Appearance inspection device

Abstract

To provide an appearance inspection device capable of handling parts quicker than conventional devices.SOLUTION: An appearance inspection device (100) is provided, comprising a disk-like conveyor rotor (1) having multiple accommodation holes (20a, 20b, 20c, 20d, 20e, 20f) for accommodating parts, a rotary mechanism (15) for turning the conveyor rotor (1), a vibration mechanism (40) for vibrating the conveyor rotor, and an image sensor (50) for capturing images of parts accommodated in the accommodation holes.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a visual inspection apparatus. [Background technology]

[0002] As a method for handling electronic components, for example, Patent Document 1 discloses a method in which a disk-shaped test plate having component stands, which are through-holes capable of accommodating electronic components, arranged radially is rotated, and the electronic components are attached and held on the component stands.

[0003] Patent Document 1 discloses a method of arranging a vacuum plate on the bottom of a disk-shaped test plate and applying vacuum suction to facilitate placement of the component on the component stand. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Special Publication No. 2000-501174 Summary of the Invention [Problem to be solved by the invention]

[0005] However, when vacuum suction is used, a certain amount of space is required for suction, making it difficult to provide a large number of component stands on the disk-shaped test plate. For this reason, in the method of Patent Document 1, the number of component tables occupying the disk-shaped test plate is insufficient, and the number of components handled per unit time is small, so a faster handling method has been desired.

[0006] On the other hand, when vacuum suction is not used, there is a problem that components are often not accommodated on the component table, resulting in low utilization of the component table.

[0007] The present invention has been made to solve the above problems, and has an object to provide a visual inspection apparatus that can handle parts at a higher speed than conventional apparatuses. [Means for solving the problem]

[0008] The visual inspection device of the present invention is characterized by comprising a disk-shaped conveying rotor having a plurality of storage holes in which components are stored, a rotation mechanism for rotating the conveying rotor, a vibration mechanism for vibrating the conveying rotor, and an image sensor for capturing images of the components stored in the storage holes. [Effects of the Invention]

[0009] According to the present invention, it is possible to provide a visual inspection apparatus that can handle parts at higher speeds than conventional apparatuses. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a perspective view schematically showing an example of a visual inspection apparatus according to the present invention. [Figure 2] FIG. 2 is a side view of the appearance inspection apparatus shown in FIG. [Figure 3] FIG. 3 is a plan view schematically showing an example of a transfer rotor that constitutes the visual inspection apparatus of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0011] The visual inspection device of the present invention will be described below. However, the present invention is not limited to the following configuration, and can be appropriately modified and applied within the scope that does not change the gist of the present invention. Note that a combination of two or more of the individual desirable configurations of the present invention described below also constitutes the present invention.

[0012] In this specification, terms indicating the relationship between elements (e.g., "opposite," "orthogonal," etc.) and terms indicating the shape of elements (e.g., "rectangular," etc.) are not expressions that express only a strict meaning, but are expressions that include a substantially equal range, for example, a difference of a few percent.

[0013] The drawings shown below are schematic diagrams, and the dimensions, aspect ratios, and other scales may differ from those of the actual product.

[0014] [Visual inspection equipment] The visual inspection device of the present invention is characterized by comprising a disk-shaped conveying rotor having a plurality of storage holes in which components are stored, a rotation mechanism for rotating the conveying rotor, a vibration mechanism for vibrating the conveying rotor, and an image sensor for capturing images of the components stored in the storage holes.

[0015] FIG. 1 is a perspective view schematically showing an example of a visual inspection apparatus according to the present invention. FIG. 2 is a side view of the appearance inspection apparatus shown in FIG. The visual inspection device 100 includes a conveying rotor 1, a rotation mechanism 15 that rotates the conveying rotor 1, a vibration mechanism 40 that vibrates the conveying rotor 1, and an image sensor 50 that captures images of the parts housed in the housing holes. The transfer rotor 1 rotates counterclockwise when viewed from the image sensor 50 side (the curved arrow in FIG. 1 indicates the direction in which the transfer rotor 1 rotates).

[0016] A storage plate 35 is provided on the main surface of the transfer rotor 1. The storage plate 35 forms a storage section in which the components 5 are stored. However, the storage plate 35 is fixed at a predetermined position regardless of the rotation of the transfer rotor 1, and does not rotate in accordance with the rotation of the transfer rotor 1. Therefore, the position of the storage portion is also fixed. When the receiving hole provided in the transfer rotor 1 passes under the storage section, the component 5 is received in the receiving hole.

[0017] The component 5 accommodated in the accommodation hole is captured by the image sensor 50 in the imaging area A as the conveyance rotor 1 rotates. i will be transported to. Imaging area A i In this case, information about the component 5, such as its outer shape, is acquired by the image sensor.

[0018] As shown in FIG. 2, the rotation mechanism 15 has a drive unit (not shown), a shaft 15a that transmits the power of the drive unit, and a connection unit 15b that connects the shaft 15a and the transport rotor 1.

[0019] 2, the transport rotor 1 is supported by a support table 30. However, the support table 30 is not connected to the shaft 15a and does not rotate together with the transport rotor 1. Therefore, the transport rotor 1 slides on the surface of the support table 30.

[0020] A vibration mechanism 40 is provided around the rotation axis of the transfer rotor 1. By applying vibration to the transport rotor 1 by the vibration mechanism 40, the components 5 are more easily accommodated in the accommodation holes.

[0021] A plate-like member 70 and a light source 60 are disposed at a position facing the image sensor 50 across the transfer rotor 1. The light source 60 emits light toward the transport rotor 1, thereby improving the accuracy of acquiring the outer shape by the image sensor 50. Note that, in the imaging area A shown in FIG. i The support table 30 and the plate-like member 70 at the positions corresponding to the positions are made of a light-transmitting material, and the light emitted from the light source 60 can reach the receiving hole.

[0022] After the image of the component 5 has been captured by the image sensor 50, it is ejected below (in the direction of gravity) the conveying rotor 1 and the support table 30 by an opening / closing mechanism (not shown) provided on the support table 30. The ejected component 5 passes through the plate-like member 70 and the chute 80 and is housed in a case (not shown).

[0023] (Transport rotor) The visual inspection device of the present invention includes a transfer rotor. The transport rotor preferably includes a disk member having a main surface, and a plurality of accommodation holes formed in the main surface of the disk member, in which the components are accommodated.

[0024] The disk member is a flat plate having a main surface and a generally circular shape in a plan view. The diameter of the circle is preferably 300 mm or more and 600 mm or less.

[0025] The thickness of the disk member is preferably 0.1 mm or more and 10 mm or less. The thickness of the disk member is preferably at least greater than the maximum length of the component to be accommodated in the accommodation hole.

[0026] Examples of materials that can be used to form the disk member include glass epoxy resin and metal.

[0027] A plurality of receiving holes are provided in the main surface of the disk member.

[0028] The main surface of the transport rotor is preferably inclined at an angle of 45° or more and less than 90° with respect to the vertical direction. In other words, the main surface of the transport rotor is preferably inclined at an angle of more than 0° and less than 45° with respect to the horizontal direction. When the inclination angle of the main surface of the transport rotor relative to the vertical or horizontal direction is within the above range, components can be easily accommodated in the accommodation holes of the transport rotor. The main surface of the transport rotor is the same as the main surface of the disk member that constitutes the transport rotor.

[0029] The shape of the receiving hole is not particularly limited, but examples thereof include a substantially cylindrical shape and a rectangular parallelepiped shape. When the receiving hole is substantially cylindrical, the diameter of the circle is preferably 0.05 mm or more and 1.0 mm or less. When the receiving hole has a rectangular parallelepiped shape, it is preferable that the dimension of one side of the rectangular parallelepiped is 0.05 mm or more and 1.0 mm or less.

[0030] The receiving hole may be a through hole or a blind hole. If the storage holes are through holes, placing the support table (described later) on the transport rotor will prevent the components from falling out of the storage holes, and the opening and closing mechanism on the support table will make it easy to adjust the retention and ejection of the components.

[0031] If the receiving hole is not a through-hole, the component received in the receiving hole may be removed from the transport rotor by a method such as vacuum suction.

[0032] The plurality of receiving holes may be arranged randomly or regularly. For example, when a plurality of receiving holes are aligned in a straight line to form a receiving hole row, it can be said that the plurality of receiving holes are arranged regularly.

[0033] The number of receiving holes constituting the receiving hole row is preferably a multiple of 16. If the number of accommodation holes that make up the accommodation holes is a multiple of 16, it is compatible with the hexadecimal number system that is commonly used in computers, making it easier for the computer to manage the component information obtained from the image sensor.

[0034] A plurality of rows of receiving holes may be provided. The plurality of rows of receiving holes are preferably arranged at equal intervals. Equal spacing here means that when one reference row of accommodating holes is rotated around the center O of the disk member, the rotation angle until it overlaps with another adjacent row of accommodating holes is approximately equal for adjacent rows of accommodating holes.

[0035] FIG. 3 is a plan view schematically showing an example of a transfer rotor that constitutes the visual inspection apparatus of the present invention. The transfer rotor 1 shown in FIG. 3 includes a disk member 10 and a plurality of rows of receiving holes 20 provided on a main surface 10a of the disk member 10.

[0036] In the transfer rotor 1, one row of accommodation holes 20 is rotated at intervals of 14.4° around the center O of the disk member 10 so that the row of accommodation holes 20 overlaps with an adjacent row of accommodation holes 20. Therefore, in the transfer rotor 1 shown in FIG. 3, it can be said that a plurality of rows of accommodation holes 20 are provided at equal intervals of 14.4°.

[0037] Each of the receiving hole rows 20 is made up of a plurality of receiving holes 20a, 20b, 20c, 20d, 20e, and 20f aligned in a straight line.

[0038] The row of accommodation holes 20 is regarded as a single straight line, and the end point of the row of accommodation holes 20 closest to the center O of the disk member 10 is designated as point A. A ray R is assumed to extend from the center O of the disk member 10 and pass through point A. In this case, the ray R and the row of accommodation holes 20 intersect at point A. In the transfer rotor 1 shown in FIG. 3, the acute angle (the angle indicated by θ in FIG. 3) formed between the radial line R and the row of accommodation holes 20 at point A is equal to or greater than 1° and less than 90°, specifically 20°.

[0039] By extending the array of accommodating holes 20 in a direction such that the acute angle is greater than or equal to 1° and less than 90°, the straight-line distance AC2 from point A to point C2 when point A is extended to the circumference 10c of the disc member along the direction in which the array of accommodating holes 20 extends (array direction) and point C2 is assumed to be on the circumference 10c becomes longer than the straight-line distance AC1 from point A to point C1 when point A is extended to the circumference 10c of the disc member along the radial line R and point C1 is assumed to be on the circumference 10c.

[0040] Therefore, compared to when the receiving hole row 20 is extended from the point A along the radial line R, the length of the receiving hole row 20, and therefore the number of receiving holes constituting the receiving hole row 20, can be increased. Therefore, the number of parts that can be accommodated in the receiving holes per unit time increases, enabling faster handling than before.

[0041] 3 is a circle formed by rotating point A around the center O of the disk member 10. Therefore, the end points of the array of receiving holes 20 are on circle B, and the receiving holes are provided only outside circle B.

[0042] (Storage section) It is preferable that a storage portion for storing the parts is provided on the main surface of the transport rotor. When the receiving holes pass under the storage section due to the rotation of the transport rotor, the components are received in the receiving holes. The provision of the storage section makes it easier to receive the components in the receiving holes.

[0043] (Rotation mechanism) The rotation mechanism is a mechanism that rotates the transfer rotor. The rotation mechanism includes, for example, a drive unit, a shaft that transmits power from the drive unit, and a connection unit that connects the shaft to the transport rotor.

[0044] The driving unit may be, for example, a motor.

[0045] The rotation speed of the transfer rotor by the rotation mechanism is preferably 5 rpm or more and 100 rpm or less.

[0046] The direction of rotation of the transfer rotor by the rotation mechanism is not particularly limited. For example, when the transport rotor is viewed from the image sensor side, if the acute angle formed by the radial line and the row of accommodating holes at point A on the transport rotor is located to the right of the radial line, and if rotating the transport rotor to the right (clockwise) is defined as the forward direction and rotating the transport rotor to the left (counterclockwise) is defined as the reverse direction, then the rotation direction of the transport rotor may be either the forward direction or the reverse direction.

[0047] (vibration mechanism) The visual inspection device of the present invention includes a vibration mechanism. The vibration mechanism is a mechanism that vibrates the transport rotor. By vibrating the transport rotor with the vibration mechanism, the components are more easily accommodated in the accommodation holes. Furthermore, the vibration mechanism vibrates the transport rotor, thereby shaking off components stuck to the surface of the transport rotor.

[0048] The direction of vibration applied to the transport rotor by the vibration mechanism is preferably substantially parallel to the axis of rotation applied to the transport rotor by the rotation mechanism. When the vibration direction applied to the transport rotor by the vibration mechanism is in the above direction, the components are more likely to be accommodated in the accommodation holes.

[0049] The vibration mechanism is preferably provided below the reservoir. If the vibration mechanism is provided near the storage section, it becomes easier to vibrate the transport rotor in the storage section, making it easier for the parts to be stored in the storage holes.

[0050] The vibration mechanism preferably comprises a cam mechanism. The cam mechanism is a mechanism that converts rotary motion into linear motion (vibration) using, for example, a rotary plate cam that is elliptical in plan view.

[0051] The rotation axis of the rotary plate cam is perpendicular to the direction of vibration generated by the rotary plate cam. Therefore, by bringing the rotation axis of the rotary plate cam into contact with the rotation axis of the transport rotor so that it is perpendicular to the rotation axis of the transport rotor, the transport rotor can be vibrated in a direction approximately parallel to the rotation axis of the transport rotor.

[0052] The amplitude of the vibration mechanism is not particularly limited, but is preferably 1 mm or more and 5 mm or less.

[0053] The frequency of the vibration generated by the vibration mechanism is preferably 10 Hz or more and 25 Hz or less.

[0054] The driving method of the vibration mechanism is not particularly limited, and examples include the cam mechanism described above, a magnet type, a piezoelectric element type, etc. Among these, the piezoelectric element type is preferred.

[0055] The vibration mechanism may vibrate the transport rotor directly, or may vibrate the transport rotor indirectly via a support table, which will be described later.

[0056] (support table) The visual inspection device of the present invention may include a support table that supports the transport rotor at its bottom surface. By providing a support table that supports the transport rotor at its bottom surface, deformation of the transport rotor can be prevented. By combining a support table that supports the transport rotor at its bottom surface with a transport rotor whose accommodation hole is a through hole, components can be held in the accommodation hole. If the accommodation hole is a blind hole, the support table is not essential.

[0057] The support table is preferably configured to slide relative to the transport rotor. In this case, the support table does not rotate like the transport rotor.

[0058] The shape of the support table is not particularly limited, but it is preferable that the support table has substantially the same shape as the transport rotor, for example, a substantially circular flat plate shape in plan view.

[0059] The material of the support table is not particularly limited, but the same material as the transport rotor can be preferably used. However, the portion of the support table that overlaps with the imaging area where the image sensor is used to acquire the outer shape of the component is preferably made of a light-transmitting material. This configuration makes it possible to irradiate light toward the component from the side opposite the image sensor when acquiring the outer shape of the component using the image sensor.

[0060] (Image sensor) The visual inspection device of the present invention includes an image sensor. The image sensor is preferably provided at a position where it can acquire information about the components accommodated in the accommodation holes of the transport rotor.

[0061] Information about the parts accommodated in the accommodation holes of the transport rotor is acquired by an image sensor. The information about the component acquired by the image sensor depends on the type and arrangement of the image sensor, but may include, for example, the outer shape.

[0062] By comparing the external shape of the part acquired by the image sensor with a predetermined external shape of the part, it is possible to determine whether the part has cracks, chips, etc. In addition, it is also possible to count the number of parts.

[0063] Examples of image sensors include a charge-coupled device (CCD) image sensor and a complementary metal-oxide semiconductor (CMOS) image sensor, and the like. A plurality of these may be included.

[0064] The image sensor is preferably a line sensor. A line sensor is a sensor in which multiple image pickup elements are arranged in a line.

[0065] (light source) The visual inspection apparatus of the present invention preferably further comprises a light source that irradiates the transport rotor with light.

[0066] The light source is preferably provided at a position facing the image sensor across the transport rotor. In this case, the light emitted from the light source and transmitted through the support table is blocked by the transport rotor and the components housed in the housing holes. Therefore, the light from the light source passes through the gap between the housing hole and the component, making it easier to recognize the external shape of the component and improving the accuracy of information acquisition. In addition, it also makes counting easier.

[0067] As the light source, various types of lighting such as dome lighting and ring lighting can be used, but bar lighting (also called line lighting) is preferred.

[0068] When the light source is a bar light (line light), it is preferable to arrange the light source so that its longitudinal direction is parallel to the direction in which the row of accommodating holes extends (row direction). In this case, it is preferable that the length of the light source in the longitudinal direction is equal to or greater than the length of the row of accommodating holes.

[0069] The light source preferably includes at least a part of the wavelength range of, for example, 400 nm to 1200 nm.

[0070] The light source may be any light source that emits at least some of the wavelengths described above, and examples thereof include a light emitting diode, a halogen lamp, an HID lamp, a low pressure discharge lamp, and a xenon lamp.

[0071] (hopper) A hopper for supplying parts to the storage section of the transport rotor may be installed near the storage section of the transport rotor.

[0072] The approximate number of parts in the storage section of the transfer rotor may be detected by a camera or sensor, and when the number decreases, parts may be supplied from the hopper.

[0073] (Opening and closing mechanism) In the visual inspection apparatus of the present invention, the support table may be provided with an opening and closing mechanism. The opening and closing mechanism is a mechanism that adjusts the holding and ejection of components accommodated in the accommodation holes of the transport rotor by opening and closing. For example, by opening the opening / closing plate, the component accommodated in the accommodation hole can be ejected, and by closing the opening / closing plate, the component accommodated in the accommodation hole can be retained. Therefore, by opening and closing the opening / closing plate, it is possible to selectively retain and eject the component for which inspection has been completed. The retention and ejection of the component may be determined taking into consideration the results of inspection of the component by the image sensor.

[0074] (case) The visual inspection device of the present invention may further include a case. The case is a container that houses the parts ejected by the opening and closing mechanism of the support table.

[0075] The shape of the case is not particularly limited, but may be, for example, a rectangular parallelepiped shape with a sliding lid on the surface.

[0076] The sliding lid may be coupled with the case being placed in place. For example, the sliding lid may be closed before the case is placed in a predetermined position, but may be configured to open when the case is placed in a predetermined position. This configuration can prevent impurities other than the components from entering the inside of the case.

[0077] The case may have an RFID tag disposed thereon. The RFID tag may contain information such as whether or not a part is contained, and part information (model number, dimensions, number), as needed.

[0078] If an RFID tag is attached to the case, the appearance inspection device preferably further includes an RFID reader / writer. The RFID reader / writer is preferably located near the case. Information about the parts to be housed in the case can be written in advance and then read after the case is installed, or information about the parts housed in the case (model number, dimensions, quantity, etc.) can be written.

[0079] (Shooter) A chute may be disposed between the support table and the case to collect the parts ejected by the opening / closing mechanism of the support table and guide them to the case. By disposing the chute between the support table and the case, the parts ejected by the opening and closing mechanism of the support table can be reliably accommodated in the case.

[0080] The chute is preferably funnel-shaped with a large opening at the entrance located on the support table side and a small opening at the exit located on the case side.

[0081] The chute may have a vibration mechanism. The vibration mechanism can prevent parts from clogging the chute.

[0082] When a chute is provided between the support table and the case, a plurality of cases may be installed. If multiple cases are installed, once all the chips to be stored in the first case have been stored, the first case can be moved and the connection between the chute and the first case can be disconnected, and then another empty case (second case) can be moved and connected to the chute. Alternatively, the chute may be moved instead of the first case, the connection between the chute and the first case may be released, and then the chute may be connected to the second case.

[0083] (Plate-shaped member) The visual inspection device of the present invention may further include a light-transmitting plate-like member.

[0084] The plate-like member is configured to guide the parts ejected by the opening and closing mechanism of the support table to the chute or case described above.

[0085] The plate-like member is preferably disposed between the light source and the image sensor. When the plate-like member is disposed between the light source and the image sensor, the plate-like member does not prevent the light emitted from the light source from reaching the support table and the transport rotor.

[0086] The plate-like member is preferably provided below the support table. It is preferably provided between the support table and the chute or between the support table and the case. By locating the optically transparent plate-like member in the above position, the parts discharged by the support table opening / closing mechanism can be guided to the chute or case without locating a chute or case directly below the support table. Furthermore, the light emitted from the light source is not prevented from reaching the support table and the transport rotor.

[0087] The material constituting the plate-like member may be any light-transmitting material, such as resin or glass.

[0088] It is preferable that a coating layer is provided on the surface of the plate-like member that comes into contact with the component. If a coating layer is provided on the surface, the sliding property between the surface of the plate-like member and the component is improved, and the transportation (movement) of the component can be stabilized. Furthermore, even if dirt adheres to the surface of the plate-like member, it can be easily removed.

[0089] (Guide plate) The outer circumferential edge of the transport rotor may further be provided with a guide plate for rotating the outer circumferential edge of the transport rotor along the outer periphery of the support table.

[0090] The guide plate can adjust the position of the transport rotor so that it rotates along the support plate, and can also suppress warping of the transport rotor.

[0091] The shape of the guide plate is not particularly limited, but examples include a shape that protrudes from the outer peripheral edge of the transport rotor toward the support plate and further covers the outer peripheral edge of the support plate from the outside, or a shape that not only covers the outer peripheral edge of the support plate but also covers part of the main surface of the support plate on the side that does not face the transport rotor from the outside.

[0092] The guide plate may be provided on the outer circumferential edge of the support plate, rather than on the outer circumferential edge of the transport rotor.

[0093] (parts) A description will be given of components that are the subject of visual inspection by the visual inspection apparatus of the present invention. The components to be inspected by the visual inspection apparatus of the present invention are not particularly limited, but examples thereof include electronic components such as multilayer ceramic capacitors, resistors, inductors, and thermistors.

[0094] The components are not limited to electronic components, but may be components that do not have internal electrodes, electronic components in the middle of manufacturing, etc.

[0095] The shape of the part is not particularly limited, but it is preferably a substantially rectangular parallelepiped shape. The component may be provided with external electrodes.

[0096] The part may have, for example, a rectangular parallelepiped shape with a width dimension (W dimension) and a thickness dimension (T dimension) of 0.1 mm or more and 0.3 mm or less, and a length dimension (L dimension) of 0.2 mm or more and 0.6 mm or less.

[0097] This specification discloses the following inventions:

[0098] The present disclosure (1) provides a disk-shaped conveying rotor having a plurality of accommodation holes for accommodating parts; a rotation mechanism that rotates the transport rotor; a vibration mechanism that vibrates the transport rotor; and an image sensor that inspects the component accommodated in the accommodation hole.

[0099] The present disclosure (2) is an appearance inspection device described in the present disclosure (1), in which the direction of vibration applied to the conveying rotor by the vibration mechanism is a direction approximately parallel to the rotation axis of rotation applied to the conveying rotor by the rotation mechanism.

[0100] The present disclosure (3) is the visual inspection device according to the present disclosure (1) or (2), wherein the main surface of the transport rotor is inclined at an angle of 45° or more and less than 90° with respect to the vertical direction.

[0101] The present disclosure (4) is the visual inspection device according to any one of the present disclosures (1) to (3), further comprising a light source that irradiates the transport rotor with light.

[0102] The present disclosure (5) further includes a disk-shaped support table that supports the transport rotor at its bottom surface, This is an appearance inspection device described in any one of the present disclosures (1) to (4), wherein a guide plate is further provided at the outer peripheral end of the transport rotor to rotate the outer peripheral end of the transport rotor along the outer periphery of the support table.

[0103] The present disclosure (6) further includes a disk-shaped support table that supports the transport rotor at its bottom surface, The support table is further provided with an opening / closing mechanism that adjusts the holding and ejection of components accommodated in the accommodation holes of the transport rotor by opening and closing, in an appearance inspection device described in any one of (1) to (5) of the present disclosure. [Explanation of symbols]

[0104] 1. Transfer rotor 5 parts 10 Disk member 10a Main surface of disk member 10c Circumference of disc member 15 Rotation mechanism 15a shaft 15b Connection 20 Receiving Hole Rows 20a, 20b, 20c, 20d, 20e, 20f Receiving holes 30 Support Table 35 Reservoir plate 40 Vibration mechanism 50 Image Sensor 60 light source 70 Plate-shaped member 80 Shooter 100 Visual inspection equipment A End point of the row of receiving holes closest to the center of the disk member A i Imaging area B The circle formed by rotating point A around the center of the disk C1: A point extending from point A along a radial line to the circumference of the disk member C2: A point extending from point A along the row direction of the receiving hole row to the circumference of the disc member O Center of disc member R Radiation

Claims

1. a disc-shaped conveying rotor having a plurality of accommodation holes for accommodating components; a rotation mechanism that rotates the transport rotor; a vibration mechanism that vibrates the transport rotor; an image sensor that captures an image of the component accommodated in the accommodation hole.

2. 2. The visual inspection device according to claim 1, wherein the direction of the vibration applied to the transport rotor by the vibration mechanism is substantially parallel to the axis of rotation applied to the transport rotor by the rotation mechanism.

3. 3. The visual inspection device according to claim 1, wherein the main surface of the transport rotor is inclined at an angle of 45 degrees or more and less than 90 degrees with respect to the vertical direction.

4. 3. The visual inspection apparatus according to claim 1, further comprising a light source that irradiates the transport rotor with light.

5. Further, a disk-shaped support table is provided to support the transport rotor at a bottom surface thereof, 3. The visual inspection apparatus according to claim 1, further comprising a guide plate provided at an outer peripheral end of the transport rotor for rotating the outer peripheral end of the transport rotor along the outer periphery of the support table.

6. Further, a disk-shaped support table is provided to support the transport rotor at a bottom surface thereof, 3. The visual inspection apparatus according to claim 1, wherein the support table is further provided with an opening / closing mechanism that adjusts the holding and ejection of the components accommodated in the accommodation holes of the transport rotor by opening and closing the support table.

Images