KR102121685B1 - Defect part inspection apparatus - Google Patents

Abstract

The present invention provides a part defect inspection apparatus. According to embodiments of the present invention, the part defect inspection apparatus comprises: an object insertion unit into which a part for defect inspection is inserted; an inspection unit to use inspection light generated by an interaction with the part to inspect whether the part inserted into the object insertion unit is defective; a first light source unit which is formed on a lower side of the inspection unit, emits first light to discharge the first light to the object insertion unit, and transfers the inspection light transferred in the direction of the object insertion unit to the inspection unit; a second light source unit which is formed on a lower portion of the first light source unit, transfers the first light to the object insertion unit or emits second light to discharge the second light to the object insertion unit, and transfers the inspection light to the first light source unit; and a third light source unit which is formed on a lower portion of the object insertion unit, and emits third light towards the object insertion unit.

Description

Defect part inspection apparatus

The present invention relates to an inspection device for defective parts, and more particularly, to an inspection device capable of inspecting whether a small part such as an insert is defective using light.

In general, industrial components having a three-dimensional structure may include various types of cutting tools, ferrite magnets, end magnets, special bolts, special nuts, O-ring products, automobile parts, home appliance parts, forging parts, and coating parts. The quality control of these industrial parts is very important in the manufacturing process, and especially in the case of precision parts, more stringent quality control and analysis is required before distribution and export.

By inspecting defects in precision components, component manufacturers can eliminate, correct, or compensate for these defects prior to distribution and export of precision components. As the demand for high quality and high precision parts increases, the importance of inspecting precision parts in the entire manufacturing process of parts increases.

Republic of Korea Registered Patent No. 10-1733300

In order to solve the problems of the prior art as described above, an embodiment of the present invention is to provide a component defect inspection apparatus that can inspect whether a component is defective using light.

According to an aspect of the present invention for solving the above problems, a component defect inspection apparatus is provided. The component defect inspection apparatus includes: an object insertion unit into which a component for defect inspection is inserted; An inspection unit for inspecting whether the component inserted into the object insertion unit is defective by using inspection light generated through interaction with the component; A first light source unit formed on a lower side of the inspection unit, emitting the first light to emit the first light to the object insertion unit, and transmitting the inspection light transmitted in the direction of the object insertion unit to the inspection unit; It is formed on the lower portion of the first light source portion, transmits the first light to the object insertion portion or emits a second light to emit the second light to the object insertion portion, and transmits the inspection light to the first light source portion A second light source unit; And a third light source unit formed under the object insertion unit and emitting third light toward the object insertion unit.

The first light and the second light are formed using a red LED, and the third light can be formed using a blue LED.

The inspection light may include: a first inspection light formed such that the first light and the second light are reflected from the part to inspect a surface of the part; And a second inspection light that is partially blocked by the part to inspect the interface of the part.

The first light source unit may include a first light source module formed on one side of the first light source unit to generate the first light; A first polarization module that regularly arranges a traveling direction of the first light; A transflective module that changes the direction of travel of the first light passing through the first polarization module in the direction of the object insertion unit; And a first housing formed to protect the first light source module, the first polarization module, and the semi-transmissive module therein, wherein the first housing is formed under the first housing and A 1-1 light emission module that emits first light in the direction of the object insertion unit or receives the inspection light into the first housing; And a first or second light emission module formed on the first housing to emit the inspection light toward the inspection unit.

The second light source unit may include a plurality of second light source modules formed inside the second light source unit to generate the second light; And a second housing formed to include the second light source module therein to protect the plurality of second light source modules, wherein the second housing is formed under the second housing to form the first light. And a 2-1 light emitting module that emits a second light in the direction of the object insertion unit, or receives the inspection light into the interior of the second housing. And a 2-2 light emission module formed on an upper portion of the second housing to receive the first light into the second housing or to emit the inspection light in the direction of the second light source unit. .

The plurality of second light source modules may be stacked to form a layer structure, and each layer may be formed to emit the second light at different angles.

The plurality of second light source modules form at least a four-layer structure, and the second light source module of the first layer formed at the bottom is formed in a columnar shape, and may be formed to decrease inclination with the ground as the number of layers increases. have.

The second light source unit may further include a second polarization module for regularly arranging the traveling direction of the second light.

The third light source unit may include a third light source module formed inside the third light source unit to generate the third light; And a third housing formed to include the third light source module therein to protect the third light source module, wherein the third housing is formed on an upper portion of the third housing to receive the third light. It may include a; third light emitting module formed to emit in the direction of the object insertion portion.

The third housing may further include a second polarization module formed on one side of the third light emitting module to uniformly determine a direction in which the third light travels.

Part defect inspection apparatus according to an embodiment of the present invention, by using a plurality of light sources, by using the inspection light generated from various angles, there is an effect that can inspect the defect of the parts.

In addition, the component defect inspection apparatus according to an embodiment of the present invention has an effect of increasing the accuracy of the component defect inspection by aligning the direction of light travel.

1 is a view showing the structure of a component defect inspection apparatus according to an embodiment of the present invention.
2 is a view showing a (a) structure of the first light source unit and (b) a light traveling direction according to an embodiment of the present invention.
3 is a view showing the structure (a) and (b) the direction of light travel of the second light source unit according to an embodiment of the present invention.
4 is a view showing the form of (a) a stacked structure of a second light source module according to an embodiment of the present invention, (b) a second light source module having a slope, and (c) a second light source module having no slope. to be.
5 is a view showing a (a) structure and (b) a light traveling direction of a third light source unit according to an embodiment of the present invention.
6 is a view showing a result of light passing through a polarization module according to an embodiment of the present invention.
7 is a graph showing the metal surface spectral reflectance according to wavelength.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art to which the present invention pertains can easily practice. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. In the drawings, parts not related to the description are omitted in order to clearly describe the present invention, and the same reference numerals are attached to the same or similar elements throughout the specification.

1 is a view showing the structure of a component defect inspection apparatus according to an embodiment of the present invention, Figure 2 is a view showing a (a) structure of the first light source unit and (b) the direction of light travel according to an embodiment of the present invention 3 is a view showing the structure (a) of the second light source unit and (b) the direction in which light travels, and FIG. 4 shows (a) of the second light source module according to the embodiment of the present invention. ) Stacked structure, (b) a second light source module having a slope and (c) a second light source module having no slope, and FIG. 5 is a third light source unit according to an embodiment of the present invention. a) Structure and (b) is a diagram showing the direction of light travel, Figure 6 is a diagram showing the results of light passing through the polarization module according to an embodiment of the present invention, Figure 7 is a metal surface spectral reflectance according to the wavelength It is the graph shown.

Hereinafter, a component defect inspection apparatus according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 7.

Referring to Figure 1, the component defect inspection apparatus 100 according to an embodiment of the present invention, the inspection unit 110, the first light source unit 120, the second light source unit 130, the object insertion unit 140 and the first It is formed including a three light source unit 150.

The inspection unit 110 checks whether the parts are defective by using inspection light generated through interaction with the parts to be inspected. At this time, the component to be inspected may be a component inserted into the object insertion unit 140. In addition, the object insertion unit 140 may be formed between the second light source unit 130 and the third light source unit 150, which will be described later, as illustrated in FIG. 1.

The inspection light inspects one surface of the component by using the first light, the second light, and the third light generated by the first light source part 120, the second light source part 130, and the third light source part 150, respectively, which will be described later. It is formed to check boundaries.

At this time, the first light and the second light is reflected from the part, the inspection light formed to inspect the surface of the part is the first inspection light, and the third light is partially blocked by the part to inspect the interface of the part. The inspection light formed so as to be defined as the second inspection light.

FIG. 2 shows the structure (a) of the first light source unit and the direction (b) of light traveling according to an embodiment of the present invention. The first light source unit 120 according to an embodiment of the present invention is formed on the lower side of the inspection unit 110, emits the first light to emit the first light in the direction of the object insertion unit 140, the object insertion unit It is formed to transmit the inspection light transmitted in the (140) direction to the inspection unit 110.

Referring to Figure 2a, the first light source unit 120 according to an embodiment of the present invention, the first housing 210, the first light source module 220, the first polarization module 230 and the semi-transmissive module 240 ).

The first housing 210 is formed to be included therein to protect the first light source module 220, the first polarization module 230, and the transflective module 240, which will be described later. At this time, the first housing 210 is a 1-1 light emitting module formed at the bottom to emit the first light in the direction of the object insertion unit 140 or to receive the inspection light into the interior of the first housing 210 ( 250) and a first or second light emission module 260 formed on the first housing 210 to emit the inspection light in the direction of the inspection unit 110.

The first light source module 220 is provided to generate the first light and proceed to the interior of the first housing 210. At this time, the first light source module 220 may be preferably provided on one side of the first housing 210, may be formed of a surface light source, and may include a plurality of LEDs for this purpose.

The first polarization module 230 is provided to regularly arrange the traveling direction of the first light. The first polarization module 230 is preferably formed in a direction in which the first light source module 220 generates the first light so that the first light passes through the first polarization module 230. Therefore, the first light passing through the first polarization module 230 may be arranged to have straightness in a certain direction.

The transflective module 240 is provided on the other side of the first polarization module 230. The semi-transmissive module 240 passes the first polarization module 230 to change the traveling direction of the first light having a straightness in a certain direction to the 1-1 light emission module 250 direction, or to emit the 1-1 light emission The inspection light transmitted to the inside of the first light source unit 120 through the module 250 may be transmitted so that the inspection light is emitted to the inspection unit 110 through the first and second light emission modules 260.

2B illustrates a form in which the first light and the inspection light according to an embodiment of the present invention proceed inside the first light source unit 120. Referring to FIG. 2B, the first light A is generated in the first light source module 220 and passes through the first polarization module 230. The rearranged first light B formed while passing through the first polarization module 230 is reflected from the hypotenuse of the semi-transmissive module 240, and the traveling direction is changed in the direction of the 1-1 light emission module 250. It is emitted from the first light source unit 120 using the 1-1 light emission module 250.

In addition, the inspection light (C) generated by the object insertion unit 140 proceeds to the inside of the first light source unit 120 through the 1-1 light emission module 250, and transmits the semi-transmissive module 240 to remove the inspection light C. It is discharged to the inspection unit 110 through the 1-2 light emitting module 260.

Meanwhile, FIG. 3 shows (a) a structure of a second light source unit and (b) a direction of light travel according to an embodiment of the present invention, and FIG. 4 shows (a) of the second light source module according to an embodiment of the present invention. ) A stacked structure, (b) a second light source module having an inclination and (c) a second light source module without an inclination are shown.

The second light source unit 130 according to an embodiment of the present invention is formed under the first light source unit 120 and passes the first light through the object insertion unit or emits the second light to transmit the second light to the object insertion unit. It emits and is formed to pass the inspection light in the direction of the first light source. To this end, the second light source unit 130 is formed to include a second housing 310 and a second light source module 320.

The second housing 310 is formed to be included therein to protect the second light source module 320 to be described later. In this case, the second housing 310 may be formed in a cylindrical shape, for example.

Also, the second housing 310 emits the first light and the second light in the direction of the object insertion unit 140 or receives the inspection light from the object insertion unit 140 into the second housing 310. The 2-1 light emission module 311 and the first light formed on the lower portion of the housing 310 are transferred from the first light source unit 120 into the second housing 310 or the inspection light is transmitted to the first light beam. To emit in the direction of the original portion 120 may further include a 2-2 light emitting module 313 formed on the top.

The second light source module 320 generates second light so that the second light passes inside the second housing 310 and proceeds toward the object insertion unit 140 through the 2-1 light emitting module 311. It is provided. In this case, as an example, the second light source module 320 may be formed in a plurality of stacked form.

Referring to FIG. 4A, a plurality of second light source modules 320 according to an embodiment of the present invention are provided so that four second light source modules 410 to 440 are stacked. The second light source modules 410 to 440 may be divided into second inclined second light source modules 410 to 430 and second cylindrical light source modules 440 as shown in FIG. 4C. Can be.

The plurality of second light source modules 410 to 440 respectively emit the second light D as illustrated in FIG. 3B. At this time, among the plurality of second light source modules 410 to 440, the second light source module 440 in the form of a cylinder is formed as one layer at the bottom, and then accumulated at the top of the second light source module 440 on the first floor. The plurality of stacked second light source modules 410 to 430 may be formed to decrease inclination with the ground as the layer rises.

At this time, the plurality of second light source modules 410 to 440 according to an embodiment of the present invention are formed to have a space through which the first light, the second light and the inspection light can pass. That is, as shown in FIGS. 4B and 4C, the plurality of second light source modules 410 to 440 are provided with a plurality of light sources 411 to 441 on the inner wall, and through holes 413 to 443 are provided. The first light, the second light, and the inspection light may pass through the through-holes 413 to 443 to progress inside the second light source unit.

Meanwhile, the second light source module 320 according to an embodiment of the present invention may further include an additional light source under the second light source module 320. The additional light source (not shown) that is further provided emits the second light to be perpendicular to the ground, and the direction of the generated second light may be an upper direction from a lower portion of the second light source unit. In addition, the plurality of second light source modules 320 are coated or manufactured in a position where the light source does not exist in the inner wall with an easily reflective material, so that the second light emitted from the additional light source is reflected on the inner wall and emits 2-1 light. It may be formed to be transferred to the object insertion unit 140 through the module 311.

In addition, the second light source module 320 according to an embodiment of the present invention may control whether the stacked second light source modules 410 to 440 emit light according to a user's setting. In other words, by operating or stopping the second light source module of the desired layer among the second light source modules 410 to 440 of the first to fourth floors, the user can control the object inserted in the object insertion unit 140 at an angle desired by the user. 2 Can transmit light.

In addition, the second light source module 320 according to an embodiment of the present invention is a second polarization module (not shown) for arranging the traveling direction of the second light uniformly of the 2-1 light emission module 311 It may be further provided on one side. When the second polarization module is further provided, the user may keep the quality of the inspection light generated due to the second light generated from the second light source unit 130 by rearranging the direction of the second light constant.

Referring to the light propagation path of FIG. 3B, the rearranged first light B proceeds inside the second light source unit 130 through the second-second light-emitting module 313, and the second-first light-emitting module It is discharged to the object insertion unit 140 through (311).

In addition, the inspection light C generated by the object insertion unit 140 proceeds into the second light source unit 130 through the 2-1 light emission module 311, and the 2-2 light emission module 313 It is discharged to the first light source unit 120 through.

Also, the second light D generated in the plurality of second light source modules 320 may be transmitted to the object insertion unit 140 through the 2-1 light emission module 311.

Meanwhile, FIG. 5 illustrates the structure (a) and the direction in which light (b) travels in the third light source unit according to an embodiment of the present invention. The third light source unit 150 according to an embodiment of the present invention is formed under the object insertion unit 140 and is formed to emit third light toward the object insertion unit.

5A, the third light source unit 150 according to an embodiment of the present invention includes a third housing 510, a third light source module 520, and a third light emission module 530.

The third housing 510 is formed to include a third light source module 520 therein to protect the third light source module 520, and the third housing 510 is configured to emit the third light in the direction of the object insertion unit 140. A three-light emitting module 530 is formed.

The third light source module 520 is provided to generate the third light so that the third light travels inside the third housing 510. At this time, the third light source module 520 may be preferably provided below the third housing 510, may be formed as a surface light source, and may include a plurality of LEDs for this purpose.

The third light emission module 530 is formed to emit the third light generated by the third light source module 520 in the direction of the object insertion unit 140. At this time, a third polarization module (not shown) may be provided on one side of the third light emission module 530 to rearrange and rearrange the travel direction of the third light.

5B, the third light E is emitted to the outside of the third light source unit 150 through the third light emission module 530 and proceeds to the object insertion unit 140. At this time, when the third light (E) passes through the third light emitting module 530, it passes through the third polarization module (not shown), and the third light (E) travels through the third polarization module. This can be constantly rearranged.

On the other hand, Figure 6 shows the result of the light passing through the polarization module according to an embodiment of the present invention.

The polarization module 600 according to an embodiment of the present invention is provided to arrange and rearrange in a certain progress direction when light is not randomly arranged and proceeds randomly as illustrated in FIG. 6. When the light proceeds randomly, that is, when the quality of the first light to the third light is poor, the inspection light generated by the first light to the third light also shows poor quality, so the inspection accuracy is reduced. There are problems that can be done.

Therefore, in the present invention, the quality of the inspection light is increased by selectively using the first to third polarization modules, and accordingly, the inspection accuracy can also be increased.

On the other hand, Figure 7 shows the metal surface spectral reflectance according to the wavelength.

Referring to FIG. 7, in the case of gold and silver, it can be confirmed that the reflectance increases as the wavelength of the incident light increases, and aluminum increases again after the reflectance decreases in the infrared region, and in the case of consent, shows almost constant reflectance.

Therefore, in the case of the first light and the second light generating reflected light as the inspection light, it is preferable to use a red LED as a light source, and in the case of the third light whose diffraction of light must appear small to measure the interface, the blue LED is used as the light source It can be confirmed that it is preferable to use.

Although one embodiment of the present invention has been described above, the spirit of the present invention is not limited to the embodiments presented herein, and those skilled in the art to understand the spirit of the present invention can add elements within the scope of the same spirit. However, other embodiments may be easily proposed by changing, deleting, adding, or the like, but this will also be considered to be within the scope of the present invention.

100: parts defect inspection device 110: inspection unit
120: first light source unit 130: second light source unit
140: object insertion section 150: third light source section
210: first housing 220: first light source module
230: first polarization module 240: transflective module
250: 1-1 light emitting module 260: 1-2 light emitting module
310: second housing 311: 2-1 light emitting module
313: 2-2 light emitting module 320: a plurality of second light source module
410, 420, 430, 440: second light source module
411, 421, 431, 441: multiple light sources
413, 423, 433, 443: through hole
510: 3rd housing 520: 3rd light source module
530: third light emitting module 600: polarization module

Claims (10)

An object insertion unit into which parts for defect inspection are inserted;
An inspection unit for inspecting whether the component inserted into the object insertion unit is defective by using inspection light generated through interaction with the component;
A first light source unit formed on a lower side of the inspection unit, emitting the first light to emit the first light to the object insertion unit, and transmitting the inspection light transmitted in the direction of the object insertion unit to the inspection unit;
It is formed on the lower portion of the first light source portion, transmits the first light to the object insertion portion or emits a second light to emit the second light to the object insertion portion, and transmits the inspection light to the first light source portion A second light source unit; And
It is formed on the lower portion of the object insertion portion, a third light source unit for emitting a third light toward the object insertion portion; includes,
The first light and the second light are formed using a red LED, and the third light is formed using a blue LED,
The inspection light,
A first inspection light formed so that the first light and the second light are reflected from the part to inspect the surface of the part; And
The third light is partially blocked by the part, and the second inspection light is formed to inspect the interface of the part.
The first light source unit,
A first light source module formed on one side of the first light source unit to generate the first light;
A first polarization module that regularly arranges a traveling direction of the first light;
A transflective module that changes the direction of travel of the first light passing through the first polarization module in the direction of the object insertion unit; And
It includes; a first housing formed to protect the first light source module, the first polarization module, and the transflective module therein.
The first housing,
A 1-1 light emitting module formed on a lower portion of the first housing to emit the first light toward the object insertion portion or to receive the inspection light into the first housing; And
It is formed on the upper portion of the first housing to emit the inspection light in the direction of the inspection unit 1-2 light emitting module; includes,
The second light source unit,
A plurality of second light source modules formed inside the second light source unit to generate the second light; And
And a second housing formed to include the second light source module therein to protect the plurality of second light source modules.
The second housing,
A 2-1 light emitting module formed on a lower portion of the second housing to emit the first light and the second light in the direction of the object insertion unit, or to receive the inspection light into the interior of the second housing; And
It is formed on the upper portion of the second housing to receive the first light into the interior of the second housing, or a 2-2 light emitting module for emitting the inspection light in the direction of the second light source portion; includes,
The plurality of second light source modules are stacked to form a layer structure, and each layer is a component defect inspection device formed to emit the second light at different angles. delete delete delete delete delete According to claim 1,
The plurality of second light source modules form at least a four-layer structure, and the second light source module of the first layer, which is formed at the bottom, is formed in a cylindrical shape, and parts formed to decrease inclination with the ground as the number of layers increases Bad inspection device. The method of claim 7,
The second light source unit,
And a second polarization module for regularly arranging the direction in which the second light travels. The method of claim 7,
The third light source unit,
A third light source module formed inside the third light source unit to generate the third light; And
And a third housing formed to include the third light source module therein to protect the third light source module.
The third housing,
And a third light emitting module formed on an upper portion of the third housing to emit the third light toward the object insertion unit. The method of claim 9,
The third housing,
And a third polarization module formed on one side of the third light emission module to uniformly determine the direction of the third light.

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