MXPA01004151A

MXPA01004151A - Work inspection device.

Info

Publication number: MXPA01004151A
Application number: MXPA01004151A
Authority: MX
Inventors: Kenji Kobayashi
Original assignee: Lintec Corp
Priority date: 1999-11-22
Filing date: 2000-11-21
Publication date: 2002-06-21
Also published as: CN1322155A; IL144414A0; KR20010083922A; WO2001038013A1; JP2001327929A

Abstract

A work inspection device wherein a conveyor belt (201) is formed with a Vgroove (201a) and work (1) is placed in the Vgroove (201a) and conveyed, during which conveyance the size of the work (1) and its two adjacent surfaces (1c, 1d) are inspected by a first camera (203). Further, a reversing belt (205) abuts against the conveyor belt (201), the reversing belt (205) being likewise formed with a Vgroove (205a), so that the work (1) is continuously reversedly transferred from the conveyor belt (201) to the reversing belt (205) while being held between the conveyor belt (201) and the reversing belt (205), and the reversed work (1) has its two other adjacent surfaces (1e, 1f) inspected by a second camera (207). After inspection, the capacity of capacitors is measured by a measuring probe (233) and upon completion they are counted off into groups of a fixed number which are then packed each in a bulk case (303).

Description

APPARATUS FOR THE INSPECTION OF WORK PIECES FIELD OF THE INVENTION The present invention relates to an apparatus for the inspection of work pieces for inspecting an end face of a work piece.

DESCRIPTION OF THE PREVIOUS TECHNIQUE A device disclosed in Japanese Patent Publication (open to the public) No. HEI 9-315566 is known as an apparatus for the inspection of workpieces. This device is a device for inspecting end faces of a hexahedron when it is a work piece, and is provided with a first circular plate having a plurality of first concave portions formed on the periphery, for holding the work piece, and a second circular plate arranged orthogonally with respect to this first circular plate and having a plurality of second concave portions formed in the periphery, to receive and hold the workpiece of the first concave portion. In addition, a first inspection chamber of the end face for inspecting three faces of the work piece is provided to the outside of the first circular plate, and a second inspection chamber of the end face for inspecting the three remaining faces of the end face. the work piece is provided towards the outside of the second circular plate. In the apparatus for inspection of workpieces disclosed in the previous publication, the workpiece is inspected by holding the concave portion formed in the circular plate. As a result, the rotation of the circular plate must stop when the workpiece is inserted and when the workpiece is removed from the circular plate and inspection of the work piece is limited while it is being transported at a high speed. In view of the above problem, it is an object of the present invention to improve the speed of inspection of a work piece in accordance with an inspection apparatus.

EXPOSITION OF THE INVENTION To solve the problem, in the present invention, a device for inspecting the work piece is constructed with a groove formed in a conveyor belt, wherein the work piece is placed in the groove and inspected by means of the formation of the image of the exposed face of the work piece. Furthermore, in the present invention, the work piece is placed and transported in a free space 52/117 , f? * formed between at least two conveyor belts. The space is narrowed gradually to the downstream side of the transport direction, so that the posture of the work piece can be corrected. A tumbling belt is also provided, from which a portion protrudes against the conveyor belt. In this turning band, a groove opposite to the aforementioned groove is formed. The workpiece is turned over by transferring it from the conveyor belt to the tipping belt. Vibration means are provided to vibrate the conveyor belt which causes the posture of the work piece positioned on the conveyor belt to be corrected. The aforementioned slot can be in the form of V. In addition, a first camera is provided for forming images of the exposed faces of the workpiece placed on the conveyor belt and a second chamber for forming images of the exposed faces of the workpiece that was turned over by the flip band. Here, a portion for removal of unacceptable product, which is capable of removing a work piece that is judged as not acceptable by inspection with each chamber, is provided respectively on the downstream sides of the first and second chambers. These portions for the removal of unacceptable product are constructed to fix the work piece so that it can be removed by blowing compressed air. Portions for extracting acceptable product are also provided for sending non-acceptable work pieces that have passed the inspection of the first and second chambers to a portion for containing the work piece. These acceptable product extraction portions are also constructed to arrange the work piece so that it can be removed by blowing compressed air. further, in the present invention, the apparatus for the inspection of a work piece which is provided with a slot in the conveyor belt, and which places and transports a work piece in this slot, and inspects by means of imaging, the surfaces exposed from a work piece, is provided with vibration means to vibrate the conveyor belt. The workpiece has a rectangular cross section. The width of the slot is shorter than the length of the diagonal of the rectangle, and the slot has a depth dimension such that a corner of the workpiece does not contact the 52/117 bottom of the slot when the workpiece is placed in the slot.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a side view of an apparatus for the inspection of a work piece according to a first embodiment of the present invention. Figure 2 is a plan view of an apparatus for the inspection of a work piece. Figure 3 is a perspective view of the work piece. Figure 4 is a perspective view showing the manner in which the work piece is transported. Figure 5 is a sectional view of the process for inspecting the work piece with a camera. Figure 6 is a sectional view showing the manner in which the workpiece is sandwiched and flipped over by the conveyor belt and the tipping belt, taken along line II-II of Figure 1. Figure 7 is a sectional view showing a second mode of the conveyor belt. Figure 8 is a sectional view showing a second embodiment of the conveyor belt and the tipping belt.

Figure 9 is a sectional view showing another modified example of the conveyor belt. Figure 10 is a side view of an apparatus for the inspection of a work piece, according to a third embodiment. Figure 11 is a perspective view showing a conveyor belt in accordance with the third embodiment, together with a work piece. Figure 12 is a plan view showing a conveyor belt in accordance with the third embodiment together with a work piece. Figure 13 (A) is a sectional view in the upstream side S position of Figure 12. Figure 13 (B) is a sectional view in the downstream side P position of Figure 12 and the position of the first camera. Figure 14 is a typical sectional view to illustrate a portion for the removal of unacceptable product and a portion for the extraction of the acceptable product, according to the third embodiment.

BEST MODE FOR WORKING THE INVENTION The present invention will be described with reference to the drawings. Figures 1 and 2 show an apparatus 10 for the inspection of a work piece, which is a first embodiment of the present invention. This device inspects the dimensions and the four end faces (le, Id, le, lf) of a workpiece 1 (capacitor of small ceramic fragments) as shown in Figure 3. Workpiece 1 is a hexahedron of approximately 1 mm X 0.5 mm X 0.5 mm, for example, with two opposite faces, Ib, which are electrodes. The apparatus 10 for inspection of the workpiece according to the present invention, inspects the dimensions of the workpiece 1, as well as the presence of imperfections, discolorations and damage of the molded portions (dielectric portions) with the cameras 203 , 207. As shown in Figure 1, the apparatus 10 for the inspection of workpieces comprises a portion 100 for supplying the workpieces for aligning and supplying the workpiece 1, a portion 200 for the inspection of the workpiece. workpiece to inspect the dimensions of the workpiece 1 as well as to inspect the quality of the four remaining faces other than the electrodes, and a portion 300 to hold the workpiece and count the number of workpieces 1 that have completed the inspection and to pack the work pieces 1 counted in a box.

A parts feeder 101 is provided with the workpiece supply portion 100. Several workpieces 1 inserted in the ball portion of this piece feeder 101 are supplied one by one to the path 103 of the conveyor and at the same time are aligned and transported in a spiral conveyor slot. As a parts feeder 101, this feeder can be adopted as disclosed in Japanese Patent Publication (open to the public) No. HEI 5-286549, for example. The workpiece 1 is pushed towards the path 103 of the conveyor by the parts feeder 101 so that the electrodes Ia, Ib are placed one after the other in the direction of the transport and are sent to the inspection portion 200 of the Workpiece. The inspection portion 200 of the work piece is provided with an endless conveyor belt 201 for transporting the workpiece 1, a first camera 203 for image formation of the workpiece 1 transported on the conveyor belt 201, a tipping belt 205 abutting against the conveyor belt 201 and a second camera 207 for forming images of the work piece 1 on the tipping belt 205. The conveyor belt 201 turns around between a drive pulley 209, a driven pulley 211 and a tension pulley 213. The driving pulley 209 is rotated by a motor 215. As shown in Figure 4, an endless V-shaped slot 201a is formed in the center of the transportation surface of the motor. the conveyor belt 201 in the direction of transportation (left to right in Figure 4) of the conveyor belt 201. As shown in Figure 4, the work pieces 1 are placed one after from the other in the V-slot 201a from the transportation route 103 with the electrodes la, Ib in the front and rear. At this time, the terminal faces 1, 1 of the workpiece 1 are placed in abutting connection with the groove face of the V-groove 201a, and the other opposite end faces 1, 1 are exposed. These end faces, which are exposed, are subjected to image formation with the first chamber 203. The outer dimensions of the workpiece 1, as well as the fractures, imperfections, discolorations and spatter of silver paste and the like of the faces end, Id are inspected through the image formation processing using output signals from this first camera 203. On the upstream side of the first camera 203 is provided a photo detector 217 for detecting a workpiece that is going. The 52/117 timing of the photograph of the first camera 203 is determined based on a detection signal of the photo detector 217, and the image forming processing of the dimensions of the workpiece and of the inspected faces is performed. , Id. Also, on the downstream side of the first chamber 203 is provided a suction nozzle 219. The work pieces 1 which are judged as unacceptable by inspection with the first chamber 203 are sucked and removed by the nozzle suction 219. The tipping belt 205 (Figure 1) turns around on a pulley 209. A V-shaped slot 201a, similar to the V-shaped groove formed on the conveyor belt 201, is formed on the tipping belt 205 and, as shown in Figure 5, a portion of the tipping belt 205 abuts against a portion of the conveyor belt 201 to sandwich the work piece 1. That is, as shown in Figure 1, the conveyor belt 201 and the ban The tumbling belt 205 is in abutment connection about substantially half the circumference of the pulley 209. The tumbling belt 205 turns over a variety of pulleys 221, 222. The pulley 222 is rotationally driven by a motor drive (not shown) in synchrony with the conveyor belt 201. The workpiece 1 is transferred from the conveyor belt 201 to the tipping belt 205 when it is rotated approximately 180 degrees by the pulley 209 while it is being walled in the slot at V 201a of the conveyor belt 201 and the V-groove 201a of the tipping belt 205. On the tipping belt 205, the end faces le, lf of the workpiece 1 that is turned over and transferred from the slot at V 201a of conveyor belt 205 is exposed. In the vicinity of the periphery of the lower side of the pulley 209, a scraper 225 is provided which prevents the workpiece 1 from returning back to the conveyor belt 201. As a result, the workpiece 1 is reliably transferred to the tipping belt 205. A second chamber 207 is arranged on the downstream side of the scraper 225. The dimensions of the workpiece 1, as well as the fractures, imperfections, discolorations and spatters of silver paste and the like of the faces of end, lf are inspected through the image formation processing with this second camera 207. Also, the timing of the photography of the second camera 207 is such that the workpiece 1 is detected using a photo detector (not shown ) arranged on the upstream side thereof, similar to the arrangement made with the first camera 203. After the image formation processing, the products not acceptable they are sucked and removed by 52/117 a suction nozzle 227 arranged on the downstream side of the second chamber 207. A gutter 229 is provided at the downstream end of the tipping belt 205, by means of which the workpiece 1 is transferred from the tipping belt 205 towards the take-up roll 231. A variety of concave portions 321a are formed on the circumferential face of the take-up roll 231. The work pieces 1 that have descended along the gutter 229 are carried one by one in these concave portions 231a. The take-up roller 231 rotates in a clockwise direction and when the work piece is in the most upward position, the measurements of the condensing capacity of the work piece 1 are taken by means of a measuring probe 233, and the Unacceptable products are sucked and removed with the suction nozzle 235. The work pieces 1 that passed the inspection are then sent in the portion 300 to contain the work piece. The portion 300 for containing the work piece is provided with a hopper 301 for accumulating and dropping a certain number of work pieces 1, a stevedoring box 303 for transporting the work pieces that were dropped from the hopper 301, a conveyor belt 305 for transporting the stevedoring box 303 and a labeler 323 for adhering a bar code label 325 to the stevedoring box 303. Counterboots 307, 309 are provided between the take-up reel 231 and the hopper 301. The counterbores 307 , 309 are connected by means of a connection plate 311 to be able to be switched by means of a cylinder 313. Each counterbore 307, 309 is also provided respectively with a register, not shown, at the bottom thereof. A predetermined number of workpieces 1 is counted by a counter detector 302. When the predetermined number is accumulated in the counterbore 307 the register, not shown, is opened and the workpieces 1 are dropped in the hopper 301. This becomes the number of work pieces 1 for a box of the stevedoring box 303. At this time, the take-up roller 231 stops rotating temporarily and the cylinder 313 is driven so that the counter-boom 3089 moves directly below of the take-up roller 231. The take-up roll 231 then rotates again and the predetermined number of work pieces 1 is counted with the detector 302 and is accumulated in the counter-boom 309. The stevedoring box 303 is transported with a conveyor belt 305 towards a filling nozzle 301a of the hopper 301 after confirming with a detector 315, that the register of the stevedoring box 303a (the lid of the stevedoring box) is closed. A positioning arm 317 52/117 positions the stevedoring box 303 directly below the filling nozzle 301a. Then, the register 303a of the stevedoring box is opened by means of an opening / closing device 319 of the stevedoring box register and is left waiting. A record, not shown, of an end portion of the filling nozzle 301a is opened so that the predetermined number of work pieces 1 for a box of a stevedoring box 303 flows down from the hopper 301 to fill the stevedoring box 303. Then the register 303a of the stevedor box is closed by activating the opening / closing device 319 of the stevedoring box register. After completion, the positioning arm 317 is released and the stevedoring box 303 is transported to the downstream side (from left to right in Figure 1) by the conveyor belt 305. Halfway, a detector 321 confirms that the registration 303a of the stevedoring box is closed. Then, a bar code label 325 adheres to the side face of the stevedoring box 303 by the labeling means 323. The stevedoring box 303 is further transported downstream where it is packed as prescribed and shipped. As stated above, according to the device mentioned in the above, the dimensions of the workpiece and its four faces will, Id, le, lf, 52/117 can be inspected with two chambers, while the workpiece 1 is placed in the V-slots 201a formed in the conveyor belt 201 and in the tipping belt 205. As a result, the workpiece 1 can be inspected efficiently. In addition, because the workpiece 1 can be continuously flipped while being sandwiched by the V-slots 201a formed in the conveyor belt 201 and the tipping belt 205, it is possible to overturn them at high speed without the workpiece 1 being it slides out of its position and it is possible to process high-speed image formation of the dimensions of the workpiece and its end faces le to lf. In addition, several endless V-shaped slots 201a of different sizes to correspond to the work pieces 1 of different sizes, can be formed on an identical conveyor belt 201 and a tipping belt 205, and the conveyor path 103 can be walled with the V groove that matches the size of the work piece. Also in this embodiment, the V-groove 201a is formed in the direction of the conveyance of the band, but is not limited thereto. The V-groove can also be formed orthogonally with respect to the conveyance direction of the band. Moreover, the shape of the groove is not limited to a form in 52/117 V, but may also have other conformations, such as in a sectioned semicircle. In the previous mode, the packing and filling of the stevedoring box was described as a way of packing, but the way of packing is not restricted to this mode. Packaging with packaging tape can also be used to supply the work piece 1, wherein the work pieces 1 can be attached at predetermined intervals in a paper or plastic packing tape. Figure 7 and Figure 8 are sectional views showing a second embodiment of the conveyor belt. A slot 202a having a rectangular cross section is formed in a conveyor belt 202. The workpiece 1 having a rectangular cross section (square in the mode) is placed in this slot 202a. The width of the slot 202a is shorter than the length d of the diagonal of the rectangular cross section of the workpiece 1. The slot 202a has a depth such that a corner portion lg of the workpiece 1 does not contact with the bottom 202b of the slot 202a when the workpiece 1 fits into the slot 202a. Consequently, when the workpiece 1 is placed in the slot 202a, the side faces 1, 1 of the workpiece 1 contact the edges 202c, 202d, respectively, of the slot 202a, as shown in Figure 7. The conveyor belt 202 is supported by a receiver 204 of the web. on which it moves. A vibrator 206 (vibration device) comprising a motor and the like, is connected to the band receiver 204. This vibrator 206 vibrates the conveyor belt 202 so that, even if the work piece 1 placed at an angle, as shown by the broken line in Figure 7, the posture of the work piece 1 is corrected to remain substantially laterally symmetric, as shown by the solid line in Figure 7, so that the end faces Ie, Id of the workpiece 1 can be photographed uniformly with the camera 203. The vibrator 206 displays an effect for correcting the posture of the workpiece 1 even though it is attached to the device of Figure 1. More preferably, however, an even greater effect is obtained by using it in combination with the structure in a manner shown in Figure 7 That is, the slot 202a shown in Figure 7 makes contact with the end faces 1, 1f of the workpiece 1 with two edges 202c, 202d, respectively, and the corner portion lg. 52/117 does not contact the bottom portion 202b of the slot 202a. As a result, when the conveyor belt 202 is vibrated by the vibrator 206, the posture of the work piece is easily corrected to be laterally symmetrical by that vibration. Then, the workpiece 1 is photographed with the camera 203, the workpiece 1 is then flipped while being walled by the conveyor belt 202 and the flip band 205A as shown in Figure 8. This method of flipping is similar to the one described in the previous. Figure 9 shows an example of different conveyor belts 208, 210. As a groove in the conveyor belt, a semicircular groove 208a may also be used as shown in Figure 9 (A) or a V-shaped groove 210a, in section cut, as shown in Figure 9 (B). That is, any shape can be used as long as the corner portion lg of the workpiece 1 does not contact the bottom portion of the slot when the workpiece l fits into the slot. Next, a third embodiment of the present invention will be described with reference to Figures 10 to 14. Note that, in the description that follows, the structural portions that are identical or equivalent to those of the aforementioned first and second embodiments , they will be named with the same reference numbers and that the description will be omitted or simplified. This third embodiment is characterized in that the workpiece 1 is transported while being sandwiched between the conveyor belts 240, 241 provided in at least two lines in the direction of transportation. It is also characterized in that the withdrawal of unacceptable products and the extraction of acceptable products are carried out by blowing compressed air. Figure 10 shows a schematic view of an apparatus 20 for inspection of the work piece according to the third embodiment. In this figure, the apparatus 20 for the inspection of the workpiece differs in construction, from the apparatus 10 for the inspection of a workpiece (Figure 1), according to the first embodiment mentioned above, in which the workpiece Work 1 is transported while being sandwiched between two aligned conveyor belts 240, 241, first and second portions 249, 250 are provided for removal of unacceptable products, to remove a work piece 1 that has been judged as not acceptable by the first and second chambers 203, 207 by blowing compressed air, and a portion 255 for extraction of acceptable product is provided for carrying the products 52/117 that have passed the inspection, towards the filling portion 300 of the workpiece by blowing compressed air. Note that the other construction of the same is practically the same as that of the first mode. The conveyor belts 240, 241 are arranged so that the space or width (W) between the two becomes gradually narrower from the upstream side in the direction of transportation (left side in Figure 12) to the downstream side ( right side in Figure 12) thereof, as shown in Figures 11 and 12. That is, the width () formed between both conveyor belts 241, 242 gradually become narrower from the upstream side S position in the transport direction thereof (the area of the transfer portion 105 of the workpiece at the tip of the alignment member 104 of the workpiece of the parts feeder) to the downstream side position P (near the first lateral chamber 203 upstream). Here, as shown in Figure 13, the width Wl at the current side position (S) upstream in the direction of transportation can be any width while allowing each end face Id, of the workpiece 1 hang between the upper inner corners 240a, 241a of both bands 240, 241 without the corner portion Ig of the workpiece 1 making contact with the bottom portion 245a. In other words, the width Wl becomes slightly narrower than the diagonal length d of the rectangular cross-section of the workpiece 1 in the lateral position (S) current upstream in the direction of transport, while the width W2 is it becomes narrower than the width Wl of the lateral position (S) upstream in the lateral (P) position downstream in the direction of transportation (Figure 13 (B)). Consequently, in the lateral position (S) most upstream in the direction of transportation (the area of the transfer portion 105 of the workpiece), it becomes easier to supply and transfer the workpiece 1 from the portion 100 of supply of the workpiece to the conveyor belts 240, 241. Also, while the width W between the two gradually becomes narrower in the region L in the direction of transportation, the conveyor belts 240, 241 are vibrated by a vibrator 206 (vibration device) provided as in the second embodiment. As a result, the posture of the work piece 1 can be slowly corrected to remain laterally symmetrical while being transported. Note that this vibrator 206 is in synchrony with the rotation of the conveyor belts 240, 241, so that the 52/117 correction of the posture of the work piece 1 can be carried out more reliably. The first and second portions 249, 250 for removal of non-acceptable product, are provided in two places, each on the downstream sides of the first and second chambers 203, 207, respectively, while the portion 255 for product extraction acceptable is provided in two places on the downstream side of the second portion 250 for removal of the unacceptable product. This is an auxiliary means wherein the portion 255 for extraction of the acceptable product together with the first and second portions 249, 250 for removal of the acceptable product, are provided in two places each for the most reliable removal of the work piece 1 on the downstream side in the unlikely event that a corresponding workpiece 1 could not be removed on both sides upstream. Also, the portion 255 for extraction of the acceptable product together with the first and second portions 249, 250 for removal of the unacceptable product are provided with a passage 259 (Figure 14) that cuts transverse at a practically right angle with respect to to the direction of the progression above a workpiece 1 to be carried by the conveyor belts 240, 241 or by the tipping belt 205. The passage 259 in the first portion 249 for removal of the unacceptable product has an opening 261 large enough for the workpiece 1 to pass therethrough formed at a position above the conveyor belts 240, 241. Likewise, a similar opening 261 is also formed in the passageway 259 in the second portion 250 for removal of unacceptable product and portion 255 for extraction of acceptable product. In addition, the compressed air A can be sent to the interior of the passage 259 from a compressed air generating device (for example a compressor), which is not shown. Moreover, that compressed air A is controlled by means of a control circuit (not shown), so that the compressed air A supplied by the supply passage 259A is further compressed by a passage 259B of small diameter and injected into a passageway. 259C of large diameter to generate a negative pressure in the opening 261. This negative pressure sucks the workpiece 1 with suction force generated in the opening 261 and leads it from the opening 261 into the interior of the large diameter passage 259C so which is removed or removed from the conveyor belts 240, 241 or by the tipping belts 205. That is, in the first portion 249 for removal of unacceptable product, if a work piece 1 is judged as not acceptable by the inspection with the first chamber 203, compressed air A is injected 52/117 from the small diameter passage 259B to the large diameter passage 259C at a timing offset to match the transfer speed of the workpiece 1. As a result, negative pressure (suction force) is generated in the opening 261 so that the work piece 1 judged to be unacceptable that is positioned in the opening 261 is led to the large diameter passage 259C. On the other hand, a workpiece 1 not judged as not acceptable by inspection with the first chamber 203 is transported as it is in the direction of the second chamber 207 on the downstream side without blowing compressed air A. Also, in the second portion 250 for removal of the unacceptable product, the underside of the workpiece 1 that has been turned in the middle of the way by approximately 180 degrees with the tipping band 205 is inspected with the second chamber 207 in a shape similar to that of the first chamber 203. As a result, only one work piece 1 that is judged as not acceptable is driven to the large diameter passage 259C by the same operation as for the first portion 249 for product removal. not acceptable, mentioned in the above. Then, in the portion 255 for the extraction of acceptable product, the compressed air A is fed to the passage 259 almost constantly so that all the work pieces 1 52/117 that were not removed by the second portion 250 for removal of unacceptable product are removed and fed to the hopper 301 (Figure 10). In the following, in Figure 10, the structural elements denoted by the same reference number of Figure 1 repeat the same operations as in Figure 1: count a predetermined number of work pieces 1, fill them with a stevedoring box 303 and also, adhere a specified label and remove them from the machine. Note that in the third embodiment, the tipping belt 205 can also be formed by two aligned bands that can sandwich the work piece 1, or that can of course be formed of a band having a slot described in the first and in the second modality. Note that in the first to third embodiments, the workpiece 1 was a capacitor of small ceramic fragments, although it can also be any six-sided object, for example a small fragment resistor. As described in the above, in accordance with the present invention, a groove is formed in a band. The workpieces are then placed in that slot so that two end faces of the workpiece can be inspected simultaneously. Further, 52/117 the slotted flip band walls the work pieces and flips them continuously, making it possible to perform the inspection at high speed compared to the conventional intermittent flip method. Also, the work pieces are placed and transported in a space between two bands, the width between the two gradually becoming narrower towards the downstream side in the direction of transportation. In addition, the work pieces are transported while the band is vibrated. As a result, the posture of the work pieces can be corrected while they are being transported.

APPLICABILITY IN THE INDUSTRY The present invention can be applied as a device for determining the quality by the imaging of an exposed face of a workpiece, such as, for example, a capacitor of small ceramic fragments. 52/117

Claims

CLAIMS; An apparatus for the inspection of a work piece, characterized in that a groove is formed in a conveyor belt, a work piece is placed and transported in the groove, and the exposed faces of the work piece are subjected to the formation of images and are inspected. 2. An apparatus for the inspection of a work piece, characterized in that a work piece is placed and transported in a space formed between at least two conveyor belts, the width of the space gradually becomes narrower towards a running side down in the direction of the transportation of the same, and you can correct the position of the piece of work. An apparatus for the inspection of a workpiece according to claim 1 or 2, wherein a tumbling band is provided, a portion of which abuts against the conveyor belt and a slot corresponding to the slot or space It is formed in the flip band, which transfers the work piece from the conveyor belt to the flip band, thereby turning the work piece over. 4. An apparatus for the inspection of a workpiece according to any of claims 1 or 2, provided with vibration means for vibrating the 52/117 conveyor belt. 5. An apparatus for the inspection of a workpiece according to claim 1 or 3, wherein the slot has the shape of V. 6. An apparatus for the inspection of a workpiece according to claim 3, provided with a first camera for forming images of the exposed faces of the work piece placed on the conveyor belt, and a second camera for forming images of the exposed faces of the workpiece that have been turned over by the tipping band. 7. An apparatus for the inspection of a workpiece according to claim 6, characterized in that it includes a portion for the removal of unacceptable product, which can remove the work pieces that are considered unacceptable by the two corresponding chambers; the portion is provided on a downstream side of the first and second chambers, respectively and is provided for removing the workpiece by blowing compressed air. 8. An apparatus for the inspection of a workpiece according to claim 6 or 7, characterized in that a portion for the extraction of acceptable product is included, in order to send a workpiece of an acceptable product that has passed the 52/117 inspection of the first and second chambers towards a portion for containing the workpiece, wherein the portion for extracting acceptable product is provided for removing the workpiece by blowing compressed air. 9. An apparatus for the inspection of a workpiece wherein a slot is formed in a conveyor belt, a workpiece is placed and transported in the slot and the exposed faces of the work piece are subjected to imaging and are inspected, characterized in that vibration means are provided for vibrating the conveyor belt, and wherein the work piece has a rectangular cross section, and wherein a width of the groove is shorter than a diagonal length of the rectangle. , and a dimension of the depth of the slot is such that a corner portion of the workpiece does not contact a portion of the bottom of the slot when the workpiece is placed in the slot.
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