KR20090005516A - Vision inspecttion apparatus - Google Patents

Abstract

A vision inspection apparatus is provided to improve productivity by automatically ejecting defective articles using a suction nozzle and inspect all the palettes without omission. A vision inspection apparatus comprises a main body, a transfer rail(130) for loading and transferring a palette(50) containing an inspection object, a camera(140) scanning the object contained in the palette, a display unit(122) showing the image scanned by the camera, a suction nozzle(166) which sucks defective object and ejects it to outside, a first movement prevention member supporting the palette, and a second movement prevention member(175) which is installed opposite to the first flow prevention member. Each movement prevention member includes a pair of arms, a support rod, and a roller.

Description

Vision Inspection Device {VISION INSPECTTION APPARATUS}

1 is a perspective view of a vision inspection apparatus according to an embodiment of the present invention.

2 is an enlarged view of a portion “A” of FIG. 1.

3 is an enlarged view of a portion “B” of FIG. 1;

4 is a schematic front view of a state in which the front plate of the main body shown in FIG. 1 is removed.

5a to 5k are views showing the operation of the vision inspection apparatus according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

110: main body 120: control unit

122: display unit 130: transfer rail

140: camera 166: suction nozzle

171: 175: first and second flow preventing member 193: roller group

195 gear

The present invention relates to a vision inspection apparatus for inspecting a defect by scanning a plurality of articles received in a pallet with a camera.

In the conventional vision inspection apparatus for inspecting whether a plurality of articles received and transported in a pallet are defective, a portion of the article to be inspected is inserted into the plurality of receiving grooves formed on the upper surface of the pallet, and the upper side of the pallet is upward. Camera scans the area of the article to be inspected.

Then, the part of the article to be scanned scanned by the camera is displayed on the display unit, and the image displayed on the display unit is analyzed to determine whether the article is defective. Then, the worker finds the article determined to be defective in the display unit on the pallet and manually removes it.

However, the conventional vision inspection apparatus as described above has a disadvantage in that productivity is lowered and inconvenient because an operator manually removes an article determined as defective.

The present invention was created to solve the problems of the prior art as described above, and an object of the present invention is to provide a convenient vision inspection apparatus as well as to improve productivity by automatically discharging the goods determined to be defective. .

Vision inspection apparatus according to the present invention for achieving the above object, the main body; A transport rail which penetrates the inside of the main body from the outside of one side of the main body and is installed toward the outer side of the other side of the main body and is loaded with a pallet containing an article to be inspected; A camera installed inside the main body so as to be movable in a direction perpendicular to a conveying direction of the pallet and a conveying direction of the pallet and scanning the article accommodated in the pallet; A display unit displaying an image scanned by the camera; A suction nozzle installed at one side of the camera to be movable and lifting at the same time as the camera, and to suck and discharge the article selected as defective through an image displayed on the display unit and to discharge it to the outside; A first flow preventing member installed on the inner one side of the main body so as to be elevated and supporting the pallet by being in contact with one side of the pallet; It is provided with a second flow preventing member which is installed on the other side of the inner side of the main body and rotatably and facing the first flow preventing member to contact the other side of the pallet to support the pallet.

Hereinafter, a vision inspection apparatus according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In describing the vision inspection apparatus according to an exemplary embodiment of the present invention, an article to be inspected for defects will be described as an example of a bullet.

1 is a perspective view of a vision inspection apparatus according to an embodiment of the present invention, FIG. 2 is an enlarged view of portion “A” of FIG. 1, FIG. 3 is an enlarged view of portion “B” of FIG. 1, and FIG. 4 is a view of FIG. It is a schematic front view of the state which removed the front plate of the main body shown in 1.

As shown in FIG. 1, the vision inspection apparatus according to the present exemplary embodiment has a main body 110, and a control unit 120 including a display unit 122 is installed on an upper surface of the main body 110.

Inside the main body 110, a pair of transport rails 130 are provided to face each other, and one end side of the transport rail 130 is exposed to the outside of one side of the main body 110, and the other end side is the main body 110. Is exposed to the outside of the other side.

A pallet 50 is mounted on the transport rail 130 and transported, and as illustrated in FIG. 2, a plurality of accommodation grooves 51 formed in the pallet 50 are bullets, which are items to be inspected for defects. 60 are inserted and supported respectively. Bullet 60 is a main portion of the primer 63 formed on the bottom surface of the casing 61, in general, in the inspection of the defect of the bullet 60, the inspection of the defective portion of the primer 63. Therefore, the bullet 60 is inserted into the pallet 50 so that the primer 63 faces upward. The transfer rail 130 is provided with rollers 133 and 135 (see FIG. 1) for supporting the bottom and side surfaces of the pallet 50 to guide the smooth transfer of the pallet 50.

When the pallet 50 in which the bullet 60 is accommodated is mounted at one end of the transfer rail 130 and transferred to the inside of the main body 110, as shown in FIG. 3, a camera installed inside the main body 110 ( 140 scans the primer 63 accommodated in the pallet 50 while moving in the direction perpendicular to the conveying direction of the pallet 50 and the conveying direction of the pallet 50.

The motion of the camera 140 will be described with reference to FIGS. 3 and 4.

As shown, the first support member 151 is installed on the rear plate of the main body 110 in parallel with the conveying direction of the pallet 50, the first support member 151 and the conveying direction of the pallet 50 One end side of the second supporting member 155 is supported in the direction perpendicular to each other.

At this time, a screw (not shown) is installed inside the first support member 151 in parallel with the conveying direction of the pallet 50, and one end of the second support member 155 is formed of the first support member 151. Gears (not shown) engaged with the screw installed therein are installed. Thus, the screw installed in the first support member 151 is directly reversed by the action of the screw installed in the first support member 151 and the gear installed at one end side of the second support member 155. When rotated, the second support member 155 linearly reciprocates in the conveying direction of the pallet 50.

In addition, a screw (not shown) is installed in the second support member 155 in a direction orthogonal to the conveying direction of the pallet 50, and on one side of the camera 140, inside the second support member 155. Gears (not shown) that engage with the installed screws are installed. Thus, when the screw installed in the second support member 155 rotates forward and backward by the action of the screw installed in the second support member 155 and the gear installed on one side of the camera 140, the camera 140 is a linear reciprocating motion in the direction orthogonal to the conveying direction of the pallet (50).

Images scanned by the camera 140 are displayed on the display unit 122 (refer to FIG. 1), and the images displayed on the display unit 122 are screened for defects by contrast with preset images.

As shown in FIGS. 3 and 4, the bullet 60 selected as defective is absorbed and removed by the suction nozzle 166 which is installed and lifted at the same time as the camera 140.

In detail, the first cylinder 161 is installed at one side of the camera 140, and the first piston 163 is installed at the first cylinder 161 to be elevated. In addition, the suction nozzle 166 is installed at the lower end of the first piston 163 exposed to the lower side of the first cylinder 161. Therefore, the suction nozzle 166 moves up and down while moving in the direction orthogonal to the conveying direction of the pallet 50 and the conveying direction of the pallet 50 similarly to the camera 140.

Thus, the second support member 155 and the camera 140 are moved so that the suction nozzle 166 is positioned directly above the bullet 60 selected as defective among the preset positions of the plurality of bullets 60. The first piston 163 is lowered by supplying hydraulic pressure to one side of the first cylinder 161 so that the suction nozzle 166 comes into contact with the defective bullet 60. Then, when the vacuum pressure is supplied to the suction nozzle 166, the defective bullet 60 is adsorbed to the suction nozzle 166. When the bullet 60 is adsorbed to the suction nozzle 166, the hydraulic pressure is supplied to the other side of the first cylinder 161 to raise the first piston 163, and the suction nozzle 166 is one side inside the main body 110. The second support member 155 and the camera 140 are moved to be positioned directly above the discharge space provided in the chamber. Thereafter, when the vacuum pressure supplied to the suction nozzle 166 is cut off, the bullet 60 is discharged.

While the camera 140 scans the pallet 50, the pallet 50 must not flow to scan accurately.

To this end, as shown in FIGS. 3 and 4, inside the main body 110, first and first flow preventing members 171 and 175 are installed to face each other. In the first and second flow preventing members 171 and 175, the pallet 50 facing the conveying direction of the pallet 50 is in contact with one side and the other side to support the pallet 50. At this time, the first flow preventing member 171 is installed on the main body 110 side in which the pallet 50 is introduced, the second flow preventing member 175 is installed on the main body 110 side in which the pallet 50 is discharged. do.

The main body 110 is provided with the second and third cylinders 181a and 181b, and the second and third cylinders 181a and 181b are provided with the second and third pistons 183a and 183b so as to be liftable. First and second connecting members 185a and 185b are installed at upper ends of the second and third pistons 183a and 183b exposed to the upper sides of the second and third cylinders 181a and 181b. The first and second flow preventing members 171 and 175 are installed and lifted on the first and second connection members 185a and 185b, respectively, to smoothly transport and support the pallet 50.

The structures of the first and second flow preventing members 171 and 175 will be described.

The first flow preventing member 171 has a pair of first arms 172 facing each other having the upper end side coupled to the first connecting member 185a, and a first support rod coupled to the lower end side of the first arm 172 ( 173 and first roller 174 rotatably coupled to first support rod 173. As the first flow preventing member 171 moves up and down, the first roller 174 contacts one side of the pallet 50 to support the pallet 50 toward the second flow preventing member 175.

The second flow preventing member 175 is a pair of mutually opposed second arms 176 and second arms which are supported by an upper end side of the fixing rod 185bb fixed to the second connecting member 185b so as to be rotatable. A second support rod 177 coupled to the lower end side of the 176, a spring for elastically supporting the second roller 178 and the second arm 176 rotatably coupled to the second support rod 177, and the like. It has an elastic member 179. In the first state in which the second flow preventing member 175 is lowered, the other side of the pallet 50 is supported in contact with the lowered second roller 178, but the second flow preventing member 175 is raised and lowered. In this case, the second roller 178 is in contact with the upper surface of the pallet 50 to support the other side of the pallet (50) to be conveyed.

That is, when the pallet 50 is discharged to the outside of the main body 110, the second roller 178 is in contact with the upper surface of the pallet 50 which is raised and then discharged. Then, the lower side of the second arm 176 is rotated to the upper side based on the fixing rod (185bb). Then, when the pallet 50 is completely discharged, the other side of the pallet 50, which is newly transferred while the second arm 176 is returned to the original state by the elastic member 179, is applied to the second roller 178. Contact is supported. This is to ensure that the other side of the pallet 50 can always be supported even when the pallet 50 is attached and conveyed.

And, one side and the other side of the pallet 50 is formed with a depression 53 (see Fig. 2) recessed to the center side of the pallet 50, even if the depression 53 is attached to the pallet 50 is transported The first and second rollers 174 and 178 are inserted into the space formed by the depression 53 so that the first and second rollers 174 and 178 can always support one side and the other side of the pallet 50. .

The inside of the main body 110 is provided with a means for increasing the conveying speed of the pallet 50 toward the conveying direction of the pallet (50).

The means are coupled to the conveying rail 130, and are interconnected by a belt 191, provided with the same diameter, interlocked and composed of a plurality of rollers and a plurality of roller group 193 for mounting and conveying the pallet 50 and It is provided with a plurality of gears 195 provided with a smaller diameter toward the conveying direction of the pallet 50 to rotate each roller group 193. At this time, the diameter of each roller constituting each roller group 193 is the same.

In the present embodiment, three roller groups 193 and three gears 195 are provided as an example.

The first roller group 193a is rotatably installed on the conveyance rail 130 of the main body 110 on which the pallet 50 flows, and the first gear 195a is formed by any of the rollers of the first roller group 193a. It is connected concentrically with one roller. The second roller group 193b is rotatably installed on the transfer rail 130 between the first flow preventing member 171 and the second flow preventing member 175, and the second gear 195b is the second roller group. It is connected concentrically with any one of the rollers of 193b. The third roller group 193c is rotatably installed on the conveyance rail 130 on the main body 110 side from which the pallet 50 is discharged, and the third gear 195c is any of the rollers of the third roller group 193c. It is connected concentrically with one roller.

At this time, each roller of the 1st roller group 193a, the 2nd roller group 193b, and the 3rd roller group 193c is provided with the same size, and is interlocked by the belt 191, respectively. The second gear 195b is smaller in diameter than the first gear 195a and the third gear 195c is smaller in diameter than the second gear 195b. The first gear 195a, the second gear 195b, and the third gear 195c are connected to the belt 215 connected to the motor 210, respectively. Therefore, when the first, second, and third gears 195a, 195b, 195c rotate by the motor 210, the first, second, and third roller groups 193a, 193b, 193c also rotate the first, second, and third gears ( 195a, 195b, and 195c, respectively. By the way, since the magnitude | size of diameter is in order of 1st gear 195a> 2nd gear 195b> 3rd gear 195c, rotation speed is 1st gear 195a <2nd gear 195b <3rd gear (195c). Accordingly, since the roller group 193 also rotates in the order of the first roller group 193a &lt; second roller group 193b &lt; the third roller group 193c, the pallet discharged more than the speed of the pallet 50 introduced ( 50) is faster. This means that even when the pallet 50 is attached and supplied to the conveying rail 130, when the pallet 50 is transferred to the first and second flow preventing members 171 and 175 and the outside of the main body 110, When the discharged to the pallet 50 is to be spaced apart from each other. Then, the pallets 50 are not attached to each other and are not transferred to the first and second flow preventing members 171 and 175, and are not attached to each other and thus are not transferred to the outside of the main body 110. Therefore, the first and second flow preventing members 171 and 175 are not transferred. The pallet 50 can always be supported.

5A to 5K illustrate the operation of the vision inspection apparatus according to the present embodiment, which will be described. The bullet 60 is shown only in FIGS. 5E and 5F.

As shown in FIG. 5A, it is assumed that the first and second flow preventing members 171 and 175 are lowered to the first state. In the state shown in FIG. 5A, after the pallet 50 in which the bullet 60 is accommodated is mounted on the roller 133 of the transfer rail 130, when the roller 133 is rotated, the pallet 50 is the main body 110. Is transported to the interior of the.

As shown in FIG. 5B, when the pallet 50 is transferred to the first flow preventing member 171 side, the second piston 183a is raised by the hydraulic pressure supplied to one side of the second cylinder 181a, and thus Due to this, the first flow preventing member 171 is raised.

When the first flow preventing member 171 is raised, as shown in FIG. 5C, the pallet 50 mounted on the first roller group 193a that is rotated by the first gear 195a is the second gear 195b. It is mounted on the second roller group (193b) that rotates by a) and is transferred between the first flow preventing member 171 and the second flow preventing member 175. Then, the other side of the pallet 50 is supported by the second roller 178 of the second flow preventing member 175 so that the pallet 50 is no longer transferred. At this time, since the rotational speed of the second roller group 193b is faster than the rotational speed of the first roller group 193a, the interval between the adjacent pallet 50 and the pallet 50 is the second flow preventing member 175. It becomes wider toward the side.

When the other side of the pallet 50 is supported by the second roller 178 of the second flow preventing member 175, as shown in FIG. 5D, the oil is supplied to the other side of the second cylinder 181a. 2 piston 183a descends. Then, the first flow preventing member 171 is lowered, so that the first roller 174 of the first flow preventing member 171 is in contact with one side of the pallet 50 to support the pallet 50.

As shown in FIG. 5D, when the pallet 50 is supported by the first and second flow preventing members 171 and 175, the roller 133 and the first to third roller groups 193a, 193b, and 193c may be It is preferable not to rotate. In this state, the second support member 155 is moved in the conveying direction of the pallet 50 by rotating a screw (not shown) installed in the first support member 151, and the inside of the second support member 155. By rotating the screw (not shown) installed in the camera 140 to scan the bullet 60 accommodated in the pallet 50 while moving in the direction perpendicular to the conveying direction of the pallet (50).

Then, the images scanned by the camera 140 are displayed on the display 122 (refer to FIG. 1), and the controller 120 selects whether the bullet 60 is defective by comparing with preset data. Since each position of the plurality of bullets 60 is input to the controller 120, when the position of the bullet 60 determined as defective among the plurality of bullets 60 is input, as shown in FIG. 2 The suction nozzle 166 is positioned above the defective bullet 60 by the movement of the support member 155 and the camera 140. After that, when hydraulic pressure is supplied to one side of the first cylinder 161, the first piston 163 is lowered and the suction nozzle 166 contacts the defective bullet 60. And the bullet 60 which is defective by the vacuum pressure supplied to the suction nozzle 166 is adsorb | sucked to the suction nozzle 166.

Thereafter, as shown in FIG. 5F, when hydraulic pressure is supplied to the other side of the first cylinder 161, the suction nozzle 166 is raised while the first piston 163 is raised. Then, the defective bullet 60 is sucked up by the suction nozzle 166, and the suction nozzle 166 discharges the defective bullet 60 by the movement of the second support member 155 and the camera 140. Move to the space to make. When the suction nozzle 166 is moved to the discharge space of the defective bullet 60, the vacuum pressure supplied to the suction nozzle 166 is cut off, whereby the defective bullet 60 falls down and discharged.

When the discharge of all defective bullets 60 is completed, as shown in FIG. 5G, the first and second flow preventing members 171 and 175 are raised, and the first, second and third are driven by the motor 210. As the roller groups 193a, 193b, and 193c rotate, the pallet 50 is transferred to the other side of the main body 110 as shown in FIG. 5H.

After the conveyance of the pallet 50 is restarted, when all of the defective bullets 60 are discharged and the finished pallet 50 is positioned below the second flow preventing member 175, as shown in FIG. 5I, The second flow preventing member 175 is lowered. Then, since the second roller 178 is in contact with the upper surface of the discharged pallet 50, the lower side of the second arm 177 is rotated to the upper side around the fixing rod (185bb).

When the pallet 50 in contact with the second roller 178 is completely discharged in this state, as shown in FIG. 5J, the second arm 177 is returned to the original state by the elastic member 179. As a result, the other side surface of the newly conveyed pallet 50 is contacted and supported by the second roller 178.

When the other side of the pallet 50 is in contact with the second roller 178, as shown in Figure 5k, the first flow preventing member 171 is lowered, thereby causing one side of the pallet 50 is first 1 is supported in contact with the roller 174.

As described above, the distance between the pallet 50 and the pallet 50 to be transferred is different from one side of the main body 110 due to the difference in the rotational speed of the first, second and third roller groups 193a, 193b, 193c. That is, it becomes wider toward the conveyance direction side of the pallet 50. Therefore, in the case of the pallet 50 mounted on one end side of the transfer rail 130, the pallet 50 and the pallet 50 may be attached, but in the case of the pallet 50 transferred to the inside of the main body 110. Are rarely transported together.

And even if the pallet 50 is attached and conveyed, the other side surface of the pallet 50 conveyed to the second flow preventing member 175 side by the action of the second flow preventing member 175 described above is always the second roller 178. Is supported by contact. Further, even if the other side surface of the other pallet 50 is attached to one side of the pallet 50 on which the other side is supported on the second flow preventing member 175, the recess 53 formed on the side surface of the pallet 50 ( 2, the first roller 174 of the first flow preventing member 171 is inserted into the space between the depression 53 and the depression 53 while being lowered to prevent the second flow. One side of the pallet 50 supported by the member 175 is supported. At this time, it is obvious that the space formed by the depression 53 and the depression 53 of the pallet 50, which are attached to each other, should be formed to the extent that the first and second rollers 174 and 178 can be inserted.

As described above, the vision inspection apparatus according to the present invention, among the plurality of articles accommodated in the pallet, the article sorted as defective is adsorbed by the suction nozzle and automatically discharged, thereby improving productivity as well as being very convenient.

Further, among the first and second flow preventing members for preventing the flow of the pallet, the second flow preventing member which blocks and supports the pallet being transported supports the pallet by contacting the upper surface of the pallet and returning to the original state. Always support the pallet after it is transported even if it is attached. Therefore, there is no pallet that passes without inspection for defects.

In addition, since the pallet is conveyed faster in the conveying direction by the roller group having a higher rotational speed toward the conveying direction, the pallets conveyed into the main body always have a gap. Therefore, since the pallet is always supported by the first and second flow preventing members, there is no more pallet that passes without checking for defects.

In the above, the present invention has been described in accordance with one embodiment of the present invention, but those skilled in the art to which the present invention pertains have been changed and modified without departing from the spirit of the present invention. Of course.

Claims (6)

main body; A transport rail which penetrates the inside of the main body from the outside of one side of the main body and is installed toward the outer side of the other side of the main body and is loaded with a pallet containing an article to be inspected; A camera installed inside the main body so as to be movable in a direction perpendicular to a conveying direction of the pallet and a conveying direction of the pallet and scanning the article accommodated in the pallet; A display unit displaying an image scanned by the camera; A suction nozzle installed at one side of the camera to be movable and lifting at the same time as the camera, and to suck and discharge the article selected as defective through an image displayed on the display unit and to discharge it to the outside; A first flow preventing member installed on the inner one side of the main body so as to be elevated and supporting the pallet by being in contact with one side of the pallet; And a second flow preventing member installed on the other side of the inner side of the main body so as to be opposite to the first flow preventing member and being rotatably installed and in contact with the other side of the pallet to support the pallet. Vision inspection device. The method of claim 1, The first flow preventing member is provided in a pair of opposed to each other and the upper end side is supported on the main body side of the pair of first arm, the first support rod coupled to the lower end side of the first arm, the first support rod A first roller rotatably coupled and supporting one side of the pallet to support the pallet toward the second flow preventing member; The second flow preventing member is provided in a pair of opposed to each other, the upper end side is supported by the main body side and the lifting and at the same time rotatably installed around the upper end side coupled to the main body side, the second arm, the second A second support rod coupled to the lower end side of the arm, a second roller rotatably coupled to the second support rod and in contact with the other side of the pallet to support the pallet toward the first flow preventing member side, of the second arm Vision inspection apparatus comprising an elastic member for elastically supporting the lower end side. The method of claim 2, When the pallet is discharged to the outside of the main body when the work is completed, the raised second flow preventing member descends and the second roller contacts the upper surface of the pallet where the work is completed, When the finished pallet is moved to the outside of the second flow preventing member, the second arm is returned to the original state by the elastic member, and the second roller is newly supported to support the other side of the pallet. Vision inspection device characterized by. The method according to any one of claims 1 to 3, Vision inspection apparatus characterized in that the inside of the main body is further provided with a means for increasing the conveying speed of the pallet toward the conveying direction of the pallet. The method of claim 4, wherein The means is composed of a plurality of rollers respectively coupled to the conveying rail and provided with the same diameter and interlocked with each other, and a plurality of roller groups for mounting and conveying the pallet, respectively, and a smaller diameter toward the conveying direction of the pallet by a motor. It is provided with a plurality of gears for rotating the respective roller group while rotating, Each roller of each said roller group is a vision inspection apparatus characterized by the same diameter. The method of claim 5, wherein The roller group may include a first roller group rotatably installed on the conveying rail inside the main body into which the pallet is introduced, and a roller rotatably installed on the conveying rail between the first flow preventing member and the second flow preventing member. A second roller group and a third roller group rotatably installed on the conveying rail inside the main body through which the pallet is discharged; The gears are connected concentrically with any one of the rollers of the first gear and the rollers of the second roller group and connected concentrically with any one of the rollers of the first roller group and have a smaller diameter than the first gears. And a third gear connected concentrically with any one of the provided second gear and the rollers of the third roller group and having a smaller diameter than the second gear.

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