WO2018146659A1 - Inspection device - Google Patents

Abstract

The technical concept of the present invention provides an inspection device capable of precisely inspecting the exterior of an inspection object while reducing the time and cost spent for the inspection. The inspection device comprises: a conveyor part allowing a front surface or a rear surface of an inspection object to be inspected; and a flipper part which rotates the inspection object so as to have side surfaces thereof inspected, and to which a mirror part for inspecting a corner part of the inspection object is installed. Accordingly, the inspection device can precisely and rapidly inspect the exterior of the inspection object, and easily inspect, without the addition of a light source, the corner part of the inspection object which is difficult for the view angle of an inspection part to reach.

Description

Inspection device

The technical idea of the present invention relates to an inspection apparatus, and more particularly, to an inspection apparatus for inspecting the appearance of a product.

In general, various patterns or symbols are formed on a case of various electronic products such as a mobile phone, a digital camera, and a phone by imprinting or printing, and the material is also made of various materials such as plastic, metal, and ceramic. Defects, such as scratches or stamps, may occur on the surface of the case during production and transportation, and the reliability of the product may decrease when the case in which the defect is generated is used for manufacturing an electronic device. Therefore, the case requires an appearance inspection process for inspecting whether a surface defect is generated, and in general, the appearance inspection may be performed through the naked eye. However, the visual inspection by the naked eye is inferior in workability, and may also cause a problem of not finding a defect by mistake.

Meanwhile, a plurality of cameras installed on the outer side of the conveyor belt photograph the case at various angles while acquiring the case on the conveyor belt and transporting the case in one direction, thereby acquiring an image of each side of the case and analyzing the image, thereby generating a defect in the case. You can check whether it is. However, such a conveyor belt and an inspection apparatus using a camera are disadvantageous in terms of cost including a large number of cameras, and when the case does not rest on the conveyor belt, it is difficult to obtain accurate images, and therefore, even in the presence of defects. An error may occur.

The problem to be solved by the technical idea of the present invention is to provide an inspection apparatus that can reduce the time and cost spent in the inspection while precisely inspecting the appearance of the inspection object.

Another object of the present invention is to provide an inspection apparatus capable of accurately and quickly inspecting the front, rear, side, and edge portions of an inspection object.

In order to solve the above problems, the technical idea of the present invention includes a pair of rail bodies installed so that the conveyor belt is capable of traveling, and while the conveyor belt is driven, the front or rear surface of the inspection object is supported upward to support the inspection. A pair of flipper bodies each having a conveyor body for conveying an object, a rotating body rotatably coupled to the support body by a support body and a flipper shaft, and installed to be rotatable on the rotating body for transporting the inspection object A flipper belt and a mirror portion provided on the rotatable body for inspecting a first edge portion between two neighboring side surfaces of the inspection object, the inspection object having a side of the inspection object facing upward; A flipper unit for rotating the light source, and a light source for emitting light, Group mirror unit provides an inspection apparatus for reflecting part of the first edge of the light emitted from the light source when the one side surface of the inspection object to head upward.

In some embodiments, at least one inspection unit for receiving the light reflected from the inspection object to inspect the inspection object, the inspection unit is a front or rear inspection of the inspection object located on the conveyor unit, and moving; Inspecting the side and the first corner of the inspection object located in the flipper portion.

In some embodiments, the inspection unit inspects the inspection object using pattern illumination.

In some embodiments, when the side of the inspection object is directed upward, the inspection unit inspects one side and the first corner portion of the inspection object facing the inspection unit while moving in one direction.

In some embodiments, the mirror unit may reflect light reflected from the first corner portion facing the inspection unit toward the inspection unit when one side of the inspection object faces upward.

In some embodiments, the flipper part includes a flipper clamp for fixing the test object, wherein the flipper clamp fixes the test object such that one side of the test object protrudes from one end of the rotating body. do.

In some embodiments, the mirror unit may include a mirror having a reflective surface and a mirror rotating member configured to rotate the mirror to adjust an angle of light emitted from the light source and incident to the mirror to the reflective surface. It features.

In some embodiments, the flipper part is clockwise and counterclockwise in a position in which the side of the test object faces upward, such that a second corner portion between the side and front of the test object and between the side and the back of the test object is inspected. The inspection object is rotated within a predetermined angle in a direction.

In some embodiments, the conveyor unit is disposed in the conveying path of the conveyor unit, the rotating part for rotating the inspection object in parallel with the front or rear surface of the inspection object in a posture of the front or rear surface of the inspection object upward. And a clamp disposed on the conveying path of the conveyor unit and fixing the inspection target while the front or rear surface of the inspection target is inspected.

In addition, in order to solve the above problems, the technical idea of the present invention includes a pair of rail bodies installed so that the conveyor belt is capable of traveling, and a predetermined setting for inspecting the first surface of the inspection target by driving the conveyor belt. A pair of flipper bodies each having a conveyor for transporting the inspection object to a position, and a rotating body rotatably coupled to the supporting body by a supporting body and a flipper shaft, a flipper belt installed to run on the rotating body And a mirror portion provided in the rotating body for inspecting edge portions between two neighboring surfaces of the inspection object, wherein a second surface of the inspection object different from the first surface of the inspection object is upward. And a flipper for rotating the inspection object to face the light source, and a light source for emitting light. The inspection apparatus may include an inspection apparatus that reflects light emitted from the light source so that an edge portion between the second surface and the surfaces of the inspection object adjacent to the second surface is illuminated when the second surface of the inspection object faces upward. to provide.

The inspection apparatus according to the technical spirit of the present invention includes a conveyor unit capable of inspecting the front or rear surface of the inspection object and a flipper unit capable of rotating the inspection object to inspect the side surfaces of the inspection object, between the conveyor unit and the flipper unit. By inspecting the reciprocating movement of the inspection object, the appearance of the inspection object of the cuboid structure can be inspected precisely and quickly. Furthermore, since the inspection apparatus includes a mirror disposed on the flipper portion, it is possible to easily inspect the edge portion of the inspection object that is hard to reach the angle of view of the inspection portion without the addition of a light source by using the mirror.

1 is a perspective view schematically showing an inspection apparatus according to an embodiment of the inventive concept.

FIG. 2 is a plan view schematically illustrating the inspection apparatus illustrated in FIG. 1.

3 is a perspective view illustrating a flipper unit according to an exemplary embodiment of the inventive concept.

4A and 4B show the inner and outer surfaces of the rotating body shown in FIG. 3, respectively.

5 is a view for explaining a method of inspecting the side and the first corner portion of the inspection object in the inspection device according to an embodiment of the present invention.

6 is a diagram conceptually illustrating a method of inspecting a first corner portion of an inspection object in an inspection apparatus according to an exemplary embodiment of the present disclosure.

7 is a view conceptually illustrating a method of inspecting a first corner portion of an inspection object in an inspection apparatus according to an exemplary embodiment of the inventive concept.

8A and 8B are views conceptually illustrating a method of inspecting a first corner portion of an inspection object in an inspection apparatus according to an exemplary embodiment of the inventive concept.

9A to 9E are diagrams for describing an exemplary method of operating a flipper unit.

10 is a diagram for describing an exemplary method of operating a flipper unit.

The inspection apparatus according to the present invention includes a pair of rail bodies installed so that the conveyor belt is capable of traveling, and the conveyor unit transports the inspection object while supporting the front or rear side of the inspection object by moving the conveyor belt upward. A pair of flipper bodies each having a rotatable body rotatably coupled to the support body by a support body and a flipper shaft, a flipper belt installed to run on the rotatable body for transporting the inspection object, and the inspection A flipper provided in the rotating body for inspecting a first edge portion between two neighboring side surfaces of the object, the flipper rotating the object to face upward of the object; Unit, and a light source for emitting light, wherein the mirror unit is the inspection object The light emitted from the light source is reflected to the first corner part when one side of the upper surface is upward.

Hereinafter, exemplary embodiments of the inventive concept will be described in detail with reference to the accompanying drawings. However, embodiments of the inventive concept may be modified in many different forms, and the scope of the inventive concept should not be construed as limited by the embodiments set forth below. Embodiments of the inventive concept are preferably interpreted to be provided to more completely explain the inventive concept to those skilled in the art. Like numbers refer to like elements all the time. Furthermore, various elements and regions in the drawings are schematically drawn. Accordingly, the inventive concept is not limited by the relative size or spacing drawn in the accompanying drawings.

Terms such as first and second may be used to describe various components, but the components are not limited by the terms. The terms are used only to distinguish one component from another. For example, without departing from the scope of the inventive concept, the first component may be referred to as the second component, and conversely, the second component may be referred to as the first component.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the inventive concepts. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the expression “comprises” or “having” is intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and that one or more other features It should be understood that it does not exclude in advance the possibility of the presence or addition of numbers, operations, components, parts or combinations thereof.

Unless defined otherwise, all terms used herein have the same meaning as commonly understood by one of ordinary skill in the art, including technical terms and scientific terms. Also, as used in the prior art, terms as defined in advance should be construed to have a meaning consistent with what they mean in the context of the technology concerned, and in an overly formal sense unless explicitly defined herein. It will be understood that it should not be interpreted.

1 is a perspective view schematically illustrating an inspection apparatus 1000 according to an exemplary embodiment of the inventive concept. 2 is a plan view schematically illustrating the inspection apparatus 1000 illustrated in FIG. 1.

1 and 2, the inspection apparatus 1000 includes an inspection unit 400 disposed above the first conveyor unit 100, the flipper unit 200, the second conveyor unit 300, and the above-listed components. ) May be included.

On the other hand, the inspection target to be inspected by the inspection apparatus 1000 may be a product requiring an appearance inspection. For example, the inspection object may be a metal product whose appearance is made of metal. In addition, the inspection object may have a rectangular parallelepiped shape. For example, the inspection object may have front and back sides and sides opposite to each other, and may have a curved edge portion. Hereinafter, the corner portion between two adjacent sides is the first corner portion, and the corner portion between the front surface F and the side surface and the back surface and the side surface is called a second corner portion.

The sides may include two long sides opposite to each other and two short sides opposite to each other, where the long side means a side adjacent to the front side F or the long side of the back side, and the short side is the front side ( F) Or it may mean a side adjacent to the short side of the back. The inspection apparatus 1000 may be an inspection apparatus that inspects all of the front surface F, the rear surface, the side surfaces, and the corners of the inspection object. Of course, the material of the inspection object is not limited to the metal, or the structure of the inspection object is not limited to the rectangular parallelepiped.

The first conveyor unit 100 may be disposed at the inlet side where the inspection target is loaded. The first conveyor unit 100 may be a portion for performing an inspection on the front surface F or the rear surface of the inspection object in the inspection apparatus 1000. The first conveyor unit 100 may transfer while supporting the inspection object such that the front surface F or the rear surface of the inspection object faces upward where the inspection unit 400 is disposed.

The first conveyor unit 100 may include a pair of first rail bodies 110, a rotating unit 120, and a clamp 130.

The pair of first rail bodies 110 may be disposed to face each other and extend in parallel. Each of the pair of first rail bodies 110 may be provided with a first conveyor belt 115. The first conveyor belt 115 may be installed to run on the first rail body 110. The first conveyor unit 100 may transfer the inspection object while supporting the inspection object such that the front surface F or the rear surface of the inspection object faces upward through the first conveyor belt 115. The first conveyor unit 100 may move the inspection object forward or backward by forward or reverse rotation of the transfer motor for driving the first conveyor belt 115. For example, the first conveyor unit 100 moves the inspection object loaded by driving the first conveyor belt 115 to the front / back inspection positions provided in the first conveyor unit 100, or in the flipper unit 200. After the side inspection is performed, the inspection object transferred to the first conveyor unit 100 may be transferred to the rotating unit 120.

The distance between the pair of first rail bodies 110 may be adjusted according to the arrangement state of the inspection object placed on the first conveyor belt 115. For example, the distance between the pair of first rail bodies 110 when the long side of the inspection object faces forward is the distance between the pair of first rail bodies 110 when the short side of the inspection object faces forward. Can be greater than

In some embodiments, at least one of the pair of first rail bodies 110 includes a guide rail 116 in which the pair of first rail bodies 110 extend in a direction away from each other (eg, in the Y direction). ) Can be installed to be movable. Between the pair of first rail bodies 110, a first ball screw 114 for moving at least one of the pair of first rail bodies 110 may be installed. That is, at least one of the pair of first rail bodies 110 may be moved in the longitudinal direction of the first ball screw 114 by the rotation of the first ball screw 114.

The rotating unit 120 may be disposed in the transfer path of the first conveyor unit 100 and may rotate the inspection object horizontally. That is, the rotating part 120 may rotate the test object in parallel with the front surface F or the back surface of the test object in a posture in which the front surface F or the rear surface of the test object faces upward. For example, the rotating unit 120 rotates about 90 ° horizontally of the inspection object disposed in the longitudinal direction between the pair of first rail body 110, so that the inspection object is between the pair of first rail body 110. It may be arranged in the width direction. On the contrary, the rotation unit 120 may rotate the inspection object in the width direction in the length direction. Here, the horizontal means a surface parallel to the front surface (F) or the rear surface of the inspection object, hereinafter the state in which the front surface (F) or the rear surface of the inspection object is directed upward is referred to as a 'horizontal state'. In addition, the longitudinal direction is a direction in which the long side surfaces of the inspection object are parallel to the pair of first rail bodies 110, and in the width direction, the short side surfaces of the inspection object are directions parallel to the pair of first rail bodies 110. Can be.

The rotating unit 120 may include a gripping finger 122, and may rotate a gripping finger 122 horizontally and move the gripping finger 122 in an up and down direction. And lifting drive cylinders (not shown).

The holding finger 122 may be provided to hold the inspection object. The gripping finger 122 may include four unit fingers, and the four unit fingers may stably hold the test object by supporting opposite sides of the test object. Meanwhile, in order to prevent the holding finger 122 from colliding with the first rail body 110 when the distance between the pair of first rail bodies 110 is narrowed, the first rail body 110 may be used for holding. A groove G into which the finger 122 can be inserted may be formed.

The rotating unit 120 may rotate the inspection object horizontally through a process of raising, rotating, and lowering the inspection object. In other words, the inspection object disposed on the pair of first rail bodies 110 is separated from the pair of first rail bodies 110 by the rotating part 120 and ascends, descends after being rotated about 90 °. It may be disposed in the first rail body 110 of the pair. On the other hand, the rotation of the inspection object through the rotating unit 120 may be performed simultaneously with the ascending or descending process. In addition, about 90 ° rotation of the inspection object through the rotating unit 120 may be made through one rotation or may be made through several rotations.

The rotating part 120 may be installed on the second ball screw 124 extending between the pair of first rail bodies 110. By the rotation of the second ball screw 124, the holding finger 122 may be moved along the length direction of the second ball screw 124.

In some embodiments, when the distance between the pair of first rail bodies 110 is changed by the rotation of the first ball screw 114, the second ball screw 124 may cause the finger 122 to hold the grip 122. It may be rotated to be located at the center of the pair of first rail body (110).

More specifically, the first ball screw 114 and the second ball screw 124 may be rotated in conjunction with the drive shaft 117 rotated by the drive motor. For example, the driven pulley 118 coupled to the first ball screw 114 is connected to the drive shaft 117 by a power transmission member such as a belt, and the driven pulley 128 coupled to the second ball screw 124. Is connected to the drive shaft 117 by a power transmission member. At this time, the lead of the first ball screw 114 and the lead of the second ball screw 124 are appropriately adjusted so that the holding finger 122 moves in association with the pair of first rail bodies 110. At the same time it may be located in the center of the pair of first rail body (110).

So far, the structure and operation of the rotating unit 120 have been briefly described, but this is merely exemplary and the structure or operation of the rotating unit 120 is not limited thereto. For example, the structure and operation of all of the rotating parts 120 capable of rotating the inspection object by about 90 ° may be applied to the inspection apparatus 1000 of the present embodiment.

The clamp 130 is disposed in the transfer path of the first conveyor unit 100, and the front side F or the rear side of the inspection target is inspected by the inspection unit 400 at the front / back side inspection positions provided in the first conveyor unit 100. The test object can be fixed during the process. For example, when the inspection object is moved to the front / back inspection position along the first conveyor belt 115, the clamp 130 compresses the side of the inspection object to firmly fix the inspection object, thereby inspecting the inspection unit 400. Ensure stable and precise performance.

Meanwhile, a plurality of sensors may be installed in the transfer path of the first conveyor unit 100 to detect the position of the inspection target. For example, the sensor may include a light emitting unit and a light receiving unit, and may be installed on the pair of first rail bodies 110, respectively. For example, the sensor may detect that the test object is positioned at a predetermined position for holding the test object using the rotating unit 120 or detect that the test object is located at the front / back test positions.

The flipper unit 200 may be disposed in parallel with the first conveyor unit 100 in a transport direction (for example, X direction) of the first conveyor unit 100. The flipper 200 may be a portion for performing inspection on the sides of the inspection target in the inspection apparatus 1000.

The flipper 200 may rotate the inspection object such that a side of the inspection object faces upward. Here, the rotation may mean a rotation using an imaginary straight line connecting the centers of two rotating bodies 230 to be described later as the rotation axis. Hereinafter, a state in which the side of the inspection object faces upward is referred to as a "vertical state".

More specifically, when the inspection object is in a horizontal state in which the front surface (F) or the rear surface is upward, the flipper part 200 rotates the inspection object vertically by about 90 ° to the vertical state in which one side of the inspection object is upward. Can be In addition, the flipper 200 may rotate the inspection object by about 180 ° when the inspection object is in a vertical state, so that the flipper 200 may be in a vertical state again, but change the positions of the lower side and the upper side. The configuration and operation method of the flipper 200 will be described in more detail later.

The second conveyor unit 300 may be disposed at an outlet side at which an inspection object is unloaded. The second conveyor unit 300 may be disposed in parallel with the flipper unit 200, and may receive the inspected object from which the inspection is completed from the flipper unit 200 and transfer it to the outlet. The second conveyor unit 300 may include a pair of second rail bodies 310 and a second conveyor belt 315 installed to run on the second rail body 310 so as to face each other and extend side by side. Can be. The second conveyor unit 300 may transfer the inspection object while supporting the inspection object such that the front surface F or the rear surface of the inspection object faces upward through the second conveyor belt 315.

 The inspection unit 400 may capture an image of the appearance of the inspection object. For example, a light source (500 of FIG. 7) illuminating the inspection object emits light toward the inspection object, and the inspection unit 400 may receive the light reflected from the inspection object to capture the inspection object. The inspection unit 400 may be, for example, a CCD camera. Of course, the inspection unit 400 is not limited to the CCD camera. For example, the inspection unit 400 may be a high performance CMOS camera such as a sCMOS (Scientific CMOS) camera. In addition, the inspection unit 400 may include all kinds of sensors or detectors capable of detecting the defect of the inspection object by receiving light reflected from the inspection object.

For example, the inspection unit 400 may include devices for measuring the three-dimensional shape of the inspection object by irradiating the inspection object with the pattern illumination by changing the phase and receiving light reflected from the inspection object. Since the principle of measuring a three-dimensional shape using pattern illumination is already known, a detailed description thereof will be omitted.

The inspection unit 400 may be disposed above the first conveyor unit 100 and the flipper unit 200, and may inspect the inspection object while circulating predetermined positions. For example, the inspection unit 400 inspects the front surface F and the rear surface of the inspection object at the first inspection position provided above the first conveyor unit 100, and inspects the inspection object at the second inspection position provided above the flipper 200. The sides of the can be inspected. The inspection unit 400 may be installed in a gantry and move in the X direction and / or the Y direction, and further, may move in the Z direction.

On the other hand, in the inspection apparatus 1000 of the present embodiment, the inspection unit 400 is not limited to the camera, it may include an analysis device that can analyze the image obtained through the camera with the camera. The analysis device is an analysis computer on which an analysis program is installed, and may be, for example, a general personal computer, a workstation, a supercomputer, or the like.

3 is a perspective view illustrating a flipper unit 200 according to an embodiment of the inventive concept. 4A and 4B show the inner and outer surfaces of the rotary body 230 shown in FIG. 3, respectively.

3, 4A, and 4B, the flipper unit 200 includes a pair of flipper body 210, a flipper belt 240 installed to run on the flipper body 210, and a flipper body 210. It may include a mirror unit 280, the flipper clamp 260 and the flipper lifter 250 installed in the. The pair of flipper bodies 210 may be disposed to face each other on the base plate 201. The pair of flipper bodies 210 may include a support body 220 and a rotating body 230, respectively.

The distance between the pair of flipper bodies 210 may be adjusted. For example, at least one of the two support bodies 220 provided in the pair of flipper bodies 210 may be moved along the guide rail 203 provided on the base plate 201 through the moving block 222. have. That is, at least one of the two support bodies 220 is moved along the guide rail 203 extending between the pair of flipper bodies 210, so that the distance between the pair of flipper bodies 210 can be adjusted. have.

The rotating body 230 may be installed to be rotatable to the support body 220 by the flipper shaft 232. The rotating body 230 is disposed in the inward direction of the support body 220, and may be disposed adjacent to the first rail body 110 and the second rail body 310 when in the horizontal state.

The pair of rotating bodies 230 may be rotated in synchronization with each other by a ball spline 234 installed extending between the pair of flipper bodies 210.

More specifically, the flipper drive pulley 236 provided on the flipper drive motor 235 is connected to the driven pulley 238 coupled to the ball spline 234 through a power transmission member, and a pair of rotating bodies ( The flipper shafts 232 coupled to each of the 230 may be connected to sub pulleys (not shown) coupled to the ball spline 234 through the power transmission member. By such a configuration, the two rotary bodies 230 may be synchronized and rotated by the rotational movement of the ball spline 234. By forward or reverse rotation of the flipper drive motor 235, the two rotating bodies 230 can be rotated clockwise or counterclockwise.

The flipper belt 240 may be installed on the pair of rotating bodies 230, respectively, and may extend along the longitudinal direction of the rotating body 230. While the rotating body 230 is positioned in a horizontal state, the flipper belt 240 may be disposed adjacent to the first conveyor belt 115 and the second conveyor belt 315. The flipper unit 200 may travel the flipper belt 240 to transfer the inspection object in a direction parallel to the transfer direction of the first conveyor unit 100. That is, by the running of the flipper belt 240, the inspection object can be moved forward or backward with the front or rear face upward.

The flipper belt 240 may include an upper belt 242 and a lower belt 244 disposed on the inner surface of the rotating body 230 spaced up and down. The upper belt 242 and the lower belt 244 may be supported by the drive pulleys 246 and 248 and two or more support rollers 249, respectively, and may be driven by the rotation of the drive pulleys 246 and 248, respectively. Can be.

More specifically, to drive the upper belt 242 and the lower belt 244, the drive gear 272 rotatably installed on the support body 220, and on the outer surface of the rotary body 230 The first idle gear 274 and the second idle gear 276 may be provided to be rotatable. The first idle gear 274 may be connected to the driving pulley 246 supporting the upper belt 242 through a rotation shaft, and the second idle gear 276 may drive the pulley 248 supporting the lower belt 244. And can be connected via a rotating shaft.

In order to transfer the object to be inspected, the driving gear 272 may rotate in engagement with one of the first idle gear 274 and the second idle gear 276. For example, when the second idle gear 276 connected to the lower belt 244 meshes with the drive gear 272, the second idle gear 276 rotates according to the rotation of the drive gear 272, and as a result, the lower belt ( 244 may travel. On the other hand, when the rotation body 230 is rotated about 180 ° so that the first idle gear 274 connected to the upper belt 242 is engaged with the drive gear 272, the first idle according to the rotation of the drive gear 272. Gear 274 rotates, and as a result, top belt 242 can travel. That is, the upper belt 242 and the lower belt 244 may be driven independently to transport the inspection object.

The flipper clamp 260 may fix the inspection object and may be installed on the rotating body 230. When the test object is moved to the proper position by the flipper belt 240, the clamp plate 262 may be in close contact with the test object to fix the test object. Here, the proper position may mean a position in which the side to be inspected of the inspection object is coincided with both ends of the rotating body 230, or a position protruded slightly from both ends. The sensor may be provided to determine whether the test object is located at an appropriate position. For example, the sensor may be disposed at portions adjacent to both ends of the rotating body 230.

The flipper clamp 260 may include a clamp plate 262 and a clamp drive cylinder 264. The clamp plate 262 may extend along the longitudinal direction of the rotating body 230, and may be disposed to face one side of the inspection object that is moved along the flipper belt 240. The clamp driving cylinder 264 may press the clamp plate 262 so that the clamp plate 262 is in close contact with the test object to fix the test object. The clamp driving cylinder 264 is disposed to be spaced apart from the flipper shaft 232, and may be provided, for example, on the left and right sides with respect to the flipper shaft 232. The flipper clamp 260 may be provided only in any one of the pair of rotation bodies 230, but is not limited thereto and may be provided in all of the pair of rotation bodies 230.

The flipper elevator 250 may raise and lower the flipper body 210 in the vertical direction so that one side of the inspection object in the vertical state may be positioned at a height suitable for being inspected by the inspection unit 400. For example, the flipper elevator 250 may include an elevating ball screw 252 and an elevating drive motor 254 for rotating the elevating ball screw 252. For example, the lifting ball screw 252 may extend in the vertical direction and be installed on the base plate 201, and may be rotated by driving of the lifting driving motor 254 to raise or lower the flipper body 210. . The support body 220 may be provided with an LM guide (linear motion guide) 224 for guiding the flipper body 210 in the vertical direction. The LM guide 224 is slidably coupled to a guide rail (not shown) installed upright in a vertical direction. Accordingly, the lifting operation of the flipper body 210 may be stably performed.

The mirror unit 280 may be provided to inspect the first corner portion of the inspection object. The mirror unit 280 may be installed on the rotating body 230, and for example, may be disposed on the side of the rotating body 230. Mirror portion 280 may include a mirror (282 of FIG. 5) having a reflective surface, the mirror 282 may be mounted to the rotating body 230 by a support structure.

While the side surface of the inspection object vertically erected by the flipper portion by the inspection unit 400 is inspected, the mirror unit 280 allows the first corner portion of the inspection object to be captured by the inspection unit 400. For example, the inspection unit 400 may image the first corner portion of the inspection object reflected by the mirror unit 280. Alternatively, the mirror unit 280 reflects the light emitted from the light source (500 in FIG. 7) to illuminate the first corner of the inspection object, so that the amount of light sufficient for the inspection unit 400 to capture the first corner of the inspection object. Can be secured. That is, the mirror unit 280 may remove blind spots so that the first edge of the inspection object may be inspected together while the side of the inspection object is inspected by the inspection unit 400.

5 is a view for explaining a method of inspecting the side and the first corner portion E1 of the inspection target in the inspection device according to an embodiment of the present invention. 6 is a diagram conceptually illustrating a method of inspecting a first corner portion E1 of an inspection object in an inspection apparatus according to an exemplary embodiment of the present invention.

Referring to FIG. 5, in order to inspect the side of the inspection object, the inspection object is rotated by the rotating body 230 so that one side thereof faces upward, and thus the one side of the inspection object is inspected by the inspection unit 400. Face to face. At this time, the one side facing the inspection unit 400 may protrude from the end of the rotating body 230.

As illustrated in the drawing, the inspection unit 400 may inspect the one side of the inspection object while moving in one direction a1. For example, the inspection unit 400 may capture a plurality of images of the one side while moving in one direction a1.

5 and 6, the inspection unit 400 is reflected from the mirror 282 to inspect the first corner portion E1 of one side of the inspection object in a vertical state facing the inspection unit 400. The light L2 can be received. For example, the light L1 reflected from the first edge portion E1 is reflected back at the mirror 282, and the inspection unit 400 may receive the light L2 reflected at the mirror 282. The first corner E1 may be captured by moving to.

That is, the mirror 282 reflects the light reflected from the first edge portion E1 to the inspection portion 400 so that the first edge portion E1 is picked up by the inspection portion 400, so that an angle of view of the inspection portion 400 is increased. It can eliminate the blind area that does not reach. In addition, when the mirror 282 is used, the first edge portion E1 may be inspected without the addition of a camera for inspecting the first edge portion E1, thereby reducing the cost.

FIG. 7 is a diagram conceptually illustrating a method of inspecting a first corner portion E1 of an inspection object in an inspection apparatus according to an embodiment of the inventive concept.

Referring to FIG. 7, the mirror 282 reflects the light L3 emitted from the light source 500 and enters the first corner portion E1, thereby using the inspection unit 400 to make the first corner portion E1. It is possible to ensure that the amount of light sufficient to inspect the.

In other words, the mirror 282 may reflect the light L3 emitted from the light source 500 to illuminate the first edge portion E1 of the inspection object, and the light source directly illuminating the first edge portion E1. Even if it is not added, the amount of light sufficient to inspect the first corner portion E1 can be ensured.

On the other hand, in some embodiments, the mirror 282 may have a variety of shapes or structures to disperse the light reflected by the mirror 282 in a wider range, for example, the reflective surface of the mirror 282 It may have a convex shape.

8A and 8B are views conceptually illustrating a method of inspecting a first corner portion E1 of an inspection object in an inspection apparatus according to an embodiment of the inventive concept.

8A and 8B, the mirror unit 280 may include a mirror 282 and a mirror rotating member 284 for rotating the mirror 282. The mirror rotating member 284 may include, for example, a rotating motor, but is not limited thereto.

As shown in FIG. 8A, in some embodiments, the mirror rotating member 284 may change the path through which the light L1 ′ reflected at the first edge portion E1 is reflected from the mirror 282 to change. The mirror 282 can be rotated. That is, the mirror rotating member 284 may rotate the mirror 282 to adjust an angle at which the light L1 ′ reflected from the first edge portion E1 forms the reflective surface of the mirror 282.

For example, the mirror rotating member 284 may advance the light L1 ′ reflected by the first edge portion E1 toward the inspection unit 400 positioned at a predetermined inspection position by rotating the mirror 282. .

For example, in FIG. 6, the light L1 reflected from the first edge portion E1 of the inspection object is compared with the incident angle of the mirror 282 at the first angle (θ1 in FIG. 6) with respect to the reflective surface of the mirror 282. The light L1 ′ reflected by the first corner portion E1 may be incident on the mirror 282 at an angle θ1 ′ smaller than the first angle by rotating the 282 clockwise by a predetermined angle. As a result, the inspection unit 400 may inspect the first corner portion E1 in a direction away from one side of the inspection object facing the inspection unit 400.

As shown in FIG. 8B, in some embodiments, the mirror rotating member 284 rotates the mirror 282 such that the light L3 ′ emitted from the light source 500 is reflected with the reflective surface of the mirror 282. You can adjust the angle to make.

For example, the mirror rotating member 284 may easily illuminate a specific area of the first edge portion E1 by rotating the mirror 282.

For example, the mirror 282 is clockwise compared to the incident light L3 ′ emitted from the light source 500 in FIG. 7 at a second angle (θ2 in FIG. 7) with respect to the reflective surface of the mirror 282. The light L3 ′ emitted from the light source 500 may be incident on the mirror 282 at an angle θ2 ′ smaller than the second angle by rotating the predetermined angle. As a result, the inspection unit 400 may illuminate the first corner portion E1 in a direction away from one side of the inspection object facing the inspection unit 400.

9A to 9E are diagrams for describing an exemplary method of operating a flipper unit. Hereinafter, an exemplary operation method of the flipper unit and a method of inspecting the side and first corner portions E1_1 and E1_2 of the object to be inspected using the same will be described with reference to FIGS. 3A to 9E.

First, referring to FIG. 9A, when the inspection object for which the inspection of the front surface F is completed is transferred from the first conveyor unit 100 to the flipper unit 200, the flipper unit 200 may drive the flipper belt 240. Transfer the test object to the proper position. In this case, the inspection object may be conveyed in a state in which the front surface F faces upward, and the first long side surface S1, which is one of the long side surfaces of the inspection object, faces forward. Here, the proper position may correspond to a position where the side portion to be inspected, for example, the first long side surface S1 of the inspection object, slightly protrudes from one end of the rotating body 230. Thereafter, at the proper position, the inspection object may be firmly fixed by the clamp plate 262.

Next, referring to FIG. 9B, the flipper 200 may rotate the rotating body 230 by about 90 ° in a counterclockwise direction so that the inspection object is vertical, and lower the inspection object by a predetermined distance. The lowering of the inspection object is to separate the first long side surface S1 of the inspection object from the inspection unit 400 at an appropriate distance to be inspected by the inspection unit 400. In this case, the lowering of the rotating body 230 may be made before rotating the rotating body 230, while rotating the rotating body 230, or after rotating the rotating body 230. That is, when the first long side surface S1 faces upward by the lowering and rotating operation of the flipper 200, the inspection unit 400 may have both sides of the first long side surface S1 and the first long side surface S1. The inspection of the first edge portion E1_1 of FIG.

Meanwhile, as illustrated in the drawing, the inspection unit 400 may inspect the appearance of the inspection object while moving in one direction a1. For example, the inspection unit 400 may capture a plurality of images of the first long side surface S1 and the first corner portion E1_1 on both sides of the first long side surface S1 while moving in one direction a1. .

Meanwhile, the mirror unit 280 reflects the light reflected from the first corner portion E1_1 back to the inspection unit 400 or illuminates the first corner portion E1_1 by reflecting the light emitted from the light source. The first corner portion E1_1 is inspected by the inspection unit 400.

Next, referring to FIG. 9C, the flipper 200 may rotate the rotating body 230 by about 90 ° clockwise so that the inspection object is in a horizontal state, and raise the inspection object by a predetermined distance. Thereafter, the flipper unit 200 drives the flipper belt 240 to move the inspection object toward the opposite end of the rotating body 230. As a result, the second long side surface S2 of the inspection object opposite to the first long side surface S1 faces backward, and the second long side surface S2 of the inspection object is slightly at the opposite end of the rotating body 230. It may be positioned to protrude. Thereafter, the test object is firmly fixed by the clamp plate 262.

Next, referring to FIG. 9D, the flipper 200 rotates the rotational body 230 about 90 ° clockwise so that the inspection object is vertical, and the inspection unit 400 rotates the second long side surface S2. The test object can be lowered to a position suitable for the test. On the other hand, the rotating body 230 may be rotated about 270 ° counterclockwise to be in a vertical state. When the second long side surface S2 faces upward by the lowering and rotating operation of the flipper unit 200, the inspection unit 400 may include the first long sides S2 and the first long side surfaces S2. The inspection on the edge portion E1_2 is performed.

Meanwhile, as illustrated in the drawing, the inspection unit 400 may inspect the appearance of the inspection object while moving in one direction a1. For example, the inspection unit 400 may capture a plurality of images of the second long side surface S2 and the first corner portion E1_2 while moving in one direction a1.

On the other hand, the mirror 280 by reflecting the light reflected back from the first edge portion (E1_2) back to the inspection unit 400 or by reflecting the light emitted from the light source to illuminate the first edge portion (E1_2) The first corner portion E1_2 is inspected by the inspection unit 400.

Next, referring to FIG. 9E, the flipper 200 may rotate the rotating body 230 in a clockwise direction by about 90 ° such that the inspection object is in a horizontal state, and raise the inspection object by a predetermined distance. By the rotation of the rotary body 230, the inspection object is the back side (B) facing upwards and the second long side surface (S2) is facing forward. Thereafter, the flipper unit 200 may transfer the inspection object to the first conveyor unit 100 (FIG. 1) in order to inspect the rear surface B of the inspection object. On the other hand, if the inspection of the back side (B) and the short side of the inspection object is already completed, the flipper 200 may transfer the inspection object to the second conveyor unit (300 of FIG. 1).

10 is a diagram for describing an exemplary method of operating a flipper unit. Hereinafter, an exemplary operation method of the flipper unit for inspecting the second corner portion E2 of the inspection object will be described.

3 and 10, the flipper 200 rotates the inspection object such that one side of the inspection object is in a vertical state facing upward, and then rotates the inspection object in a clockwise direction and in a posture in which one side of the inspection object faces upward. The inspection object can be rotated within a predetermined angle θ in the counterclockwise direction. As a result, the second corner portion E2 of the inspection object faces the inspection unit 400, and the inspection unit 400 inspects the second corner portion E2 which is not imaged when the inspection object is in a vertical state. Can be. For example, as shown in FIG. 6, when the first long side surface S1 of the inspection object faces upward, the inspection object is rotated by the rotation body 230 in a clockwise and counterclockwise direction with a predetermined angle θ. Is further rotated, whereby the inspection part 400 may include a second corner portion E2 between the first long side surface S1 and the front surface, and a second corner portion between the first long side surface S1 and the rear surface B ( E2) can be checked.

As a result, the inspection unit 400 inspects the long side surfaces and the short side surfaces, respectively, and then rotates the inspection object in the vertical state by the flipper 200 in a clockwise and counterclockwise direction by a predetermined angle θ. The second corner portion E2 of can be inspected. On the other hand, the angle rotated in the clockwise and counterclockwise direction in the vertical state of the inspection object may be the same. In some cases, however, the angles rotated clockwise and counterclockwise in the vertical state of the inspection object may be different.

As described above, exemplary embodiments have been disclosed in the drawings and the specification. Although embodiments have been described using specific terms in this specification, they are used only for the purpose of describing the technical spirit of the present disclosure and are not used to limit the scope of the present disclosure as defined in the meaning or claims. . Therefore, those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present disclosure will be defined by the technical spirit of the appended claims.

Claims (10)

Conveyor belt has a pair of rail body is installed to run, the conveyor belt for transporting the inspection object while supporting the inspection object so that the front or rear of the inspection object to run upward by traveling the conveyor belt; A pair of flipper bodies each having a rotatable body rotatably coupled to the support body by a support body and a flipper shaft, a flipper belt installed to run on the rotatable body for transporting the inspection object, and the inspection object A flipper provided in the rotating body for inspecting a first edge portion between two neighboring side surfaces of the flipper, and a flipper for rotating the test object so that the side of the test object faces upward. part; And A light source for emitting light; Including; And the mirror unit reflects light emitted from the light source to the first corner when one side of the inspection object faces upward. The method of claim 1, At least one inspection unit for receiving the light reflected from the inspection object to inspect the inspection object, And inspection of the front or rear surface of the inspection object located on the conveyor unit and inspection of the side and first corner portions of the inspection object located on the flipper unit while the inspection unit moves. The method of claim 2, And the inspection unit inspects the inspection object using pattern illumination. The method of claim 2, The inspection unit inspects one side and the first corner portion of the inspection object facing the inspection unit while moving in one direction when one side of the inspection object faces upward. The method of claim 2, And the mirror unit reflects the light reflected from the first corner toward the inspection unit such that the first corner is captured by the inspection unit when one side of the inspection object faces upward. The method of claim 1, The flipper portion includes a flipper clamp for fixing the inspection object, The flipper clamp is configured to fix the inspection object such that one side of the inspection object protrudes from one end of the rotating body. The method of claim 1, The mirror unit includes a mirror having a reflective surface and a mirror rotating member for rotating the mirror so that the angle of the light emitted from the light source and incident on the mirror with the reflective surface is adjusted. The method of claim 1, The flipper part may be inspected within a predetermined angle in a clockwise and counterclockwise direction in a posture in which the side of the inspection object is upward so that the second corner portion is inspected between the side and the front surface of the inspection object and between the side and the rear surface of the inspection object. An inspection device, characterized in that for rotating the inspection object. The method of claim 1, The conveyor unit, A rotating part disposed on a conveying path of the conveyor unit and rotating the inspection object in parallel with the front or rear surface of the inspection object in a posture in which the front or rear surface of the inspection object faces upward; And A clamp disposed on a conveyance path of the conveyor unit and fixing the inspection object while the front or rear surface of the inspection object is inspected; Inspection apparatus comprising a. A conveyor unit having a pair of rail bodies installed to enable the conveyor belt to travel, and moving the conveyor belt to a predetermined position for inspecting a first surface of the inspection object; And A pair of flipper bodies each having a rotating body rotatably coupled to the supporting body by a supporting body and a flipper shaft, a flipper belt installed to run on the rotating body, and between two adjacent surfaces of the inspection object. A flipper portion provided with a mirror portion provided in the rotating body for inspecting an edge portion, the flipper portion rotating the inspection object such that a second surface of the inspection object different from the first surface of the inspection object faces upward; And A light source for emitting light; Including; And the mirror unit is configured to reflect light emitted from the light source so that an edge portion between the second surface and the surfaces of the inspection target adjacent to the second surface is illuminated when the second surface of the inspection object faces upward. Device.

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