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KR101742260B1 - auto conveying type vision inspection device for a harness - Google Patents

auto conveying type vision inspection device for a harness Download PDF

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Publication number
KR101742260B1
KR101742260B1 KR1020150095119A KR20150095119A KR101742260B1 KR 101742260 B1 KR101742260 B1 KR 101742260B1 KR 1020150095119 A KR1020150095119 A KR 1020150095119A KR 20150095119 A KR20150095119 A KR 20150095119A KR 101742260 B1 KR101742260 B1 KR 101742260B1
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KR
South Korea
Prior art keywords
harness
conveyor belt
vision
identification
defective
Prior art date
Application number
KR1020150095119A
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Korean (ko)
Other versions
KR20170004576A (en
Inventor
조호상
이상용
Original Assignee
경남대학교 산학협력단
아몽솔루션(주)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 경남대학교 산학협력단, 아몽솔루션(주) filed Critical 경남대학교 산학협력단
Priority to KR1020150095119A priority Critical patent/KR101742260B1/en
Publication of KR20170004576A publication Critical patent/KR20170004576A/en
Application granted granted Critical
Publication of KR101742260B1 publication Critical patent/KR101742260B1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/08—Locating faults in cables, transmission lines, or networks
    • G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
    • G01R31/083—Locating faults in cables, transmission lines, or networks according to type of conductors in cables, e.g. underground
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/85—Investigating moving fluids or granular solids
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01R31/022—
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/36—Insulated conductors or cables characterised by their form with distinguishing or length marks

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Abstract

The present invention relates to a harness vision inspection apparatus including a transport section, a dark room chamber, a vision camera, an illumination section and a controller section, wherein the transport section includes a conveyor belt and the vision camera is transported by the conveyor belt It is possible to correctly identify each wire of the harness by improving the shape of the surface of the conveyor belt while allowing the controller section to inspect whether the defect is detected after the harness is photographed.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic conveying type vision inspection apparatus for a harness,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a vision inspection apparatus, and more particularly, to an automatic transfer type harness vision inspection apparatus according to a new type that can accurately check whether a harness to be inspected is continuously transferred.

In general, a harness is a part used for transmission of various signals or power supply while being applied to various devices such as a vehicle, a large-sized equipment, or a household appliance.

1, the harness includes a terminal portion for connection to a counterpart and a plurality of electric wires connected to the terminal portion. In the case of each of the electric wires, a variety of harnesses In addition, in the case of the terminal portion, letters such as various alphabets are indicated at connection portions of the respective wires.

However, since each wire of the harness causes an operation error or damage of the electronic product when the connection is made incorrectly, it is necessary to perform a defect inspection before shipment.

In the case of such a harness defect inspection, the inspection of the wiring error has usually been carried out by hand, but in the case of such a manual operation, there is a fear of occurrence of an error inspection due to an operator's optical illusion or carelessness during a large harness defect inspection .

In recent years, vision inspection for harnesses has been used to visually inspect various types of harnesses to check whether the wires are reversed, whether the pins are inserted or not, and whether the defective product is automatically sorted by inspecting the housing. And in this connection, it is as disclosed in Japanese Patent Application Nos. 10-515242, 10-515252, and 10-723967.

However, in the vision inspection apparatus for a harness, when a harness is inspected for defects, a harness including a black wire or a white wire has a problem that frequent errors are caused according to its color classification, There is a problem in that inspection failure is caused due to failure to grasp accurately.

That is, when the harness for vision inspection is photographed, the background portion of the harness is made of white, black, or a color which may confuse the confirmation of white and black. There was no such thing, and this led to errors in detection of defects.

Thus, in the prior art, the failure inspection of the harness can not be continuously performed, and only the failure can be performed individually, so that it takes a long time to perform the failure inspection.

SUMMARY OF THE INVENTION The present invention has been made in order to solve various problems of the prior art described above, and it is an object of the present invention to shorten the inspection time by continuously inspecting a harness to be inspected, The harness vision inspection apparatus according to the present invention is capable of minimizing the occurrence of inspection failures by making it possible to more clearly distinguish color for each wire.

According to another aspect of the present invention, there is provided an automatic transfer type harness vision inspection apparatus comprising: a conveyor belt having a plurality of identification lines for color identification of each wire of the harness, A dark room chamber provided with a dark room shielded from external light, and two through walls on the side of the harness in the conveying direction, through which the conveyor belt passes; A vision camera for capturing an image of a harness mounted on the conveyor belt and being transported while being installed in the darkroom chamber; An illumination unit installed in the darkroom chamber to provide illumination to a photographed portion of the vision camera; And a controller unit for reading an image photographed by the vision camera and checking whether the harness is defective or not.

Here, the identification line formed on the surface of the conveyor belt is formed by alternately repeating the conveyance direction of the harness while being composed of a black identification line and a white identification line.

The controller may further include a sensor for detecting a harness conveyed on the conveyor belt. The controller counts the quantity of inspection based on the detection of the harness by the detection sensor, And the position is recognized and programmed to be performed.

Further, the surface of the conveyor belt is further provided with a take-out portion for taking out the harness determined to be defective.

The take-out part is disposed on the surface of the conveyor belt so that the take-out part is positioned so as to intercept a harness conveyed on the surface of the conveyor belt. The other end of the take-out part is inclined so as to face the outer side of the conveyor belt. Or an elevating cylinder for elevating the elevating cylinder so as to be spaced apart from the elevating cylinder.

As described above, the automatic transfer type harness vision inspection apparatus of the present invention shoots the harness conveyed by the conveyor belt and accurately determines the connection failure, the connection position failure, the character color defect, and the character notation for the harness So that continuous operation is possible and the inspection time can be shortened.

Particularly, the automatic transfer type harness vision inspection apparatus of the present invention can more clearly distinguish color for each wire by the darkroom chamber and each identification line formed on the conveyor belt, thereby minimizing the occurrence of inspection failure .

1 is a plan view illustrating a general structure of a harness;
FIG. 2 is a schematic view of a device for testing an automatic transfer type harness vision inspection apparatus according to an embodiment of the present invention.
3 is a front view schematically shown for explaining an automatic transfer type harness vision inspection apparatus according to an embodiment of the present invention.
FIG. 4 is a state diagram for explaining the operation state of the curtain film by the elevating cylinder among the automatic transfer type harness vision inspection apparatus according to the embodiment of the present invention.
5 is a plan view schematically showing an automatic transfer type harness vision inspection apparatus according to an embodiment of the present invention.

Hereinafter, a preferred embodiment of the automatic transfer type harness vision inspection apparatus of the present invention will be described with reference to FIGS. 2 to 5.

Prior to the description of the embodiment, the automatic transfer type harness vision inspection apparatus of the present invention is characterized in that it comprises a terminal portion 11 made of any one of the attached connector or the terminal, and a harness (not shown) made of a plurality of electric wires 12 connected to the terminal portion 11 10) is performed by the vision inspection. At this time, the electric wires 12 are formed to have respective intrinsic colors, and these colors are provided in at least two or more different colors.

FIG. 2 is a schematic view illustrating an automatic transfer type harness vision inspection apparatus according to an embodiment of the present invention. FIG. 3 is a schematic view illustrating an automatic transfer type harness vision inspection apparatus according to an embodiment of the present invention. 4 is a state view for explaining the operation state of the thin film by the lifting cylinder in the automatic transfer type harness vision inspection apparatus according to the embodiment of the present invention, and FIG. 5 is a view Fig. 3 is a plan view schematically showing an automatic transfer type harness vision inspection apparatus according to an example.

As shown in these drawings, an automatic transfer type harness vision inspection apparatus according to an embodiment of the present invention includes a transfer unit 100, a dark chamber 200, a vision camera 300, an illumination unit 400, And the conveyance unit 100 includes a conveyor belt 120. The vision camera 300 includes a conveyor belt 120 which is conveyed by the conveyor belt 120, The identification of each wire of the harness 10 can be accurately performed by improving the surface shape of the conveyor belt 120 while allowing the controller unit 500 to check whether or not the wire is defective .

This will be described in more detail below for each configuration.

First, the carry section 100 is a portion for carrying the harness 10.

The conveyor unit 100 includes a main frame 110 constituting a body, a conveyor belt 120 installed along the upper surface of the main frame 110 and conveyed with the harness 10 placed thereon, And a belt-type conveyor including a drive roller 131 and a driven roller 132 for the operation of the belt 120.

Particularly, in the embodiment of the present invention, a plurality of identification lines 121 and 122 are formed on the surface of the conveyor belt 120.

The plurality of identification lines 121 and 122 may be printed on the surface of the conveyor belt 120 for color identification of each wire 12 of the harness 10 or may be tape- And is composed of an identification line 121 of black and an identification line 122 of white color.

Particularly, the plurality of identification lines 121 and 122 are arranged to be arranged according to the seating direction of the harness. In the embodiment of the present invention, the wire drawing direction of the harness is seated in the same direction as the conveying direction, And the identification lines are formed alternately and repeatedly along the conveying direction of the harness 10 as an example.

That is, when printing is performed only on identification lines 121 and 122 of any one of the black identification line 121 or the white identification line 122, the black or white wire 12 constituting the harness 10, There is a possibility that a judgment error may be generated according to the identification of the wire of any color, and in consideration of the characteristic of each wire 12, there is a case where the wire is bent not to be formed straightly in the longitudinal direction but to the left or to the right The above-described black and white identification lines 121 and 122 are repeatedly arranged along the conveying direction of the harness 10 because there is a possibility that a judgment error is made as to whether the wire 12 is in a bent state or not, So that judgment errors can be prevented by printing them in parallel with each other.

Although the identification lines 121 and 122 may be formed over the entire area of the conveyor belt 120, the identification lines 121 and 122 may be formed on a portion corresponding to the photographing area of the vision camera 300 Only the identification lines 121 and 122 may be formed.

Next, the dark room chamber 200 is a site for providing a dark room shielded from external light.

That is, when the harness 10 is photographed in a place exposed to the external environment, disturbance due to light scattering or light of various colors occurs due to external illumination or the like, so that accurate color discrimination of each wire 12 can not be performed, The imaging of the harness 10 may be performed in the dark room 200 blocked from the external illumination so that the characters and angles displayed on the terminal portion 11 of the harness 10 So that accurate color classification of the wire 12 is possible.

The dark room chamber 200 is formed as a box body forming a space blocked from external illumination and is installed at a center side portion of the conveyor belt 120 constituting the carry section 100.

Particularly, through-holes 210 and 220 are respectively formed in two wall surfaces (left and right side wall surfaces as viewed from the reference in FIG. 2) positioned on the conveying direction side of the harness 10 among the respective wall surfaces of the above described dark room chamber 200, The conveyor belt 120 is configured to pass through the dark room chamber 200 through the through holes 210 and 220.

The through holes 210 and 220 are formed to have a height in consideration of the thickness of the harness 10 carried on the upper surface of the conveyor belt 120. Through the through holes 210 and 220, Thereby minimizing the spread of external light to the space.

Next, the vision camera 300 is a device for photographing an image of the harness 10 carried on the conveyor belt 120.

The vision camera 300 is mounted on the conveyor belt 120 so as to be positioned in a space directly above the harness 10 which is placed on the conveyor belt 120 and is transported, So that the terminal portion 11 and the wires 12 of the harness 10 can be collectively photographed.

Next, the illumination unit 400 is a region for providing illumination to a photographed portion of the vision camera 300. [

The illuminating unit 400 is installed in the darkroom chamber 200 and is positioned at the harness carry-in side and the harness carry-out side in the darkroom chamber 200, respectively, as viewed from the transport direction of the harness 10, It is most preferable because it is possible to minimize the generation of shadows.

In addition, the illumination unit 400 is composed of an LED lamp, and is most preferably but not limited to be capable of irradiating uniform light to a specific point.

Next, the controller unit 500 reads an image photographed by the vision camera 300 and checks whether the harness 10 is defective.

The controller unit 500 has a reading program for receiving the image photographed from the vision camera 300 to read each component (terminal portion and each electric wire) in the set region, And an AdaBoost classifier for recognizing and classifying the colors of the respective components.

Particularly, in the embodiment of the present invention, the sensing unit 600 further includes a sensing sensor 600 for sensing the harness 10 carried on the conveyor belt 120 in the dark room chamber 200, It is further prospected that the inspection quantity is counted based on the detection of the harness 10 by the detection sensor 600 and that the position of the harness 10 determined to be defective is programmed. The sensing sensor 600 may be provided on at least one of a harness bring-in side, a harness photographing site, and a harness take-out side in the dark room chamber 200.

In addition, in the embodiment of the present invention, it is shown that the surface of the conveyor belt 120 is further provided with a take-out part 700 for taking out the harness 10 judged to be defective.

That is, the operator does not discharge the harness 10 at the time of reading the failure of the specific harness 10 through the additional provision of the take-out unit 700, but the discharge of the harness 10 by the take- Is automatically performed.

The take-out part 700 is positioned such that one end of the take-out part 700 is placed on the surface of the conveyor belt 120 so as to intercept the harness 10 to be conveyed and the other end is inclined toward the outer side of the conveyor belt 120. And an elevating cylinder 720 for elevating and lowering the curtain film 710 adjacent to or spaced from the surface of the conveyor belt 120. [

The reference numeral 510 is a device for displaying an image photographed by the vision camera 300 as a monitor or displaying information about a defect read by the controller unit 500.

Hereinafter, the process of determining the failure of the harness 10 using the automatic transfer type harness vision inspection apparatus according to the embodiment of the present invention will be described in detail.

First, the operator determines the type of the harness 10 to be inspected, and then inputs the determined type to the controller unit 500. [

Accordingly, the controller unit 500 acquires the color or character of each part of the normal harness 10 based on the input information, and determines a criterion for the failure of the harness 10 based on the obtained color or character. The color of each part of the harness 10 is a color of a position of each wire 12 constituting the harness 10 and a character of each part of the harness 10 is a color of a terminal part constituting the harness 10, And the color of this character.

When the initial preparation is completed, the operator places the harness 10 to be inspected on the upper surface of the conveyor belt 120.

At this time, the harness 10 is positioned so that the terminal portions 11 are positioned forwardly with respect to the carrying direction side, and the harnesses 10 are positioned so as to be positioned rearward, So as to be perpendicular to the identification lines 121 and 122 formed on the surface of the belt 120.

The conveyor belt 120 rotates repeatedly under the guidance of the drive roller 131 and the driven roller 132 by driving the drive roller 131 constituting the carry section 100 in this state, The conveyance of the harness 10 placed on the upper surface of the conveyor belt 120 is carried out.

When the harness 10 is conveyed by the operation of the conveyor belt 120 and the harness 10 passes through the through hole 210 of the darkroom chamber 200 and enters the darkroom chamber 200 The sensing by the sensing sensor is performed, illumination is provided by the illumination unit 400, and the vision camera 300 is taken.

In addition, the image photographed by the vision camera 300 is supplied to the controller unit 500, and the controller unit 500 checks whether the characters displayed on the terminal unit 11 of the harness are defective based on the image data. And the presence or absence of each wire 12 and the positional inspection are successively performed, thereby reading whether or not the harness 10 is defective.

That is, the controller unit 500 divides the area of the terminal unit 11 by the number of pins (the number of electric wires), stores the divided area coordinate values, and controls the electric wires 12 to correspond to the coordinate values. If there is no electric wire 12, it is determined that the electric wire 12 is empty. Then, the electric wires 12 are checked for correctness with respect to each electric wire 12 by reading the hue will be.

The image captured by the vision camera 300 when determining the presence or color of the electric wire 12 includes a black identification line 121 and a white identification line 122 on the surface of the conveyor belt 120, Since the identification lines 121 and 122 are sequentially disposed across the electric wire 12, the controller unit 500 controls the position of each electric wire 12 through the photographed image, And the color can be accurately judged.

When the controller 500 determines whether the harness 10 is defective or not, the harness 10 is selectively ejected from the harness 10 based on the read result, .

That is, when the harness 10 is normal as a result of the reading by the controller unit 500, the take-out unit 700 is not operated and is moved to the other end side of the conveyor belt 120 in a state of being laid on the conveyor belt 120 When the harness 10 is defective as a result of the controller 500 reading the harness 10, the take-out unit 700 is operated and the harness 10, which is carried on the conveyor belt 120 and carried out, (Forward in the drawing) of the conveyor belt 120 when the conveyor belt 710 is intercepted.

In addition, information on the failure of the harness 10 read by the controller unit 500 as described above is displayed through the monitor 510 so that the operator can easily recognize the information.

As a result, the automatic transfer type harness vision inspection apparatus of the present invention photographs the harness 10 conveyed by the conveyor belt 120 to check the connection failure, connection position defect, character color defect, bad character display It is possible to perform a continuous operation and to shorten the inspection time.

Particularly, in the automatic transfer type harness vision inspection apparatus of the present invention, color discrimination for each electric wire 12 can be more clearly made by the identification lines 121 and 122 formed on the conveyor belt 120, So that it can be minimized.

Meanwhile, the automatic transfer type harness vision inspection apparatus of the present invention is not limited to the embodiment described above.

For example, the case of the take-out unit 700 may be omitted. In this case, if the failure of the harness 10 is read, the conveyor belt 120 may be temporarily stopped to be taken out by the operator.

In addition, the take-out part 700 can be formed in various structures different from the structures of the above-described embodiments.

When the sensing unit 600 detects the harness 10, the controller unit 500 is preferably programmed to count the number of the harnesses 10 inspected based on the sensing signal of the sensing sensor 600 It is preferable that the harness 10 judged to be defective also allows the quantity thereof to be counted.

As described above, the automatic transfer type harness vision inspection apparatus of the present invention is a useful invention that can be modified into various forms.

10. Harness 11. Terminal
12. Wire 100. Carrier
110. Main frame 120. Conveyor belt
121, 122. Identification line 131. Drive roller
132. Follower roller 200. Darkroom chamber
210, 220. Passing Ball 300. Vision Camera
400. Illumination part 500. Controller part
510. Monitor 600. Detection sensor
700. Blowing section 710. Shielding film
720. Lifting cylinder

Claims (5)

An automatic transfer harness vision inspection apparatus for defect inspection of a harness comprising a terminal portion and a plurality of electric wires connected to the terminal portion,
And a plurality of identification lines for color identification of each wire of the harness are formed on a surface of the conveyor belt;
A dark room chamber provided with a dark room shielded from external light, and two through walls on the side of the harness in the conveying direction, through which the conveyor belt passes;
A vision camera for capturing an image of a harness mounted on the conveyor belt and being transported while being installed in the darkroom chamber;
An illumination unit installed in the darkroom chamber to provide illumination to a photographed portion of the vision camera; And,
And a controller unit for reading an image photographed by the vision camera and checking whether the harness is defective,
Wherein the identification line formed on the surface of the conveyor belt is formed by alternately repeating the conveyance direction of the harness while being composed of a black identification line and a white identification line. delete The method according to claim 1,
And a sensing sensor for sensing a harness conveyed on the conveyor belt is further provided in the darkroom chamber,
Wherein the controller unit is programmed to count the number of inspection units based on the detection of the harness by the detection sensor and to determine whether the harness is determined to be defective. 4. The method according to any one of claims 1 to 3,
Further comprising a take-out portion for taking out the harness determined to be defective on the surface of the conveyor belt. 5. The method of claim 4,
The take-
A shielding film which is positioned so as to intercept a harness conveyed on the surface of the conveyor belt at one end and is inclined to the outside of the conveyor belt at the other end,
And an elevating cylinder for elevating and lowering the curtain film adjacent to or spaced from the surface of the conveyor belt.
KR1020150095119A 2015-07-03 2015-07-03 auto conveying type vision inspection device for a harness KR101742260B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150095119A KR101742260B1 (en) 2015-07-03 2015-07-03 auto conveying type vision inspection device for a harness

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150095119A KR101742260B1 (en) 2015-07-03 2015-07-03 auto conveying type vision inspection device for a harness

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KR20170004576A KR20170004576A (en) 2017-01-11
KR101742260B1 true KR101742260B1 (en) 2017-05-31

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Publication number Priority date Publication date Assignee Title
KR102191704B1 (en) 2019-06-05 2020-12-17 (주)미래테크원 cable harness inspection method based on machine vision

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101265923B1 (en) * 2011-11-21 2013-05-20 금오공과대학교 산학협력단 Automatic inspection system for plc chip

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101265923B1 (en) * 2011-11-21 2013-05-20 금오공과대학교 산학협력단 Automatic inspection system for plc chip

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