KR20170027482A - Apparatus for internal inspection of pipe - Google Patents

Apparatus for internal inspection of pipe Download PDF

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Publication number
KR20170027482A
KR20170027482A KR1020150124145A KR20150124145A KR20170027482A KR 20170027482 A KR20170027482 A KR 20170027482A KR 1020150124145 A KR1020150124145 A KR 1020150124145A KR 20150124145 A KR20150124145 A KR 20150124145A KR 20170027482 A KR20170027482 A KR 20170027482A
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KR
South Korea
Prior art keywords
specimen
light source
tube
case
holder
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KR1020150124145A
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Korean (ko)
Inventor
성용기
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성현엠엔티(주)
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Priority to KR1020150124145A priority Critical patent/KR20170027482A/en
Publication of KR20170027482A publication Critical patent/KR20170027482A/en

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    • 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
    • G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G01N21/954—Inspecting the inner surface of hollow bodies, e.g. bores
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • 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
    • G01N21/8806—Specially adapted optical and illumination features
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/0002—Inspection of images, e.g. flaw detection
    • G06T7/0004—Industrial image inspection
    • 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
    • G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G01N21/954—Inspecting the inner surface of hollow bodies, e.g. bores
    • G01N2021/9542—Inspecting the inner surface of hollow bodies, e.g. bores using a probe
    • G01N2021/9546—Inspecting the inner surface of hollow bodies, e.g. bores using a probe with remote light transmitting, e.g. optical fibres
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2201/00—Features of devices classified in G01N21/00
    • G01N2201/06—Illumination; Optics
    • G01N2201/063—Illuminating optical parts
    • G01N2201/0636—Reflectors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2201/00—Features of devices classified in G01N21/00
    • G01N2201/08—Optical fibres; light guides
    • G01N2201/0826—Fibre array at source, distributing
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10004—Still image; Photographic image

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  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Pathology (AREA)
  • Analytical Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quality & Reliability (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Theoretical Computer Science (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Abstract

More particularly, the present invention relates to an apparatus for inspecting an inner surface of a tube by detecting a reflected light source by irradiating a light source on an inner surface of the tube, A tube having inspecting means inserted at the bottom of the tube so as to be able to selectively inspect the inner surface and the bottom surface of the tube, To an inner surface inspection apparatus.

Description

[0001] APPARATUS FOR INTERNAL INSPECTION OF PIPE [0002]

More particularly, the present invention relates to an apparatus for inspecting an inner surface of a tube by detecting a reflected light source by irradiating a light source on an inner surface of the tube, A tube having inspecting means inserted at the bottom of the tube so as to be able to selectively inspect the inner surface and the bottom surface of the tube, To an inner surface inspection apparatus.

Generally, various structures having a hollow tube structure such as an engine, a boiler, a pipe, a heat exchanger, a tube, a generator, a cylinder, a container, and a tank are installed on the outside without inspecting, And inspect it by inserting it into the hole.

In a specific method of the conventional inspection apparatus, the tip of the inspection apparatus is inserted into the hole, the light is irradiated, and the image is acquired through the camera to check the condition of the inner wall of the hollow tube. The degree of contamination, scratching, and the state of plating and the presence or absence of chips remaining on the inner wall of the hollow tube when the hollow tube is processed are usually inspected using a hollow tube inner wall inspection apparatus.

Such a conventional inspection apparatus has a problem in that it is not suitable for precisely inspecting the state of the inner wall of the hollow tube because the lens has a structure provided in front of the tip of the guide tube.

Also, since the inspection apparatus is constructed so as to be inserted from the upper end of the hollow tube, the light source of the main beam or the lamp is irradiated into the hollow tube as a gap between the hollow tube and the inspection apparatus. Therefore, there arises a problem that the light source of the main beam or the lamp irradiated on the inner wall of the hollow tube is reflected on the inner surface of the hollow tube, so that the inner wall of the hollow tube can not be inspected.

It is necessary to develop a tube inner surface inspection apparatus which can measure the state of the inner wall of the hollow tube more accurately and precisely because the light source of the main light or the lamp can not be irradiated into the hollow tube for the measurement .

1. Published Japanese Patent Application No. 10-2013-0103454 " Cylinder Inspection Device " (Publication date 2013.09.23) 2. Open Patent Application No. 10-2011-0111144 'Defect Inspection Apparatus' (Published Oct. 10, 2011)

The object of the present invention is to solve the above-mentioned problems, and it is an object of the present invention to provide a tube capable of measuring a defect on the inner surface of a pipe by irradiating a light source to a hollow tube inner wall, And an inner surface inspection apparatus.

Another object of the present invention is to prevent a light source other than the inspection light source from being irradiated into the tube to be measured, thereby preventing distortion of the reflected light source and obtaining a clear image of the defect The present invention is to provide an inspection apparatus for an inner tube of a pipe.

The tube inner surface inspection apparatus of the present invention comprises a case 100 in which a receiving space S is formed; A specimen holder 200 slidable in a horizontal direction on the upper surface of the case 100 and having a guide hole 210 formed thereon in a vertical direction and a specimen T is seated on an edge of the guide hole 210; Is inserted into the receiving space S of the case 100 and inserted into the lower end of the test piece T through the guide hole 210 to move the inner side of the test piece T upward and downward First inspection means (300); And is disposed on both sides of the specimen holder 200 and is folded along the specimen holder 200 to prevent the light source from entering the accommodation space S and the specimen T, A cover 400 for sealing the upper surface of the cover 400; And a cradle moving part (500) for moving the specimen cradle (200) so that the guide hole (210) is positioned on the same vertical line as the first inspection means (300)

The first inspection means 300 is inserted into the lower end of the specimen T so as to emit a light source to the inner surface of the specimen T and detects the first An optical device 310; A first actuator 320 for moving the first optical device 310 in a vertical direction; A first bracket 330 supporting the first actuator 320 and mounted on a lower surface of the case 100; And a control sensor (340) for sensing the movement of the first optical mechanism (310) to control the operation of the first actuator (320) to limit the up and down movement range of the first optical mechanism (310) .

In addition, the first optical device 310 of the present invention may include a light generator 311 through which a light source is emitted;

An inspection tube (312) having an optical fiber (312-1) for receiving a light source emitted from the light generator (311); A diffuser 313 provided at an end of the inspection tube 312 for irradiating the light source received from the optical fiber 312-1 to the inner surface of the specimen T; A reflecting mirror 314 positioned above the diffuser 313 and reflecting the light reflected from the inner surface of the specimen T in the same direction as the direction of the inspection tube 312; And a camera 315 for capturing an image of a light source reflected by the reflection mirror 314,

The cradle moving part 500 is formed on the upper surface of the case 100 and includes a horizontal moving rail 510 for guiding movement of the specimen cradle 200; A screw 520 extending in the same direction as the horizontal movement rail 510; A screw motor 530 formed at one end of the screw 520 and operated by receiving power from the outside so as to rotate the screw 520 in one direction or the other direction; And a mover 540 through which the screw 520 is pierced and one side of which is coupled to the specimen holder 200 so as to move the specimen holder 200 in one direction and the other direction in accordance with the rotation direction of the screw 520 .

The holder moving part 500 further includes a position guiding part 550 formed on the upper surface of the case 100 to control the movement of the specimen holder 200, An indicator 551 that moves integrally with the cradle 200; The operation of the screw motor 530 is controlled such that the guide hole 510 and the first inspection means 300 are positioned on the same vertical line when the position of the indicator 551 is detected by being connected to the screw motor 530 And a sensing sensor 552 for controlling the sensor.

A second inspection means 600 for inspecting defects on the inner bottom surface of the specimen T is formed in the case 100. The second inspection means 600 is installed in the case 100, The specimen holder 200 may be moved so as to be positioned on the same vertical line as the second inspection means 600 so as to be inserted into the lower end of the specimen T through the guide hole 210,

The second inspecting means 600 is arranged to inspect the light source reflected from the inner bottom surface of the specimen T and inserted into the inner surface of the specimen T so as to emit the light source to the inner bottom surface of the specimen T A second optical mechanism 610; A second actuator 620 for moving the second optical mechanism 610 in a vertical direction; A second bracket 630 for supporting the second actuator 620 and mounted on a lower surface of the case 100; And a control sensor 340 for sensing the movement of the second optical mechanism 610 and controlling the operation of the second actuator 620 so as to limit the up and down movement range of the second optical mechanism 610 .

The present invention can provide a clear image of a defect in the inner wall of a hollow tube and provide the clear image to a user and prevent the unnecessary light source from entering the tube and distorting the image as the inspecting means is inserted into the lower end of the hollow tube There is an advantage.

According to the present invention, a first inspection means capable of measuring the inner surface of the tube and a second inspection means capable of measuring the inner bottom surface of the hollow tube are provided in one body, It is possible to measure whether or not the defects are present.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an overall structure of an inner tube inspection apparatus of the present invention. FIG.
2 is a perspective view showing a first inspection means, a second inspection means, and a cradle moving unit of the present invention;
3 is a perspective view showing a moving method of the specimen holder according to the present invention.
4 is a partial perspective view showing the main configuration of the first and second inspection means of the present invention;
5 is a side cross-sectional view showing an incision of a part of the first optical mechanism to show the operating state of the first optical mechanism of the present invention.
6 is a view showing an image of an inner side of a sample of the present invention taken;
FIG. 7 is a view showing a composite image obtained by correcting an image of a photographed image according to the present invention; FIG.
8 is a diagram showing a procedure for detecting the presence or absence of a defect in a photographed image.

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

2 is a perspective view showing a first inspection means, a second inspection means, and a cradle moving unit according to the present invention; Fig. 3 is a perspective view showing a method of moving the specimen cradle of the present invention Fig. 4 is a partial perspective view showing the main configuration of the first and second examining means of the present invention, Fig. 5 is a perspective view showing a part of the first optical mechanism in order to show the operating state of the first optical mechanism of the present invention, To a side sectional view shown in Fig.

Referring to FIG. 1, the apparatus for inspecting an inner surface of a tube of the present invention corresponds to a device capable of photographing the presence or absence of a defect on the inner surface of a specimen T having a hollow tube shape and an open surface. The pipe inner surface inspection apparatus of the present invention as described above has a case 100. The case 100 is formed with a receiving space S in which a first inspecting means 300, which will be described later, is provided. A driving wheel and a stopper for moving the case 100 may be formed on the bottom surface of the case 100.

Referring to FIG. 1, a specimen holder 200 is provided on an upper surface of a case 100. The specimen holder 200 is provided with a guide hole 210 passing through the specimen holder 200 in the up-and-down direction. The specimen holder 200 includes a guide hole 210, (T) is seated. At this time, in order to prevent the unnecessary light source from flowing into the specimen T, the open portion of the specimen T is seated so as to communicate with the guide hole 210 so as to face the upper surface of the case 100.

Referring to FIGS. 1 and 2, the first inspection means 300 is provided in the receiving space S of the case 100. The first inspection means 300 is inserted into the lower end of the specimen T through the guide hole 210 to check whether the inner surface of the specimen T seated in the guide hole 210 has a defect, ) Is inspected. At this time, the first inspection means 300 is configured to be movable up and down to inspect the entire surface of the inner surface of the specimen T. That is, the first inspection means 300 is located at the upper end of the specimen T and gradually moves downward to measure the presence or absence of the defect on the inner surface of the specimen T.

Referring to FIGS. 1 and 3, a cover 400 for covering an upper surface of the case 100 and preventing an unnecessary external light source from entering the specimen T and the accommodation space S is provided. The dark cover 400 is installed on both sides of the specimen holder 200, and the specimen holder 200 is folded as it moves left and right. The black cover 400 is preferably made of a corrugated pipe or a flexible material.

At this time, a holder moving part 500 for moving the specimen holder 200 is additionally provided inside the case 100. When the first inspection means 300 located inside the case 100 moves upward, the first inspection means 300 and the guide hole 210 are positioned on the same vertical line, The sample holder 200 is moved so that the sample holder 300 can be smoothly moved. At this time, the black cover 400 may be folded according to the movement of the specimen holder 200 provided on both sides.

Referring to FIG. 4, the first inspection means 300 includes a first optical device 310, a first actuator 320, a first bracket 330, and a control sensor 340. The first optical mechanism 310 emits the light source to the inner surface of the specimen T and then the emitted light source is reflected on the inner surface of the specimen T and analyzes the light source incident on the first optical mechanism 310 And corresponds to a device capable of determining the presence or absence of defects on the inner surface of the specimen T. To this end, the first optical device 310 is inserted into the lower end of the specimen T. [

The first actuator 320 provides power for moving the first optical device 310 in the vertical direction. That is, the first actuator 320 and the first optical mechanism 310 are coupled to each other, and move the first optical mechanism 310 in the vertical direction by using hydraulic pressure, pneumatic pressure, electric motor, or the like.

The first bracket 330 is mounted on the lower surface of the case 100 so that the first actuator 320 and the first optical mechanism 310 can be positioned in the accommodation space S of the case 100, The first actuator 320 is fixed to the first actuator 320 to support the first actuator 320.

The control sensor 340 has a purpose of limiting the up-and-down movement range of the first optical device 310. [ The control sensor 340 and the first actuator 320 are electrically connected to each other and can control the operation of the first actuator 320 by operating the control sensor 340. That is, when the control sensor 340 senses the movement of the first optical device 310 and the distance that the first optical device 310 moves upward in accordance with the movement of the sensed first optical device 310, And a distance moving in the direction of the vehicle.

4 and 5, the first optical device 310 includes a light generator 311, an inspection tube 312, a diffuser 313, a reflection mirror 314, and a camera 315.

The light generator 311 generates a light source from the LED module provided therein and emits the light source to the outside.

One side of the inspection tube 312 is inserted into the specimen T and an optical fiber 312-1 receiving the light source emitted from the light generator 311 is provided therein.

The diffuser 313 is provided at the end of the inspection tube 312 inserted into the specimen T and refracts the light source received from the optical fiber 312-1 in the direction of the inner side of the specimen T to irradiate the specimen.

The reflection mirror 314 is disposed at an end of the inspection tube 312 at a predetermined distance from the diffuser 313 and reflects the light reflected by the inner surface of the specimen T in the same direction as the inspection tube 312 And has a conical shape whose pointed direction is directed toward the ground.

The camera 315 corresponds to a device for capturing an image of a light source reflected by the reflection mirror 341 and flowing into the inspection pipe 312, and combines the captured images and provides the images to the user. At this time, a focus adjustment screw 215-1 for adjusting the focus of the camera may be provided at one side of the camera 315. [

6 shows a photograph taken by the camera 315 of a light source reflected from the specimen T. As shown in Fig. The camera 315 obtains an image extracted by the reflecting mirror 341 in the donut form from the light source reflected from the inner side of the specimen T. [ It is preferable to use the edge portion of the acquired image because the image of the donut-shaped image is precise in the outer circumference data.

7 corresponds to a photograph synthesizing the inner surface of the specimen T extracted using the donut shape image. This can be achieved by taking the data of the outermost image of the donut shape, then dividing the image into a curved shape, and then rotating and rotating the image. When the size of the image is adjusted, a plane image coinciding with the scale of the extracted image is obtained. It is possible to confirm whether or not a defect exists in the plane image thus obtained.

FIG. 8 shows a procedure for detecting a defect in the obtained plane image. First, an image of a region suspected of being defective is obtained from the plane image, and then converted into an image of a black and white image. Then, the user removes the intermediate brightness value of the black and white image, Can be detected.

Accordingly, as shown in the figure, the reflected light source is photographed by the camera 315, the image acquired by using the separate software is corrected, and the corrected image is provided to the user, thereby confirming whether or not the defect exists in the specimen T .

 Referring to FIGS. 2 and 4, the lifting unit 500 includes a horizontal moving rail 510, a screw 520, a screw motor 530, and a mover 540. The horizontal moving rail 510 is formed on the upper surface of the case 100 and extends in the same direction as the moving direction of the specimen holder 200.

The screw 520 extends in the same direction as the horizontal movement rail 510 and is rotatably installed inside the case 100. At this time, a screw motor 530 is provided at one end of the screw 520 to receive power from the outside. When the screw motor 530 is operated, the screw 520 can rotate in one direction and the other direction. The screw motor 530 is preferably composed of a stepper motor, a servo motor or the like capable of rotating in the forward and reverse directions.

The mover 540 is fastened to the screw 520 so that the screw 520 penetrates and moves in one direction and the other direction of the screw 520 in the direction of rotation of the screw 520 (direction of movement of the specimen holder 200) . At this time, the mover 540 and the specimen holder 200 are mutually engaged to move the specimen holder 200 while the mover 540 moves.

Referring to FIGS. 2 and 3, the holder moving part 500 further includes a position guiding part 550 formed on the upper surface of the case 100 to control the movement of the specimen holder 200.

The position guiding unit 550 includes an indicator 551 fastened to the specimen holder 200 and moved integrally with the specimen holder 200. The indicator 551 is preferably positioned on the same horizontal line as the guide hole 210. The position guiding unit 550 includes a sensing sensor 552 that senses the movement of the indicator 551 and controls the movement of the screw motor 530. The sensing sensor 552 includes a first inspecting unit 300, And is fixed on the upper surface of the case 100 so as to be positioned on the same horizontal line as the case 100. When the specimen holder 200 moves and the sensor 552 senses the indicator 551 and stops the operation of the screw motor 530, the guide hole 510 and the first inspection means 300 are placed on the same vertical line Lt; / RTI >

Referring to FIGS. 1 to 4, a second inspection means 600 for inspecting defects on the inner bottom surface of the specimen T is formed in the case 100. When the second inspecting means 600 is inserted into the lower end of the test piece T mounted on the guide hole 210, the second inspecting means 600 moves in the same vertical direction as the guide hole 210, It is possible to move the specimen holder 200 to be positioned on the line.

Referring to FIG. 4, the second inspection means 600 includes a second optical mechanism 610, a second actuator 620, a second bracket 630, and a control sensor 340. The second optical mechanism 610 reflects the light emitted from the light source to the bottom surface of the specimen T and reflects to the bottom surface of the specimen T so that the light source incident on the second optical mechanism 610 is reflected The presence or absence of defects on the inner surface of the specimen T can be determined. To this end, the second optical mechanism 610 is inserted into the lower end of the specimen T. [

The second actuator 620 is coupled to the second optical mechanism 610, and moves the second optical mechanism 610 in the vertical direction by using hydraulic pressure, pneumatic pressure, electric motor, or the like.

The second bracket 630 is mounted on the lower surface of the case 100 so that the second actuator 620 and the second optical mechanism 610 can be positioned in the accommodation space S of the case 100, The second actuator 620 is fixed. .

The control sensor 340 has a purpose of limiting the vertical moving distance of the second optical mechanism 610. And are electrically connected to each other to control the operation of the control sensor 340 and the second actuator 620. That is, the control sensor 340 senses the movement of the second optical device 610 and controls the distance that the second optical device 610 moves in the vertical direction in accordance with the movement of the sensed second optical device 610 can do.

100: Case 200: Specimen holder
210: guide hole 300: first inspection means
310: first optical device 311: light generator
312: Inspector 313: Diffuser
314: reflection mirror 315: camera
320: first actuator 330: first bracket
340: control sensor 400: black cover
500: Stowel 510: Horizontal moving rail
520: screw 530: screw motor
540: mover 550: positioning guide
551: indicator 552: detection sensor
600: second inspection means 610: second optical mechanism
620: second actuator 630: second bracket
T: Psalms

Claims (7)

A case 100 having a receiving space S formed therein;
A specimen holder 200 slidable in a horizontal direction on the upper surface of the case 100 and having a guide hole 210 formed thereon in a vertical direction and a specimen T is seated on an edge of the guide hole 210;
Is inserted into the receiving space S of the case 100 and inserted into the lower end of the test piece T through the guide hole 210 to move the inner side of the test piece T upward and downward First inspection means (300);
And is disposed on both sides of the specimen holder 200 and is folded along the specimen holder 200 to prevent the light source from entering the accommodation space S and the specimen T, A cover 400 for sealing the upper surface of the cover 400;
A holder moving part (500) for moving the specimen holder (200) so that the guide hole (210) is positioned on the same vertical line as the first inspection means (300);
And an inner surface of the tube. The method according to claim 1,
The first inspection means (300)
A first optical mechanism (310) inserted into the lower end of the specimen (T) so as to emit a light source to the inner side of the specimen (T) and imaging a light source reflected from the inner side of the specimen (T);
A first actuator 320 for moving the first optical device 310 in a vertical direction;
A first bracket 330 supporting the first actuator 320 and mounted on a lower surface of the case 100;
A control sensor 340 for sensing the movement of the first optical device 310 to control the operation of the first actuator 320 to limit the vertical movement range of the first optical device 310;
And an inner surface of the tube. 3. The method of claim 2,
The first optical mechanism (310)
A light generator 311 through which a light source is emitted;
An inspection tube (312) having an optical fiber (312-1) for receiving a light source emitted from the light generator (311);
A diffuser 313 provided at an end of the inspection tube 312 for irradiating the light source received from the optical fiber 312-1 to the inner surface of the specimen T;
A reflecting mirror 314 positioned above the diffuser 313 and reflecting the light reflected from the inner surface of the specimen T in the same direction as the direction of the inspection tube 312;
A camera 315 for capturing an image of a light source reflected by the reflection mirror 314;
And an inner surface of the tube. The method according to claim 1,
The holder moving part 500
A horizontal moving rail 510 formed on an upper surface of the case 100 to guide movement of the specimen holder 200;
A screw 520 extending in the same direction as the horizontal movement rail 510;
A screw motor 530 formed at one end of the screw 520 and operated by receiving power from the outside so as to rotate the screw 520 in one direction or the other direction;
A mover 540 through which the screw 520 is inserted and one side of which is coupled to the specimen holder 200 to move the specimen holder 200 in one direction and the other direction in accordance with the rotation direction of the screw 520;
And an inner surface of the tube. 5. The method of claim 4,
The holder moving part 500 further includes a position guiding part 550 formed on the upper surface of the case 100 to control movement of the specimen holder 200,
The position guiding unit 550 includes an indicator 551 that moves integrally with the specimen holder 200;
The operation of the screw motor 530 is controlled such that the guide hole 510 and the first inspection means 300 are positioned on the same vertical line when the position of the indicator 551 is detected by being connected to the screw motor 530 A sensing sensor 552 for controlling the sensor;
And an inner surface of the tube. The method according to claim 1,
In the case 100,
A second inspection means 600 for inspecting defects on the inner bottom surface of the specimen T is formed,
The cradle moving unit 500 is positioned on the same vertical line as the second inspection means 600 so that the second inspection means 600 is inserted into the lower end of the specimen T through the guide hole 210 And moves the specimen holder (200). The method according to claim 6,
The second inspection means (600)
A second optical mechanism (610) inserted into the inner surface of the specimen (T) to project the light source to the inner bottom surface of the specimen (T) and to image a light source reflected from the inner bottom surface of the specimen (T);
A second actuator 620 for moving the second optical mechanism 610 in a vertical direction;
A second bracket 630 for supporting the second actuator 620 and mounted on a lower surface of the case 100;
A control sensor 340 for sensing the movement of the second optical mechanism 610 to limit the vertical movement range of the second optical mechanism 610 and controlling the operation of the second actuator 620;
And an inner surface of the tube.
KR1020150124145A 2015-09-02 2015-09-02 Apparatus for internal inspection of pipe KR20170027482A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180130372A (en) 2017-05-29 2018-12-07 다래비젼주식회사 System to inspect component and method for inspecting component using the same
CN110726731A (en) * 2019-11-20 2020-01-24 苏州灵猴机器人有限公司 Small-caliber long straight pipe inner wall defect detection device
CN113406098A (en) * 2021-06-30 2021-09-17 浙江昊杨新能源科技有限公司 Device and method for detecting dirty marks on bottom shell and inner surface of battery plastic shell

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110111144A (en) 2010-04-02 2011-10-10 주식회사 쓰리비 시스템 Apparatus for inspecting defects
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KR20130103454A (en) 2013-07-04 2013-09-23 이영우 Apparatus for inspecting cylinder

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* Cited by examiner, † Cited by third party
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KR20180130372A (en) 2017-05-29 2018-12-07 다래비젼주식회사 System to inspect component and method for inspecting component using the same
CN110726731A (en) * 2019-11-20 2020-01-24 苏州灵猴机器人有限公司 Small-caliber long straight pipe inner wall defect detection device
CN113406098A (en) * 2021-06-30 2021-09-17 浙江昊杨新能源科技有限公司 Device and method for detecting dirty marks on bottom shell and inner surface of battery plastic shell
CN113406098B (en) * 2021-06-30 2024-02-06 浙江昊杨新能源科技有限公司 Device and method for detecting dirty marks on bottom shell and inner surface of battery plastic shell

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