JP3055576B2 - Cylindrical body inspection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cylindrical body inspection apparatus, and more particularly to a cylindrical body inspection apparatus for inspecting a cylindrical body.

[0002]

2. Description of the Related Art Heretofore, there has been no cylindrical body inspection apparatus for automatically inspecting a cylindrical body such as a laminated tube, and if the inspection is to be performed, a human must perform a visual inspection. .

[0003]

However, this method has a problem in that the efficiency of inspection is limited, the speed of the entire process is limited in this inspection process, and complete automation cannot be achieved.

It is an object of the present invention to provide a cylindrical body inspection apparatus capable of automatically and rapidly imaging and inspecting a cylindrical body.

[0005]

In order to solve the above problems, a cylindrical body inspection apparatus according to the present invention comprises: (1) a rotation inspection in which a plurality of cylindrical bodies having a bottom surface at one end are mounted and rotated. Table,
(2) an outer surface inspection means for inspecting the outer surface of the cylindrical body,
(3) determining means for determining whether or not the cylindrical body has an external abnormality based on the inspection value obtained by the external surface inspecting means; and (4) a plurality of circumferential positions of the rotary inspection table. Is provided for each circumferential position to identify the
An angle identification unit that displays the corresponding circumferential position, and the determination information obtained by the determination unit, the angle identification unit that displays the circumferential position on which the cylindrical body that generated the determination information is placed is displayed. It is characterized in that it has an external surface defect identification means provided with a judgment information display means for displaying it in correspondence. In one aspect of the present invention, the outer surface inspection means inspects a position of a position mark formed at a predetermined position of the tubular body, and the determination means determines a displacement of the position mark based on the inspection value. It is characterized in that it is determined that there is an abnormality on the outer surface when it is detected. In another aspect, the tubular body inspection device according to the present invention includes an air cylinder as the determination information display unit, and further includes (5) a proximity switch, wherein the air cylinder includes a head. The head is driven to display the determination information, and the proximity switch is provided to face the head of the air cylinder, and detects and operates the determination information when the head approaches. In an embodiment having a proximity switch,
The angle discriminating section displays a circumferential position corresponding to the angle discriminating section by bit information including a convex portion and a flat portion, and the proximity switch faces the head of the air cylinder. Along with the convex portion and the flat portion of the angle discriminating portion, by detecting the determination information and the bit information corresponding to the determination information, it operates only for a cylindrical body having an outer surface abnormality. Configuration. In a preferred example belonging to an aspect having such a proximity switch, (1) a plurality of inspection stations for mounting the cylindrical body on the same circumference of the rotation surface of the rotation inspection table are provided. (2) the outer surface inspection means is provided at a position where the outer surface of each tubular body placed at each of the inspection stations can be sequentially inspected; and (3) the determination means comprises a cylinder. An NG signal is generated as the determination information when it is determined that the shape has an external surface abnormality. (4) A plate that rotates together with the rotary inspection table is provided below the rotation inspection table, and a plate is provided on the plate. The angle identification unit for displaying the circumferential position of the inspection station on the rotary inspection table by bit information composed of a convex portion and a flat portion, and a tubular body mounted on the inspection station is generated. Size The outer surface defect identification means including an air cylinder as the determination information display means for displaying fixed information is provided for each inspection station, and (5) the proximity switch is provided on the rotary inspection table. The determination information displayed by each of the external surface defect identification means, which is fixed downward and sequentially faces the external surface defect identification means that is rotated to the position of the switch, and the bit information corresponding to the determination information. It is characterized by detecting.

[0006]

The cylindrical body inspection apparatus according to the present invention has a rotary inspection table. The test cylindrical body is placed on the rotation inspection table, and revolves as the rotation inspection table rotates. During this revolution, the outer surface of the tubular body is inspected. The inner surface inspection may be performed in parallel with the outer surface inspection. The outer surface of the tubular body placed on the rotary inspection table is inspected by an outer surface inspection unit (for example, an optical sensor), and the obtained inspection value is transmitted to a determination unit (for example, a micro PC). The determining means determines whether or not there is an abnormality on the outer surface of the tubular body based on the transmitted inspection value. The determination information (OK or NG) obtained by the determination means is transmitted to a determination information display section (for example, an air cylinder) of the external surface defect identification means, and the determination information as to whether or not there is an external surface abnormality can be recognized from the outside. Is displayed. The outer surface defect identification means includes an angle identification unit (for example, a head identification unit) together with the above-described determination information display unit. An angle identification unit is provided for each circumferential position to be identified in order to identify a plurality of circumferential positions of the rotary inspection table, and displays a corresponding circumferential position. Then, in the outer surface defect identification means, the determination information obtained by the determination means is associated with an angle identification unit that displays a circumferential position where the cylindrical body that generated the determination information is mounted, and Displayed by the judgment information display unit. By using such a tubular body inspection apparatus according to the present invention, the outer surface of the tubular body can be inspected and determined automatically at high speed, and the efficiency of the entire production line can be increased. In one aspect of the present invention, the outer surface inspection means inspects a position of a position mark formed at a predetermined position of the tubular body, and the determination means determines a displacement of the position mark based on the inspection value. It may be configured to determine that there is an external abnormality when detecting an error. According to this aspect, it is determined whether or not the position mark formed at the predetermined position is shifted in relation to the display printing on the outer surface of the tubular body. In another aspect of the present invention, the determination information display means may be formed of an air cylinder, and the determination information may be displayed by driving a head of the air cylinder. In this case, a proximity switch can be provided to face the head of the air cylinder, and the determination information can be detected and activated when the head approaches the proximity switch. According to this aspect, the determination information displayed by the head of the air cylinder is transmitted to the outside by the proximity switch and utilized in a downstream process. For example, in response to the operation of the proximity switch, defective cylindrical bodies can be excluded from the production line. In an aspect having a proximity switch, the angle identification unit includes:
The position in the circumferential direction corresponding to the angle discriminating portion is indicated by bit information composed of a convex portion and a flat portion, and the proximity switch faces the head of the air cylinder and has Part and the flat part,
By detecting the determination information and the bit information corresponding to the determination information, it is possible to provide a configuration that operates only on a cylindrical body having an outer surface abnormality. According to this aspect, both the bit information of the angle identification unit corresponding to the mounting position of each tubular body and the determination information of whether there is no abnormality on the outer surface of the tubular body are read by the proximity switch. Can be transmitted to the outside.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a preferred embodiment of the present invention will be described with reference to the drawings. The present embodiment discloses an example in which a cylindrical body to be imaged or inspected according to the present invention is a laminated tube.

FIG. 1 shows a configuration of a tube inspection system using an embodiment of the present invention. The tube inspection system 200 includes a tube insertion unit 1, a tubular body outer surface inspection device (rotary tube inspection machine) 2, a tube take-out unit 3, a transport device 4, and an emergency discharge conveyor 5. I have.

[0009] The tube insertion section 1 includes an accumulating conveyor 6 and
It has a pusher 7 and a tube insertion jig 8. The cylindrical body outer surface inspection apparatus 2 has a rotation inspection table 12, a defective product discharging / star wheel 13, a defective product discharging chute 14, and a defective product pool 15. The tube take-out unit 3 includes stoppers 19 and 21, a tube take-out pick and place 20, a pitch correction jig 22, a box transport conveyor 23, and a box presser 24a,
4b, box stoppers 25a and 25b, a tube accumulation conveyor 26, and a tube box packing device 27. The conveyor 4 includes a conveyor 9, a timing screw 10, a star wheel 11, a star wheel 13 for combined use of a defective product, a joint screw 16, a sorting star wheel 17, a non-defective product conveyor 18, and an empty holder conveyor. 29, an empty holder transport conveyor 30, a merging device 31, and an empty holder transport conveyor 32.

Next, the general operation of the tubular body inspection apparatus will be described. The laminate tube T is transported from the previous step A and is accumulated by the accumulation conveyor 6. Thereafter, a predetermined number of pieces are simultaneously extruded by the pusher 7 and placed on the holder H on the conveyor 9 by the tube insertion jig 8. The laminate tube T is transported by the transport conveyor 9 in the direction of the rotary tube inspection machine 2 while being placed on the holder H. When reaching the vicinity of the cylindrical body outer surface inspection apparatus 2, first, the holders H advance at predetermined intervals by the screw-shaped timing screw 10, and the cylindrical body outer surface inspection apparatus 2 is moved by the star-shaped star wheel 11. On the rotation inspection table 12. The rotation inspection table 12 rotates clockwise in the figure, and inspects the outside of the laminate tube T while rotating. The detailed configuration and operation of the cylindrical body outer surface inspection device 2 will be described later in detail.

If the inspection results in a defective product,
In the star-shaped defective product discharging / combining star wheel 13, only the defective laminate tube T is taken out and discharged upward, leaving only the holder H, and is accumulated in the defective product pool 15 via the defective product discharging chute 14.

The non-defective laminated tube T and the holder H and the defective laminated tube T alone are discharged and left only in the holder H, and are conveyed to the distribution star wheel 17 by the screw-shaped joining screw 16. The sorting star wheel 17 places the non-defective laminate tube T and the holder H on the non-defective product transport conveyor 18 and sorts the empty holder from which the defective laminate tube T is discharged onto the empty holder transport conveyor 30.

The non-defective product laminating tube T and the holder H conveyed by the non-defective product conveyer 18 are conveyed to the tube take-out section 3 by the non-defective product conveyer 18.
In the tube take-out section 3, first, the stopper 21
Next, a predetermined number of the laminated tubes T and the holders H are stopped by the stoppers 19, and only the laminated tubes T are taken out from the non-defective product conveyer 18 by the tube pick-up pick and place 20. Next, these laminated tubes T are connected to the pitch correcting jig 2.
The pitch of the array is corrected by 2, and the tubes are stacked near the tube box packing device 27 by the tube stacking conveyor 26.

On the other hand, a box carrying conveyor 23 is provided below the stacking position of the laminate tubes T, and the empty box E is carried from the preceding step B. Empty box E is box holding device 24
a, 24b and the box stoppers 25a, 25b, and are appropriately transferred to the lower part of the tube box packing device 27.
The tube box packing device 27 packs the laminated laminate tubes T into empty boxes E by a predetermined number. The box that has been packed is transported to the next step C by the box transport conveyor 23.

Tube pick-and-place 20
The holder H from which only the laminate tube T is taken out is conveyed to the merging device 31 by the empty holder conveying conveyor 29. The empty holders sorted by the sorting star wheel 17 are also conveyed to the merging device 31.
The merging device 31 has two timing screws. These empty holders are merged in a line and placed on the empty holder conveyor 32. Empty holder conveyor 3
2 transports the empty holder to the tube insertion section 1 and connects it to the transport conveyor 9.

In this way, the outside and inside of the laminated tube T can be automatically inspected during the manufacturing process of the laminated tube T. Next, a configuration of a tubular body inspection device 2 according to an embodiment of the present invention will be described with reference to the drawings.

The cylindrical body inspection apparatus 2 includes an optical sensor 95,
96 (FIG. 2). The optical sensors 95 and 96 have their sensor portions arranged adjacent to the outer surface of the tube. Then, the position of the tube is determined based on the positions of the optical sensors 95 and 96 and the position mark (register mark) M marked on the outer surface of the tube, and it is determined whether the tube is OK or NG (FIG. 8). On the other hand, the plane of rotation of the rotary inspection table 12 are 12 inspection station E ₁ to E ₁₂ are provided (FIG. 6). The positions of the inspection stations E _{1 to} E ₁₂ are arranged on the same circumference X ₁ by dividing the rotation surface of the rotation inspection table 12 into 12 parts every 30 °.

On the other hand, 12 inspection stations E _{1 to} E ₁
It is pencil type air cylinder 97 corresponding is arranged on the plate 98 which is disposed below the rotary inspection table 12 in ₁₂ (FIG. 3). As shown in FIG. 6, the air cylinder 97CY
_{1 to} CY ₁₂ are the intersections of five concentric circles C ₁ , C ₂ , C ₃ , C ₄ , and C ₅ formed at equal intervals from the center 0 and the straight lines drawn from the center 0 to each inspection station and the concentric circles. Each is arranged on a corresponding plate 98.

Further, a proximity switch 99 is arranged on the lower surface of the rotary inspection table 12 (FIG. 3), and when an abnormality is found on the outer surface of the tube at the inspection stations E _{1 to} E ₁₂ , the air cylinder 97 is closed. The head 100 is raised by air (FIG. 9), and head position information and determination information on the rising head 100 are detected outside by a proximity switch 99 disposed at a predetermined position.

As shown in FIG. 3, the cylindrical body outer surface inspection apparatus 2 comprises a base 35, a motor 36, a rotation shaft 37, a rotation inspection table 12, a cam 46, a cam follower 47, a holder lifter Rotation shaft 48, centering jig 38, in-tube inspection device 39, camera selector 43 (FIG. 5)
, Mixer 44, antenna unit 45, rotary resolver 4
9, a fixed resolver 50, and a light amount checker 51 (FIG. 2)
, A cam positioner 87 (FIG. 5), and a determination device 84 (FIGS. 5 and 10). Here, the motor 36,
The rotation shaft 37 and the rotation inspection table 12 constitute a transfer unit. The in-tube inspection device 39 constitutes an imaging unit. The above constitutes the cylindrical body outer surface imaging device 2. Further, the antenna unit 45 constitutes a signal transfer unit. The discriminating device 84 constitutes discriminating means.

A fixed shaft (not shown) is provided on the base 35, and a tubular rotary shaft 37 is provided so as to share an axis with the fixed shaft and to cover the fixed shaft. The rotating shaft 37 is configured to be driven to rotate by a motor 36. In addition, a rotary resolver 49 and a fixed resolver 50 are provided for measuring the angular position between the fixed axis and the rotary axis. The rotation inspection table 12 is connected to a rotation shaft 37 and rotates with the rotation of the rotation shaft 37. A holder H can be placed on the rotation inspection table 12. The holder H is moved up and down and rotated by a holder elevating rotary shaft 48. The elevating operation of the holder elevating rotary shaft 48 is performed by a cam 46 and a cam follower 47 provided at the lower end of the holder elevating rotary shaft 48. The squeeze port side of the laminate tube T can be inserted into the holder H. A centering jig 38 for holding the tail side of the laminate tube T in a circular shape.
Are supported above the holder H. The in-tube inspection device 39 (FIG. 2) for inspecting the inside of the laminated tube T includes an in-tube insertion section 40 and a borescope 41.
And a CCD camera 42. The borescope 41 includes a borescope main body 52 and a borescope insertion section 5.
3 is included. The tube insertion section 40 includes a borescope insertion section 53, a light emitting diode section 54, and a photo sensor section 55. Of these, the borescope insertion section 53 mainly inspects the inner bottom side of the laminate tube T in the drawing, that is, the squeeze port side, and the light emitting diode section 54 and the photo sensor section 55 mainly inspect the inner side surface of the laminate tube T. The tubular body outer surface inspection device 2 is provided with twelve in-tube inspection devices 39, and is also provided with twelve cam followers 47 and holder elevating rotary shafts. These numbers are not limited to 12, and may be other numbers. Each in-tube inspection device 39 is connected to a camera selector 43 by a lead wire (FIG. 5), and the camera selector 43 is connected to a mixer 44. The mixer 44 is connected to the antenna unit 45. The antenna unit 45 is connected to the determination device 84. That is, in the present embodiment, it is possible to send the determination signal to the outside without using the angle information.

Next, the operation of the tubular body inspection device 2 will be described with reference to FIGS. In FIG. 2, a laminate tube T is placed on a holder H and transported to a star wheel 11 by a transport conveyor 9 or the like. Star wheel 11
Takes the laminate tube T together with the holder H onto the rotary inspection table 12 of the cylindrical body outer surface inspection apparatus 2. After being taken on the rotating rotary inspection table 12, the holder H
Following the cam curve, it rises as the holder elevating rotary shaft 48 moves up and down, and intermittently rotates around the axis of the holder elevating rotary shaft 48 intermittently.

That is, as shown in FIG. 6, the rotation is performed at the inspection position while revolving in the rotation direction of the rotation inspection table 12. At this time, at the points P ₁ , P ₂ , P ₃ , and P _{4 in} the figure, Stops the rotation for a predetermined time. Thus, P ₁ , P
_The image signal is processed while the rotation is stopped for a predetermined time at ₂ , P ₃ and P ₄ . The laminate tube T also rises due to the rise of the holder H, and the in-tube inspection device 39 is placed inside the tube held by the centering jig 38 in a circular shape.
Is inserted into the tube insertion portion 40. At the same time, the optical sensor for the outer surface inspection of the cylindrical body is brought into a state of starting the inspection. Further, in such a state, the laminate tube T intermittently rotates by 90 ° between the points R _{1 to} R ₄ , thereby rotating the 90 ° rotation region during the rotation. (FIG. 6). When the inspection of one tube is completed, the above-mentioned defective wheel for exclusive use of defective product 13 is used.
As a result, the defective laminate tube T is discharged, and the non-defective laminate tube T is conveyed in the direction of the tube take-out section 3. In addition, the insertion portion 40 in the tube has a light amount checker 51 before being inserted into the inside of the laminate tube T.
, The light amount of the light emitting unit is checked, and the result is reflected at the time of data processing. If the light intensity is below the reference value,
An alarm can be issued to replace parts.

Here, the inspection method will be described in more detail with reference to FIG. First, in FIG. 8A, when the registration mark M is written at a predetermined position of the laminate tube, the lower end of the registration mark M is detected by the optical sensor 95, and when the optical sensor 96 does not detect anything, The value is assumed to be a normal value (1, 0). In other cases, it is determined that the registration mark M is shifted, that is, the entire laminate tube is shifted, and the binary data is converted as shown in (b), (c), and (d) of FIG. Is to occur. Referring now to FIG. 6, if it finds the deviation of the registration marks on the outer surface or 4 in the divided every region in the inspection for the inspection period, for example, during the rotation of the region R ₂ in the inspection station E ₁₁ by supplying air to the air cylinder CY ₁₁ when a defect of the registration mark is found, the air cylinder C
Raising the head 100 of the Y _11. Air cylinder CY ₁₁
Head 100 rotates as it is raised.

On the other hand, the circumferences C ₁ , C ₂ ,
C ₃ and C _{4 each} have a head identification unit that displays the circumferential position of the rotation test table 12 with a convex portion and a flat portion. The 12 heads are A, B, C, and D having a 4-bit configuration. Represent,
The determination is made based on E, which is the fifth 1-bit. In the above example of the air cylinder CY _11, A constituting the proximity switch 99, B, C, D, of the E, A, B, bit stand for D and E (see FIG. 9 (a)). This result eliminates the laminate tube.

FIG. 9 (b) is a timing chart for rotating the inspection and performing image processing when the inspection is stopped.
Shown in Next, with reference to FIG. 10, a configuration for performing an outer surface inspection using signals from a pair of optical fiber sensors 1 and 2 will be described.

[0027] First will be described with reference to the above example, the signal from the optical fiber sensor 2 forming the NG in the inspection station E ₁₁ is sent to the micro PC 6, test pulse and the start signal from the Cam Positioner 92 Sent at the same time. The signal from the micro PC 6 is sent to the air cylinder to drive the corresponding air cylinder.

On the other hand, the processing of the inspection information detected by the tube inner inspection device 39 will be described. The image information of the inner bottom surface of the laminate tube T detected by the CCD camera 42 is converted into a video signal,
Inspection information on the inner surface of the laminate tube T detected in 5 is converted into an audio signal, the two are mixed, and transmitted to the outside to determine whether or not there is a defect. FIG. 5 is a block diagram showing the flow of image information processing on the inner bottom surface of the laminate tube T detected by the CCD camera 42.

FIG. 5 is roughly divided into a rotating block 85 and a fixed block 86. The rotating block 85 has 12 Cs.
CD cameras 42a, 42b, 42c, 42d, 42e,
42f, 42g, 42h, 42i, 42j, 42k, 4
2l, the camera selector 43, the mixer 44, the electromagnetic shield cover 72 of the antenna unit 45 and the transmission antenna 74, the cam positioner 87, the rotating resolver 49,
Contains.

The fixed block 86 includes an electromagnetic shielding cover 73 and a receiving antenna 75 of the antenna section 45, a distributor 88, tuners 89a, 89b, 89c, 89d,
89e, 89f, 89g, 89h and controller 90
A, 90B, monitors 91a, 91b, a cam positioner 92, a failure determination circuit 93, a fixed resolver 50,
Contains. Here, a distributor 88 and a tuner 89a
To 89h, the controllers 90A and 90B, and the monitor 9
1a, 91b, a cam positioner 92, and a failure determination circuit 9
Reference numeral 3 denotes a discriminating device.

The image information on the inner bottom surface of the laminate tube T from each of the CCD cameras 42a to 42l includes the angular position of the rotary inspection table 12 detected by the rotary resolver 49, the height position of the cam follower 47 detected by the cam positioner 87, and the like. The camera selector 43 specifies a camera to which information is to be imported from the camera, selects only image information from the camera, and transmits it to the mixer 44.

As is apparent from FIG. 6, when a laminate tube T has reached the point P ₄ is already the point P _3, the point P
_2, since the subsequent laminated tubes T to the point P ₁ has reached, the image information simultaneously from four cameras are captured. The mixer 44 mixes these four pieces of image information and outputs them to the transmission antenna 74. The mixed image information is transmitted from the transmission antenna 74 to the reception antenna 75. The transmitting antenna 74 and the receiving antenna 75 are electromagnetically shielded by an electromagnetic shielding cover 72 and an electromagnetic shielding cover 73. The mixed image information received by the receiving antenna 75 is divided into frequency bands by the distributor 88 and sent to the tuners 89a to 89h to detect information signals. Information signals from the tuners 89a to 89d among the tuners 89a to 89h are transmitted to the controller 90A.
Sent to Information signals from the tuners 89e to 89h are sent to the controller 90B. Controller 9
0A and 90B are monitored by monitors 91a and 91b.

The cam positioner 92 specifies the camera number based on the detected angular position of the rotation inspection table 12 and the height position of the cam follower 47 detected by the cam positioner 87, and transmits the camera number to the defect determination circuit 93. 92
Sends a select signal to the controller 90A or the controller 90B to select a signal to be sent to the defect determination circuit 93 from among the information signals from the tuners. Failure judgment circuit 9
Reference numeral 3 determines whether the image is good or bad based on the image information signal from each camera and outputs it to the outside. The determination of good or bad is made, for example, by binarizing the image information signal based on brightness and determining the number of pixels in the dark area.

On the other hand, the signal from the outer surface inspection device receives signals from the sensors 95 and 96, and the discrimination circuit discriminates between OK and NG. In the case of NG, the cylinder extends and the proximity SW operates to be processed. .

FIG. 7 shows an example of the configuration of the antenna unit 45.
This will be described with reference to FIG. Here, a hatched portion shows an example of a fixed block. The antenna unit 45 includes a transmitting antenna 74.
And a receiving antenna 75, an electromagnetic shielding cover 72, an electromagnetic shielding cover 73 for electromagnetically shielding them.
And mounting brackets 76 and 77 for each antenna, and lead wires 81 and 82 for supplying signals. As shown in FIG. 5, the transmitting antenna 74 is mounted on the rotating block side, and the receiving antenna 75 is mounted on the fixed block side. The transmitting antenna 74 and the receiving antenna 75 are in a non-contact state and always face each other even when the rotating block rotates, so that information signals can be transmitted and received stably, and the electromagnetic shielding cover 72 and the electromagnetic shielding cover 73 Because it is shielded, it is not affected by external noise.

FIG. 4 shows an example of the configuration of the rotary resolver 49 and the fixed resolver 50. A resolver is a device that gives angular position information such as a rotation axis by an electric signal. As shown, the rotating resolver 49 is a resolver for detecting angular position information on the rotating block side, and the resolver body is attached to the rotating block side. Shaft 71 serving as reference for rotation
Is configured to indicate the same angular position as the fixed shaft 65 by the gears 69, 70a, 70b. That is, the gear 70b is a planetary gear, and the gear 69 and the gear 70a have the same number of teeth. With this configuration, the shaft 71 always shows the same angular position as the fixed shaft 65. The fixed resolver 50 is a resolver for detecting angular position information on the fixed side, and the resolver body is mounted on the fixed block side. The rotation of the rotation shaft 80 is transmitted from the rotation block unit by the gear 78 and the gear 79.

The motor 36 is fixed to the fixed shaft 6 by a motor base 66.
5 and the rotating block is rotated by the gears 67 and 68. FIG. 12 is a diagram showing transition of the controller used for each camera.

FIG. 11 is an operation timing chart of the camera and the controller. With such an operation, the number of expensive controllers can be reduced, and a small number of controllers can be operated efficiently.

The present invention is not limited to the above embodiment. In the above embodiment, the cylindrical laminated tube T is rotated intermittently by the holder H,
The D camera 42 itself was fixed to the rotating block,
Conversely, the CCD camera 42 itself may rotate intermittently, and the laminate tube T itself may not rotate. However, in this case, a transmitting / receiving antenna (for example, a small antenna unit 45) for transmitting / receiving between the camera side rotating the image signal of the CCD camera 42 and the rotating block fixed to the camera is provided. It must be provided for each camera. The movement of the CCD camera 42 is not limited to the rotation (rotation) movement, but may be any other movement, for example, a zigzag movement as long as the entire inner bottom surface can be covered.

In this embodiment, the laminate tube T
Is rotated intermittently, and the quality is inspected based on the image at the time of rest. However, it is also possible to rotate the image continuously, take in the image information, and perform the discrimination. It is the same as the above that the way of movement of the laminate tube may be a zigzag movement instead of the rotation movement.

Further, in the present embodiment, the laminate tube T is revolving. By doing this,
This is because the inspection process can be installed in a small space between the linear manufacturing lines. However, this is not necessarily limited to the orbital motion, and may be a linear motion or the like as long as the camera can be intermittently rotated while moving in one direction and the camera can be inserted.

Further, in the present embodiment, the laminate tube T is moved up and down so that the CCD camera 42 is inserted into the laminate tube T.
The camera 42 may be moved up and down to be inserted into the laminate tube T.

In the above embodiment, the description has been given of the laminated tube T which is a cylindrical body whose bottom end is tapered and has an outlet at a part thereof. It may be a bottomed cylindrical body such as a can.

[0044]

As described above, according to the present invention,
There is an advantage that the outer surface of the cylindrical body can be inspected and determined automatically at a high speed and the efficiency of the entire cylindrical body manufacturing line can be improved.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a tube inspection system using a rotary tube inspection machine according to an embodiment of the present invention.

FIG. 2 is a configuration diagram of a cylindrical body inspection apparatus according to an embodiment of the present invention.

FIG. 3 is a configuration diagram of a tubular body inspection device of the present invention.

FIG. 4 is a cross-sectional view of the tubular body inspection device of the present invention.

FIG. 5 is a block diagram showing image information processing of the tubular body inspection device detected by the CCD camera of the present invention.

FIG. 6 is an operation explanatory view of the tubular body inspection device of the present invention.

FIG. 7 is a configuration diagram illustrating a configuration of an antenna unit.

FIG. 8 is an explanatory diagram of the operation of the identification means of the present invention.

FIG. 9 is a principle explanatory diagram showing a principle of generating an NG signal when performing an outer surface inspection according to the present invention.

FIG. 10 is a block diagram of the inspection determination apparatus of the present invention.

FIG. 11 is an explanatory diagram showing transition of a controller used for each camera of the present invention.

FIG. 12 is an explanatory diagram showing an operation state of the CCD camera and the controller of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Tube insertion part 2 ... Rotary tube inspection machine 3 ... Tube take-out part 4 ... Conveyer device 5 ... Emergency discharge conveyor 6 ... Collecting conveyor 7 ... Pusher 8 ... Tube insertion jig 9 ... Conveyer 10 ... Timing screw 11 ... Star wheel 12 ... Rotation inspection table 13 ... Defective product discharge / star wheel 14 ... Defective product discharge chute 15 ... Defective product pool 16 ... Splice screw 17 ... Distribution star wheel 18 ... Good product transport conveyor 19 ... Stopper 20 ... Tube removal pick and Place 21 ... Stopper 22 ... Pitch correction jig 23 ... Box transport conveyor 24a, 24b ... Box holding device 25a, 25b ... Box stopper 26 ... Tube accumulation conveyor 27 ... Tube box packing device 29, 30 ... Empty holder transport conveyor 31 ... Merge Equipment 32: Empty holder transport Conveyor 35 ... base 36 ... motor 37 ... rotating shaft 38 ... centering jig 39 ... tube inspection device 40 ... tube insertion part 41 ... borescope 42, 42a to 42l ... CCD camera 43 ... camera selector 44 ... mixer 45 ... Antenna part 46 ... Cam 47 ... Cam follower 48 ... Holder elevating rotary shaft 49 ... Rotating resolver 50 ... Fixed resolver 51 ... Light quantity checker 52 ... Borescope main body 53 ... Borescope insertion part 54 ... Light emitting diode part 55 ... Photo sensor part 55a to 55f ... Photo sensor 56 ... Joint fitting 57 ... Bolt 58 ... Stainless steel tube 59 ... Fiber part for light source 60 ... Lens part 65 ... Fixed shaft 66 ... Motor base 67,68,69,70a, 70b ... Gear 71 ... Shaft 72,73 Shield cover 74 Transmitting antenna 75 Transmission antennas 76, 77 ... Mounting brackets 78, 79 ... Gears 80 ... Rotating shafts 81, 82 ... Lead wires 84 ... Discriminating devices 85 ... Rotating blocks 86 ... Fixed blocks 87 ... Cam positioners 88 ... Distributors 89a to 89h ... Tuners 90A 90B ... controller 91a, 91b ... monitor 92 ... Cam Positioner 93 ... defect determination circuits 95, 96 ... optical sensor 100 ... head 101 ... transfer means 200 ... tube inspection system E ... empty boxes F ₁ ... allow inspection area H ... holder M ... registration mark P ... tubular member P ₁ ... tube position on rotating inspection table S ... borescope insertion end face T ... laminated tubes

Claims (5)

(57) [Claims] 1. A plurality of cylinders having a bottom surface at one end.
A rotation inspection table on which a body is placed and rotated, (2) an outer surface inspection means for inspecting an outer surface of the tubular body, and (3) a rotation inspection table based on an inspection value obtained by the outer surface inspection means.
And determining whether or not the cylindrical body has an external abnormality.
Means, and (4) identifying a plurality of circumferential positions of the rotary test table
Provided for each circumferential position, and the corresponding circumferential direction
An angle discriminating unit for displaying a heading position,
The obtained determination information is converted into a cylindrical body that has generated the determination information.
Corresponding to the angle identification unit that displays the circumferential position where the
External defect identification comprising a judgment information display means for displaying
A cylindrical body inspection apparatus comprising: 2. The method according to claim 1, wherein the outer surface inspection means is provided at a predetermined position on the cylindrical body.
Inspect the position of the position mark formed on the
The judging means determines a displacement of the position mark based on the inspection value.
When it is detected, it is determined that there is an external abnormality.
The cylindrical body inspection device according to claim 1, wherein 3. An air screen as said judgment information display means.
(5) Provision of a proximity switch
And the air cylinder includes a head and drives the head.
The proximity switch is opposed to the head of the air cylinder.
And is determined by the proximity of the head.
The method according to claim 1, characterized in that the information is detected and activated.
On-board inspection device. 4. The method according to claim 1 , wherein the angle identification unit includes
The corresponding circumferential position is determined by the
And the proximity switch is connected to the head of the air cylinder.
As well as the convex part and the flat part of the angle discriminating part.
The determination information and the bit corresponding to the determination information.
By detecting the information on the
4. The method according to claim 3, characterized in that it operates only for
Cylindrical body inspection equipment. 5. (1) The same rotation surface of the rotation inspection table.
A plurality of inspection steps for mounting the cylindrical body on the circumference.
Shon are arranged at equal angular, (2) said outer surface inspection unit, said each inspection stations
At a position where the outer surface of each tubular body placed on the
Provided, (3) the determination means, when there is an outer surface abnormalities in the cylindrical body determine
NG signal is generated as the determination information when the rotation inspection table is set.
A rotating plate is provided on the plate,
Circumference of the inspection station on the rotary inspection table
The direction position is determined by the bit information composed of the convex part and the flat part.
The angle identification unit to be displayed and the
The judgment for displaying the judgment information generated by the placed cylindrical body.
An air cylinder as constant information display means.
Surface defect identification means are provided for each inspection station
Is and, (5) the proximity switch is below the rotary inspection table
Fixed and rotated to the position of the switch
Each external surface defect identification means
Means for displaying the judgment information and the corresponding to the judgment information.
Detecting the bit information.
5. The cylindrical body inspection device according to 4.