JPS586884B2 - Inspection equipment for rotating bodies - Google Patents

Description

[Detailed Description of the Invention] This invention deals with scratches on the outer surface of rotating bodies such as rollers and rings.
The present invention relates to a rotating body inspection device for inspecting roughness, black scale, rust, dimensions, etc.

A conventional inspection device for a rotating body, as shown in Japanese Utility Model Application Laid-open No. 50-122246, supplies a rotating body onto a pair of rollers rotating in the same direction, shines light on the outer diameter surface of the rotating body, and
The outer diameter surface of the rotating body is inspected for scratches, roughness, black scale, rust, etc. using the light reflected from the rotating body, and the inspected rotating body is ejected from a pair of rollers. Rotating bodies were sorted into good and defective products near a pair of rollers.

Therefore, there is a feeding device, a pair of rollers, and a discharge device in the same place, and the sorting device is also located near the pair of rollers, so many devices are crowded together in a small area, resulting in space constraints. It is difficult to inspect both the condition of the radial surface and the end face, clean the rotating body before inspection, and inspect the outer diameter of the rotating body. Since there are three processes: supply, inspection, and discharge, the time from completing the inspection of one rotating body to completing the inspection of the next rotating body is the feeding time of the rotating body, and the time required to feed the rotating body onto a pair of rollers. The time required for the rotated body to be stabilized to the extent that it does not interfere with the inspection, the inspection time, and the evacuation time is at least four times. There were drawbacks.

This invention can inspect both the condition of the outer diameter surface and the end face of the rotating body, and can inspect the outer diameter dimension of the rotating body, clean the rotating body before inspection, and inspect the rotating body on the rotating plate. It is also possible to sort by good and defective products, sort by outer diameter size, and discharge.This allows a large number of rotating bodies to be inspected, and the operation of the rotating bodies is stable, with fewer troubles during transportation and inspections. The purpose is to provide a reliable inspection device for rotating bodies.

Next, one embodiment of the present invention will be described based on the drawings.

In FIGS. 1 and 2, a main shaft 1 is fixed at both ends to a base 2 and a main shaft support bracket 3 fixed to the base 2, and the lower side of the main shaft 1 has a thicker wall on the side of a feeding device 21, which will be described later. A sleeve 4, which is eccentric as shown in FIG. 1, is integrally arranged with the main shaft 1.

A rotating plate receiving member 5 is fitted into the sleeve 4 via a bearing 6, and a rotating plate driving sprocket 7 is fixed to the lower side of the rotating plate receiving member 5, and this rotating plate driving sprocket 7 is not shown in the figure. Although not shown, it is connected via a chain 8 to a motor disposed below a pulse motor 14, which will be described later.

A rotary plate 9 is fixed on the upper surface of the rotary plate receiving member 5,
The upper surface of this rotating plate 9 is made of magnetic rubber 9a, and this magnetic rubber 9a is coated on the upper surface of the rotating plate lower member 9b.

Therefore, the upper surface of the rotating plate 9 is a permanent magnet, and the upper surface of the rotating plate 9 is magnetized by this permanent magnet.

A holding member 10 is fitted on the upper side of the main shaft 1 via a bearing 11, and this holding member 10 is formed in a cylindrical shape with a flange on the lower side.

A holding member driving sprocket 12 is fixed on the upper side of the holding member 10, and this holding member driving sprocket 1
2 is connected to a pulse motor 14 via a chain 13.

A required number of pockets 16 for receiving the rotating body 15 are formed at equal intervals on the lower outer periphery of the holding member 10, and the side surface 16a of the pocket 16 on the side in contact with the rotating body 15, that is, the side surface 16a on the counter-rotation direction side is magnetically This magnetized rubber 17 is attached to the pillar 18 of the holding member.
covered with.

Therefore, the side surface 16a of the pocket on the side in contact with the rotating body is a magnet, that is, a permanent magnet.

Further, the height of the outer circumferential upper end 10a of the holding member 10 is set from the highest point of the small diameter side end surface 15a of the rotating body so that the air blown out from the rotating body discharge air pipe 22a, which will be described later, hits the small diameter side end surface 15a of the rotating body. It's a little lower.

A casing 20 fixed to the base 2 is disposed on the outer periphery of the rotary plate 9, and the height of the casing 20 is such that approximately half the circumference on the front side, that is, approximately half the circumference on the inspection device 25 side to be described later, is the upper outer circumference end 9C of the rotary plate 9. and is slightly lower than the center of the rotary body 15, and the discharge sorting device 22 side, which will be described later, is slightly lower than the height of the outer peripheral upper end 9C of the rotary plate 9.

A supply device 21 for supplying the rotating body 15 to the pocket 16 includes a tube 21a and a tube support bracket 2.
A discharge sorting device 22 is disposed at the rear on the opposite side of the supply device 21, and this discharge sorting device 22 uses rotary body discharge air to discharge defective rotary bodies 15 into a container 23 The pipe 22a and the rotating body 15 of good quality are placed in the container 2.
The discharge plate 22b is arranged between the rotary plate 9 and the holding member 10 and is fixed to the casing 20.

An inspection device 25 for inspecting the rotating body 15 is disposed between the supply device 21 and the discharge sorting device 22, that is, in front, and this inspection device 25 includes a light source that shines light on the outer diameter surface of the rotating body 15. 25a, a light receiver 25b that receives light reflected from the outer diameter surface of the rotating body 15, another light source 25G that applies light to the end surface of the rotating body 15, and a light source 25c (not shown).
and another light receiver which is disposed below the rotating body 15 and receives light reflected from the end surface of the rotating body 15.

With the above configuration, the rotary plate 9 is continuously rotated in a counterclockwise direction when viewed from above using the motor disposed below the pulse motor 14 as a drive source, and the holding member 10 is rotated using the pulse motor 14 as a drive source. When inspecting the rotating body 15, it rotates intermittently in the same clockwise direction as viewed from above so that the rotation stops, and the rotating body 15 is inserted into the tube 21a of the supply device.
When the rollers are inserted in step 5, when the pocket 16 of the holding member comes to the position of the tube 21a, the rotating body 15 is pushed by the gravity of the rotating body 15 inserted later and enters the pocket 16.

The outer diameter surface of the rotating body 15 is in contact with the rotating plate 9 and the side surface 16a of the pocket on the side where the rotating body contacts, the rotating body 15 is rotated by the rotating plate 9, and the rotating body 15 is held by the holding member 10. It revolves approximately around the center of rotation.

At the position of the front half circumference of the holding member 10, as shown in FIG. The speed a of the rotating plate 9 is the speed a of the rotating plate 9 in the direction from the same point as the arbitrary point 27 at right angles to the side surface 16a of the pocket in contact with the rotating body, and the arbitrary point 27 on the contact line 26 is the speed a of the rotating plate 9. The speed b of the rotating body 15 is the speed in the direction of moving from the same point at right angles to the contact line 26 toward the side surface 16a on the side of the pocket in contact with the rotating body, and the speed obtained by subtracting the speed b from the speed a is the rotation speed. The rotational plate 9 has a speed C with respect to the body 15, and the direction of the speed C of the rotational plate with respect to the rotational body is directed outward, so the rotational body 15 is moved around the front half of the holding member 10. In position, it moves outward and contacts the inner surface of the casing 20.

Further, since the rotary plate 9 rotates in the opposite direction to the holding member 10 and the side surface 16a of the pocket on the counter-rotation direction side is a magnet, the rotating body 15 comes into contact with the side surface 16a of the pocket on the counter-rotation direction side. .

The rotating body 15 moves toward the inspection device 25 along the inner surface of the casing 20, and when it comes to a position where it is exposed to the light from the light source 25a125c, the rotation of the holding member 10 is stopped, and the rotating body 15 moves along the inner surface of the seasoning 20. and the side surface 1 on the counter-rotational side of the pocket
The rotating body 15 rotates at least once while contacting the rotating body 6a.
The light hitting the outer diameter surface of the rotating body 15 is reflected and sent to the light receiver 25b, and the condition of the outer diameter surface such as scratches, roughness, black scale, rust, and polishing width is inspected. It is reflected and sent to another receiver, and the end surface is inspected for scratches, roughness, black scale, rust, and polished width.

When the holding member 10 is rotated intermittently in this way, the rotating body 15
Since the holding member 10 remains stopped during the inspection, the rotating body 15 can be inspected more reliably.

When the inspection of the rotating body 15 is completed, the rotating body 15 moves toward the discharge sorting device 22.

The rotation center of the rotary plate 9 is eccentric to the supply device 21 side with respect to the rotation center of the holding member 10.
The rotating body 15 is in contact with the bottom surface 16b of the pocket 16 at a position on the rear half circumference, that is, on the discharge sorting device 22 side.

If the center of rotation of the rotary plate 9 is eccentric to the center of rotation of the holding member 10 in this way, the rotary body 15 is brought into contact with the inner surface of the casing 20 during inspection of the rotary body 15, and both rotary bodies are always kept at a constant position. During discharge sorting, the rotating body 15 can be brought into contact with the bottom surface 16b of the pocket to prevent the rotating body 15 from falling naturally to the outside.

When the rotary body 15 comes to the discharge sorting device 22, a detection signal from the inspection device 25 indicates that the defective product is removed from the container 23 by air blown from the rotary body discharge air pipe 22a.
Good products hit the discharge plate 22b and are discharged into the container 24.

FIG. 4 shows another embodiment of the present invention, in which the supply device 21
is disposed at the rear right side, and in front of this supply device 21 is disposed an air pipe 28 for cleaning the rotary body, and in front of the air pipe 28 for cleaning the rotary body is a rotary body similar to the first embodiment. Inspection device 2 5 a for inspecting the condition of the outer diameter surface of No. 15
12 5 b and an inspection device 25 for inspecting the end face of the rotating body 15
c are arranged, and these inspection devices 2 5 a, 2 5 b
, 25c, an inspection device 25d for inspecting the outer diameter dimension of the rotating body 15 is disposed.

Therefore, as the inspection device 25, the inspection device 25a. 25b, an inspection device 25c for inspecting the end face of the rotating body 15, and an inspection device 25d for inspecting the outer diameter dimension of the rotating body 15.

The inspection device 25d for inspecting the outer diameter dimension slides between a bracket 25e, an air cylinder 25f fixed to the bracket 25e, and a guide plate 25g integrated with the bracket 25e, as shown in FIG. It includes a slide plate 25i fixed to a piston rod 25h of an air cylinder 25f, and a pair of electric micrometers 25j fixed to the slide plate 25i.

Further, the height of the outer circumferential upper end 10a of the holding member 10 is the height of the rotating body 15.
When the holding member 10, which is located below the center and rotates intermittently, stops, a pair of electric micrometers 25
j is lowered by an air cylinder 25f, and a pair of electric micrometers 25j measure the outer diameter of the rotating body 15 by sandwiching the central part of the rotating body 15 from the left and right sides, and after the measurement is completed, the pair of electric micrometers 25j It is raised by the cylinder 25f.

When the holding member 10 is rotated intermittently in this way, the rotating body 15
Since the holding member 10 remains stationary when measuring the outer diameter of the rotating body 15, it is easy to measure the outer diameter of the rotating body 15 from the left and right sides.

Further, the discharge sorting device 22 is arranged on the left side, and this discharge sorting device 22 has four rotating body discharge air pipes 22c,
22d, 22e and 122f, the forwardmost rotating body discharge air pipe 22G is provided to discharge defective products to the container 29 based on the detection signal from the inspection device 25, and the rear three rotary body discharge air pipes 2 2 d, 2
2 e12 2 f is an inspection device 25d that inspects the outer diameter dimension
The rotary body 15 is provided to discharge good rotating bodies 15 into three containers 30, 31, and 32 according to the outer diameter size based on the detection signal at the .

The other parts of the illustrated embodiment are constructed almost the same as the first embodiment.

In addition, in the embodiment shown in FIGS. 1 to 5, the rotating body 15
Although a roller is used as the rotating body 15, a ring or the like may be used as the rotating body 15. Also, although the rotating direction of the rotating plate 9 is reversed to the rotating direction of the holding member 10, it is possible to rotate the rotating plate 9 in the same rotation direction as the holding member 10. In addition, the rotation speed may be faster than that of the holding member 10.

In this case, it is preferable that the side surface of the pocket that is in contact with the rotating body, that is, the side surface of the pocket on the rotational direction side, is a magnet.

Further, the rotation center of the rotary plate 9 may be made concentric with the rotation center of the holding member 10 instead of being eccentric with respect to the rotation center of the holding member 10.

In this case, as shown in FIG. 6, a straight line 28 extending from an arbitrary point 27 on the contact line 26 between the rotary plate 9 and the rotating body 15 toward the center of rotation of the rotary plate 9 and a line 28 on the contact line 26 The angle α between an arbitrary point 27 and a straight line b that runs from the same point 27 at right angles to the contact line 26 toward the side surface 16a of the pocket in contact with the rotating body is an acute angle.
5 is in contact with the inner surface of the casing 20, or as shown in FIG. The angle α between the straight line 28 and the straight line b that runs from the same point 27 as any point 27 on the contact line 26 at right angles to the contact line 26 toward the side surface 16a of the pocket in contact with the rotating body is an obtuse angle. , the rotating body 15 is always placed on the bottom surface 16b of the pocket.
It is preferable that each rotating body 15 be inspected at a constant position.

Furthermore, the rotation of the holding member 10 may be continuous rotation instead of intermittent rotation.

Furthermore, the permanent magnet on the side surface 16a of the pocket that is in contact with the rotating body may be made of magnetic synthetic resin instead of the magnetic rubber 17, and the side surface 16a of the pocket that is in contact with the rotating body may be made of a permanent magnet made of metal. A permanent magnet may be made of a magnet and thin rubber provided by coating or gluing the surface of the pocket 16 side of the permanent magnet made of metal, and the side surface 16a of the pocket that contacts the rotating body may be made of a permanent magnet made of metal. A permanent magnet made of a magnet and a thin synthetic resin provided on the surface of the metal permanent magnet on the pocket 16 side may be used.

If the side surface 16a of the pocket on the side in contact with the rotating body is made of a magnet, the rotating body 15 will be in close contact with the side surface 16a of the pocket on the side in contact with the rotating body, so that the holding member 10 will rotate intermittently.
Even if the rotating body 15 disposed in the pocket 16 is stopped and an inertial force acts on the side surface 16c of the pocket on the side where the rotating body does not touch, the rotating body 1 is defeated by this inertial force.
5 does not move, and the rotating body 15 can be inspected at a fixed position.

Note that if the side surface 16a of the pocket that contacts the rotating body is a magnet, the rotating body 15
It is effective for testing in a stable state.

Furthermore, if the side surface 16a of the pocket that contacts the rotating body is made of a permanent magnet, the structure can be made simpler and the size smaller than when the side surface 16a of the pocket that contacts the rotating body is magnetized by an electromagnet.

Furthermore, if the side surface 16a of the pocket that contacts the rotating body is made of rubber or synthetic resin, wear particles will be extremely reduced and the operation of the rotating body 15 will be stabilized.

Furthermore, the permanent magnet on the upper surface of the rotary plate 9 is
A magnetic synthetic resin may be used instead of a, and a permanent magnet made of a metal permanent magnet and a thin rubber provided by covering or gluing the top surface of the rotating plate 9 on the top surface of the metal permanent magnet may also be used. The upper surface of the rotary plate 9 may be a permanent magnet made of a metal permanent magnet and a thin synthetic resin provided on the upper surface of the metal permanent magnet, or the upper surface of the rotary plate 9 may be made of rubber. The upper surface of the rotary plate 9 may be magnetized by providing a magnet such as an electromagnet below the plate 9, or the upper surface of the rotary plate 9 may be made of synthetic resin and a magnet may be provided below the rotary plate 9. The upper surface of the rotating plate 9 may be magnetized, and by making the upper surface of the rotating plate 9 magnetic and providing a magnet below the rotating plate 9, the rotating plate 9 can be magnetized.
The upper surface may be magnetized.

If the rotating body 15 and the rotating plate 9 are brought into contact with each other only by the weight of the rotating body 15 and the rotating plate 9 is rotated, the rotating body 15 will not rotate smoothly when the weight of the rotating body 15 is small.
When the upper surface of the rotary plate 9 is magnetized in this manner, the rotary body 15 comes into close contact with the rotary plate 9 and rotates smoothly even if the weight of the rotary body 15 is small.

Note that if the upper surface of the rotary plate 9 is made of a permanent magnet, the structure can be made simpler and the size can be made smaller than if the top surface of the rotary plate 9 is magnetized by an electromagnet.

Furthermore, if the upper surface of the rotating plate 9 is made of rubber or synthetic resin, wear particles will be extremely reduced and the operation of the rotating body 15 will be more stable.

Further, as the inspection device 25, only the inspection device 25a125b for inspecting the condition of the outer diameter surface of the rotating body 15 may be provided, or only the inspection device 25c for inspecting the end surface of the rotating body 15 may be provided. Only the inspection device 25d for inspecting the diameter size may be provided.

In addition, when the inspection device 25 is provided with an inspection device 25a125b for inspecting the state of the outer diameter surface of the rotating body 15 and an inspection device 25c for inspecting the end surface of the rotating body 15, the outer diameter surface of the same rotating body 15 is used as shown in the figure. Although the condition of the rotating body 15 and the end surface may be inspected at the same time, the inspection device 25 that inspects the condition of the outer diameter surface of the rotating body 15
Inspection device 25C for inspecting a, 25b and the end face of the rotating body 15
and may be provided at different positions, and a time difference may be provided between inspecting the condition of the outer diameter surface and inspecting the end surface of the same rotating body 15.

Furthermore, without sorting and discharging the rotating bodies 15 on the rotating plate 9, the rotating bodies 15 are moved from the rotating plate 9 to a location other than the rotating plate 9, for example, to the outside of the rotating plate 9. It is also possible to perform sorting by good and defective products and by outer diameter size.

Further, by providing a slight gap between the casing 20 and the rotating plate 9, and sandwiching the rotating body 15 from above and below between the casing 20 and the rotating plate 9 with a pair of electric micrometers, the outer diameter of the rotating body 15 can be measured. It may be inspected.

Furthermore, air pipes 22a, 22C, 22 for discharging rotary bodies
d, 22e, and 22f, the rotating body 15 may be mechanically ejected using an air cylinder or the like.

Further, instead of cleaning the rotor 15 with the rotor cleaning air pipe 28, the rotor 15 may be cleaned with a brush, a roll with a cloth wrapped around the outer periphery, or the like.

By providing a cleaning device before inspecting the rotating body 15 in this manner, good products will not be rejected as defective products and the operation of the rotating body 15 will improve.

According to the inspection device for a rotating body of the present invention, since the supply device, the inspection device, and the discharge sorting device are provided at different locations, there is sufficient space, and both the condition of the outer diameter surface and the end surface of the rotating body can be checked. It is possible to inspect the outer diameter of the rotating body, clean the rotating body before inspection, and sort the rotating bodies into good and defective items on the rotary plate, sort them by outer diameter size, and discharge them. It is also possible to go there.

In addition, since there is a certain amount of time between the feeding of the rotating body from the supply device to the rotating plate and the inspection of the rotating body, the operation of the rotating body becomes stable during that time, and the inspection of one rotating body is completed before the next one. The time it takes to complete the inspection of a rotating body does not include the time for the rotating body to stabilize on the rotating plate to the extent that it does not interfere with the inspection, and does not include the time required for the rotating body to stabilize on the rotating plate to the extent that it does not interfere with the inspection. The time required to complete the inspection of the rotating body does not include the time for feeding the rotating body onto the rotary plate and the time for ejecting and sorting the rotating body, and does not include the time required to complete the inspection of the rotating body. Since it is sufficient to inspect the rotating body as it is, the number of inspections of the rotating body per unit time increases significantly.

Furthermore, since the rotating body draws a circular orbit around the center of rotation of the holding member, the movement of the rotating body is natural, and the operation of the rotating body is stable, ensuring reliable inspection and eliminating transportation troubles.

Furthermore, since the structure is simple, the cost is low, and the holding member and rotating plate can be easily replaced.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a partially cutaway plan view of a rotating body inspection device showing an embodiment of the present invention, and Fig. 2 is a cross-sectional view of Fig. 3 is an explanatory diagram showing the operating principle of the rotating body when the rotation center of the rotating plate is eccentric with respect to the rotation center of the holding member, and Fig. 4 is a rotating body inspection device showing another embodiment of the present invention. A plan view showing a part of the cross section, FIG.
- A cross-sectional view with a part of Y omitted, and FIGS. 6 and 7 are explanatory diagrams showing the principle of operation of the rotating body depending on the shape of the pocket when the rotation center of the rotating plate and the rotation center of the holding member are concentric. It is. In the figure, 9 is a rotating plate, 10 is a holding member, 15 is a rotating body, 1
6 is a pocket, 16a is a side surface of the pocket that is in contact with the rotating body, 21 is a supply device, 22 is a discharge sorting device, and 25 is an inspection device.

Claims (1)

[Scope of Claims] 1. A holding member 10 having a required number of pockets 16 arranged at equal intervals on its outer periphery and rotating, and a holding member 10 located below the holding member 10 and in the opposite direction to the holding member 10 or in the opposite direction to the holding member 10.
A rotating plate 9 that rotates in the same direction as the holding member 10 at a faster rotation speed, a supply device 21 that supplies the rotating bodies 15 to the pockets 16, and a discharge sorting device 22 that discharges and sorts the inspected rotating bodies 15. An inspection device 25 for inspecting the rotating body 15 is provided between the supply device 21 and the discharge sorting device 22, and the outer diameter surface of the rotating body 15 is in contact with the rotating plate 9 and the side surface 16a of the pocket on the side where the rotating body contacts. , the rotating body 15 is rotated by a rotary plate 9, and the rotating body 15 is rotated by a holding member 10 around the center of rotation of the holding member 10. 2. The rotating body inspection device according to claim 1, wherein the rotation center of the rotary plate 9 is eccentric with respect to the rotation center of the holding member 10. 3 A straight line 2 in which the center of rotation of the rotary plate 9 is concentric with the center of rotation of the holding member 10 and proceeds from an arbitrary point 27 on the contact line 26 between the rotary plate 9 and the rotating body 15 toward the center of rotation of the rotary plate 9.
8 and a point 27 that is the same as any point 27 on the contact line 26
2. The apparatus for inspecting a rotating body according to claim 1, wherein the angle .alpha. between the contact line 26 and a straight line b extending perpendicularly toward the side surface 16a of the pocket in contact with the rotating body is an acute angle. 4. A straight line 2 in which the center of rotation of the rotary plate 9 is concentric with the center of rotation of the holding member 10 and proceeds from an arbitrary point 27 on the contact line 26 between the rotary plate 9 and the rotating body 15 toward the center of rotation of the rotary plate 9.
8 and a point 27 that is the same as any point 27 on the contact line 26
2. The apparatus for inspecting a rotating body according to claim 1, wherein the angle .alpha. between the contact line 26 and a straight line b extending perpendicularly toward the side surface 16a of the pocket in contact with the rotating body is an obtuse angle. 5. The rotating body inspection device according to claim 1, wherein the rotation of the holding member 10 is intermittent rotation. 6. The rotating body inspection device according to claim 1, wherein the rotation of the holding member 10 is continuous rotation. 7. The rotating body inspection device according to claim 1, wherein the side surface 16a of the pocket on the side in contact with the rotating body is a magnet. 8. The rotating body inspection device according to claim 7, wherein the magnet is a permanent magnet. 9. The rotating body inspection device according to claim 8, wherein the permanent magnet is magnetic rubber 17. 10. The rotating body inspection device according to claim 8, wherein the permanent magnet is made of magnetic synthetic resin. 11. The rotating body inspection device according to claim 8, wherein the permanent magnet comprises a metal permanent magnet and a thin rubber provided on the surface of the metal permanent magnet on the pocket 16 side. 9. The rotating body inspection device according to claim 8, wherein the permanent magnet 12 is made of a metal permanent magnet and a thin synthetic resin provided on the surface of the metal permanent magnet on the pocket 16 side. 13. The rotating body inspection device according to claim 1, wherein the upper surface of the rotating plate 9 is magnetic. 14. The rotating body inspection device according to claim 13, wherein the upper surface of the rotating plate 9 is a permanent magnet, and the upper surface of the rotating plate 9 is magnetized by the permanent magnet. 15. The rotating body inspection device according to claim 14, wherein the permanent magnet is magnetic rubber 9a. 16. The rotating body inspection device according to claim 14, wherein the permanent magnet is made of magnetic synthetic resin. 17. The rotating body inspection device according to claim 14, wherein the permanent magnet is composed of a metal permanent magnet and a thin rubber provided on the upper surface of the metal permanent magnet. 18. The rotating body inspection device according to claim 14, wherein the permanent magnet is made of a metal permanent magnet and a thin synthetic resin provided on the upper surface of the metal permanent magnet. 19. The rotating body inspection device according to claim 13, wherein the upper surface of the rotary plate 9 is made of rubber, and the upper surface of the rotary plate 9 is magnetized by a magnet provided below the rotary plate 9. 20. The rotating body inspection device according to claim 13, wherein the upper surface of the rotary plate 9 is made of synthetic resin, and the upper surface of the rotary plate 9 is magnetized by a magnet provided below the rotary plate 9. 21. The rotating body inspection device according to claim 13, wherein the upper surface of the rotary plate 9 is a magnetic material, and the upper surface of the rotary plate 9 is magnetized by a magnet provided below the rotary plate 9. 2. The rotating body inspection device according to claim 1, wherein the inspection device 25 is a testing device 25a, 25b for inspecting the condition of the outer diameter surface of the rotating body 15. 23 Inspection device 2 in which the inspection device 25 inspects the end face of the rotating body 15
5c. The rotating body inspection device according to claim 1. 2. The rotating body inspection device according to claim 1, wherein the 24 inspection device 25 is an inspection device 25d for inspecting the outer diameter dimension of the rotating body 15. 25 The inspection device 25 is constituted by inspection devices 25a and 25b for inspecting the condition of the outer diameter surface of the rotating body 15, and an inspection device 25c for inspecting the end surface of the rotating body 15. Inspection device for rotating bodies. 26. The rotating body inspection device according to claim 25, which simultaneously inspects the condition of the outer diameter surface and the end face of the same rotating body 15. 27. The rotating body inspection device according to claim 25, wherein there is a time difference between inspecting the condition of the outer diameter surface of the same rotating body 15 and inspecting the end face. 28 inspection device 25a for inspecting the condition of the outer diameter surface of the rotating body 15; 25b, an inspection device 25c for inspecting the end face of the rotation body 15, and an inspection device 25d for inspecting the outer diameter dimension of the rotation body 15. 29. The rotating body inspection device according to claim 1, wherein the rotating bodies 15 are sorted and discharged on a rotating plate 9. The rotating body inspection device according to claim 1, wherein the rotating bodies 15 are discharged from above the rotating plate 9 and the rotating bodies 15 are sorted at a location other than the rotating plate 9.