DVD-ROM or an external flash memory. It may be additionally or interchangeably stored in a memory such as the storage device 205. In addition, some or all the functions realized by the inspection processing unit 29 may be realized by hardware by a dedicated logic circuit or the like.

An input device 28 and a display device 26 are further connected to the inspection processing unit 29. The input device 28 is an input device including at least one such as a keyboard, a mouse, various switches, and a touch panel, and receives various operations (operations such as commands or input of various data) from an operator.

The display device 26 is composed of a liquid crystal display device, a lamp, and the like, and displays various information under the control of the CPU 201.

<About the software configuration of the inspection device>
FIG. 3 is a functional block diagram realized by the inspection processing unit 29. As illustrated in FIG. 3, the inspection processing unit 29 includes an image pickup control unit 32, a storage unit 34, a brightness acquisition unit 36, a width detection unit 37, and an inspection unit 38. As described above, these functional units are realized, for example, by the CPU 201 performing predetermined arithmetic processing according to the program 300.

The image pickup control unit 32 controls the image pickup unit 22 to take an image of the end of the electric wire 10 with a terminal. At the end of the terminal-equipped electric wire 10, the crimp terminal 14 is fixed to the end of the insulated wire 12 in a crimped state. The imaging unit 22 images the end of the insulated wire 12 in such a state. The imaging data acquired by the imaging unit 22 is displayed on the display device 26, for example, under the control of the inspection processing unit 29.

The storage unit 34 stores the image pickup data of the end portion of the terminal-attached electric wire 10 imaged by the image pickup unit 22. Further, the storage unit 34 is an image pickup that serves as a reference for a threshold value for evaluating the degree of variation in the width of the core wire barrel 14B, which will be described later, and an end portion of the terminal-equipped electric wire 10 used for determining the threshold value. The data, that is, the reference imaging data is stored.

The brightness acquisition unit 36 acquires the brightness of the crimp terminal 14 from the image pickup data of the end portion of the terminal-attached electric wire 10 imaged by the image pickup unit 22. The specific acquisition method will be described later.

The width detection unit 37 detects the width of the core wire barrel 14B in the direction intersecting the length direction of the insulated wire 12 based on the brightness acquired by the brightness acquisition unit 36. The specific detection method will be described later.

The inspection unit 38 inspects the connection state between the crimp terminal 14 and the insulated wire 12 based on the width of the core wire barrel 14B detected by the width detection unit 37. The specific inspection method will be described later.

<About the operation of the inspection device>
Next, the operation of the inspection device according to the present embodiment will be described with reference to FIGS. 4 to 8. Note that FIG. 5 is a flowchart illustrating the operation of the inspection device.

First, the image pickup control unit 32 controls the image pickup unit 22 to take an image of the end portion of the electric wire 10 with a terminal (see step ST101). The imaging is performed on the ends of different terminald wires 10. Next, the storage unit 34 stores the imaging data of the terminal-attached electric wire 10 imaged by the imaging unit 22 (see step ST102).

Next, the brightness acquisition unit 36 acquires the brightness of the crimp terminal 14 from the imaging data stored in the storage unit 34 (see step ST103).

FIG. 4 is a diagram illustrating imaging data of the electric wire 10 with a terminal stored in the storage unit 34.

The brightness acquisition unit 36 acquires the brightness of the crimp terminal 14 at the end of the electric wire 10 with a terminal at a plurality of locations for each row along the width direction of the crimp terminal 14. Here, the width of the crimp terminal 14 is, for example, the width of the portion of the core wire barrel 14B excluding the bell mouth portion 122, that is, the length corresponding to the width of the crimp portion 120 (width A in FIG. 4), but strictly. The direction is not limited to the direction orthogonal to the length direction of the terminal-equipped electric wire 10 (the z-axis direction in FIG. 4). Further, the rows along the width direction of the crimp terminals 14 correspond to the respective rows B in FIG.

The brightness changes greatly at the edge of the crimp terminal 14, that is, the boundary position between the crimp terminal 14 and the background. Therefore, based on the amount of change in brightness acquired by the brightness acquisition unit 36, the edge of the crimp terminal 14 in the width direction can be specified, and the width A of the crimp portion 120 can be detected.

The width detecting unit 37 identifies the edge of the crimp terminal 14 based on the amount of change in brightness acquired by the luminance acquiring unit 36, and further detects the width A of the crimping portion 120 (see step ST104). The width A of the crimping portion 120 is detected at a plurality of locations for each row B.

Next, the inspection unit 38 inspects the connection state between the insulated wire 12 and the crimp terminal 14 based on the width A of the crimping portions 120 at a plurality of locations detected by the width detecting unit 37 (see step ST105).

Specifically, based on the degree of variation in the width A of the detected crimping portion 120, for example, whether or not the difference between the maximum value and the minimum value of the width A exceeds a predetermined threshold value E. It is inspected whether or not the insulated wire 12 and the crimp terminal 14 are properly connected.

In order to determine the above threshold value E, the width A of the crimping portion 120 is detected at a plurality of locations from the crimping terminal 14 crimped to the end portion of the terminald electric wire 10 in the reference imaging data. Then, the difference between the maximum value and the minimum value of the width A in the reference imaging data is quantified, and the value is set as the threshold value E. The reference imaging data is imaging data obtained by imaging the crimp terminal 14 in which the core wire 12A does not protrude from the core wire barrel 14B, and therefore the width A of the crimping portion 120 has a small degree of variation.

FIG. 6 is a diagram illustrating imaging data of the electric wire 10 with a terminal when the core wire 12A protrudes. In the case illustrated in FIG. 6, a part of the core wire 12A does not fit in the crimping portion 120 but wraps around to the outside of the crimping portion 120.

As illustrated in FIG. 6, when the core wire 12A protrudes, the edge of the crimp terminal 14 is not detected correctly, or the core wire 12A located outside the edge of the original crimp terminal 14 is the crimp terminal. Detected as 14 edges.

The crimping portion 120 of the crimping terminal 14 generally extends in the length direction of the crimping terminal 14 and is formed with a constant width. On the other hand, when there is a core wire 12A located outside the crimping portion 120 that does not fit inside the crimping portion 120, the core wire 12A is mistaken for the edge of the crimping portion 120, and the width A of the crimping portion 120 varies. Occurs. Utilizing this fact, the inspection unit 38 inspects whether or not the insulated wire 12 and the crimp terminal 14 are properly connected.

When the degree of variation in the width A exceeds the threshold value E, the inspection unit 38 has a core wire protrusion in the crimping portion 120, that is, the insulated wire 12 and the crimping terminal 14 are not properly connected. Judge. On the other hand, in the inspection unit 38, when the degree of variation in the width A does not exceed the threshold value E, there is no protrusion of the core wire in the crimping portion 120, that is, the insulated wire 12 and the crimping terminal 14 are appropriately connected. Judge that it is connected.

FIG. 7 is a diagram illustrating the degree of variation in the width A at a plurality of locations of the crimping portion 120. In FIG. 7, the vertical axis indicates the size of the width A, and the horizontal axis indicates the position where the width A is detected.

As illustrated in FIG. 7, the degree of variation in the width A of the imaged crimping portion 120 is represented by, for example, a score C which is the difference between the maximum value and the minimum value of the width A. By comparing the score C with the threshold value E predetermined based on the reference imaging data, the inspection unit 38 appropriately connects the insulated wire 12 and the crimp terminal 14 of the imaged electric wire 10 with terminals. Determine if it has been done.

When comparing the score C and the threshold value E, the value obtained by adding a predetermined offset value to the threshold value E is compared with the score C in consideration of the individual difference in the width A of the crimping portion 120. It may be determined whether or not the insulated wire 12 and the crimp terminal 14 are properly connected.

Further, in the above, the connection state between the insulated wire 12 and the crimp terminal 14 was inspected by comparing the score C, which is the difference between the maximum value and the minimum value of the width A, with the threshold value E. By comparing the amount of change in width A adjacent to each other in the x-axis direction, that is, the difference between the maximum value and the minimum value of the width change amount, with the corresponding threshold value in the reference imaging data, the insulated wire 12 and the crimp terminal 14 The connection status with may be inspected.

Further, the detection of the width A may be performed over the entire length direction (x-axis direction) of the crimping portion 120, and for example, the crimping portion 120 where the core wire 12A is likely to protrude or wrap around. It may be done at the edges.

Further, the direction in which the crimp terminal 14 is imaged may be changed according to the direction in which the core wire 12A protrudes.

FIG. 8 is a diagram illustrating imaging data of the electric wire 10 with a terminal when the core wire 12A protrudes. In the case illustrated in FIG. 8, a part of the core wire 12A does not fit in the crimping portion 120 but protrudes to the outside of the crimping portion 120.

As illustrated in FIG. 8, even when the core wire 12A protrudes in the y-axis direction, the crimp terminal 14 is imaged from a direction in which the core wire 12A located outside the crimp portion 120 can be appropriately grasped. By doing so, the width A can be detected. Therefore, the inspection unit 38 can determine whether or not the insulated wire 12 and the crimp terminal 14 are properly connected.

<About the effect caused by the above-described embodiment>
Next, the effects produced by the above-described embodiments will be illustrated. In the following description, the effect is described based on the specific configuration exemplified in the above-described embodiment, but is exemplified in the present specification to the extent that the same effect occurs. It may be replaced with other specific configurations.

According to the embodiment described above, the inspection device includes an image pickup unit 22, a width detection unit 37, and an inspection unit 38. The imaging unit 22 images the end of the insulated wire 12. The width detection unit 37 detects the width of the core wire barrel 14B in the second direction at a plurality of locations in the image pickup data of the end portion of the insulated wire 12 imaged by the image pickup unit 22. The inspection unit 38 inspects the connection state between the insulated wire 12 and the crimp terminal 14 based on the width of the core wire barrel 14B at a plurality of locations detected by the width detection unit 37. Here, the direction of the crimp terminal 14 along the length direction of the insulated wire 12 is defined as the first direction, and the direction intersecting the first direction, that is, the width direction is defined as the second direction. Further, the insulated wire 12 includes a core wire 12A and an insulating coating 12B that covers the core wire 12A. Further, the crimp terminal 14 includes a core wire barrel 14B that is crimped to the core wire 12A exposed from the insulating coating 12B at the end of the insulated wire 12.

According to such a configuration, in order to inspect the connection state between the insulated wire 12 and the crimp terminal 14 based on the width itself of the core wire barrel 14B at a plurality of locations, the inspection area is determined according to the difference in the shape of the core wire barrel 14B. No need to adjust. Therefore, problems such as misidentification due to insufficient adjustment of the inspection area do not occur.

In addition to these configurations, other configurations exemplified in the present specification may be omitted as appropriate. That is, if at least these configurations are provided, the effects described above can be produced.

However, when at least one of the other configurations exemplified in the present specification is appropriately added to the above-described configuration, that is, in the present specification not described as the above-described configuration. Even when the other configurations described above are added to the configurations described above, the effects described above can be similarly produced.

Further, according to the embodiment described above, the inspection unit 38 determines whether or not the degree of variation in the widths of the plurality of core wire barrels 14B detected by the width detection unit 37 exceeds a predetermined threshold value. The connection state between the insulated wire 12 and the crimp terminal 14 is inspected based on the above. According to such a configuration, the core wire 12A located outside the edge of the original crimp terminal 14 can be indirectly detected in the imaging data. Therefore, when the width A of the crimp portion 120 varies widely, It can be detected that the insulated wire 12 and the crimp terminal 14 are not properly connected.

Further, according to the embodiment described above, in the inspection unit 38, the difference between the maximum value and the minimum value of the widths of the plurality of core wire barrels 14B detected by the width detection unit 37 sets the threshold value. The connection state between the insulated wire 12 and the crimp terminal 14 is inspected based on whether or not it exceeds the limit. According to such a configuration, when the difference between the maximum value and the minimum value of the width A of the crimping portion 120 at a plurality of locations is large, the insulated wire 12 and the crimping terminal 14 are not properly connected. Can be detected. Further, for example, as compared with the case of inspecting the connection state between the insulated wire 12 and the crimp terminal 14 based on the difference between the maximum value and the minimum value of the width change amount of the widths A adjacent to each other in the x-axis direction, the crimp terminal 14 The detection accuracy is improved for the core wire 12A or the like that gradually protrudes from the crimp terminal 14 along the length direction of the wire. That is, even when the width change amount does not change significantly in the length direction of the crimp terminal 14, the difference between the maximum value and the minimum value of the width A changes, so that the detection accuracy can be maintained high. ..

According to the embodiment described above, in the inspection method, the end portion of the insulated wire 12 is imaged. Then, in the imaged data of the end portion of the insulated wire 12 that has been imaged, the width of the core wire barrel 14B in the second direction is detected at a plurality of places. Then, the connection state between the insulated wire 12 and the crimp terminal 14 is inspected based on the width of the core wire barrel 14B at the detected plurality of locations.

According to such a configuration, in order to inspect the connection state between the insulated wire 12 and the crimp terminal 14 based on the width itself of the core wire barrel 14B at a plurality of locations, the inspection area is determined according to the difference in the shape of the core wire barrel 14B. No need to adjust. Therefore, problems such as misidentification due to insufficient adjustment of the inspection area do not occur.

In addition to these configurations, other configurations exemplified in the present specification may be omitted as appropriate. That is, if at least these configurations are provided, the effects described above can be produced.

However, when at least one of the other configurations exemplified in the present specification is appropriately added to the above-described configuration, that is, in the present specification not described as the above-described configuration. Even when the other configurations described above are added to the configurations described above, the effects described above can be similarly produced.

<About the modified example in the above-described embodiment>
In the embodiments described above, the materials, materials, dimensions, shapes, relative arrangement relationships, implementation conditions, etc. of each component may also be described, but these are examples in all aspects. Therefore, the present invention is not limited to those described in the present specification.

Therefore, innumerable variations and equivalents not exemplified are envisioned within the scope of the techniques disclosed herein. For example, it is assumed that at least one component is modified, added or omitted.

Further, in the above-described embodiment, when a material name or the like is described without being specified, the material contains other additives, for example, an alloy, etc., as long as there is no contradiction. It shall be included.

10 Wire with terminal 12 Insulated wire 12A Core wire 12B Insulation coating 14 Crimping terminal 14A Connection part 14B Core wire barrel 14C Insulated barrel 22 Imaging unit 26 Display device 28 Input device 29 Inspection processing unit 32 Imaging control unit 34 Storage unit 36 Brightness acquisition unit 37 Width Detection part 38 Inspection part 120 Crimping part 122 Bellmouth part 201 CPU
202 ROM
203 RAM
204 Communication unit 205 Storage device 206 Bus line 300 Program A Width B Column C Score E Threshold

Claims (4)

It is an inspection device that inspects the connection state between an insulated wire and a crimp terminal crimped to the end of the insulated wire.
In the crimp terminal, the direction along the length direction of the insulated wire is defined as the first direction, and the direction intersecting the first direction is defined as the second direction.
The insulated wire includes a core wire and an insulating coating that covers the core wire.
The crimp terminal comprises a core wire barrel that is crimped to the core wire exposed from the insulation coating at the end of the insulated wire.
An imaging unit that images the end of the insulated wire,
In the imaging data of the end portion of the insulated wire imaged by the imaging unit, a width detecting unit that detects the width of the core wire barrel in the second direction at a plurality of locations, and
An inspection unit for inspecting the connection state between the insulated wire and the crimp terminal based on the width of the core wire barrel at a plurality of locations detected by the width detection unit is provided.
The inspection unit connects the insulated wire and the crimp terminal based on whether or not the degree of variation in the widths of the plurality of core wire barrels detected by the width detection unit exceeds a predetermined threshold value. Inspect the condition,
Inspection equipment. The inspection unit performs the insulated wire and the insulated wire based on whether or not the difference between the maximum value and the minimum value of the widths of the plurality of core wire barrels detected by the width detecting unit exceeds the threshold value. Inspect the connection with the crimp terminal,
The inspection device according to claim 1. The width detecting unit is in the second direction of the core wire barrel excluding the bell mouth portion formed at the end portion of the core wire barrel in the imaging data of the end portion of the insulated wire imaged by the imaging unit. Detect width at multiple locations,
The inspection device according to claim 1 or 2. This is an inspection method for inspecting the connection state between an insulated wire and a crimp terminal crimped to the end of the insulated wire.
In the crimp terminal, the direction along the length direction of the insulated wire is defined as the first direction, and the direction intersecting the first direction is defined as the second direction.
The insulated wire includes a core wire and an insulating coating that covers the core wire.
The crimp terminal comprises a core wire barrel that is crimped to the core wire exposed from the insulation coating at the end of the insulated wire.
The end of the insulated wire is imaged and
In the imaged data of the end portion of the insulated wire, the width of the core wire barrel in the second direction is detected at a plurality of places.
Based on the width of the core wire barrel at a plurality of detected locations, the connection state between the insulated wire and the crimp terminal is inspected, and the connection state is inspected.
Inspecting the connection state between the insulated wire and the crimp terminal is based on whether or not the degree of variation in the widths of the plurality of detected core wire barrels exceeds a predetermined threshold value. Is to inspect the connection state between the crimp terminal and the crimp terminal.
Inspection methods.

Images