JP2000065551A - Inspection device for cylindrical object - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an inspection device for a cylindrical object that can quickly and surely inspect a member of cylindrical objects and contributes to quality improvement of the cylindrical objects being inspected objects, automation and labor-saving of the inspection. SOLUTION: In condition where a cylindrical object W is mounted among a plurality of rotatable rollers 104 which are arranged at predetermined intervals and intermittently transferred to a transfer direction, an external appearance of the cylindrical object W is inspected while rotating each of the rollers 4 and rotating the cylindrical object W among the rollers 104 about an axis of the cylindrical object by continuously travelling a belt 106 in closed contact with each of the rollers 104.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to, for example, pure Ni,
The present invention relates to a cylindrical column inspection apparatus for inspecting a cylindrical column (pellet) made of a metal such as pure Co or an alloy thereof while rotating the column around its axis.

[0002]

2. Description of the Related Art Conventionally, various inspections have been carried out on such a cylindrical body in order to maintain its quality. That is, for example, it is inspected whether or not burrs or blemishes occur on the end face of the cylindrical body, and whether or not the outer diameter and length of the cylindrical body are within predetermined ranges.

[0003]

Generally, inspection of the above-mentioned cylindrical body is often performed by visual inspection of an operator. In such a case, the inspection operation requires skill and requires the operator to perform inspection. There is a problem that such a burden is large and a large number of people are required. Therefore, there has been a demand for automation of inspection work, labor saving, and improvement of reliability of inspection.

The present invention has been made in view of the above circumstances, and an object of the present invention is to enable quick and reliable inspection of a large number of cylinders, thereby improving the quality of the cylinders to be inspected. Another object of the present invention is to provide an inspection apparatus for a cylindrical body that can contribute to automation and labor saving of inspection.

[0005]

According to a first aspect of the present invention, there is provided an inspection apparatus for a cylindrical body for inspecting a cylindrical body while rotating the cylindrical body around its axis, wherein a plurality of rotatable units arranged at predetermined intervals. The rollers are intermittently transported in the transport direction, the cylindrical body is placed between these rollers, and the belts in close contact with the respective rollers are continuously run. According to the first aspect of the present invention, in a state where the cylindrical body is placed between a plurality of rotatable rollers which are arranged at a predetermined interval and which are intermittently transported in the transport direction, each of the rollers is The belt is brought into close contact with each other, and each roller is rotated to rotate the cylindrical body between the rollers about its axis, and the appearance of the cylindrical body is inspected.

According to a second aspect of the present invention, there is provided a cylindrical / burr inspection means provided on a side of an end face of a cylindrical body placed between rollers. According to the second aspect, the end face of the cylindrical body is inspected by a yuga / burr inspection means provided on the side of the end face of the cylindrical body to check for the presence or absence of burrs or burrs on the cylindrical body.

According to a third aspect of the present invention, the inspection means is configured to irradiate the end face of the cylindrical body to be inspected with the inspection light and measure the length of the line segment on the end face based on the irradiation light. The difference between the maximum value and the minimum value of the measured length of the line segment of the end face is calculated. According to the third aspect, as the cylindrical body rotates, the end face of the cylindrical body is irradiated with the inspection light by the Yumi / burr inspection means, and the length of a line segment (chord) of the end surface is sequentially measured. At the same time, the difference between the maximum value and the minimum value of the length of the line segment on the end face is calculated to determine the presence or absence of blemishes or burrs.

According to a fourth aspect of the present invention, an outer diameter inspection means is provided outside the outer peripheral surface of the cylindrical body placed between the rollers. According to the fourth aspect, the outer diameter of the cylindrical body is inspected by an outer diameter inspection means provided outside the outer peripheral surface of the cylindrical body to determine the outer diameter of the cylindrical body.

According to a fifth aspect of the present invention, the outer diameter inspection means is disposed outside the outer peripheral surface of the cylindrical body to be inspected, and is disposed in a diametrically opposed manner with the cylindrical body interposed therebetween. Irradiate the inspection light to the outer peripheral surface of each, and measure the distance to the outer peripheral surface based on each of them, and calculate the outer diameter of the cylindrical body based on the measured distance to the outer peripheral surface. It is constituted in. According to the fifth aspect, the outer peripheral surface of the cylindrical body is irradiated with inspection light by the outer diameter inspection means arranged in the diametrically opposed manner with respect to the outer peripheral surface of the cylindrical body. , And calculating the outer diameter of the cylindrical body based on the distance to the outer peripheral surface of the cylindrical body to determine whether or not the outer diameter of the cylindrical body is within a tolerance.

According to a sixth aspect of the present invention, the roller is provided with a cutout portion through which the inspection light can pass. According to the sixth aspect, the notch portion formed in the roller prevents the inspection light of the outer diameter inspection means from irradiating the roller, and irradiates the outer peripheral surface of the cylindrical body without fail. Never be.

According to a seventh aspect of the present invention, the length inspection means is provided on the side of the end face of the cylindrical body placed between the rollers. According to the seventh aspect, the length of the cylindrical body is calculated by inspecting the end face of the cylindrical body by the length inspection means provided on the side of the end face of the cylindrical body.

According to an eighth aspect of the present invention, the length inspection means is arranged opposite to both end faces of the cylindrical body to be inspected, and irradiates inspection light to both end faces of the cylindrical body, respectively. , The distance to each of the end faces is measured, and the length of the cylindrical body is calculated based on the measured distances to the end faces. According to the present invention, the inspection light is applied to both end faces of the cylindrical body by the length inspection means opposed to the both end faces of the cylindrical body, and the distance to the both end faces of the cylindrical body is measured. Is measured, and the length of the cylindrical body is calculated based on the distance to both end faces of the cylindrical body to determine whether or not the length of the cylindrical body is within the tolerance.

According to a ninth aspect of the present invention, a sorting mechanism for sorting the column being transported based on the pass / fail judgment of the inspection means is provided on the transport path of the column. According to the ninth aspect, by operating the sorting mechanism based on the pass / fail judgment of the inspection means, the cylindrical body being conveyed is separated into non-defective products and defective products.

[0014]

FIG. 1 is a block diagram showing an embodiment of the present invention.
This will be described with reference to FIG. FIG. 1 is a plan view of a cylindrical body inspection apparatus showing one embodiment of the present invention, and FIG.
, FIG. 3 is a front view of the measurement conveyor, and FIG.
5 is a right side view of FIG. 3, FIG. 6 is a plan view of the measurement conveyor, and FIG. 7 is a front view of FIG. 1 and 2, reference numeral 1 denotes a belt conveyor, which is a hopper feeder (not shown).
The cylindrical body W sent via the parts feeder and the linear feeder is transferred in a direction along the axis.

A pair of short timing sensors 2 and short inspection sensors 3 are arranged on both sides of the intermediate portion of the belt conveyor 1 so as to face each other. The short-length timing sensor 2 and the short-length inspection sensor 3 are installed at predetermined intervals in the front and rear, and the columnar body W moves between the short-length timing sensor 2 and the short-length inspection sensor 3. By passing, it is determined whether or not the cylindrical body W is longer than a predetermined length (short dimension).

That is, when the short-size timing sensor 2 captures the front end of the cylindrical body W to be inspected, whether or not the short-size inspection sensor 3 can detect the rear end of the cylindrical body W depends on whether or not it can detect the rear end. It is determined whether W is longer than a predetermined length or short. The cylindrical body W determined to be short is provided on the other side of the belt conveyor 1 by a discharge nozzle provided on one side of the belt conveyor 1 in front of the short timing sensor 2. It is designed to be discharged to the short size sorting chute.

As shown in FIG. 2, a separate pusher 4 is provided on one side of the discharge end of the belt conveyor 1 to discharge the cylindrical body W reaching the discharge end to the other side. . This separate pusher 4 is provided with a pressing tool 4B at the tip of a piston rod of an air cylinder 4A. By operating this air cylinder 4A,
The pressing tool 4B carries out the cylindrical bodies W on the belt conveyor 1 one by one to the other side of the belt conveyor 1.

Further, on the other side of the belt conveyor 1, facing the pressing member 4B of the separate pusher 4, there is provided an introduction shooter 5 for feeding the columnar body W downward through a zigzag passage. I have. A full sensor 6 for detecting a cylindrical body W in a passage of the introduction shooter 5 from the side thereof is provided at an intermediate portion of the introduction shooter 5.

Beside the discharge end of the introduction shooter 5,
A timing shutter 7 for opening and closing the carry-out end is provided. A measurement conveyor 10 for receiving the cylindrical body W falling from the introduction shooter 5 is provided below the discharge end of the introduction shooter 5. The timing shutter 7 has an opening / closing member 7B provided at the tip of a piston rod of an air cylinder 7A.
Is operated, the opening / closing tool 7B moves the introduction shooter 5
Is opened and closed, and the cylindrical bodies W in the introduction shooter 5 are placed on the measuring conveyor 10 one by one.

In the measuring conveyor 10, a pair of endless chains 100 arranged in parallel with each other are wound around a pair of sprockets 101 and 102 installed at predetermined intervals, respectively. The connecting piece 10 of each of the chains 100 which are pin-connected to each other
3, the connecting pieces 103 inside each other are formed to protrude upward, and between the upper protruding portions of these connecting pieces 103,
Black rollers 104 having antistatic properties are rotatably supported, and semicircular grooves 105 formed at both ends of the rollers 104 are provided with grooves for rotating the rollers 104 and having a cross-sectional shape. Circular endless belt 10
6 are attached, and these belts 106 are coaxial with the sprockets 101 and 102, and the pulleys 10 are arranged inside the sprockets 101 and 102.
7 and 120 respectively.

As shown in FIG. 6, each of the rollers 104 is connected to a shaft 108 rotatably supported between the upper protruding portions of the two connecting pieces 103 via a small-diameter portion 109. Parts 110 and 111 are attached. Each of the rollers 110 and 111 has the groove 105 formed at an end thereof on the side of the connecting piece 103, and a portion near the small-diameter portion 109 is formed by the connecting piece 1
The mounting portion 112 is formed to have a slightly smaller diameter than the end on the 03 side and to mount the columnar body W thereon.

The small-diameter portion 109 and both mounting portions 112
Are cutout portions 113 that allow the inspection light to pass in the vertical direction. As shown in FIG. 5, the sprocket 101 at the carry-in end of the measurement conveyor 10 is rotatably mounted on a rotating shaft 114, and the sprocket 102 at the carry-out end of the measurement conveyor 10 is shown in FIG. Thus, it is attached to the rotating shaft 115.
These rotating shafts 114 and 115 are arranged in parallel with each other, and are rotatably supported by a pair of bearing members.

Further, at one end of the rotating shaft 115,
A sprocket 116 is mounted, and the sprocket 116 and a rotating mechanism 11 composed of a motor and the like are provided.
A chain 117 is wound around a sprocket 118 attached to the output shaft 9. And
By intermittently rotating the output shaft of the rotation mechanism 119, the chain 10
0 intermittently moves, and each roller 104 intermittently moves by one pitch (the interval between two adjacent rollers 104).

The pulley 107 is attached to the rotating shaft 114 on the loading side of the measuring conveyor 10, and the rotating shaft 1 on the unloading side of the measuring conveyor 10 is mounted on the rotating shaft 114.
15, the pulley 120 is rotatably mounted. The belt 106 is inserted between the semicircular grooves of the pulleys 107 and 120 and the groove 105 of the roller 104 so as to travel.

A sprocket 121 is attached to one end of the rotating shaft 114.
A chain 122 is wound around the sprocket 123 mounted on an output shaft of a rotation mechanism 124 constituted by a motor or the like. Then, by continuously rotating the output shaft of the rotation mechanism 124,
The belt 106 moves continuously via the pulley 107. Reference numeral 125 in FIG. 3 denotes a tension mechanism that applies tension to the chain 117.

The measurement conveyor 10 is located one pitch ahead of the position where the columnar body W is placed by the introduction chute 5 and on the side of the measurement conveyor 10 between the rollers 104 of the measurement conveyor 10. A sensor 20 for detecting the presence or absence of the columnar body W placed on the sensor is provided. In addition, on the front side of the cylindrical detection position of the sensor 20 by one pitch and on the side of the measurement conveyor 10, a yugami / burr inspection means 30 is installed.

The Yugami / burr inspection means 30 irradiates the end face of the cylindrical body W to be inspected with inspection light (laser light),
Based on this, as shown in FIG. 8 or FIG. 9, length measuring means for measuring the lengths D1, D2, D3, D4... And a difference calculating means for calculating a difference between the maximum value and the minimum value of the measured length of the line segment of the end face.

Then, based on the result of the operation of the difference calculating means, the presence or absence of the burrs on the cylindrical body W is determined. In addition, the above-mentioned yugami / burr inspection means 30
The outer diameter inspection means 32 is installed one pitch ahead of the Yumi / Burr inspection position according to the above and above and below the measurement conveyor 10.

The outer diameter inspection means 32 is located above and below the outer peripheral surface of the cylindrical body W to be inspected.
The inspection light (laser light) is radiated to the outer peripheral surface of the columnar body W, respectively, while being opposed to each other in the diameter direction with the
Distance measuring means for measuring the distance to the outer peripheral surface based on this, and outer diameter calculating means for calculating the outer diameter of the cylindrical body W based on the distance to the outer peripheral surface measured by these distance measuring means, It is composed of

As shown in FIG. 10, the outer diameter calculating means includes a distance L between the two distance measuring means, which is measured in advance, and distances A and B to the cylindrical body W measured by the respective distance measuring means. Of the cylindrical body W = L− (A +
According to B), the outer diameter of the cylindrical body W is calculated.

Further, two pairs of length inspection means 34 and 35 are supported at one pitch and three pitches forward of the outer diameter inspection position by the outer diameter inspection means 32 and on both sides of the measuring conveyor 10. It is installed in a state attached to the front and rear surfaces of the member 36. These length inspection means 34, 35
Are arranged opposite to both side surfaces of the cylindrical body W to be inspected, and irradiate inspection light (laser light) to both end surfaces of the cylindrical body W, respectively. And length calculating means for calculating the length of the cylindrical body W based on the distances to both end faces measured by the distance measuring means.

Then, the length inspection means 34
As shown in the figure, the length near the outer edge of the cylindrical body W is detected,
Further, the length inspection means 35 detects the length of the columnar body W near the center. The principle of measuring the length of the cylindrical body W detected by the respective length inspection means 34 and 35 is as follows.
The principle of measuring the outer diameter of the cylindrical body W detected by the outer diameter inspection means 32 is the same as that described above. The distance between the two distance measurement means is measured in advance, and the distance between the distance measurement means and the two distance measurement means is measured. The length of the cylindrical body W is calculated from the distance to both end faces of the cylindrical body W measured by the means.

Each of the length inspection means 34, 35
The distance measuring means measures the distance to the end face of the cylindrical body W over the entire circumference of the cylindrical body W, and detects the state (flatness) of the end face based on the measurement result. . A chain guide 22 for guiding and supporting the chain 100 is provided below the inspection position of the measuring conveyor 10 by the inspection means 30, 32, 34, 35.

A non-defective shooter 40 is provided at the discharge end of the measuring conveyor 10 so as to be inclined downward as it goes forward. At the end of the non-defective shooter 40 on the measurement conveyor 10 side, a sorting mechanism 42 is installed. The sorting mechanism 42 includes a sorting damper 420 that rotates upward to open the lower surface (transport surface) of the non-defective shooter 40, and an air cylinder 421 that is connected to the sorting damper 420 and rotates the sorting damper 420. When the cylindrical body W is determined to be defective based on the inspection results of the yugami / burr inspection means 30, the outer diameter inspection means 32, and the length inspection means 34 and 35, the air By moving the piston rod of the cylinder 421 forward, the sorting damper 4
The lower surface of the non-defective shooter 40 is opened by rotating the upper part 20 upward, and the column W is dropped from the opening.

A defective product shooter 44 is provided below the opening (sorting damper 420) on the lower surface of the non-defective product shooter 40, and a defective product receiving box 46 is connected to the lower end of the defective product shooter 44. I have. Also, a good shooter 40
A non-defective product counter 48 for counting the non-defective products rolling in the non-defective product shooter 40 from the side thereof is installed in the middle portion of the non-defective product.

Next, a description will be given of a case where the appearance inspection of the cylindrical body W is performed by the inspection apparatus for the cylindrical body W configured as described above. First, the cylindrical body W sent through the hopper feeder, the parts feeder, and the linear feeder is placed on the belt conveyor 1 and sent in a direction along the axis thereof.

While being conveyed by the belt conveyor 1, it is determined by the short timing sensor and the short inspection sensor 3 whether or not the cylindrical body W has a predetermined length or more.
Here, when the cylindrical body W is determined to be a short product, the cylindrical body W is discharged laterally from above the belt conveyor 1 by the discharge nozzle.

Further, the cylindrical body W determined to have a predetermined length or more.
Is sent to the unloading end of the belt conveyor 1 and is stopped by being blocked by the pressing tool 4B of the separate pusher 4 protruding above the belt conveyor 1. In this state, the piston rod of the air cylinder 4A of the separate pusher 4 is retracted and then moved forward, so that one columnar body W is pushed out by the pressing tool 4B in a direction orthogonal to its axis, and the belt conveyor 1 Is introduced into the introduction shooter 5 on the side of.

As described above, the separate pusher 4
Repeats the backward and forward operations of the piston rod of the air cylinder 4A, thereby sequentially feeding the cylindrical bodies W on the belt conveyor 1 one by one into the introduction shooter 5. In this case, when it is confirmed by the full sensor 6 that the number of the cylindrical bodies W in the introduction shooter 5 has reached a predetermined number,
The operation of the separate pusher 4 is temporarily stopped, and the system waits for the cylindrical body W in the introduction shooter 5 to be carried out.

On the other hand, at the discharge end of the introduction shooter 5, the chain 100 (roller
4) In accordance with the intermittent movement, while the roller 104 is stopped, the piston rod of the air cylinder 7A of the timing shutter 7 is moved backward and forward to drop one cylindrical body W from the introduction shooter 5. It is placed between the rollers 104.

As described above, the timing shutter 7
Each time the measurement conveyor 10 is stopped, the air cylinder 7A is operated, and the cylinder W
Is taken out and placed on the space between the rollers 104.

Then, the roller 104 of the measuring conveyor 10
The columnar body W placed on the space is horizontally moved along the transport direction by one pitch every predetermined time together with the roller 104 by the intermittent driving of the chain 100 by the rotation mechanism 119, and the belt 106 is rotated by the rotation mechanism 124. By continuous traveling along the transport direction, as shown in FIG.
The roller 104 rotates clockwise and the cylindrical body W
Continuously rotates counterclockwise.

In this state, the cylindrical body W between the rollers 104
When the sensor reaches the position detected by the sensor 20, the sensor 2
0, whereby each of the inspection means 30, 32,
The inspection of the cylindrical body W by 34 and 35 can be started (standby). Next, when the cylindrical body W reaches the inspection position of the yugami / burr inspection means 30, the end face of the cylindrical body W to be inspected is irradiated with inspection light (laser light) by the yugami / burr inspection device 30, and Based on FIG.
Alternatively, as shown in FIG.
Are measured over the entire circumference of the cylindrical body W, and a difference between the maximum value and the minimum value of the length of the line segment of the end face is calculated based on the measurement results.

Subsequently, the cylindrical body W is connected to the outer diameter inspection means 32.
When the inspection position is reached, the outer diameter inspection means 32 irradiates the outer peripheral surface of the cylindrical body W with inspection light (laser light) from above and below the outer peripheral surface, and based on this, the distance to the outer peripheral surface is respectively determined The measurement is performed over the entire circumference of the cylindrical body W, and the outer diameter of the cylindrical body W is calculated based on the measured distance to the outer peripheral surface. On this occasion,
Since the notch 113 is formed in a portion of the roller 104 where the inspection light is irradiated, the inspection light does not impinge on the roller 104 and does not hinder the outer diameter inspection.
The outer diameter of the cylindrical body W can be inspected smoothly.

Further, the cylindrical body W is provided with a length inspection means 3.
When the inspection positions 4 and 35 are reached, inspection light (laser light) is applied to both end surfaces of the cylindrical body W by the length inspection means 34 and 35, respectively. Is measured over the entire circumference of the columnar body W near the center and the outer edge of the columnar body W, and based on the measured distances to both end faces, the center of the columnar body W is measured. The lengths of the shift and the outer edge are calculated. Further, based on the distance to the both end faces measured over the entire circumference of the cylindrical body W, the state (flatness) of both end faces of the cylindrical body W is detected near the center and the outer edge of the cylindrical body W. Is done.

Thus, each of the inspection means 30, 32,
The cylindrical body W having undergone the inspection by 34 and 35 is sent to the unloading end of the measuring conveyor 10 and delivered to the non-defective shooter 40. In this case, the above-mentioned yugami / burr inspection means 30,
The cylindrical body W determined to be non-defective according to the result of the inspection of the cylindrical body W by the outer diameter inspection means 32 and the length inspection means 34 and 35, the outer diameter, the length, and the end face, is directly processed by the non-defective shooter 40. Rolling according to the inclination,
It is counted by the non-defective counter 48.

On the other hand, each of the inspection means 30, 32, 34,
For the cylindrical body W determined to be defective by 35, the transport surface of the non-defective shooter 40 is opened by moving the piston rod of the air cylinder 421 of the selection mechanism 42 forward and rotating the selection damper 420 upward. Let me
The defective cylindrical body W is dropped downward from the opening and dropped into the defective product shooter 44. Then, the defective product is sent to the defective product receiving box 4 via the defective product shooter 44.
6.

In this manner, the appearance inspection of the cylindrical body W is performed, and based on the inspection result, the cylindrical body W can be smoothly separated into non-defective products and defective products.

[0049]

According to a first aspect of the present invention, a plurality of rotatable rollers arranged at predetermined intervals are intermittently transported in the transport direction, and the cylindrical body is placed between these rollers. In addition, since the belts that are in close contact with the respective rollers are continuously run, the belts that are in close contact with the respective rollers in a state where a cylindrical body is placed between the rollers are described. By running continuously, each roller can be rotated, and the external appearance of the cylindrical body can be inspected while smoothly rotating the cylindrical body between the rollers around its axis. Therefore, a large number of cylinders can be inspected quickly and reliably, which contributes to improvement of the quality of the cylinder to be inspected, automation of the inspection, and labor saving.

According to a second aspect of the present invention, since the burrs and burrs are provided on the side of the end face of the cylindrical body placed between the rollers, the burrs and burrs are used to detect the burrs. By inspecting the end face of the cylindrical body, it is possible to easily inspect the cylindrical body for the presence or absence of burrs or burrs.

According to a third aspect of the present invention, the burrs and burr inspection means irradiates the end face of the cylindrical body to be inspected with the inspection light, measures the length of the line segment of the end face based on the irradiation light, Since it is configured to calculate the difference between the maximum value and the minimum value of the measured length of the line segment of the end face, with the rotation of the cylindrical body, by the Yumi / burr inspection means,
By sequentially measuring the length of the line segment on the end face of the cylindrical body and calculating the difference between the maximum value and the minimum value of the length of the line segment on the end face, it is possible to easily determine the presence or absence of blemishes or burrs. be able to.

According to a fourth aspect of the present invention, the outer diameter inspection means is provided outside the outer peripheral surface of the cylindrical body placed between the rollers. By examining the outer peripheral surface of the body and determining the outer diameter of the cylindrical body, the outer diameter inspection of the cylindrical body can be performed smoothly.

According to a fifth aspect of the present invention, the outer diameter inspection means is disposed outside the outer peripheral surface of the cylindrical body to be inspected, and is disposed in a diametrically opposed manner with the cylindrical body interposed therebetween. Irradiate the inspection light to the outer peripheral surface of each, and measure the distance to the outer peripheral surface based on each of them, and calculate the outer diameter of the cylindrical body based on the measured distance to the outer peripheral surface. Since the outer diameter inspection means measures the distance to the outer peripheral surface of the cylindrical body, and calculates the outer diameter of the cylindrical body based on the measurement result, the outer diameter of the cylindrical body is calculated. It is possible to reliably determine whether or not the outer diameter is within the tolerance.

According to a sixth aspect of the present invention, since the roller is provided with a cutout through which the inspection light can pass, the cutout prevents the inspection light of the outer diameter inspection means from impinging on the roller. By smoothly irradiating the outer peripheral surface of the cylindrical body, the roller does not disturb the measurement,
The outer diameter of the cylindrical body can be reliably inspected.

According to a seventh aspect of the present invention, since the length inspection means is provided on the side of the end face of the cylindrical body placed between the rollers, the length inspection means allows the cylindrical body to be mounted. By inspecting the end face and calculating the length of the cylindrical body, the length inspection of the cylindrical body can be easily performed.

According to an eighth aspect of the present invention, the length inspection means is arranged opposite to both end faces of the cylindrical body to be inspected, and irradiates inspection light to both end faces of the cylindrical body, respectively. In addition to measuring the distances to the both end faces based on the above, the length of the cylindrical body is calculated based on the measured distances to the both end faces. By means, while measuring the distance to both end surfaces of the cylindrical body, and calculating the length of the cylindrical body based on this measurement result, whether or not the length of the cylindrical body is within the tolerance is smoothly. Can be determined.

According to a ninth aspect of the present invention, a sorting mechanism for selecting a cylindrical body being conveyed based on the pass / fail judgment of the inspecting means is provided in the conveying path of the cylindrical body. By operating the sorting mechanism based on
The column being transported can be reliably separated into good and defective products.

[Brief description of the drawings]

FIG. 1 is a plan view of an inspection apparatus showing one embodiment of the present invention.

FIG. 2 is a front view of FIG.

FIG. 3 is a front view of a measurement conveyor unit.

FIG. 4 is a left side view of FIG. 3;

FIG. 5 is a right side view of FIG. 3;

FIG. 6 is a plan view of a measurement conveyor.

FIG. 7 is a front view of FIG. 6;

FIG. 8 is an explanatory view showing a state of a stagnation on an end face of a cylindrical body.

FIG. 9 is an explanatory view showing a state of burrs on an end face of a cylindrical body.

FIG. 10 is an explanatory diagram illustrating the principle of calculating the outer diameter of a cylindrical body.

FIG. 11 is an explanatory diagram illustrating a length inspection of a cylindrical body.

[Explanation of symbols]

 W cylindrical body 30 Yugami / burr inspection means 32 Outer diameter inspection means 34, 35 Length inspection means 42 Sorting mechanism 104 Roller 106 Belt 113 Notch

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yasuo Ikeda 1230 Kamideya, Okegawa-shi, Saitama Mitsubishi Material Co., Ltd. F term (reference) in Okegawa Works 2F065 AA06 AA22 AA26 AA47 AA52 AA61 BB06 CC00 DD00 FF68 GG04 MM04 PP16 QQ25 QQ29 TT01 TT02 TT03 UU04 2G051 AA90 AB20 BA10 DA05 DA06 DA08 DA13

Claims (9)

[Claims] 1. An inspection apparatus for a cylindrical body for inspecting a cylindrical body while rotating the cylindrical body around an axis thereof, wherein a plurality of rotatable rollers arranged at predetermined intervals are intermittently transported in a transport direction, In addition, the columnar body is placed between the rollers, and the belts that are in close contact with the respective rollers are continuously run. 2. An apparatus for inspecting a cylindrical body according to claim 1, further comprising inspection means for inspecting a burr / burr on a side of an end face of the cylindrical body placed between the rollers. 3. The inspecting means for irradiating a burr / burr irradiates an end face of a cylindrical body to be inspected with inspection light to measure a length of a line segment of the end face based on the inspection light. The inspection apparatus for a cylindrical body according to claim 2, wherein the apparatus is configured to calculate a difference between a maximum value and a minimum value of the length of the minute. 4. The apparatus for inspecting a cylindrical body according to claim 1, wherein an outer diameter inspection means is provided outside the outer peripheral surface of the cylindrical body placed between the rollers. 5. An outer diameter inspection means is arranged outside the outer peripheral surface of the cylindrical body to be inspected, in the diametrical direction across the cylindrical body, and has an inspection light on the outer peripheral surface of the cylindrical body. And irradiating them, respectively, and measuring the distances to the outer peripheral surface based on them, respectively, and calculating the outer diameter of the cylindrical body based on the measured distances to the outer peripheral surface. The cylindrical column inspection device according to claim 4, wherein 6. The inspection apparatus for a cylindrical body according to claim 5, wherein a cutout portion through which the inspection light can pass is formed in the roller. 7. An apparatus for inspecting a cylindrical body according to claim 1, wherein a length inspection means is provided on a side of an end surface of the cylindrical body placed between the rollers. 8. A length inspection means is disposed opposite to both end faces of a cylindrical body to be inspected, and irradiates inspection light to both end faces of the cylindrical body. The inspection apparatus for a cylindrical body according to claim 7, wherein the distance to each of the cylindrical bodies is measured, and the length of the cylindrical body is calculated based on the measured distances to both end faces. . 9. A method according to claim 2, wherein a sorting mechanism for sorting the cylindrical body being transported based on the pass / fail judgment of the inspection means is provided in the transport path of the cylindrical body. , 7
Or the inspection device for a cylindrical body according to 8.