KR101399066B1 - Apparatus for inspecting steel ball of high-yield for increasing the productivity - Google Patents

Abstract

Disclosed is a steel ball inspection device. The steel ball inspection device comprises a steel ball supply unit (20) which supplies a steel ball to be inspected; a steel ball inspection unit (40) which photographs the steel ball and determines the defects of the steel ball; a steel ball classification unit (50) which classifies the steel ball according to an inspection result of the inspection unit; and a steel ball transfer unit (30) which receives the steel ball supplied from the steel ball supply unit and transfers the steel ball to the steel ball inspection unit and the steel ball classification unit in order. According to an embodiment of the present invention, the steel ball inspection device can accurately classifies a defective steel ball and a normal steel ball. According to an embodiment of the present invention, the steel ball inspection device has a simple structure so as to reduce manufacturing costs and chances of malfunction.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a high-yield steel ball inspection apparatus for improving productivity,

The present invention relates to a steel ball inspection apparatus, and more particularly, to a steel ball inspection apparatus capable of detecting the defect of a steel ball by photographing the entire surface of the ball, .

Steel ball is a ball made of metal and is basically used for all machinery. If the inside of the steel ball is empty, cracks and scratches are formed inside or outside of the steel ball, or if the outer shape of the steel ball is distorted, malfunction of the mechanical device may be caused.

Therefore, after the steel ball is manufactured, a steel ball inspection device is used to check whether or not the steel ball is normally manufactured.

The steel ball inspection system is widely divided into internal inspection for inspecting defects in steel balls, and external inspection for inspecting cracks, scratches, and contouring accuracy of the outside of steel balls. The inspection apparatus for inspecting the inside usually has a somewhat complicated structure, but the inspection apparatus for inspecting the outside can have a relatively simple structure because it is not necessary to precisely inspect the internal characteristics of the steel ball.

However, since the conventional steel ball inspection apparatus for external inspection has a relatively complicated structure, not only does it increase the manufacturing cost of the apparatus, but also has a high possibility of causing malfunction or malfunctions. Especially, There is a problem that it is difficult to increase the productivity because the inspection is difficult to proceed.

According to one embodiment of the present invention, there is provided a vision-based steel ball inspection apparatus capable of accurately classifying a defective steel ball and a normal ball.

According to an embodiment of the present invention, there is provided a steel ball inspection apparatus having a simple and simple structure, which can reduce the manufacturing cost and can easily break down or reduce the possibility of malfunction.

According to an embodiment of the present invention, there is provided a high-yield steel ball inspection apparatus capable of improving the productivity of a steel ball by promptly inspecting the ball with a simple processing step.

According to the embodiment of the present invention, in the steel ball inspection apparatus,

A steel ball supply unit for supplying a steel ball to be inspected; A steel ball inspection unit for photographing a steel ball to judge whether or not the ball is defective; A steel ball classifying unit for classifying the steel balls according to the inspection result of the inspection unit; And a steel ball transferring unit for receiving the steel balls supplied from the steel ball supply unit and sequentially transferring the balls to the steel ball inspection unit and the steel ball sorting unit,

At this time,

At least one camera for photographing a surface of one or more steel balls accommodated in the steel ball transfer unit; A rotating disk supporting the at least one steel ball received; A first driving motor for rotating the rotating disk; And a second driving motor for reciprocating the rotating disk in a linear direction,

As the rotary disk simultaneously rotates and linearly reciprocates by the driving of the first and second driving motors while the accommodated one or more steel balls are being photographed by the camera, And the entire surface of each of the steel balls is photographed by the camera by simultaneously performing rotational motion.

According to the embodiment of the present invention, the steel ball inspection apparatus can accurately classify the defective steel ball and the normal ball.

According to one embodiment of the present invention, the steel ball inspection apparatus has a simple and simple structure, which can reduce manufacturing cost and can easily break down or reduce the possibility of malfunction.

According to one embodiment of the present invention, the steel ball inspection apparatus has a simple processing step, and there is an advantage that the productivity of the steel ball can be improved by promptly inspecting the steel ball.

FIG. 1 and FIG. 2 are overall perspective views of a steel ball inspection apparatus according to an embodiment of the present invention,
3 is a front view of the steel ball inspection apparatus of one embodiment,
4 is a rear view of the steel ball inspection apparatus of one embodiment,
5 is a plan view of a steel ball inspection apparatus of one embodiment,
6A and 6B are a perspective view and an exploded perspective view, respectively, of a state in which a part of the structure of the steel ball supplying section 20 of the embodiment is removed,
7 is a perspective view showing the steel ball supplying section 20 of FIG. 6A from another angle,
8 is a perspective view for explaining a steel ball transferring unit 30 of one embodiment,
FIG. 9 is a perspective view showing a state in which a part of the structure of a steel ball inspection apparatus is removed in order to explain the operation of the steel ball transfer unit of one embodiment;
10 is a perspective view showing a state that a part of the steel ball inspection part is removed in order to explain the steel ball inspection part 40 of the embodiment,
Fig. 11 is a perspective view showing the steel ball inspection unit of Fig. 10 from another angle,
12 is a perspective view for explaining a steel ball sorting part 50 of an embodiment,
13A and 13B are perspective views illustrating a state in which a part of the steel ball separating portion is removed to explain the steel ball separating portion of one embodiment, and
14 is a perspective view for explaining a steel ball discharging portion 60 of one embodiment.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features, and advantages of the present invention will become more readily apparent from the following description of preferred embodiments with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. Rather, the embodiments disclosed herein are provided so that the disclosure can be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

In this specification, when an element is referred to as being "above" (or "below", "right", or "left") another element, ) Or it may mean that a third component may be interposed therebetween. Further, in the drawings, the thickness of the components is exaggerated for an effective description of the technical content.

Also, in this specification, expressions such as 'upper', 'lower (lower)', 'left', 'right', 'front', 'rear' And it is a relative expression used for convenience of explanation based on the drawings when describing the present invention with reference to the respective drawings.

Where the terms first, second, etc. are used herein to describe components, these components should not be limited by such terms. These terms have only been used to distinguish one component from another. The embodiments described and exemplified herein also include their complementary embodiments.

In the present specification, the singular form includes plural forms unless otherwise specified in the specification. The terms "comprise" and / or "comprising" used in the specification do not exclude the presence or addition of one or more other elements.

Hereinafter, the present invention will be described in detail with reference to the drawings. In describing the specific embodiments below, various specific details have been set forth in order to explain the invention in greater detail and to assist in understanding it. However, it will be appreciated by those skilled in the art that the present invention may be understood by those skilled in the art without departing from such specific details. In some cases, it should be mentioned in advance that it is common knowledge in describing an invention that parts not significantly related to the invention are not described in order to avoid confusion in explaining the present invention.

FIGS. 1 and 2 are a perspective view of a steel ball inspection apparatus according to an embodiment of the present invention, and FIGS. 3 to 5 are a front view, a rear view, and a plan view, respectively, of a steel ball inspection apparatus according to an embodiment.

1 to 5, a steel ball inspection apparatus according to an embodiment includes a steel ball supply unit 20, a steel ball transfer unit 30, a steel ball inspection unit 40, a steel ball classifying unit 50, and a steel ball discharge unit 60, .

The steel ball supplying section 20 is a unit for supplying a steel ball to be inspected to the ball testing device. In the illustrated embodiment, the steel ball feeder 20 includes a feeder main body 210 for aligning steel balls injected from the outside, and a sliding bar 220 for pushing the steel balls falling to the bottom of the main body 210 into the steel ball feeder 30 .

The steel ball transfer unit 30 is a unit for receiving steel balls supplied from the steel ball supply unit 20 and transferring them to the steel ball inspection unit 40 and the steel ball classifying unit 50 in order. In one embodiment, the steel ball transfer unit 30 includes a transfer source plate 310 disposed on the base frame 10 of the steel ball inspection apparatus and rotating, and a drive motor 320 for driving the transfer source plate 310. The transferring plate 310 includes a plurality of receiving holes 311 formed along the periphery of the disk. The steel balls supplied from the steel ball feeder 20 are seated in the receiving hole 311 and rotated so that the received steel balls are transferred to the steel ball inspection part 40 and the steel ball classifying part 50 .

The steel ball inspection unit 40 is a unit for photographing a steel ball and determining whether or not the ball is defective. The steel ball inspection part 40 includes at least one vision (camera) 410 for photographing a steel ball, a rotation disc 440 supporting the steel balls received in the receiving hole 311 of the transfer disc 310 and moving the balls, And a first drive motor 420 and a second drive motor 430 for linearly reciprocating the first and second drive motors 440 and 440. [

The steel ball classifying unit 50 is a unit for classifying steel balls into normal steel balls and bad steel balls according to the inspection result of the steel ball inspection unit 40. In the illustrated embodiment, the steel ball sorting portion 50 includes a plate 511 for opening and closing for supporting a steel ball received in the receiving hole 311 of the transfer source plate 310 from below, And a cylinder 520 for moving the opening / closing bar 510 connected to the support plate 511. The steel ball discharging portion 60 is a unit for discharging the steel balls classified by the steel ball classifying portion 50 to the outside of the inspection apparatus. In the illustrated embodiment, the steel ball discharge unit 60 includes a collecting cylinder 610 for collecting and sorting the classified steel balls into a normal state and a defective state, a conveyor belt 620 for conveying the steel balls collected in the collecting cylinder, A drive motor 640 for driving the part 620, and a discharge port 630 for discharging the transferred steel balls to the outside of the inspection apparatus for subsequent processing.

Although not shown in the drawing, the steel ball inspection apparatus according to an embodiment of the present invention further includes a control unit. The control unit can control the operations of the steel ball supply unit 20, the steel ball transfer unit 30, the steel ball inspection unit 40, the steel ball classifying unit 50, and the ball discharge unit 60.

For example, the control unit determines whether the ball is normal or defective according to the result of the inspection of the ball control unit 40. Further, on the basis of the determination result, the control section can control the steel ball separating section 50 to separately collect the steel balls from the bad steel balls and the normal steel balls, respectively.

The steel ball feeder 20 will now be described in detail with reference to Figs. 6A, 6B and 7.

6A and 6B are a perspective view and an exploded perspective view, respectively, of a state in which a part of the structure of the steel ball supplying section 20 of the embodiment is removed, and FIG. 7 is a perspective view showing the steel ball supplying section 20 of FIG. 6A from another angle.

In the illustrated embodiment, the steel ball supply unit 20 includes a supply unit main body 210, a sliding bar 220 connected to the outside of the main body, and a cylinder (230 in FIG. 1) for moving the sliding bar 220.

6A and 6B, the supply unit main body 210 shows a state in which the front case is removed. The supply part body 210 includes an injection hole 211 for injecting a steel ball from the outside. Although not shown, for example, a transfer hose is connected to the injection port 211, and the steel ball can be injected through the transfer hose into the supply main body 210 from the outside through the injection port 211 one by one.

The feeder body 210 may further include a protrusion 213 protruding from one side thereof and the protrusion 213 is connected to a base frame of the steel ball inspection apparatus or any structure connected to the base frame, 210 may be attached to the inspection apparatus. In the illustrated embodiment, a plurality of vertical bars (110 of FIG. 1) are coupled to an upper portion of the base frame 10 of the inspection apparatus, and a cylinder support plate (120 of FIG. 1) . The protruding portion 213 of the supply unit main body 210 is coupled to the lower surface of the cylinder support plate 120 so that the supply unit main body 210 is attached to the inspection apparatus.

As shown in the drawing, a passage is formed in the main body 210 to allow the steel ball to pass through and to descend in four directions. As a result, the steel balls injected into the injection port 211 are loaded in each of the four passages. On the lower surface of the supply part body 210, openings are formed so as to communicate with the four-way passage.

Although not shown, according to one embodiment, a lever may be provided at a branch point in the passageway to guide the balls into a specific passage. In other words, it is possible to actuate the lever as necessary to guide the steel ball to a specific desired passage in order to prevent the steel ball from accumulating in only one passage and not accumulating in the other passage.

The sliding bar 220 is connected to the feeder main body 210 at one side of the feeder main body 210 and is able to slide toward the feeder main body and includes a cylinder 230 for this purpose. The cylinder 230 is attached to the upper portion of the cylinder supporting plate 120. The sliding bar 220 includes a cylinder connecting plate 223 at an upper portion thereof and the piston rod of the cylinder 230 is coupled to the cylinder connecting plate 223 so that the sliding bar 220 can slide. The sliding bar 220 further includes a sliding plate 221 which is bent at approximately 90 degrees and held horizontally.

The sliding plate 221 is provided with a through hole 222 formed at a position corresponding to the vertical direction of the opening formed in the lower surface of the supply part body 210 when the sliding bar 220 is the farthest from the supply part body 210, . In the illustrated embodiment, there are four openings in the supply part body 210, so that four openings are formed in the lower surface of the supply part body 210, so that the sliding plate 221 is provided with four Through holes 222. As shown in FIG. In one embodiment, the diameter of the through-hole 222 is approximately equal to the diameter of the opening in the lower surface of the feeder body 210, and the thickness of the sliding plate 221 may be approximately equal to or slightly larger than the diameter of the steel ball. Therefore, the steel balls dropped through the opening of the supply unit body 210 can be placed in the through-hole 222 of the sliding plate 221. At this time, the steel ball placed in the through hole 222 is supported by the pedestal 201 located immediately below the sliding plate 221. It is preferable that the pedestal 201 is attached to the base frame 10 and the height of the pedestal 201 is approximately the same as the height of the conveying circular plate 310.

The steel balls injected into the four corners of the supply unit body 210 and dropped through the openings are held in the through holes 222 of the sliding plate 221 while being supported by the pedestal 201, The steel balls placed one by one in the plurality of through holes 222 of the sliding plate are transported toward the steel ball transporting unit 30 so that a plurality of the transporting plates 310 Receiving holes 311, respectively.

Now, the steel ball transferring unit 30 will be described in detail with reference to Figs. 8 and 9. Fig.

8 is a perspective view for explaining the steel ball transferring unit 30 of one embodiment. In one embodiment, the steel ball transfer section 30 includes a transfer origin plate 310 and a transfer drive motor 320. The transferring plate 310 is a member having a circular shape and is rotatably installed on the base frame 10 of the steel ball testing apparatus. The transporting plate 310 includes a plurality of receiving holes 311 capable of receiving steel balls one by one along the circumference of the disk. Each of the receiving holes 311 is in the form of a through hole passing through the upper and lower portions, and the diameter thereof is larger than the diameter of the steel ball.

The drive shaft 321 of the drive motor 320 for conveyance is connected to the center axis of the transfer source plate 310 to rotate the transfer source plate 310. The conveying drive motor 320 may be coupled to the inspection apparatus while being supported by the support frame 330 or the like on the cylinder support plate 120 and may be coupled to the inspection apparatus through the conveying disk 310 and the conveying drive motor 320 A structural member such as a gear box can be inserted and arranged.

In this configuration, the four steel balls, which fall through the four openings of the supply unit body 210 and are accommodated in the through-hole 222 of the sliding plate 221, are supported by a pedestal 201 attached to the base frame 10 . The sliding plate 221 is slid toward the feeder main body 210 and is transported to the transporting plate 310 so that the steel plate is accommodated in each of the four receiving holes 311 of the transporting plate 310, To the steel ball feeder (30).

9 is a perspective view showing a state in which a part of the structure of a steel ball inspection apparatus is removed in order to explain the operation of the steel ball transfer unit in one embodiment.

The steel ball received in the receiving hole 311 of the transfer disc 310 is supported by the base frame 10 while being transported from the steel ball supply unit 20 to the steel ball inspection unit 40. Thereafter, when the transfer source plate 310 is rotated by driving the transfer driving motor 320, the steel balls placed in the receiving hole 311 of the transfer source plate 310 are continuously held in the receiving hole 311 And moves together with the transfer plate 310.

In the illustrated embodiment, the steel ball supply unit 20, the steel ball inspection unit 40, and the steel ball classifying unit 50 are spaced apart from each other by approximately 90 degrees in the rotational direction of the transfer origin plate 310 along the periphery of the transfer origin plate 310 Respectively. Therefore, the steel balls supplied from the steel ball feeder 20 and received in the receiving hole 311 of the feeder board 320 can be transferred to the steel ball examiner 40 as the transfer ball rotates approximately 90 degrees.

At this time, the steel ball inspection unit 40 does not have the base frame 10, and instead, the rotation disc 440 is disposed directly below the transfer disc 310. Therefore, the steel balls transferred to the steel ball inspection unit 40 can be supported by the rotation disk 440.

In the illustrated embodiment, the steel ball supply unit 20 has been illustrated and described as supplying four balls at one time to the transfer plate 310, but the number of ball balls to be supplied at once may be changed according to the embodiment. For example, (20) can supply six balls of steel to the transfer plate (310) at a time. In this case, six balls are formed in the steel ball feeder main body 210, and the sliding plate 221 also includes six through-holes. Correspondingly, the number of the receiving holes 311 of the feeder plate 310 Those skilled in the art will appreciate that the position and number of the receiving holes 311 must be changed to accommodate six balls at a time.

On the other hand, in general, the steel ball injected into the steel ball inspection apparatus may be contaminated or contaminated on the surface of the steel ball during passing through the steel ball supply unit 20, the transfer unit 30, and the inspection unit 40. In this case, When the surface is photographed with a camera and examined, the steel ball may be erroneously judged as defective. Therefore, in order to clean the surfaces of the members such as the transfer disc 310 and the surface of the steel ball so that the original surface of the steel ball can be inspected as it is, a part of the steel ball inspection apparatus may be immersed in the cleaning liquid and operated. In this case, although not shown in the drawings, the cleaning liquid is contained in the cleaning liquid from a position below the base frame 10 of the inspection apparatus to a height at least covering the surface of the transfer origin plate 310.

Further, in the illustrated embodiment, a brush 721 for washing the transfer plate is arranged in a line on the upper surface of the transfer plate 310. The sole 721 is attached and fixed to the base frame 10 or the vertical bar 110 by a brush support 720. The sole 721 is always arranged to be in contact with the upper surface of the transfer plate 310. With this configuration, the surface of the transfer origin plate 310 can be automatically cleaned by the relative movement with the brush 721 while the transfer origin plate 310 rotates to transfer the steel balls.

The steel ball inspection section 40 will now be described in detail with reference to Figs. 3 to 5, and Figs. 10 and 11. Fig.

Referring again to FIGS. 3 to 5, the steel ball inspection unit 40 includes at least one camera 410 for shooting a steel ball received in the receiving hole 311 of the transfer plate. The camera 410 may be coupled to the camera support 411 as shown and attached to the inspection device. By attaching the lower end of the camera support base 411 to the upper portion of the cylinder support plate 120, the camera 410 can be positioned at a predetermined height above the base frame 10 of the steel ball inspection apparatus. Although two cameras are shown in the illustrated embodiment, the number and location of the cameras may vary depending on the embodiment.

The steel ball examination unit 40 includes a cylindrical window 413 formed vertically below the camera 411. The cylindrical window 413 has a substantially cylindrical shape, the upper side is open and the lower side is made of a transparent material such as glass.

As described above, when a steel ball is inspected in a state in which a part of the steel ball inspection apparatus is immersed in the cleaning liquid, the cylindrical window 413 is disposed so that the lower end of the cylindrical window 413 is positioned below the surface of the cleaning liquid. With this configuration, it is possible to prevent a situation in which light from the illumination device or the like is reflected on the surface of the cleaning liquid when the camera 410 is taken downward for the steel ball inspection, and the surface of the ball is not photographed.

10 is a perspective view showing a state in which a part of the steel ball inspection part is removed in order to explain the steel ball inspection part 40 in one embodiment and FIG. 11 is a perspective view showing the steel ball inspection part in FIG. 10 from another angle.

10 and 11, the steel ball inspection part 40 includes a rotating disk 440 for supporting at least one steel ball received in the transfer disk, a first driving motor 420 for rotating the rotating disk, And a second driving motor 430 that reciprocates in a linear direction.

The rotary disk 440 is disposed so as to partially overlap the transfer disk 310 when viewed from above. At this time, at least the receiving hole 311, which receives the steel balls to be inspected at one time by the steel ball inspection part 40, overlaps the rotating disk and the transfer disk so that all of the receiving holes 311 belong to the overlapped area. Further, the rotary disk 440 is disposed adjacent to the bottom of the transfer disk 310 when viewed from the side. Therefore, all of the steel balls to be inspected at one time are supported by the rotary disk 440, not by the base frame 10.

The driving shaft 423 of the first driving motor 420 is connected to the center shaft 441 of the rotating disk by a belt 460 as shown in FIG. Accordingly, the rotary disk 440 rotates about the central axis 441 by the driving of the first driving motor 420. The first drive motor 420 and the drive shaft 423 are supported by the support frame 421.

The drive shaft of the second drive motor 430 functions as a crankshaft 434. One end of the connecting rod 424 is eccentrically connected to the driving shaft of the second driving motor 430 and the other end of the connecting rod 424 is connected to the driving shaft 423 of the first driving motor 420. The second drive motor 430 and the crankshaft 434 are fixed to the base frame 10 while being supported by the support frame 431.

In this configuration, when the second driving motor 430 is driven, the connecting rod 424 connected to the crankshaft 434 linearly reciprocates. At this time, since the first driving motor 420, the driving shaft 423, and the rotating disk 440 are connected to each other by the supporting frame 421 composed of a plurality of vertical and / or horizontal members, As a result, the first drive motor 420, the drive shaft 423, and the rotary disk 440 are integrally slid by the second drive motor 430 and perform reciprocating linear motion. At this time, a plurality of guide members 491 and 492 can be arranged to guide reciprocating linear motion. The guide members 491 and 492 are connected to and fixed to the base frame 10 and are disposed adjacent to the left and right sides of the support frame 421. The support frame 421 receives the guide of the plurality of guide members 491 and 492 It is possible to perform a linear reciprocating motion.

The inspection method by the constitution of the steel ball inspection part 40 as described above is as follows. First, the transporting plate 310 stops rotating when the receiving hole 311 receiving the steel ball to be inspected reaches the area supported by the rotating disk 440. Accordingly, the steel ball is supported only by the rotating disk 440.

In this state, while the steel ball housed in the receiving hole 311 is photographed by the camera 440, the rotation disk 440 is rotated by the driving of the first and second driving motors 420 and 430 and the linear reciprocating motion So that the steel ball supported by the rotary disk 440 simultaneously performs the rotational motion and the linear motion in the receiving hole 311.

The rotational speed Vr of the steel ball due to the rotational motion of the rotating disk 440 is the linear velocity of the rotating disk at the position where the ball is placed on the rotating disk. When the rotating disk is rotating at the same angular speed, the linear speed of the rotating disk is proportional to the rotation change (that is, the distance between the central axis of the rotating disk and the steel ball).

Therefore, when the rotary disk 440 performs a linear reciprocating motion while the steel ball is rotated by the rotation of the rotary disk 440, the distance between the central axis of the rotary disk and the steel ball (i.e., the radius of rotation) The rotation speed Vr of the steel ball continuously changes.

If the ball rotates only in one direction, the camera 410 will not be able to properly photograph the surface near the axis of rotation of the ball. However, as described above, since the rotating speed Vr of the steel ball due to the rotating motion of the rotating disk is continuously varied by the linear reciprocating motion of the rotating disk, the rotating speed Vr of the rotating disk and the rotating disk The sum vector of the rotational speed Vs of the ball caused by the ball becomes continuously variable in the direction and the velocity, and thus the camera 410 can capture the entire surface of the ball.

Although not shown, the steel ball inspection apparatus may further include a control unit, and the rotary motion and linear motion of the rotary disc 440 may be controlled by the control unit. For example, the controller may individually control the rotational speed of the rotary disk 440 and the linear reciprocating speed by controlling the driving speeds of the first driving motor 420 and the second driving motor 430, respectively.

The steel ball sorting section 50 will now be described in detail with reference to Figs. 12, 13A and 13B.

FIG. 12 is a perspective view for explaining a steel ball sorting part 50 of an embodiment. FIG. 13A and FIG. 13B are perspective views of a state in which a part of the steel ball sorting part is removed in order to explain a steel ball sorting part of an embodiment.

In one embodiment, the steel ball separator 50 includes a cylinder 520 having a reciprocating piston rod 521 and a piston rod 521 connected to the cylinder to block the lower opening of the receiving hole 311 And an opening / closing board 511.

The cylinder 520 is attached and fixed to the upper or lower portion of the cylinder supporting plate 120. The opening / closing support plate 511 is connected to the piston rod 521 of the cylinder 520 by the opening / closing bar 510. That is, one end of the opening / closing bar 510 is connected to the piston rod 521 and the other end is connected to the opening / closing support plate 511.

At this time, the base frame 10 of the inspection apparatus is not present in a region overlapping the opening / closing support plate 511. That is, the first through hole is formed in this area of the base frame 10, and therefore the steel balls accommodated in the receiving hole 311 are supported only by the opening / closing support plate 511. Therefore, when the cylinder 520 is driven to move the opening / closing support plate 511 in the radially outward direction of the transfer plate 310, the lower portion of the accommodation hole 311 is opened, and when the opening / closing support plate 511 The steel ball will fall down.

The determination of whether or not the ball is normal and the ball grouping according to the determination can be controlled by the control unit (not shown). The control unit determines whether the steel ball is normal or defective according to the inspection result of the steel ball inspection unit 40, and based on the determination result, the steel ball classifying unit 50 separates and collects the steel ball from the bad ball and the normal ball .

For example, if the control unit determines that the ball is normal, the control unit operates the cylinder 520 to move the open / close support plate 511 in the radially outward direction of the support plate 310, The steel ball can be dropped down.

Meanwhile, the base frame 10 of the inspection apparatus may further include a second through-hole at a position spaced apart from the first through-hole by a predetermined angle in the rotation direction of the transfer source plate 310. If it is judged by the control unit that the steel ball is defective, the defective steel ball does not fall down due to the movement of the opening / closing support plate 511, but when the transfer original plate 310 further rotates and this defective steel ball comes to the position of the second through- Through the second through-hole.

That is, in the above example, in the case of a normal steel ball, the bottom of the receiving hole 311 is opened by the movement of the opening / closing support plate 511 and falls down through the first through hole, 511), and falls through the second through-hole.

However, it goes without saying that, in an alternative embodiment, it is also possible to set the failure ball to fall through the first through-hole and the normal ball to fall through the second through-hole.

In the illustrated embodiment, four cylinders 520 and four openable / closable pedestal plates 511 are shown. However, the present invention is not limited to this configuration. For example, the steel ball supply unit 20, the steel ball transfer unit 30, The steel ball sorting part 50 is also provided with the cylinder 520, the opening / closing bar 520, and the opening / closing bar 520. In the case of inspecting the supply and transporting of six steel balls as an alternative embodiment, (510), and an opening / closing plate (511), respectively.

The steel ball discharge unit 60 will now be described with reference to FIG. 14 is a perspective view for explaining the steel ball discharging portion 60 of one embodiment, and for the convenience of explanation, a part of the inspection apparatus is shown as being removed.

14, the steel ball discharging portion 60 includes a collecting box 610 for collecting and sorting the classified steel balls into a normal state and a defective state, a conveyance belt portion 620 for conveying the steel balls collected in the collecting box, A driving motor 640 for driving the belt portion 620, and a discharge port 630 for discharging the transferred steel balls to the outside of the inspection apparatus.

The collecting box 610 comprises a first collecting box for collecting the steel balls falling from the first through-hole of the above-described steel ball classifier 50, and a second collecting box for collecting the steel balls falling from the second through-holes.

Accordingly, the conveying belt portion 620 is constituted by a first conveying belt portion for conveying the steel balls collected in the first collecting barrel and a second conveying belt portion for conveying the steel balls collected in the second collecting barrel, A first discharge port for discharging the steel ball to the outside of the inspection apparatus and a second discharge port at the end of the second conveyance belt unit may be located at the end of the part.

Various modifications and variations of the present invention are possible in light of the above teachings. Therefore, the scope of the present invention should not be limited by the described embodiments, but should be determined by the scope of the appended claims, as well as the appended claims.

10: base frame 20:
30: transfer part 40: inspection part
50: Classification unit 60:
120: cylinder supporting plate 210: supply part body
211: Inlet port 220: Sliding bar
310: conveying plate 311: receiving hole
410: vision (camera) 420: first drive motor
430: second driving motor 440: rotating disk
510: opening / closing bar 520: cylinder
610: collecting box 620: conveying belt part
630: Outlet

Claims (9)

In the steel ball inspection apparatus,
A steel ball supplying section (20) for supplying a steel ball to be inspected;
A steel ball inspection unit (40) for photographing a steel ball to judge whether or not the ball is defective;
A steel ball classifying portion 50 for classifying the steel balls according to the inspection result of the steel ball inspection portion 40; And
And a steel ball transferring part (30) for receiving the steel balls supplied from the steel ball supplying part (20) and sequentially transferring the balls to the steel ball inspection part (40) and the steel ball classifying part (50)
The steel ball inspection section (40)
At least one camera (410) for photographing the surface of one or more steel balls contained in the steel ball transferring unit (30);
A rotating disk 440 for supporting the at least one steel ball received therein;
A first driving motor 420 for rotating the rotary disk 440; And
And a second driving motor (430) reciprocating the rotary disk (440) in a linear direction,
While the at least one contained steel ball is photographed by the camera 410, as the rotary disk 440 simultaneously performs the rotational motion and the linear reciprocating motion by the driving of the first and second driving motors, The entire surface of each steel ball is photographed by the camera,
The rotating disk 440 is rotated by the first driving motor 420 by a belt 460 connecting the driving shaft 423 of the first driving motor 420 and the center axis 441 of the rotating disk 440, Lt; / RTI >
The steel ball inspection section (40)
A crankshaft 434 rotated by the second driving motor 430; And
And a connecting rod 424 connecting the crank shaft 434 and the driving shaft 423 of the first driving motor 420,
The steel ball transfer section (30)
A transferring plate 310 rotatably installed on the base frame 10 of the steel ball testing apparatus and having a plurality of receiving holes 311 around which the steel balls can be received one by one; And
And a transfer drive motor 320 connected to the center axis of the transfer source plate 310 to rotate the transfer source plate 310,
Wherein each of the plurality of receiving holes (311) is in the form of a through hole passing through the upper and lower portions, and the diameter of the through hole is larger than the diameter of the steel ball. The method according to claim 1,
The steel ball accommodated in the receiving hole 311 of the transfer origin plate 310 is supported by the base frame 10 while being transferred from the steel ball supply unit 20 to the steel ball inspection unit 40, , It is supported by the rotary disk 440,
The steel ball supply unit 20, the steel ball inspection unit 40 and the steel ball classifying unit 50 are disposed at predetermined intervals in the rotation direction of the transfer source plate 310 along the circumference of the transfer source plate 310 Wherein the steel ball inspection apparatus comprises: delete 3. The method of claim 2,
The steel ball inspection unit 40 further includes a support frame that supports the first drive motor 420, the drive shaft 423 of the first drive motor, and the rotation disc 440,
The crankshaft 434 rotates and the connecting rod 424 connected to the crankshaft 434 rotates the driving shaft 423 of the first driving motor 420 Wherein the first driving motor (420), the driving shaft (423) of the first driving motor, and the rotating disk (440) slide integrally to perform a linear reciprocating motion. 3. The method of claim 2,
The ball testing apparatus further includes a controller for determining whether the ball is defective according to a result of the ball testing process,
Wherein the steel ball sorting unit (50) classifies the steel ball into a bad ball and a normal ball according to a result of the determination by the controller. 6. The apparatus according to claim 5, wherein the steel ball sorting portion (50)
A cylinder 520 having a reciprocating piston rod 521; And
And an opening / closing support plate 511 connected to the piston rod of the cylinder and supporting a steel ball received in the receiving hole 311 of the transfer origin plate 310 from below,
The steel ball housed in the receiving hole 311 is supported only by the opening / closing support plate 511 because the base frame 10 includes the first through hole in the area where the base frame 10 overlaps with the opening / closing support plate 511 A steel ball inspection device. The method according to claim 6,
When the control unit determines that the ball is normal, the cylinder 520 is operated to move the opening / closing support plate 511 in the radially outward direction of the transfer plate 310 so as to be supported by the opening / Wherein the steel balls fall downward. 8. The method of claim 7,
The base frame 10 may further include a second through-hole at a position spaced apart from the first through-hole by a predetermined angle in a rotation direction of the transfer source plate 310,
Wherein when the steel ball is determined to be defective by the control unit, the steel ball rotates to the transfer plate (310) and falls down through the second through-hole when the defective steel ball comes to the position of the second through-hole. 9. The method of claim 8,
The steel ball testing device further includes a steel ball discharging portion (60) for discharging the steel balls classified by the steel ball classifying portion (50) to the outside of the testing device,
The steel ball discharging portion (60)
A first collecting cylinder for collecting the steel balls falling from the first through-hole;
A second collecting cylinder for collecting the steel balls falling from the second through-hole; And
And a discharge port for discharging the steel balls collected in the first and second collecting tanks to the outside of the steel ball inspection apparatus.

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