JP2001327929A - Device for inspecting work - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase the speed of inspection as compared with a conventional intermittent inversion method by a method in which a groove is formed in a belt, a work is placed in the groove, the two end surfaces of the work are inspected simultaneously, and the work is held by an inversion belt with a groove and inverted continuously. SOLUTION: A V groove 201a is formed in a conveyance belt 201, and while the work 1 placed in the groove 201a is conveyed, the size and adjacent two surfaces 1c, 1d of the work 1 are inspected by the first camera 203. The inversion belt 205 contacts the conveyance belt 201, and a similar V groove 205a is formed in the inversion belt 205. The work 1 is held between the conveyance belt 201 and the inversion belt 205 and inverted/transferred continuously from the conveyance belt 201 to the inversion belt 205, and other adjacent two surfaces 1e, 1f of the inverted work 1 are inspected by the second camera 207. After the inspection, the capacity of a capacitor is measured by a measuring probe 233. After the completion of the measurement, the works 1 are counted every given number of them and packed in a bulk case 303.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work inspecting apparatus for inspecting an end face of a work.

[0002]

2. Description of the Related Art As a conventional work inspection apparatus, an apparatus described in Japanese Patent Application No. 9-315566 is known. This apparatus is an apparatus for inspecting an end face of a hexahedral work, and a first disc having a plurality of first concave portions formed on an outer periphery for gripping the work, and the first disc is disposed orthogonally to the first disc. , A large number of second workpieces that receive and grip the work in the first recess.
A second disc having a recess formed on the outer periphery. Further, a first end face inspection camera for inspecting three surfaces of the work is provided outside the first disk, and a second end surface inspection camera for inspecting the remaining three surfaces of the work outside the second disk. Is provided.

[0003]

In the work inspection apparatus described in the above-mentioned publication, the work is gripped by a concave portion formed in the disk and inspected, so that the work is inserted into the disk and discharged from the disk. In addition, the rotation of the disk must be stopped each time, so that there is a limit to inspecting the work while conveying it at high speed.

[0004] The present invention has been made in view of the above points, and it is an object of the present invention to improve the inspection speed of a workpiece in a workpiece inspection apparatus.

[0005]

In order to solve the above-mentioned problems, in the present invention, a groove is formed in a conveying belt, a work is placed in the groove and conveyed, and an image of an exposed surface of the work is taken. The work inspection device was configured to inspect.

In the present invention, a work is placed and conveyed in a gap formed between at least two conveyor belts, and the gap is gradually narrowed toward the downstream side in the conveying direction. The posture of the work is provided so as to be correctable.

[0007] Further, a reversing belt is provided which partially contacts the transport belt, and a groove opposing the groove is formed in the reversing belt, and the workpiece is transferred from the transport belt to the reversing belt to transfer the workpiece. Was inverted.

By providing a vibration means for vibrating the transport belt, the posture of the work placed on the transport belt can be corrected.

[0009] The groove may be formed in a V shape.

Further, a first camera for imaging the exposed surface of the work placed on the transport belt and a second camera for imaging the exposed surface of the work inverted by the reversing belt are provided.

Here, on the downstream side of the first and second cameras, there are provided defective discharge units capable of discharging a work determined to be defective by inspection of each of the cameras. The work is provided such that the work can be discharged by blowing compressed air.

In addition, a non-defective product extracting section for sending a non-defective product that has passed the inspections of the first and second cameras to a work filling section is provided. The non-defective product extracting section is provided so that the work can be discharged by blowing compressed air. Is adopted.

Further, according to the present invention, there is provided a work inspecting apparatus for forming a groove in a transfer belt, placing a work in the groove, transferring the work, and imaging and inspecting an exposed surface of the work. Vibration means for vibrating the belt is provided, the work has a rectangular shape in cross section, the width of the groove is shorter than the length of a diagonal of the square, and the depth of the groove is such that the work is placed in the groove. In some cases, the work has a dimension such that a corner of the work does not touch the bottom of the groove.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIGS. 1 and 2 show a work inspection apparatus 10 according to a first embodiment of the present invention, which measures the dimensions of a work 1 (ceramic chip capacitor) and four end faces (1c, 1d, 1e, 1c) as shown in FIG. Check 1f). The work 1 is, for example, a hexahedron of approximately 1 mm × 0.5 mm × 0.5 mm, and two opposing surfaces 1 a and 1 b are electrodes. The work inspecting apparatus 10 of the present invention uses the cameras 203 and 207 to measure the dimensions of the work 1 and the damage, discoloration,
Inspect for dents.

[0015] As shown in FIG.
Are a work supply unit 100 for aligning and supplying the work 1, a work inspection unit 200 for inspecting the dimensions of the work 1 and the quality of the remaining four surfaces other than the electrodes, and a work 1 having been inspected.
And a work filling section 300 for counting the number of works 1 and packing the counted works 1 into a case.

In the work supply unit 100, a parts feeder 101 is arranged. A large number of workpieces 1 loaded into the ball portion of the parts feeder 101 are transported along the spiral in the transport groove 103 while being aligned and transported.
Supplied individually. As the parts feeder 101, for example, those described in Japanese Patent Application Laid-Open No. 5-286549 can be used. The workpiece 1 is placed on the parts feeder 1 such that the electrodes 1a and 1b are located at the front and rear positions in the transport direction.
The sheet is extruded to the conveyance path 103 by the reference numeral 01 and sent to the work inspection section 200.

The work inspection unit 200 includes an endless conveyance belt 201 for conveying the work 1 and a conveyance belt 201.
First camera 203 for imaging work 1 conveyed above
A reversing belt 205 abutting on the transport belt 201;
A second camera 207 for imaging the work 1 on the reversing belt 205. The transport belt 201 is hung between a driving pulley 209, a driven pulley 211, and a tension pulley 213, and the driving pulley 209 is a motor 2
15 is rotated.

As shown in FIG. 4, a V-shaped groove 201a is formed endlessly at the center of the conveying belt 201 along the conveying direction of the conveying belt 201 (from left to right in FIG. 4). Have been. As shown in FIG. 4, the work 1 is transported with the electrodes 1a, 1b back and forth.
From one to another in the V-groove 201a. At this time, V groove 2
The end surfaces 1e and 1f of the work 1 are placed in contact with the groove surface 01a, and the other end surfaces 1c and 1d facing each other are exposed. The exposed end faces 1c and 1d are imaged by the first camera 203. By the output signal from the first camera 203,
The external dimensions of the work 1 and the cracks, flaws, discoloration, and flying silver paste of the end faces 1c and 1d are image-processed and inspected.

The work 1 is located upstream of the first camera 203.
A photo sensor 217 for detecting passage of the first camera 203 is provided based on a detection signal of the photo sensor 217.
Is determined, and the dimensions of the work 1 and the image processing of the inspection surfaces 1c and 1d are performed. Also, the first camera 20
A suction nozzle 219 is disposed downstream of the work 3, and the work 1 determined to be defective by the inspection of the first camera 203 is sucked and discharged by the suction nozzle 219.

The pulley 209 has a reversing belt 205.
(FIG. 1). The reverse belt 205 has a V-shaped groove 201 similar to the V-shaped groove formed on the transport belt 201.
a, and partially abuts the transport belt 201 so as to sandwich the work 1 as shown in FIG. That is, as shown in FIG.
Abuts over approximately half the circumference of the pulley 209,
The reversing belt 205 is hung on a plurality of pulleys 221 and 222, and the pulley 222 is driven by a driving motor (not shown).
As a result, it is driven to rotate in synchronization with the transport belt 201.
The work 1 is rotated approximately 180 degrees by the pulley 209 while being sandwiched between the V-groove 201a of the transport belt 201 and the V-groove 201a of the
01 to the reversing belt 205. In the reversing belt 205, the end surfaces 1e and 1f of the workpiece 1 reversibly transferred on the V-groove 201a of the transport belt 205 are exposed. In the vicinity of the lower peripheral edge of the pulley 209, a scraper 225 is disposed, and the work 1
The work 1 is surely transferred to the reversing belt 205.

A second camera 207 is disposed downstream of the scraper 225.
Inspection and image processing of the dimensions of the work 1 and cracks, flaws, discoloration, and silver paste flying of the end faces 1e and 1f are performed. Also,
The shooting timing of the second camera 207 is determined by the first camera 20.
3, the work 1 is detected by a photo sensor (not shown) installed on the upstream side of the work 1 and image processing is performed. After that, the defective product is sucked and discharged by the suction nozzle 227 installed on the downstream side of the second camera 207. Is done.

At the downstream end of the reversing belt 205, a chute 229 is arranged so that the work 1
05 to the pickup roller 231. The pickup roller 231 has a large number of recesses 23 on the circumferential surface.
1a are formed, and the workpieces 1 flowing along the chute 229 are accommodated one by one in the recess 231a. The pickup roller 231 rotates counterclockwise, and the work 1 at the highest position is moved by the measurement probe 233 to the work 1.
Is measured one by one, and the defective product is sucked and discharged by the suction nozzle 235. The work 1 that has passed the inspection is sent to the next work filling unit 300.

The work filling unit 300 includes a hopper 301 for accumulating a predetermined number of works 1 and dropping the work 1, and a hopper 301.
A bulk case 303 for accommodating a workpiece falling from
A transport belt 305 for transporting the bulk case 303 and a labeler 323 for attaching a barcode label 325 to the bulk case 303 are provided. Between the pickup roller 231 and the hopper 301, the counting hoppers 307, 3
09 are arranged, and the counting hoppers 307 and 309
11 and can be switched by a cylinder 313. Each of the counting hoppers 307 and 309 has a shutter (not shown) on the lower surface of each hopper.

For the work 1, first, a predetermined number of the work 1 is counted by the counting counter sensor 302,
When a predetermined number is accumulated in the counting hopper 307, a shutter (not shown) is opened and the work 1 is dropped onto the hopper 301. This is the quantity of the work 1 for one case of the bank case 303. At this time, the pickup roller 2
31 is temporarily stopped, the cylinder 313 is driven to move the counting hopper 309 immediately below the pickup roller 231, and then the pickup roller 231 is rotated again, and the work 1 is counted by the sensor 302 by a predetermined number and accumulated in the counting hopper 309. Is done.

The bulk case 303 is transported by the transport belt 305, and the sensor 315 detects the bulk case shutter 30.
After confirming that the lid 3a (bulk case lid) is closed, the hopper 301 is conveyed to the filling nozzle 301a of the hopper 301.
The positioning arm 3 is located immediately below the filling nozzle 301a.
17 positions the bulk case 303. After that, the bulk case shutter 303a is opened by the bulk case shutter opening / closing device 319 to be on standby, and the charging nozzle 3
By opening a shutter (not shown) at the end of 01a, a predetermined amount of the work 1 for one case of the bulk case 303 flows down from the hopper 301 to fill the bulk case 303, and then the bulk case shutter 303a is opened and closed by the bulk case shutter opening / closing device 319. Closes by the operation of. After the completion, the positioning arm 317 is released and the transport belt 305 is released.
To move the bulk case 303 downstream (from left to right in FIG. 1).
And the sensor 321 confirms that the bulk case shutter 303a is closed. Next, a bar code label 325 is affixed to the side surface of the bulk case 303 by the labeler 323, and the bulk case 303 is transported further downstream, packed in a predetermined manner, and shipped.

As described above, according to the above-described apparatus, the work 1 and the end face 1 are maintained while the work 1 is placed on the V-groove 201a formed on the transport belt 201 and the reversing belt 205.
Since the four surfaces c, 1d, 1e, and 1f can be inspected by two cameras, the work 1 can be inspected efficiently. Further, since the work 1 can be continuously inverted while being sandwiched by the V-grooves 201a formed on the transport belt 201 and the reversing belt 205, the work 1 can be easily inverted at a high speed without displacement, and the work size can be easily reduced. And end face 1
It is possible to perform high-speed image processing on c to 1f.

Further, in order to correspond to the work 1 of different size, V-grooves 201a corresponding to different sizes are formed in the same conveying belt 201 and the reversing belt 205 in a plurality of rows endlessly so as to correspond to works 1 of different sizes. May be switched to a V-groove that matches the work size. In the present embodiment, the V-shaped groove 201a is formed along the conveying direction of the belt.
The groove may be formed in a direction orthogonal to the belt conveyance direction. Also, the shape of the groove is not limited to the V groove,
Other shapes may be used.

In the above-described embodiment, a bulk case filling package has been described as a packaging form.
The work 1 may be attached to a carrier tape made of paper or plastic at a predetermined interval to form a carrier tape package for supplying the work 1.

FIGS. 7 and 8 are sectional views showing a second embodiment of the transport belt. A groove 202a having a rectangular cross section is formed in the conveyor belt 202, and the work 1 having a square cross section (a square in the embodiment) is placed in the groove 202a. Groove 20
The width W of 2a is shorter than the length d of the diagonal line of the rectangular cross section of the work 1, and the depth of the groove 202a is such that the corner 1g does not touch the bottom 202b of the groove 202a when the work 1 is fitted into the groove 202a. With dimensions of Therefore, when the work 1 is placed in the groove 202a, as shown in FIG. 7, the side surfaces 1e and 1f of the work 1 become the edges 202c and 202d of the groove 202a.
Point contact with each other.

The transport belt 202 is supported by a belt receiver 204 and moves on the belt receiver 204. The belt receiver 204 is connected to a vibrator (vibration device) 206 including a motor and the like. This vibrator 2
6, the conveyance belt 202 is vibrated, so that even when the work 1 is inclined and placed as shown by a chain line in FIG. 7, the posture of the work 1 is substantially changed by the vibration of the belt 202 as shown by a solid line in FIG. The work 1 is corrected so as to be bilaterally symmetric, and the end faces 1 c and 1 d of the work 1 can be uniformly photographed by the camera 203.

Although the vibrator 206 exhibits the effect of correcting the posture of the work 1 even when attached to the apparatus shown in FIG. 1, it is more preferable to use the vibrator 206 in combination with the structure shown in FIG. can get. That is, the groove 202a shown in FIG.
2d makes point contact with the end surfaces 1e and 1f of the work 1 respectively, and its corner 1g does not contact the bottom 202b of the groove 202a. Therefore, when the conveyor belt 202 is vibrated by the vibrator 206, the work 1
Is easily corrected to be symmetrical.

After the work 1 is photographed by the camera 203, as shown in FIG. 8, the work 1 is reversed while being sandwiched between the transport belt 202 and the above-described reversing belt 205A. This inversion method is the same as described above.

FIG. 9 shows another example of the conveying belts 208 and 210. The grooves of the conveying belt are semicircular grooves 208a as shown in FIG. 9A and grooves as shown in FIG. 9B. A groove 210a having a V-shaped cross section may be used. In short, it is sufficient that the corner 1g of the work 1 does not contact the bottom of the groove when the work 1 is fitted in the groove.

Next, a third embodiment of the present invention will be described with reference to FIGS. In the following description, the same reference numerals are used for the same or equivalent components as those in the first and second embodiments, and the description is omitted or simplified. In the third embodiment, transport belts 240 and 2 provided in at least two rows in the transport direction are provided.
It is characterized in that the work 1 is conveyed while being sandwiched between 41, and that the discharge of defective products and the extraction of non-defective products are performed by blowing compressed air.

FIG. 10 is a schematic diagram of a work inspection apparatus 20 according to the third embodiment. In this figure,
The work inspection device 20 is different from the structure of the work inspection device 10 (FIG. 1) according to the first embodiment in that the work 1 is transported while sandwiching the work 1 between the two rows of transport belts 240 and 241. Other than the first and second cameras 2
First and second defective product discharge units 24 for discharging the work 1 determined to be defective in 03 and 207 by blowing compressed air.
9, 250, and a non-defective product extracting unit 25 for transferring a non-defective product that has passed the inspection to the work filling unit 300 by blowing compressed air.
5 is provided. The other configuration is substantially the same as the configuration of the first embodiment.

The transport belts 240 and 241 are provided as shown in FIG.
As shown in FIG. 12 and FIG.
Are arranged so that the gap, that is, the mutual separation width (W), gradually decreases from the left side (left side) to the downstream side (right side in FIG. 12). That is, the mutual separation width (W) formed between the transport belts 241 and 242 is determined by the distance from the upstream S position in the transport direction (the work transfer portion 105 at the tip of the part feeder work alignment member 104) to the downstream P Position (first
(Near the upstream side of the camera 203). Here, as shown in FIG. 13, the separation width W1 at the most upstream (S) position in the transport direction is equal to the corner 1 of the workpiece 1.
g without contacting the bottom 245a, and
d, 1e are the inner upper corners 240 of each belt 240, 241.
The distance W1 may be any distance W1 that can be hooked between the a and 241a. In other words, at the most upstream (S) position in the transport direction,
While the separation width W1 is slightly smaller than the diagonal length d of the rectangular cross section of the work 1, the position (P) at the most downstream side in the transport direction (FIG. 1)
3 (B)), the separation width W2 is smaller than the separation width W1 at the upstream side (S) position. For this reason, at the most upstream (S) position in the transport direction (the work transfer section 105),
The work 1 from the work supply unit 100 is transported by the transport belt 24.
0, 241 and the mutual separation width W is gradually narrowed between the regions L along the transport direction, and at the same time, the vibrator 2 provided similarly to the second embodiment.
06 (vibration device) makes it possible to vibrate the transport belts 240 and 241 and to gradually correct the posture of the work 1 symmetrically in the left-right direction with the transport. The vibrator 206 is synchronized with the rotation of the conveyor belts 240 and 241, so that the posture of the work 1 can be corrected more reliably.

The first and second defective product discharge units 249, 2
Reference numerals 50 are provided at two locations downstream of the first and second cameras 203 and 207, respectively, while the non-defective product extracting portion 255 is provided at two locations downstream of the second defective product discharging portion 250. . Here, the first and second defective product discharging units 2
49, 250 and the non-defective product extracting section 255 are provided at two places, respectively.
This is an auxiliary device for ensuring that the work 1 can be taken out downstream when the work 1 cannot be taken out at each upstream side. In addition, the first and second defective product discharge units 249,
250 and the non-defective product extracting unit 255
0, 241, or a pipe 259 that crosses the work 1 conveyed by the reversing belt 205 at a right angle to the traveling direction.
(FIG. 14). In the duct 259 in the first defective product discharge section 249, an opening 261 large enough to allow the work 1 to pass is formed at a position above the transport belts 240 and 241. Similarly, the second defective product discharge section Similar openings 261 are also formed in the conduit 259 of the non-defective product extraction section 255 and 250. Compressed air A is sent into the pipe 259 from a compressed air generator (not shown) such as a compressor. Also,
The compressed air A is controlled by a control circuit (not shown), and the compressed air A supplied from the pipe 259A is further compressed by the small-diameter pipe 259B and injected into the large-diameter pipe 259C, so that the compressed air A is supplied to the opening 261. A negative pressure is generated, and the workpiece 1 is sucked by the suction force generated in the opening 261 by the negative pressure, guided into the large-diameter pipe 259 </ b> C from the opening 261, and out of the transport belts 240, 241 or the reversing belt 205. It is designed to be discharged or extracted. That is, in the first defective product discharge unit 249, when a certain work 1 is determined to be defective by the inspection of the first camera 203, the small-diameter pipe 259 is shifted at a timing shifted according to the transfer speed of the work 1.
B, compressed air A is injected into the large-diameter pipe 259C, thereby generating a negative pressure (suction force) in the opening 261.
The work 1 determined to be defective located in the opening 261 is guided into the large-diameter pipe 259C. Meanwhile, the first
Work 1 not determined to be defective by inspection of camera 203
Is transported toward the second camera 207 on the downstream side without blowing the compressed air A. Further, in the second defective product discharge unit 250, the first camera 203 scans the back surface of the work 1 that has been inverted by approximately 180 degrees by the halfway inversion belt 205.
Is performed by the second camera 207, and as a result,
Only for the work 1 determined to be defective, the work 1 is guided into the large-diameter pipe 259C by the same operation as that of the above-mentioned first defective product discharge section 249. And the non-defective product extraction unit 2
At 55, the compressed air A is fed into the pipe 259 almost all the time, and the second defective product discharging section 2
All the workpieces 1 that have not been discharged at 50 are extracted and supplied to the hopper 301 (FIG. 10). Less than,
In FIG. 10, components having the same reference numerals as those in FIG. 1 repeat the same operations as those in FIG. 1, count a predetermined number of works 1, fill the bulk case 303, and further apply a predetermined label. Discharge outside.

In the third embodiment, the reversing belt 205 may be constituted by two rows of belts capable of sandwiching the work 1 or the belt having the grooves described in the first and second embodiments. Of course, it may be constituted by.

In the first to third embodiments, the work 1 is a ceramic chip capacitor, but may be a hexahedron such as a chip resistor.

[0040]

As described above, according to the present invention,
Since a groove was formed in the belt, the work was placed in the groove and the two end faces of the work were inspected at the same time, and the work was sandwiched and continuously inverted by a grooved reversing belt. Inspection can be speeded up as compared with the intermittent inversion method.

Further, the work is placed and transported in the gap between the two belts, is gradually narrowed toward the downstream side in the transport direction, and is further transported while vibrating the belt. Posture can be corrected.

[Brief description of the drawings]

FIG. 1 is a side view of a work inspection device according to a first embodiment of the present invention.

FIG. 2 is a plan view of the workpiece inspection device.

FIG. 3 is a perspective view of a work.

FIG. 4 is a perspective view showing a state of conveying a work.

FIG. 5 is a cross-sectional view of a step of inspecting a workpiece with a camera.

FIG. 6 is a cross-sectional view taken along the line II-II of FIG.

FIG. 7 is a sectional view showing a second embodiment of the transport belt.

FIG. 8 is a sectional view showing a second embodiment of the transport belt and a reversing belt.

FIG. 9 is a cross-sectional view illustrating still another example of the transport belt.

FIG. 10 is a side view of a work inspection device according to a third embodiment.

FIG. 11 is a perspective view showing a conveyor belt according to a third embodiment together with a work.

FIG. 12 is a plan view showing a transport belt according to a third embodiment together with a work.

13A is a cross-sectional view at an upstream S position in FIG. 12, and FIG. 13B is a cross-sectional view at a downstream P position and a first camera position in FIG.

FIG. 14 is a cross-sectional view schematically illustrating a defective product discharging unit and a non-defective product extracting unit according to a third embodiment.

[Explanation of symbols]

Reference Signs List 1 work 10, 20 work inspection device 100 work supply unit 101 parts feeder 200 work inspection unit 201, 202, 208, 210, 240, 241 transport belt 201a V groove 202a, 208a, 210a groove 203 first camera 204, 243 belt receiver 205 Reversing belt 206 Vibrator 207 Second camera 231 Pickup roller 233 Measurement probe 249 First defective product discharge unit 250 Second defective product discharge unit 255 Good product extraction unit 259 Pipe line 300 Work filling unit 301 Hopper 302 Counter sensor 303 Bulk case 305 Conveying belts 307, 309 Counting hopper A Compressed air W Separation width (gap) W1, W2 Separation width (gap)

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G01N 21/84 G01B 21/00 H // G01B 21/00 B65G 47/22 Z F term (Reference) 2F065 AA21 AA49 CC25 FF04 JJ03 JJ05 JJ19 JJ26 MM03 PP11 PP15 QQ31 TT01 TT03 TT07 2F069 AA31 AA60 BB13 DD15 GG07 GG58 HH30 JJ11 MM02 PP07 RR01 2G051 AA90 AB02 CA04 CA07 DA01 CA13 BA13 DA0 DA13 DA20 DA13 DA20 AA22 BB03 BC01 BE03 BE09 BF15 CA30 CC08 CC10 CC18 CD01 DB01 EA09 EA10 EA15

Claims (9)

[Claims] 1. A work inspecting apparatus, wherein a groove is formed in a conveying belt, a work is placed in the groove and conveyed, and an exposed surface of the work is imaged and inspected. 2. A work is placed and conveyed in a gap formed between at least two conveying belts, and the gap is gradually narrowed toward the downstream side in the conveying direction to change the posture of the work. A work inspection device provided so as to be able to be corrected. 3. A reversing belt that partially contacts the transport belt, wherein the reversing belt is formed with a groove corresponding to the groove or the gap, and the work is transferred from the transport belt to the reversing belt. The work inspection apparatus according to claim 1, wherein the work is reversed by the operation. 4. The work inspection apparatus according to claim 1, further comprising a vibration unit that vibrates the transport belt. 5. The groove according to claim 1, wherein said groove is V-shaped.
A work inspection device according to item 1. 6. A camera according to claim 3, further comprising: a first camera that captures an image of an exposed surface of the work placed on the transport belt, and a second camera that captures an image of the exposed surface of the work inverted by the reversing belt. Work inspection equipment. 7. On the downstream side of the first and second cameras,
A defective product discharge unit capable of discharging a work determined to be defective in the inspection of each camera is provided, and the defective product discharge unit is provided so that the work can be discharged by blowing compressed air. The work inspection apparatus according to claim 6, wherein 8. A non-defective product extracting unit for sending a non-defective product that has passed the inspection of the first and second cameras to a work filling unit, and the non-defective product extracting unit is provided so that the non-defective product can be discharged by blowing compressed air. The workpiece inspection device according to claim 6, wherein the workpiece inspection device is configured to perform the inspection. 9. A workpiece inspection apparatus for forming a groove in a transport belt, placing a workpiece in the groove, transporting the workpiece, and imaging and inspecting an exposed surface of the workpiece, wherein a vibration for vibrating the transport belt is provided. Means, the workpiece has a rectangular cross-sectional shape, the width of the groove is shorter than the length of the diagonal of the square,
The work inspection apparatus according to claim 1, wherein the depth of the groove has such a size that a corner of the work does not touch a bottom of the groove when the work is placed in the groove.