JPH0473726B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an inspection and sorting device that performs desired inspection and sorting while conveying headed parts such as screws and rivets in an aligned state. .

[Conventional technology]

Conventionally, various devices have been developed for automatically inspecting headed parts such as screws and rivets while conveying them in a predetermined posture. For example, JP-A-55-174983 (Conventional Example 1) and JP-A-55-174983 (Conventional Example 1)
Publication No. 113906 (Conventional Example 2) or Japanese Unexamined Patent Application Publication No. 1987-
As shown in Publication No. 70702 (Conventional Example 3) and Japanese Unexamined Patent Publication No. 70704/1983 (Conventional Example 4), the head of the object to be inspected (headed part) is inserted into the groove or notch of the support. There is known an apparatus that optically inspects an object while transporting it in a suspended state by hooking the object to an object.

In other words, in the case of Conventional Examples 1 and 2, a large number of notches are provided on the outer periphery of the disk, and the object to be inspected is rotated with the head of the object to be inspected hooked to the notches. The object to be inspected is sent in the circumferential direction of the disk. During the transportation, a desired inspection is performed using an optical sensor.

On the other hand, in the case of Conventional Examples 3 and 4, a pair of parallel members is provided, and by hooking the head of the object to be inspected on the upper surface side of the parallel members, the object to be inspected is moved in the longitudinal direction of the parallel members. While an object is being transported, desired inspections are now performed using optical sensors while the object is being transported.

[Problem that the invention seeks to solve]

As in Conventional Example 1 and Conventional Example 2 described above, in devices in which a plurality of notches are provided on the outermost surface of a rotating disk, in order to correctly insert the object to be inspected into the notches, the rotating disk is A non-rotating guide plate is required at a position facing the outer peripheral surface. However, when such a structure is adopted, the object to be inspected may be caught in the gap between the disk and the guide plate when the object to be inspected is inserted into the notch. If the object to be inspected gets caught in a part of the apparatus, it not only damages the object but also causes problems such as the apparatus stopping.

Moreover, when inspecting an object to be inspected optically, the outline of the area just below the head of the object to be inspected (below the neck) is locally obstructed by the thickness of the disk. It is difficult to completely detect the entire length of the

On the other hand, in devices such as Conventional Examples 3 and 4, in which the object to be inspected is transported and inspected while sliding on the upper surface of a parallel material, the parallel material is tilted so that the downstream side of the material is lowered, or vibrations are suppressed. The object to be inspected must be moved toward the downstream side of the conveyance. For this reason, it is very difficult to control the objects to be inspected so that they are completely separated one by one and moved at a constant speed, and there are also problems in that the throughput is poor.

Moreover, in the case of these conventional examples 3 and 4, when inspecting the object to be inspected optically, the outline of the object directly under the head (below the neck) is locally obstructed by an amount equivalent to the thickness of the parallel material. Therefore, it was difficult to completely detect the entire length of the shaft from below the neck.

[Means for solving problems]

In order to solve the above problems, the present invention provides an inspection and selection device having the following configuration. The object to be inspected by the apparatus of the present invention is a headed component that includes a shaft and a head having an outer diameter larger than the outer diameter of the shaft.

The present invention includes a conveyance device for conveying a headed component as an object to be inspected, an inspection section that inspects the object carried to a predetermined position by this conveyance device, and a The present invention is applied to an inspection and sorting device for headed parts, which is equipped with a sorting section that sorts inspected objects into acceptable products and rejected products.

In the present invention, the conveyance device includes an inner table that is ring-shaped, rotates in a fixed direction, and is arranged in a nearly horizontal position;
an outer table that is ring-shaped and has an inner diameter larger than the outer diameter of the inner table, is arranged on the outer circumferential side of the inner table, and has an inner circumference that contacts or is close to the outer circumference of the inner table; drive means for rotating the outer table in the same direction as the inner table at a rotational speed such that the rotational peripheral speed of the inner peripheral portion matches the rotational peripheral speed of the outer peripheral portion of the inner table, and the driving means rotates the outer table in the same direction as the inner table. On the side, a plurality of grooves along the radial direction are provided radially at equal pitches, and the width of the grooves is wider than the outer diameter of the shaft of the object to be inspected, but wider than the outer diameter of the head. The outer table has a narrow dimension, and the outer table is inclined vertically with respect to the inner table, and the upper surface side of the outer table has a first conveying surface located near its outer periphery, and a first conveying surface located near the outer periphery thereof; A second conveying surface is provided which is located on the inner circumferential side of the first conveying surface and is inclined so as to descend toward the center. A plurality of continuous grooves are provided radially at equal pitches between the conveyance surface and the second conveyance surface, and the width of the grooves is approximately equal to the width of the groove of the inner table, and It is provided at a pitch that corresponds to the groove.

Further, the inspection section is provided with a camera installed on the outer peripheral side of the inner table, and a floodlight that is installed inside the inner table and sends a beam in the length direction of the groove toward the camera. At the same time, an arithmetic processing unit is connected to the inspection unit that determines whether the inspected object detected by the camera is an acceptable item or a rejected item by comparing it with pre-input reference data. .

The sorting section includes an air nozzle that blows air onto the rejected product to discharge it to a collection means for rejected products when the rejected product is transported to a predetermined position, and an air nozzle that discharges the rejected product to a collection means for rejected products. A collecting means is provided for collecting the accepted product after it has been transported to a predetermined position.

[Effect]

In the apparatus of the present invention having the above configuration, the headed component as the object to be inspected is supplied onto the first conveyance surface of the outer table through a chute or the like.
As the shaft of the object to be inspected enters the groove of the outer table, the object to be inspected is supported on the first conveyance surface in a so-called hanging posture with its head facing upward, and rotates in a circular motion as the outer table rotates. Move in the circumferential direction. Since the outer table is inclined, as the outer table rotates, the object to be inspected gradually slides from the first conveyance surface toward the second conveyance surface, and finally reaches the innermost circumferential side of the outer table. Move up to. Further, as the outer table rotates, the object to be inspected is carried to a connection point with the inner table, that is, a position where the inner circumferential portion of the outer table and the outer circumferential portion of the inner table are in contact with or close to each other.

Since the outer periphery of the inner table and the inner periphery of the outer table rotate at circumferential speeds that are related to each other, the object to be inspected on the inner periphery of the outer table is exposed to air at the connection with the inner table. It enters the groove of the inner table with the aid of suitable means for promoting migration, such as blowing. The object to be inspected thus transferred to the inner table is carried to the inspection section as the inner table rotates.

In the inspection section, a beam is sent out from a projector provided inside the inner table toward the camera, and the outline of the object to be inspected is projected onto the camera.
Then, the arithmetic processing unit determines whether the object to be inspected is an acceptable product or a rejected product.

Inspection objects that are determined to be rejected are discharged to a collection means for rejected items by air jetted from an air nozzle in the sorting section. On the other hand, the inspected object determined to be an acceptable item is taken out to a recovery means for acceptable items by an appropriate discharge means such as air jetted from an air nozzle.

〔Example〕

FIG. 1 schematically shows an inspection and selection device 1 used for inspecting screws. This inspection and sorting device 1 includes a vibrating parts feeder 2 that accommodates a large number of screws A to be inspected, and an outlet side of this parts feeder 2.
A head selection mechanism 3 for selecting the outer diameter of the head _A1 of the screw A is provided.

The head sorting mechanism 3 has two parts arranged parallel to each other.
It is equipped with rotating bodies 4 and 5 of books. A gap is provided between these rotating bodies 4 and 5, which is wide enough to allow the shaft portion _A2 of the screw A to be inserted therethrough. Rotating body 4,
5, the downstream side of the conveyance is lower than the upstream side of the conveyance. The upper surfaces of the rotating bodies 4 and 5 are driven to rotate relative to each other, while the screw A is conveyed downstream. A passed product ejecting section 6 is provided in the longitudinally intermediate portion of the rotors 4 and 5, and the outer diameter of the rotors 4 and 5 is reduced.

The screw A, which moves downward while sliding on the rotating bodies 4 and 5, falls from the accepted product discharge section 6 onto the chute 7 if the outer diameter of its head _A1 is a predetermined size. Screws whose outer diameter of head _A1 is less than the specified size are
After falling onto the chute 8 in front of the accepted product discharge section 6, it enters the rejected product collection box 9. A chute 10 is also provided at the end of the rotating bodies 4 and 5. head
_A screw with an outer diameter larger than the specified size should be attached to the rotating body 4,
5 falls onto the chute 10 and enters the rejected product collection box 11.

A conveyance device 15 is provided at the conveyance end side of the chute 7 for accepted products. This conveyance device 15
is equipped with an inner table 16 and an outer table 17. These tables 16,1
7 is made of metal. However, it may be made of synthetic resin.

The inner table 16 is ring-shaped and has a third
As shown in the figure, it is fixed to the upper surface of a cylindrical rotating body 18 so as to be in a substantially horizontal position. However, this inner table 16 may be inclined to some extent as long as the angle is such that the screw A supported on the upper surface thereof does not slip off. The rotating body 18 is rotatably supported by a cylindrical support body 20 via a bearing 19. Support 2
Driving means 22 (only a portion of which is shown) is provided on the side of 0 for continuously rotating the rotating body 18 in the clockwise direction in FIG. 2 at a constant rotational speed. The driving means 22 of this embodiment is a toothed belt 2
3 and sprocket 24, the rotating body 18 and inner table 16 are rotated. The rotational speed of the inner table 16 is set so that the screw A does not fly out due to centrifugal force.

As shown in FIG. 4, the inner table 1
A large number of grooves 26 along the radial direction are provided radially at equal pitches on the upper surface side of the groove 6. Groove 26
The width W1 is wider than the outer diameter of the screw shaft _A2 , but
The dimensions are narrower than the outer diameter of the head _A1 . Groove 2
The depth of 6 is sufficiently deeper than the entire length of screw A.

On the other hand, the outer table 17 also has a ring shape, but its inner diameter is larger than the outer diameter of the inner table 16. The outer table 17 is disposed on the outer peripheral side of the inner table 16, and is in contact with or close to the outer peripheral portion of the inner table 16 on the inner peripheral surface of the outer table 17. This part is called a connection part 27 between the inner table 16 and the outer table 17.

The outer table 17 is vertically inclined with respect to the inner table 16 so that the connecting portion 27 is the lowest. Although the inclination angle is not limited to a specific value, as illustrated in FIG.
is set at an angle such that the connecting portion 27 is approximately horizontal, for example, about 30° to 45°.

On the upper surface of the outer table 17, a first conveying surface 30 located closer to the outer periphery and a second conveying surface 3 located closer to the inner periphery than the first conveying surface 30 are provided.
1 is provided. The second conveyance surface 31 is inclined to become lower toward the center of the outer table 17. Further, as shown in FIG. 6, on the upper surface side of the outer table 17, a large number of grooves 33 along the radial direction are provided radially at equal pitches. This groove 33 is formed on the first conveyance surface 3
0 to the second conveyance surface 31.

Like the groove 26 of the inner table 16, the width W2 of the groove 33 is wider than the outer diameter of the shaft portion _A2 of the screw, but narrower than the outer diameter of the head _A1 . Moreover, this groove 3
3 are provided at a pitch corresponding to the groove 26 of the inner table 16. The depth of the groove 33 is the same as that of the screw A.
The depth is sufficiently deeper than the total length of the As shown in FIG. 7 or 9, the first conveying surface 3
0 is provided with an upwardly convex, pointed mountain-like portion 34 located between each groove 33, and the shaft portion _A2 of the screw A resting on this mountain-like portion 34 is inserted into the groove 33. It's easy to get into.

The outer table 17 is rotated by a drive means 36. This driving means 36 includes a ring-shaped rotating body 37 located below the outer table 17, and the outer table 17 is attached to this rotating body 37. This rotating body 37
is a ring-shaped support 3 via a bearing 38
9 is rotatably supported. This rotating body 37
is continuously rotated in the same direction as the inner table 16 (clockwise in FIG. 2) by a motor and sprocket (not shown) via a toothed belt 40 (only a portion of which is shown).

The rotational speed of the outer table 17 is such that the peripheral speed of its inner peripheral surface matches the peripheral speed of the outer peripheral surface of the inner table 16. Moreover, the connection part 2 between the inner table 16 and the outer table 17
7, both grooves 26 and 33 are synchronized so as to match each other.

Outer table 1 tilted as described above
An outer guide plate 42 is provided on the lower side of the outer table 17 at a position facing the outer peripheral surface of the outer table 17 . This guide plate 42 is the outer table 17
It is curved in an arc shape along the outer peripheral surface of the support body 39, and is fixed to the support body 39 side by a frame (not shown). The outer guide plate 42 is provided with a discharge port 43 near the lowest position. This outlet 4
3 is provided with a chute 44. A box 45 is provided at the outlet of the chute 44 for collecting the discharged screws.

An inner guide plate 48 is provided on the higher side of the inclined outer table 17 at a position facing the inner peripheral surface of the outer table 17. This guide plate 48 is curved in an arc shape along the inner peripheral surface of the outer table 17, and is fixed to the support body 39 side by a frame (not shown). A discharge port 49 is provided at a longitudinally intermediate portion of the inner guide plate 48 . This discharge port 49 has a chute 5.
0 is set. Further, an air nozzle 51 is provided behind the discharge port 49.

As shown in FIG. 1 or 2, a baffle plate 53 is arranged at a position facing the outlet of the chute 7. This baffle plate 53 is connected to the inner guide plate 48
installed on. An air nozzle 54 is provided opposite the baffle plate 53. Further, an air nozzle 55 is also provided near the connecting portion 27 between the inner table 16 and the outer table 17. This air nozzle 55 is connected to the connecting portion 27
Air is ejected towards the upper screw A. A stopper 56 is arranged on the inner table 16 at a position facing the air nozzle 55. This stopper 56 has one screw A.
The movement of the head A ₁ of the screw is restricted so that the head A ₁ of the screw can be moved by one screw so that the books can be transferred from the outer table 17 to the inner table 16 one by one.

Further, an alignment guide 58 is located closer to the rotational direction of the inner table 16 than the connecting portion 27.
(See Figure 2) are arranged. The alignment guide 58 has an arcuate inner surface that slides into contact with the outer peripheral surface of the inner table 16 . Further, an air nozzle 59 is provided opposite the alignment guide 58. Each of the air nozzles 51, 54, 5 mentioned above
5 and 59 are connected to a compressed air supply source via a solenoid valve (not shown). In addition, the alignment guide 58
A chute 60 for collecting screws that have fallen from between the inner table 16 and the outer table 17 is provided below the front side in the conveyance direction.

An inspection section 62 is provided in the middle of the inner table 16 in the circumferential direction. This inspection section 62 includes a light projector 63.
The light emitted from the is illuminated. The projector 63 is arranged inside the inner table 16 and directs the inspection beam along the groove 26 to the inner table 16.
It is sent out from the inner circumferential side toward the outer circumferential side. A camera 64 that receives the beam is provided on the outer circumferential side of the inner table 16. This camera 64
has a built-in one-dimensional line sensor (not shown) for measuring the contour of the screw A. camera 64
is connected to an arithmetic processing device 65 using a microcomputer or the like. This arithmetic processing device 65
processes various data related to screw A detected by camera 64 according to pre-programmed processing procedures, compares it with pre-input reference data, and determines whether screw A passes or fails. Make a judgment as to whether this is the case.

A sorting section 67 is provided downstream of the inspection section 62 in the transport direction. The sorting section 67 includes an air nozzle 68 that blows air toward the screw A' that has been determined to be rejected by the inspection section 62 when it is brought to a predetermined position; The screw A is provided with an air nozzle 69 that blows air toward the screw A when the screw A is brought to a predetermined position. These air nozzles 6
8, 69 are also connected to a compressed air supply via a solenoid valve (not shown). An appropriate collecting means 71 such as a chute or a box for collecting rejected products is provided below the position facing the air nozzle 68 for rejected products. An appropriate collecting means 72 such as a chute or a box for collecting the passed products is provided below the position facing the air nozzle 69 for the passed products.

Next, the operation of the inspection and selection apparatus 1 having the above configuration will be explained.

A large number of screws A stored in the parts feeder 2 are supplied between the rotating bodies 4 and 5 of the head sorting mechanism 3, and are sent toward the accepted product discharge section 6 while sliding on the rotating bodies 4 and 5. Those whose outer diameter of the head _A1 is smaller than a predetermined value fall onto the chute 8 before the accepted product discharge section 6. The heads A ₁ having an outer diameter larger than a predetermined value are carried to the ends of the rotating bodies 4 and 5 and fall onto the chute 10 . thus,
Only screws A having a predetermined head diameter fall onto the chute 7 for acceptable products. Screw A sent to chute 7
is supplied to the first conveying surface 30 of the outer table 17.

Air is constantly jetted from the air nozzle 54 toward the baffle plate 53. The air blown onto the baffle plate 53 attempts to climb over the baffle plate 53, causing turbulence near the first conveyance surface 30. Therefore, the screw A that has fallen from the chute 7 onto the first conveying surface 30 exhibits a dancing behavior, and the shaft portion A ₂ finally fits into the groove 33 . That is, as shown in FIG. 9, the shaft portion _A2 enters into the groove 33,
The head _A1 is in a posture caught on the upper wall of the groove 33.

Since the outer table 17 is continuously rotated in the clockwise direction in the figure, the first conveying surface 3
The screw A held at 0 is the outer table 17
is carried in the clockwise direction as shown in the figure. Screws that do not fit into the grooves 33 are rolled out from the outlet 43 located at a lower position and are removed from the chute 44.
It falls on top.

Since the outer table 17 is inclined so that the connecting portion 27 side is lower, as the outer table 17 rotates, the position of the first conveyance surface 30 on which the screw A is mounted gradually rises. Therefore, the screw A, while being fitted in the groove 33, gradually slides toward the second conveyance surface 31, and finally moves to the inner guide plate 48 and stops. Since the air nozzle 51 constantly blows air toward the discharge port 49, the movement from the first conveyance surface 30 to the second conveyance surface 31 is promoted, and the groove 3
The screw A that is not held in the air nozzle 5
With the help of air blowing out from 1, the outlet 49
will be reliably discharged from

When the screw A held on the second conveyance surface 31 as described above is conveyed to the connection part 27 between the inner table 16 and the outer table 17, it is transferred to the inner It enters into the groove 26 of the table 17. Since this connecting portion 27 is provided with a stopper 56 that allows movement by only one screw, one screw A is inserted into each groove 26 as shown in FIG.

Inner table 16 at the connection part 27
The screws A that cannot be transferred to the side remain on the outer table 17, but since a large number of screws A can be stored on the outer table 17, there is a storage function (buffer effect) for the screws A. In addition, when transferring from one groove 33 to the other groove 26, not only the place where the grooves 26, 33 are perfectly aligned with each other (theoretical tangent line), but also the combination of the grooves 26, 33 before and after that. The screw A is also transferable in .

The screw A transferred to the inner table 16 in this manner is carried in the clockwise direction in the figure as the inner table 16 rotates. inner table 1
The screws that cannot be properly transferred to the chute 60 fall from the gap between the inner table 16 and the outer table 17 onto the chute 60.

When the screw A on the inner table 16 reaches the position of the alignment guide 58, the shaft part is moved by the force of the air constantly blown from the air nozzle 59.
A ₁ is pressed against the inner surface of the alignment guide 58 . Therefore, the screw A is suspended near the outer edge of the inner table 16, and is transported to the inspection section 62 while maintaining this posture. In the inspection section 62 , an inspection beam sent out from a light projector 63 is received by a camera 64 . Therefore, the outline of the screw A is detected by the camera 64, and the data is sent to the arithmetic processing unit 65.
The arithmetic processing unit 65 is input with reference data corresponding to the inspection items in advance, and this reference data is compared with the measurement data of the screw A, and the arithmetic processing unit 65 determines whether the product is passed or rejected. be judged accordingly. Inspection items include, for example, the length and outer diameter of the shaft _A2 , the presence or absence of threads, the number of threads, and the shaft.
This includes the shape of the tip of _A2 .

Screws determined to be rejected by the inspection department 62
When A' is brought to a position directly facing the air nozzle 68, it is dropped into the rejecting product collection means 71 by the air instantaneously blown out from the air nozzle 68. On the other hand, the screw A determined to be an acceptable product is transported to a position directly facing the air nozzle 69 and is dropped into the recovery means 72 by the air instantaneously jetted from the air nozzle 69. In order to adjust the air jet timing of the air nozzles 68 and 69, the inner table 16
The rotation angle of the screw A and the position of the groove 26 are constantly detected by an encoder, an optical sensor, etc. (not shown), and the position of the screw A inspected by the inspection section 62 is tracked regardless of whether it passes or fails. ing.

As described above, according to the inspection and sorting device 1 of this embodiment, the screws A randomly supplied onto the outer table 17 via the chute 7 are transferred to the inner table 16 as the outer table 17 rotates.
can be smoothly inserted into the groove 26 while maintaining a predetermined posture. Then, it can be reliably transported to the inspection section 62 and sorting section 67. Moreover, each screw A held on the inner table 16
are sent to the inspection section 62 in a state where they are completely separated from each other at an accurate pitch according to the spacing of the grooves 26, so that the measurement in the inspection section 62 can be performed reliably, and the position of the screw A can be recognized easily. Since it is easy, the screw A can be correctly discharged after measurement.

In addition, in the inspection section 62, the beam from the projector 63 is sent out in the length direction of the groove 26 from the inner circumferential side to the outer circumferential side of the inner table 16. , there is no member other than screw A that blocks the beam. Therefore, the entire length of the shaft portion A ₂ of the screw A suspended in the groove 26 from the bottom of the neck to the tip can be completely inspected.

The inspection and sorting device of the present invention is not limited to screws, and can be similarly applied to any headed component having a shaft and a head having a larger outer diameter than the shaft.

〔Effect of the invention〕

According to the present invention, it is possible to carry out a desired inspection while continuously conveying headed parts as inspection objects at a predetermined speed to an inspection section and a sorting section in an aligned state with their heads facing up. In addition, the number of processes per unit time is large. In addition, a large number of screws can be stored in line on the outer table.
The buffer effect is demonstrated. Then, the objects to be inspected are transported and inspected in a completely separated state, one by one, without the object being inspected being caught in a part of the equipment or the posture of the object being inspected being distorted during transportation. This allows the position of the object to be inspected to be recognized easily and accurately. Therefore, selective discharge of inspected acceptable products and rejected products can be performed accurately. Furthermore, in the inspection section, the beam from the projector is sent out in the length direction of the groove from the inner circumferential side to the outer circumferential side of the inner table. It has great effects, such as being able to completely inspect the entire length of the shaft.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a perspective view of an inspection and sorting device for screws, FIG. 2 is a plan view of the conveyance device in FIG. 1, and FIG. 3 is a sectional view of the conveyance device. , Figure 4 is a plan view of a part of the inner table,
Figure 5 is a cross-sectional view taken along line V-V in Figure 4;
The figure is a plan view of a part of the outer table, Figure 7 is a sectional view taken along the - line in Figure 6, Figure 8 is a perspective view showing the connection between the inner table and the outer table, and Figure 9 is the outer table. It is a front view which expands and shows a part of. A... Screw (headed part), 1... Inspection sorting device, 15... Conveying device, 16... Inner table, 17... Outer table, 22... Drive means, 26... Groove, 30... No. 1 conveyance surface, 31...
... second conveyance surface, 33 ... groove, 36 ... drive means, 62 ... inspection section, 63 ... floodlight, 64 ...
Camera, 65... Arithmetic processing unit, 67... Sorting section, 68, 69... Air nozzle, 71... Collection means for rejected products, 72... Collection means for accepted products.

Claims (1)

[Claims] 1. A transport device for transporting a headed component as an object to be inspected, an inspection section that inspects the object carried to a predetermined position by the transport device, and In the inspection and sorting device for headed parts, which is equipped with a sorting section that sorts the inspected objects into acceptable products and rejected products, the above-mentioned conveying device has a ring shape and is driven to rotate in a fixed direction and horizontally. an inner table arranged in a posture similar to that of the inner table; and an inner table having a ring shape having an inner diameter larger than the outer diameter of the inner table, and arranged on the outer peripheral side of the inner table, and the inner peripheral part contacts the outer peripheral part of the inner table. Or a driving means that rotates the outer table in the same direction as the inner table at a rotational speed such that the rotational peripheral speed of the inner peripheral part of the adjacent outer table matches the rotational peripheral speed of the outer peripheral part of the inner table. A plurality of grooves along the radial direction are provided radially on the upper surface side of the inner table at equal pitches, and the width of the grooves is equal to the outer diameter of the shaft of the object to be inspected. The outer table is wider than the outer diameter of the head but narrower than the outer diameter of the head, and the outer table is inclined vertically with respect to the inner table, and the upper surface of the outer table has a A first conveying surface located at the center, and a second conveying surface located on the inner circumferential side of the first conveying surface and inclined so as to descend toward the center are provided. On the upper surface side of the outer table, a plurality of continuous grooves are provided radially across the first conveyance surface and the second conveyance surface at equal pitches, and the width of the grooves is smaller than that of the inner table. The inspection section is provided with a camera installed on the outer circumferential side of the inner table, and a camera installed on the inside of the inner table and with a pitch that corresponds to the width of the groove on the inner table. A projector is provided that emits a beam in the length direction of the groove toward the camera, and the device detects whether the inspected object detected by the camera is an acceptable product or a rejected product.
An arithmetic processing device is connected that makes a judgment by comparing it with reference data that has been input in advance, and the sorting section is further connected to a processing unit that injects air into the rejected product after it has been transported to a predetermined position. 1. An inspection and sorting device for headed parts, comprising: an air nozzle that discharges air to a collection means for rejected products by spraying air; and a collection means for collecting passed products.