KR101682091B1 - Apparatus for inspecting cap - Google Patents

Abstract

A cap inspection device is introduced.
The cap inspecting device includes a rail for moving the caps at regular intervals, an inner wall inspecting device provided at a plurality of locations spaced apart in the circumferential direction around the cap and inclined toward the cap for inspecting the inner wall of the cap, A plurality of outer wall testers spaced circumferentially about the cap to inspect the outer wall of the cap.

Description

APPARATUS FOR INSPECTING CAP

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a cap inspection apparatus, and more particularly, to a cap inspection apparatus capable of effectively inspecting all areas of an inner surface and an entire outer surface of a cap.

The preform for making the container comprises a neck formed at the open end and a tubular body integrally formed at the bottom of the neck which has the final container shape after the injection molding operation.

A cap is provided at the entrance of the body so that the container can be opened only when necessary. Since the contents stored in the body are discharged to the outside when the cap is completely assembled to the entrance of the body, a female screw and a male screw are formed on the inner diameter of the cap and the outer diameter of the entrance of the body.

Particularly, due to the characteristics of the use and the method of drinking, the hygienic aspect of the container is considered as a priority, and when the contents of the container are directly consumed, the quality of the entrance portion and the cap of the container, Is required.

In this connection, a "cap inspection apparatus (registered patent publication No. 10-1246149)"

However, in the prior art, when the outer surface of the cap is inspected using the hyper-frequency lens, the outer surface of the cap is inspected through the high-intensity lens, distortion may occur in the height direction of the cap, It may be difficult to perform high-precision dimensional inspection.

Further, when inspecting the inner surface of the cap by a tester disposed perpendicularly to the cap, a rectangular area of the inner wall is generated due to the thread or the tab formed on the inner wall of the cap. Therefore, There was a difficult point.

Patent Registration No. 10-1246149 (Mar. 3, 2013)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a cap inspecting apparatus capable of effectively inspecting all areas of an inner surface and an entire outer surface of a cap.

According to an aspect of the present invention, there is provided a cap inspecting apparatus including: a rail for moving a cap at regular intervals; An inner wall inspector provided at a plurality of circumferentially spaced apart centers around the cap, the inner wall inspector being disposed obliquely toward the cap to inspect the inner wall of the cap; And a plurality of outer wall testers spaced circumferentially about the cap to inspect an outer wall of the cap.

A mold number verifier for recognizing a mold number printed on an inner bottom surface of the cap; An edge portion inspecting device for inspecting ovality and foreign matter of the edge portion of the cap; An inner bottom surface tester for inspecting ovality and foreign matter with respect to an inner bottom surface of the cap; And an outer bottom surface tester for inspecting ovality and foreign matter with respect to the outer bottom surface of the cap.

A controller for determining whether the cap is defective through an image of the cap inspected by the inspector; An ejector unit for selectively ejecting caps determined to be defective by the controller; And a discharge unit for discharging the cap determined to be normal by the controller.

Also, the rails may be curved rails guided in a curved shape by arranging the caps at regular intervals. And a linear rail connected to the curved rail such that the cap is continuously moved.

Further, the linear rail includes a lower rail guided by the conveyor belt to the cap; And an upper rail on which the cap transferred from the lower rail is sucked and guided through the adsorption belt.

The mold number checker and the inner bottom tester may include a first inspection frame and a third inspection frame positioned on the movement path of the rail. A first image capturing unit and a third image capturing unit installed in the first inspection frame and the third inspection frame such that the focal point is directed to the inner bottom surface of the cap moving the rail; A first indirect reflection part and a third indirect reflection part respectively formed on the first inspection frame and the third inspection frame, each of which has a dome reflection surface; And a first light source unit and a third light source unit that emit light toward each of the dome reflection planes.

The edge inspecting device may further include a second inspection frame positioned on the movement path of the rail; A second image capturing unit installed in the second inspection frame such that a focal point is directed to an edge of the cap moving the rail; A second telecentric lens unit mounted on the second image capturing unit; A second indirect reflection part formed with a dome reflection surface and mounted on the second inspection frame; And a second light source unit for irradiating light toward the dome reflecting surface.

The outer side inspecting device further includes a fifth image capturing unit positioned to be horizontally positioned with respect to the movement path of the rail such that a focal point is directed to an outer wall of the cap moving the rail. And a fifth telecentric lens unit mounted on the fifth image capturing unit.

In addition, the outer bottom tester may include a sixth inspection frame positioned below the movement path of the rail; A sixth image capturing unit installed in the sixth inspection frame such that a focus is directed to an outer bottom surface of the cap moving the rail; A sixth telecentric lens unit mounted on the sixth image capturing unit; A sixth indirect reflection part formed with a dome reflection surface and mounted on the sixth inspection frame; And a sixth light source unit for emitting light toward the dome reflecting surface.

The curved rail may be provided with a rotating means for moving the cap in a curved shape.

The rotating means may include: a rotating wheel for receiving and transporting the respective caps through edge grooves formed at regular intervals on the outer periphery; And a rotating shaft for rotating the rotating wheel.

The linear rail may be provided with driving means for moving the cap linearly.

The driving unit may include a conveyance belt provided on the lower rail, the conveyance belt being supported by a plurality of lower support rollers to form a closed loop. A lower driving roller which is in contact with the conveyance belt to provide a driving force; An adsorption belt supported on a plurality of upper support rollers to form a closed loop and provided on the upper rail; And an upper driving roller which is brought into contact with the adsorption belt to provide a driving force.

The embodiment of the present invention has an effect that it is possible to effectively inspect the whole outer surface area including the outer wall and the outer bottom surface of the cap as well as the entire inner surface area including the edge portion, the inner bottom surface and the inner wall of the cap.

In addition, since the present embodiment can continuously inspect the inner surface and the outer surface of the cap along the curved rail and the straight rail, it is possible to precisely and quickly inspect the cap.

In addition, since the inspecting apparatus can be inspected by inspecting the inner wall of the cap by arranging the inspecting apparatus at a predetermined angle, it is possible to clearly inspect even the inside of a rectangular area of the inner wall, which was difficult to inspect with a general lens or a wide angle lens Can be effective.

In addition, since the outer wall of the cap can be inspected in the entire area by using a plurality of telecentric lenses in this embodiment, distortion in dimensions, shapes, foreign matters, etc. in the height direction It is possible to prevent the occurrence of the phenomenon, and it is possible to perform the dimensional inspection with high accuracy.

FIG. 1 is a perspective view showing a main configuration of a cap inspection apparatus according to an embodiment of the present invention.
2 is a side view showing a cap inspection apparatus according to an embodiment of the present invention.
3 is a plan view showing a cap inspection apparatus according to an embodiment of the present invention.
4 is a partial side sectional view showing a mold number tester and an inner bottom tester of a cap inspection apparatus according to an embodiment of the present invention.
5 is a partial side cross-sectional view illustrating an edge tester and an outer bottom tester of a cap inspection apparatus according to an embodiment of the present invention.
6 is a photograph of an inner bottom surface of a cap detected through a mold number tester of a cap inspection apparatus according to an embodiment of the present invention.
FIG. 7 is a photograph of an edge portion of a cap detected through an edge tester of a cap testing apparatus according to an embodiment of the present invention.
8 is a photograph of an inner bottom surface of a cap detected through an inner bottom tester of a cap testing apparatus according to an embodiment of the present invention.
9 is a photograph of an inner side wall of a cap detected through an inner wall tester of a cap testing apparatus according to an embodiment of the present invention.
10 is a photograph of an outer wall of a cap detected through an outer wall tester of a cap testing apparatus according to an embodiment of the present invention.
11 is a photograph of an outer bottom surface of a cap detected through an outer bottom tester of a cap testing apparatus according to an embodiment of the present invention.

In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

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

2 is a side view showing a cap inspection apparatus according to an embodiment of the present invention. FIG. 3 is a cross-sectional view of a cap inspection apparatus according to an embodiment of the present invention. 1 is a plan view showing a cap inspection apparatus according to an embodiment.

1 to 3, the cap inspection apparatus according to an embodiment of the present invention may include a rail, a tester, a controller 500, an ejector unit 400, and a discharge unit 600.

Specifically, the rails can be supported by a plurality of support frames 710 that form the skeleton of the cap inspection device, and can receive the cap C from the feeder device 720 to provide a path of movement of the cap C. have. The rail may include a curved rail 110 for guiding the cap C in a curved shape and a straight rail 120 for guiding the cap C in a straight line.

Here, the curved rail 110 can rotate the cap C in a curved shape through the rotating means 130 while the caps C are arranged at regular intervals. The rotating means 130 includes a rotating wheel 131 for receiving and transporting the respective caps C at predetermined intervals through edge grooves 133 formed on the outer peripheral edge thereof, And a rotating shaft 132 connected to the center of the shaft 131. For example, when the cap C is positioned in the edge groove 133 of the rotary wheel 131 in the curved rail 110, the cap C is rotated by the rotation of the rotary shaft 132, And the positional interference and the image interference between the adjacent caps C are prevented at the time of inspecting the cap C, so that a stable and accurate image can be obtained.

And the straight rail 120 is continuously connected to the curved rail 110, so that the cap C can be linearly conveyed. The linear rail 120 includes a lower rail 120a which is linearly guided by loading the cap C on the upper surface of the conveyance belt 142 and a lower rail 120b which is positioned above the lower rail 120a and which adsorbs the upper portion of the cap C And may include an upper rail 120b that is guided and guided through the belt 144. [ The end of the upper rail 120b and the end of the lower rail 120a are overlapped with each other so that the cap C moved to the end of the lower rail 120a passes through the upper rail 120b And then moved along the upper rail 120b.

The lower rail 120a and the upper rail 120b may be provided with driving means 140 for moving the cap C linearly. The driving means 140 includes a conveyance belt 142 supported by a plurality of lower support rollers 141a and forming a closed loop in the lower rail 120a and a lower driving roller 142 contacting the conveyance belt 142 to provide a driving force. And a cap C which is supported by a plurality of upper support rollers 141b and is connected to a suction device for air adsorption so as to form a closed loop in the upper rail 120b and moved from the lower rail 120a, And an upper driving roller 143b which is in contact with the suction belt 144 and provides a driving force.

Accordingly, when the cap C is positioned on the rotary belt on the lower rail 120a of the straight rail 120, the cap C can be stably moved at a constant speed and interval by the circular movement of the rotary belt And then moved to the upper rail 120b through air adsorption of the adsorption belt 144 and then stably moved at a constant speed and interval by the cyclic movement of the adsorption belt 144. [

Although the lower rail 120a, the upper rail 120b and the lower rail 120a are sequentially disposed along the advancing direction of the cap C in the present embodiment, the lower rail 120a, the upper rail 120b, May be variously changed according to the design environment of the cap inspection apparatus.

The tester may include a mold number tester 210, an edge tester 220, an inner bottom tester 230, an inner wall tester 240, an outer wall tester 310 and an outer bottom tester 320. In the present embodiment, the cap C for moving the rails is described as an example in which the inner bottom surface faces upward, but the spirit of the present invention is not limited thereto. For example, the cap C may be in a state in which its inner bottom surface faces downward, in which case the position of the tester may be switched accordingly.

FIG. 4 is a partial side sectional view showing a mold number inspecting apparatus and an inner bottom inspecting apparatus of a cap inspecting apparatus according to an embodiment of the present invention, FIG. 5 is a sectional side view of the edge inspecting apparatus and inspecting apparatus of a cap inspecting apparatus according to an embodiment of the present invention, Sectional side view showing the outer bottom surface tester.

4 to 5, the mold number checker 210 is located above the entrance of the curved rail 110 and is provided with a cap C supplied from the feeder device 720 to the curved rail 110, It is possible to take an image of the inner bottom surface. The mold number checker 210 may transmit the image signal for the captured inner bottom surface to the controller 500 in order to selectively recognize the mold number printed on the inner bottom surface of the cap C. [

The mold number inspecting device 210 includes a first inspection frame 211 mounted on a support frame so as to be positioned on an entrance side movement path of the curved rail 110 and a second inspection frame 211 having a focus so as to face the inner bottom surface of the cap C A first image capturing unit 212 installed in the inspection frame 211, a first indirect reflection unit 213 having a dome reflection surface 201 and a second indirect reflection unit 213 having a dome reflection surface 201, 1 light source unit 214 as shown in FIG. The cap C on which the inner bottom surface is imaged through the mold number inspecting device 210 can be moved along the curved rail 110 to the position where the edge inspecting device 220 is located.

The edge inspecting device 220 can be positioned above the curved rail 110 to photograph the upper edge of the cap C that moves the curved rail 110. The image signal of the edge portion photographed by the edge inspecting device 220 is sent to the controller 500 to check the ovality of the upper edge portion of the cap C and to check the ovality of the foreign substance Foreign matter, scratches, scratches, contamination ...) may be conducted.

The edge inspecting device 220 includes a second inspection frame 221 mounted on the support frame 710 so as to be positioned on the movement path of the curved rail 110 and a second inspection frame 221 having a focal point positioned on the upper edge of the cap C A second telecentric lens section 225 mounted on the second image capturing section 222 and a second telecentric lens section 225 mounted on the second telescopic lens section 221 on which the dome reflecting surface 201 is formed A second indirect reflection portion 223, and a second light source portion 224 that emits light toward the dome reflection surface 201. Here, since the second telecentric lens portion 225 can observe and display the planar object of the cap C at the same perspective angle, it is possible to increase the discriminating power of the foreign substance present in the upper edge portion of the cap C have. The cap C that has been photographed with respect to the upper edge portion of the edge inspection unit 220 can be moved along the curved rail 110 to a position where the inner bottom surface tester 230 is located.

The inner bottom tester 230 is positioned on the upper side of the curved rail 110 and can photograph the inner bottom surface of the cap C. [ Since the image signal of the captured inner bottom surface is transmitted to the controller 500, the inspection of foreign objects (e.g., contaminants, foreign matter, scratches, contamination, etc.) on the inner bottom surface of the cap C .

The inner bottom tester 230 includes a third inspection frame 231 mounted on the support frame so as to be positioned on the path of travel of the curved rail 110 and a third inspection frame 231 having a focal point facing the inner bottom surface of the cap C A third image capturing unit 232 provided in the inspection frame 231, a third indirect reflection unit 233 formed with a dome reflection surface 201, And a light source unit 234. The cap C having been imaged with respect to the inner bottom surface through the inner bottom tester 230 can be moved along the curved rail 110 to the point where the inner side tester 240 is located.

1 and 3, the inner side tester 240 is positioned on the upper side of the curved rail 110 and can photograph the inner side wall of the cap C. As shown in FIG. The image signal for the captured inner wall is transmitted to the controller 500 so that inspection of foreign objects (e.g., contaminants, foreign matter, scratches, scratches, contamination, etc.) to the inner surface of the cap C can be performed .

In particular, the inner sidewall tester 240 may be provided in a plurality of locations spaced circumferentially around the cap C. In this embodiment, four inner side wall inspectors 240 are disposed at 90 degree intervals in the circumferential direction around the cap C, but the angle at which the 360 degrees front area with respect to the inner wall of the cap C can be inspected The number and arrangement angles of the inspection devices may be variously changed. For example, the arrangement angles of the inspectors may be arranged at various angles of 60 degrees and 120 degrees in addition to 90 degrees, and the number of the inner wall inspectors 240 may also be changed according to the arrangement angles.

The four inner side wall inspectors 240 are arranged to be inclined at a predetermined angle so as to inspect the inner wall of the cap C so that it is difficult to inspect them with a general lens or a wide angle lens due to the thread or the tab of the inner wall The foreign matter in the rectangular area of the inner wall can be clearly inspected. The cap C that has been photographed with respect to the inner wall through the sidewall tester 240 is moved from the curved rail 110 to the lower rail 120a of the straight rail 120 and then the outer wall tester 310 To the upper rail 120b.

In the present embodiment, the cap C is described as having an inner thread, but the spirit of the present invention is not limited to this, and it is possible to inspect the cap C having an arbitrary inner shape. In this embodiment, the cap C may be a cap C of a different kind.

As shown in FIG. 3, the outside wall tester 310 is located at the same height as the movement path of the upper rail 120b, and can photograph the outer wall of the cap C. FIG. The image signal of the outer wall photographed by the outer wall inspector 310 is transmitted to the controller 500 so that the image of the outer wall of the cap C can be inspected with high precision and the foreign matter (e.g., contaminants, foreign matter, scratches, scratches, Contamination ...) can be done.

Particularly, the outer side tester 310 is composed of four pieces located at the same height as the movement path of the linear rail 120. These four outer side tester 310 are provided on the cab (not shown) so as not to interfere with the movement path of the linear rail 120. [ C in the circumferential direction. Each of the outside wall inspectors 310 includes a fifth image capturing unit 312 whose focal point is directed toward the outer wall of the cap C and a fifth telecentric lens unit 315 mounted to the fifth image capturing unit 312. [ . ≪ / RTI >

As described above, the outside wall inspecting apparatus 310 uses a telecentric lens to inspect the outer wall of the cap C in all directions in four directions, so that the outer surface of the cap C is exposed at one time It is possible to prevent the occurrence of distortion of dimensions, shapes, foreign matters and the like in the height direction of the cap as compared with the case of using a hypercentric lens which can be inspected, and it is possible to perform highly accurate dimensional inspection. The cap C that has been photographed with respect to the outer wall through the outer wall inspecting apparatus 310 can be moved along the upper rail 120b to a position where the outer bottom inspecting apparatus 320 is located.

The outer bottom surface tester 320 can be positioned on the lower side of the upper rail 120b so that the lens faces the outer bottom surface of the cap C so that the outer bottom surface of the cap C can be photographed. The image signal of the outer bottom surface of the cap C photographed by the outside wall inspector 310 is transmitted to the controller 500 so that the degree of ovality and foreign matter (e.g., contaminants, foreign matter, Miss print, print offset, print color ...) can be checked.

As shown in FIGS. 1 and 5, the outer bottom tester 320 includes a sixth inspection frame 321 mounted on the support frame so as to be positioned below the lower rail 120a, A sixth image capturing unit 322 installed on the sixth inspection frame 321 so as to face the outer bottom surface of the cap C to be mounted on the sixth image capturing unit 322 and a sixth telecentric lens unit A sixth indirect reflection portion 323 having a dome reflection surface 201 and a sixth light source portion 325 for reflecting light toward the reflection surface. The cap C having taken an image of the outer bottom surface through the outer bottom tester 320 may be moved to the lower rail 120a and then discharged to the outside through the discharging unit 600. [

The controller 500 may display an image of the cap C received from the tester on a monitor (not shown), and may analyze the image signal to determine whether the cap C is defective. As a result of the determination, if it is determined that the cap C is defective, the controller 500 may apply an operation signal to the ejector unit 400 so that the defective cap C is selectively ejected.

For example, the controller 500 receives an image signal for the mold number printed on the inner bottom surface of the cap C from the mold number checker 210, and can select a dimension allowable range according to a predetermined mold number, It is possible to determine whether the dimension of the outer wall of the cap C measured by the outer wall tester 310 is bad or not within the predetermined dimensional tolerance.

The controller 500 receives the image signal of the degree of ovality with respect to the upper edge portion and the outer bottom surface of the cap C from the edge portion inspecting device 220 and the outer bottom inspecting device 320, The upper edge portion and the outer bottom surface of the inner surface of the inner bottom surface of the inner surface of the outer surface meet the predetermined reference value.

In addition, the controller 500 can be installed on the upper side of the cap C from the edge inspecting machine 220, the inner bottom inspecting machine 230, the inner side inspecting machine 240, the outer side inspecting machine 310 and the outer bottom inspecting machine 320 (E.g., contaminants, foreign matter, scratches, missprints, print offsets, print colors, etc.) exist on the edges, the inner bottom surface, the inner wall surface, the outer wall surface and the outer bottom surface.

The controller 500 includes an electric field panel for controlling power supply required for inspecting the cap C and for processing a control signal, a computer having software for cap inspection, an electric field panel, and a processing signal provided from the computer The monitor may include a monitor.

The ejector unit 400 receives an operation signal from the controller 500 and can selectively eject the defective cap C determined to be defective by the controller 500. [ The ejector unit 400 includes a discharge pipe 401 provided at one side of the linear rail 120 for discharging the defective cap C to the outside and a discharge pipe 401 for receiving the operation signal from the controller 500, And an actuator 402 for pushing the defective cap C out of the cap C to the discharge pipe 401.

The ejector unit 400 may be divided into a first ejector unit 400a and a second ejector unit 400b depending on the installation location. The first ejector unit 400a is installed on the inlet side of the linear rail 120 and selects the defective cap C detected by the edge inspecting machine 220, the inner bottom inspecting machine 230 and the inner side inspecting machine 240 And the second ejector unit 400b is installed on the outlet side of the straight rail 120 to select the defective cap C detected by the outside wall inspecting device 310 and the outside bottom inspecting device 320 And can be discharged to the outside.

The discharge unit 600 is connected to the outlet side of the linear rail 120 and is connected to a cap C not removed by the ejector unit 400, that is, a cap C normally judged by the controller 500 It is possible to provide a movement path for discharging to the outside.

When discharging the cap C to the outside, the discharging unit 600 can guide the cap inspecting device to one side in the width direction or the other side in the width direction through the rotating distribution plate (not shown).

Hereinafter, the operation and effect of the cap C inspection apparatus according to the embodiment of the present invention having the above-described configuration will be described.

FIG. 6 is a photograph of an inner bottom surface of a cap detected through a mold number tester of a cap testing apparatus according to an embodiment of the present invention. FIG. 7 is a side view of a cap inspection apparatus according to an embodiment of the present invention. 8 is a photograph of the inner bottom surface of the cap detected through the inner bottom tester of the cap testing apparatus according to the embodiment of the present invention, FIG. 10 is a photograph of the inner wall of the cap detected through the inner wall tester of the cap testing apparatus according to an embodiment of the present invention. FIG. 11 is a photograph of the outer bottom surface of the cap detected through the outer bottom tester of the cap testing apparatus according to an embodiment of the present invention. FIG.

First, when the cap C is inserted into the curved rail 110 through the feeder device 720 and then placed in the edge groove 133 of the rotary wheel 131, the cap C is inserted into the edge groove 133 And can be moved along the curved rail 110 at a constant speed and interval by the rotation of the rotary shaft 132 in a held state.

In this process, the cap C passes through the mold number inspecting device 210, the edge inspecting device 220, the inner bottom inspecting device 230 and the inner side inspecting device 240, , The inner bottom surface and the inner wall can be inspected.

6, when the cap C is positioned on the curved rail 110 where the mold number inspecting device 210 is located, the mold number inspecting device 210 inspects the inner bottom surface of the cap C When the cap C is positioned on the curved rail 110 on which the edge inspecting apparatus 220 is positioned as shown in FIG. 7, the edge inspectors 220 ), The image of the ovality of the edge portion and the image of the foreign object can be photographed. At this time, the controller 500 can display the mold number, the ovality and the foreign object in a specific color in the photographed image and display it on the monitor. If the measured ovality deviates from the preset ovality or displays a foreign object, (C) can be judged as bad (Bad).

8, when the cap C is positioned on the curved rail 110 where the inner bottom surface tester 230 is located, the inner bottom surface tester 230 detects the image of the foreign object on the inner bottom surface Can be photographed. At this time, the controller 500 displays the foreign object in a specific color in the photographed image and displays it on the monitor, and determines that the cap C is bad.

9, when the cap C is positioned on the curved rail 110 on which the inner wall tester 240 is located, the inner wall tester 240 inspects the image of the outer wall of the inner wall, . At this time, the controller 500 displays the foreign object in a specific color in the photographed image and displays it on the monitor, and determines that the cap C is bad.

Thereafter, when the cap C is moved from the curved rail 110 to the lower rail 120a of the straight rail 120, the lower rail 120a is rotated at a constant speed and at a predetermined interval by the rotation belt of the lower rail 120a. And is moved along the upper rail 120b through the air suction of the suction belt 144 and then moved to the lower rail 120a located at the rear end of the upper rail 120b to be discharged to the discharge unit 600). ≪ / RTI >

In this process, the cap C can be inspected on the outer wall and the outer bottom surface of the cap C through the outer wall inspecting device 310 and the outer bottom inspecting device 320, and the cap C Can be selectively discharged by the ejector unit 400. [

10, when the cap C is positioned on the upper rail 120b on which the outside wall inspecting apparatus 310 is located, the outside wall inspecting apparatus 310 inspects the outside wall of the cap C The image of the foreign object can be inspected. Here, the controller 500 displays the dimensions of the outer wall and the foreign object in a specific color and displays it on the monitor. If the dimension of the photographed outer wall deviates from the predetermined dimensional allowance range or a foreign object is displayed, (Bad).

11, when the cap C is positioned on the upper rail 120b on which the outer bottom surface tester 320 is located, the outer bottom surface tester 320 is positioned on the outer bottom surface of the cap C Along with the ovoidity test, a foreign body test can proceed. At this time, the controller 500 can display the ovality and foreign matter in a specific color and display it on the monitor. If the measured ovality deviates from the preset ovality or displays a foreign object, the cap C is bad ). ≪ / RTI >

The cap C determined to be defective by the inspection unit described above can be selectively discharged through the ejector unit 400 and discharged to the outside and the remaining cap C not determined to be defective is discharged by the discharge unit 600 And can be distributed to one side in the width direction or the other side in the width direction of the cap inspection apparatus.

As described above, the present invention can effectively inspect the entire outer surface area including the outer wall and the outer bottom surface of the cap as well as the entire inner surface area including the edge portion, the inner bottom surface and the inner wall of the cap, The outer wall of the cap can be inspected in the entire area using a telecentric lens, and a high-precision dimension It is possible to perform inspection.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the present invention is not limited to the disclosed exemplary embodiments. It will also be appreciated that many modifications and variations will be apparent to those skilled in the art without departing from the scope of the invention.

100: support frame 110: curved rail
120: linear rail 120a: lower rail
120b: upper rail 210: mold number checker
220: Edge Inspector 230: Inner Bottom Inspector
240: Inner wall inspecting device 310: Outside wall inspecting device
320: outer bottom surface tester 400: ejector unit
400a: first ejector unit 400b: second ejector unit
500: controller 600: exhaust unit

Claims (13)

A rail for moving the cap at regular intervals; An inner wall inspector provided at a plurality of circumferentially spaced apart centers around the cap, the inner wall inspector being disposed obliquely toward the cap to inspect the inner wall of the cap; A plurality of outer wall inspectors spaced circumferentially about the cap to inspect an outer wall of the cap; A mold number verifier for recognizing the mold number printed on the inner bottom surface of the cap; An edge portion inspecting device for inspecting ovality and foreign matter of the edge portion of the cap; An inner bottom surface tester for inspecting ovality and foreign matter with respect to an inner bottom surface of the cap; An outer bottom inspecting device for inspecting ovality and foreign matter with respect to an outer bottom surface of the cap; A controller for determining whether the cap is defective through an image of the cap inspected by the inspector; An ejector unit for selectively ejecting caps determined to be defective by the controller; And a discharging unit for discharging the cap determined to be normal by the controller,
The controller receives an image signal of the mold number printed on the inner bottom surface of the cap from the mold number checker, selects a tolerance range according to a predetermined mold number, and, within the selected tolerance range, And a controller for receiving the image signal of the degree of ovality with respect to the upper edge and the outer bottom of the cap from the edge inspecting device and the outer bottom inspecting device, The inner side inspecting device, the inner side inspecting device, the outer side inspecting device, and the outer bottom inspecting device, and determines whether or not the ovality of the upper edge portion and the outer bottom surface of the cap conforms to a predetermined reference value, On the upper edge portion of the cap, the inner bottom surface, the inner wall, the outer wall and the outer bottom surface It determines whether or not water is present, and, if the defect is determined whether or not the cap, and applied to the operation signal to the ejector unit is determined as defective cap that is selectively discharged,
Wherein the ejector unit includes a discharge pipe for discharging the cap determined to be defective to the outside, and an actuator for receiving an operation signal from the controller and selectively pushing the cap determined to be defective from the cap to the discharge pipe,
Wherein the rail includes a curved rail guided in a curved line by arranging the caps at regular intervals and a linear rail connected to the curved rail for continuously moving the cap, And an upper rail guided by the suction belt to guide the cap transferred from the lower rail. delete delete delete delete The method according to claim 1,
The mold number checker and the inner bottom checker
A first inspection frame and a third inspection frame positioned on the movement path of the rail;
A first image capturing unit and a third image capturing unit installed in the first inspection frame and the third inspection frame such that the focal point is directed to the inner bottom surface of the cap moving the rail;
A first indirect reflection part and a third indirect reflection part respectively formed on the first inspection frame and the third inspection frame, each of which has a dome reflection surface; And
And a first light source unit and a third light source unit which emit light toward each of the dome reflection planes. The method according to claim 1,
The edge checker
A second inspection frame positioned on the movement path of the rail;
A second image capturing unit installed in the second inspection frame such that a focal point is directed to an edge of the cap moving the rail;
A second telecentric lens unit mounted on the second image capturing unit;
A second indirect reflection part formed with a dome reflection surface and mounted on the second inspection frame; And
And a second light source unit for irradiating light toward the dome reflecting surface. The method according to claim 1,
The outer wall inspector
A fifth image capturing unit positioned to be horizontally positioned with respect to the movement path of the rail such that a focus is directed to an outer wall of the cap moving the rail; And
And a fifth telecentric lens unit mounted on the fifth image capturing unit. The method according to claim 1,
The outer bottom checker
A sixth inspection frame positioned below the movement path of the rail;
A sixth image capturing unit installed in the sixth inspection frame such that a focus is directed to an outer bottom surface of the cap moving the rail;
A sixth telecentric lens unit mounted on the sixth image capturing unit;
A sixth indirect reflection part formed with a dome reflection surface and mounted on the sixth inspection frame; And
And a sixth light source unit for irradiating light toward the dome reflection surface. The method according to claim 1,
Wherein the curved rail is provided with a rotating means for moving the cap in a curved shape. 11. The method of claim 10,
The rotating means
A rotary wheel for receiving and transporting the respective caps through edge grooves formed at regular intervals on the outer periphery; And
And a rotating shaft for rotating the rotating wheel. The method according to claim 1,
Wherein the linear rail is provided with driving means for moving the cap in a straight line shape. 13. The method of claim 12,
The driving means
A conveyance belt supported on the plurality of lower support rollers to form a closed loop, and provided on the lower rail;
A lower driving roller which is in contact with the conveyance belt to provide a driving force;
An adsorption belt supported on a plurality of upper support rollers to form a closed loop and provided on the upper rail; And
And an upper driving roller which is brought into contact with the suction belt to provide a driving force.

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