JP2018059806A - Component inspection tray and component inspection method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve inspection efficiency in a component inspection tray and a component inspection method.SOLUTION: A mounting stand 1 for a plurality of components 11 to be inspected by a probe 9 is formed into a terrace shape, so that terrace faces 2 and terrace cliffs 3 are provided. The components 11 are mounted on the terrace faces 2 at positions contacting with the terrace cliffs 3. Suction holes 4 are provided in the terrace faces 2 or the terrace cliffs 3, so as to fix the components 11 to the mounting stand 1 by sucking.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a component inspection tray using a probe and a component inspection method using the tray.

  Conventionally, there is a method for inspecting a plurality of parts in a state where the parts are arranged on an inspection table in the product inspection. For example, when inspecting a rod-like or linear part, a technique is known in which a groove-like fixing part is formed on an inspection table and the part is placed inside the fixing part (see Patent Document 1).

Japanese Unexamined Patent Publication No. 01-097877

  By the way, when the inspection items of the parts are appearance and surface color, it is easy to inspect multiple parts by embedding cameras, color sensors, etc. around the parts or the bottom of the fixed part. It becomes. On the other hand, when inspecting the electrical characteristics and mechanical characteristics of a part using a probe (probe needle, probe needle), the probe is brought close to and in contact with each part of the part. Interference may occur. For example, when the tip of the probe is brought into contact with a terminal area (land) provided on the surface of the component, a portion other than the tip of the probe may interfere with the uneven shape of the component. Such interference can be eliminated by arranging the individual parts apart. However, if the layout interval between individual parts is increased, the size of the inspection table increases and the amount of movement of the probe increases, so that the inspection efficiency can be reduced. Moreover, the space for installing the inspection table becomes large, and the space utilization efficiency can be reduced.

  In one aspect, the objective is to improve inspection efficiency.

  In one aspect, the component inspection tray is provided with a mounting table and a suction port. The mounting table is formed in a terrace shape having a terrace surface and a terrace cliff, and a plurality of parts to be inspected by a probe are placed on the terrace surface at a position in contact with the terrace cliff. The suction port is provided on the terrace surface or the terrace cliff, and sucks and fixes the component to the mounting table.

  Inspection efficiency can be improved.

It is a perspective view of a component inspection tray. It is a figure which shows the structure of an inspection apparatus typically. It is a typical longitudinal cross-sectional view of a mounting base. It is a typical perspective view which expands and shows the tip of a probe. It is a flowchart for demonstrating a component inspection method. It is a perspective view which shows the components inspection tray as a comparative example.

  Hereinafter, a component inspection tray and a component inspection method as embodiments will be described with reference to the drawings. However, the embodiment described below is merely an example, and there is no intention of excluding various modifications and technical applications that are not explicitly described in the embodiment. That is, the present embodiment can be variously modified without departing from the spirit thereof (for example, by combining the embodiment and the modified examples).

[1. Constitution]
FIG. 1 is a perspective view of the component inspection tray 10. The component inspection tray 10 is a pedestal on which the component 11 is placed in order to stably fix and hold the position of the component 11 when the component 11 is inspected with a probe. The component inspection tray 10 is provided with a plurality of placement locations so that a plurality of components 11 can be placed simultaneously. When the shape of the component 11 is a long shape, the shape of the placement location is also formed in a long groove shape corresponding to the shape of the component 11. In the present embodiment, as shown in FIG. 1, a component inspection tray 10 provided with six mounting locations corresponding to a long-shaped component 11 is illustrated.

  FIG. 2 is a diagram schematically showing the configuration of the inspection apparatus 20 including the component inspection tray 10. The inspection device 20 is provided with a mounting part 12, a probe part 8, and an imaging part 17. The mounting unit 12 is a part to which the component inspection tray 10 is attached. A movable mounting unit stage 13 is provided below the mounting unit 12. By operating the mounting unit stage 13, the position and angle of the component inspection tray 10 attached to the mounting unit 12 (for example, a horizontal position, a rotation angle about the vertical axis, etc.) can be changed.

  The probe unit 8 is a part for bringing the probe close to and in contact with various parts of the component 11. The probe unit 8 is provided with a probe needle 9 (probe), a probe arm 14 and a probe stage 15. As shown in FIG. 3, the probe needle 9 is attached to the lower surface side of the probe arm 14 and protrudes obliquely downward from the tip of the probe arm 14. The tip of the probe needle 9 is bent so as to be directed vertically downward. The proximal end portion of the probe arm 14 is supported by a movable probe stage 15. By operating the probe stage 15, the position and angle of the probe needle 9 attached to the probe arm 14 (for example, the position in the vertical direction, the rotation angle around the vertical axis, and the extending direction of the probe arm 14 are parallel). The angle of rotation around the axis can be changed.

  The imaging unit 17 is a part for confirming the appearance and arrangement state of the component 11, the proximity between the probe and the component 11, and the contact state with an image. The imaging unit 17 is provided with a camera 16 (imaging device) that photographs the upper surface side of the component inspection tray 10. A movable camera stage 18 is provided below the camera 16. By operating the camera stage 18, the position and angle of the camera 16 (for example, a horizontal position, a vertical position, etc.) can be changed.

  Each of the mounting unit stage 13, the probe stage 15, and the camera stage 18 is connected to an electronic control device (not shown), and each operation state is controlled according to a predetermined program. The electronic control unit contains a processor (CPU, central processing unit), memory (main memory, main storage unit), auxiliary storage unit, interface unit, recording medium drive, etc., and can be connected to each other via an internal bus. Is done.

  The processor is a central processing unit including a control unit (control circuit), an arithmetic unit (arithmetic circuit), a cache memory (register group), and the like. The memory is a storage device for storing programs and data during work, and includes ROM (Read Only Memory) and RAM (Random Access Memory). Auxiliary storage devices, on the other hand, are memory devices that store data and firmware that are retained over a longer period of time than memory, and include non-volatile memory such as flash memory and EEPROM (Electrically Erasable Programmable Read-Only Memory). It is. The interface device controls input / output (I / O) between the electronic control device and the outside.

  The recording medium drive is a reading device that reads information recorded and stored in a recording medium (removable medium) such as an optical disk or a semiconductor memory. The program executed by the electronic control device may be recorded and stored in the memory, or may be recorded and stored in the auxiliary storage device. Alternatively, the program may be recorded and stored on a recording medium, and the program written on the recording medium may be read into the electronic control device via the recording medium drive.

The structure of the component inspection tray 10 will be described in detail. In the component inspection tray 10, a portion on the upper surface side on which the component 11 is placed is referred to as a placement table 1.
As shown in FIG. 1, the outline of the mounting table 1 has a terrace shape. The mounting table 1 is provided with a terrace surface 2 and a terrace cliff 3. There are a plurality of terrace surfaces 2 and terrace cliffs 3. The height of the terrace surface 2 is set to a different height from the adjacent terrace surface 2, and the height of each terrace surface 2 increases monotonically from the lowest terrace surface toward the highest terrace surface. The height is set. Preferably, the height of each terrace surface 2 is set such that the height increases stepwise (that is, the height difference between adjacent terrace surfaces 2 is constant).

  The terrace surface 2 is a surface-shaped part (for example, planar shape, curved surface shape, etc.) that contacts the lower surface of the component 11, and is generally horizontal. On the other hand, the terrace cliff 3 is a surface-shaped part (for example, planar shape, curved surface shape, etc.) which contacts the side surface of the component 11, and is generally vertical. However, the specific surface shapes of the terrace surface 2 and the terrace cliff 3 can be changed as appropriate in accordance with the shape of the component 11 in contact therewith.

  As shown in FIG. 3, a passage for sucking and fixing the component 11 to the mounting table 1 is provided inside the component inspection tray 10. The suction port 4, which is the exit portion of the passage, is disposed on either the terrace surface 2 or the terrace cliff 3. The suction port 4 is disposed at a position in contact with the component 11 on the surface of the terrace surface 2 or the terrace cliff 3. Reference numeral 19 in FIGS. 1 and 3 denotes a pump connection port 19 connected to a suction pump (not shown). By sucking air with the suction pump, the component 11 is sucked to the mounting table 1, and the position of the component 11 is stably fixed and held.

  A convex portion 5 is projected from an end of the terrace surface 2 connected to the terrace cliff 3 on the lower side. As shown in FIG. 3, the convex portion 5 has a shape in which a protruding corner portion where the terrace surface 2 and the terrace cliff 3 are in contact protrudes vertically upward. In addition, you may form the convex part 5 along the extension direction of the components 11 mounted in the mounting base 1, and may form as a protrusion. By providing the convex portion 5, the component 11 placed on the terrace surface 2 is prevented from falling. In addition, an inclined surface 6 is formed at a protruding corner portion where the top surface of the convex portion 5 and the terrace cliff 3 below the convex portion 5 are in contact with each other. The inclined surface 6 is a portion that forms a surface that is inclined with respect to both the top surface of the convex portion 5 and the terrace cliff 3 below the convex portion 5. Thus, the workability of placing and removing the component 11 is improved by chamfering the protruding corner portion.

  A concave portion 7 is formed on an end side of the terrace surface 2 connected to the upper terrace cliff 3. As shown in FIG. 3, the concave portion 7 is a portion having a shape in which a corner portion where the terrace surface 2 and the terrace cliff 3 contact is recessed toward the inside of the mounting table 1. In addition, you may extend the recessed part 7 along the extension direction of the components 11 mounted in the mounting base 1, and you may make it groove shape. By providing the concave portion 7, the component 11 placed on the terrace surface 2 is less likely to interfere with the corner portion, and the component 11 easily comes into surface contact with the terrace surface 2 and the terrace cliff 3.

  FIG. 4 is an enlarged perspective view showing the distal end portion of the probe needle 9. In the present embodiment, for each of the plurality of probe needles 9, it is assumed that an inspection for measuring dark current is performed by bringing the tip into contact with the land 21 of the component 11. At the time of inspection, the position and angle of the probe arm 14 are controlled so that each of the plurality of probe needles 9 contacts a different land. The pressure when the tip of the probe needle 9 is pressed against the land 21 is controlled to a predetermined pressure.

[2. flowchart]
FIG. 5 is a flowchart for explaining the inspection method of the component 11 by the probe needle 9. First, as shown in FIG. 3, a mounting table 1 formed in a terrace shape having a terrace surface 2 and a terrace cliff 3 is prepared (step A1). The shape of the mounting table 1 is preferably a shape having a convex portion 5. The convex portion 5 is formed at the corner of the terrace surface 2 and the terrace cliff 3. Preferably, the inclined surface 6 is provided on the convex portion 5. The inclined surface 6 has a surface shape that is inclined with respect to both the top surface of the convex portion 5 and the terrace cliff 3 below the convex portion 5. More preferably, a recess 7 is provided at the corner of the terrace surface 2 and the terrace cliff 3.

  Subsequently, the component 11 is mounted on the mounting table 1 (step A2). At this time, the side surface of the component 11 is brought into surface contact with the terrace cliff 3, and the bottom surface (lower surface) of the component 11 is brought into surface contact with the terrace surface 2. Further, the suction pump connected to the pump connection port 19 is operated to suck air from the suction port 4, thereby sucking and fixing the component 11 to the mounting table 1 (step A 3). Thereafter, the probe stage 15 is controlled so that the tip of the probe needle 9 is in contact with the land 21 of the component 11, and the inspection with the probe needle 9 is performed (step A4).

[3. Action, effect]
(1) In this embodiment, the mounting table 1 is formed in a terrace shape, and the component 11 is mounted on each terrace surface 2. In addition, the component 11 placed on the terrace surface 2 is fixed at a position where the side surface contacts the terrace cliff 3. Thereby, the occurrence of interference between the probe needle 9 and the component 11 (for example, interference between the jumper wire 22 of the component 11 adjacent to the component 11 to be inspected by the probe needle 9 and the probe arm 14) can be prevented. .

  In addition, when the layout which made the position of each component 11 different in the longitudinal direction is employ | adopted like the comparative example shown in FIG. 6, the above interference can be prevented. However, increasing the layout interval of the individual components 11 increases the size of the mounting table 1 and increases the moving distance of the probe needle 9, thereby reducing the inspection efficiency. Moreover, since the space for installing the mounting table 1 becomes large, it is necessary to prepare an inspection apparatus 20 having a large size of the mounting portion 12, and space utilization efficiency decreases. On the other hand, in this embodiment, the moving distance of the probe needle 9 can be shortened, and the inspection efficiency can be improved. Moreover, since the space for installing the mounting table 1 is small, the inspection can be performed using the compact inspection device 20, and the space utilization efficiency can be improved.

  Further, by fixing the part 11 in contact with the terrace surface 2 and the terrace cliff 3, it is possible to stabilize the placement posture and placement state of the part 11 to be inspected. Occurrence of inspection defects due to misalignment can be suppressed. Therefore, inspection efficiency can be improved. Further, when the component 11 is placed on the mounting table 1, the terrace cliff 3 functions as a member (ruler) that provides a reference position for positioning the component 11. Therefore, the operator can easily execute the operation of placing the component 11 at the correct position, and the workability can be improved.

  (2) In this embodiment, the convex part 5 is provided in the edge connected to the lower terrace cliff 3 among the terrace surfaces 2. By providing the convex portion 5 on the component inspection tray 10, it is possible to prevent the component 11 placed on the terrace surface 2 from falling or sliding, and to improve the workability of placing and removing the component 11. . Therefore, inspection efficiency can be improved.

  (3) In the present embodiment, the inclined surface 6 is formed at the protruding corner portion where the top surface of the convex portion 5 and the terrace cliff 3 below the convex portion 5 are in contact. Thus, by chamfering the protruding corner portion between the top surface of the convex portion 5 and the terrace cliff 3, the workability of placing and removing the component 11 can be improved, and the inspection efficiency can be improved. Can do.

  (4) In this embodiment, the recessed part 7 is provided in the edge connected to the upper terrace cliff 3 among the terrace surfaces 2. Thus, by providing the recessed part 7 in the connection location of the terrace surface 2 and the upper terrace cliff 3, the interference between the component 11 and the corner portion can be prevented, and the positioning accuracy of the component 11 is improved. be able to. Therefore, inspection efficiency can be improved.

[4. Addendum]
The following additional notes are disclosed with respect to embodiments including the following modifications.
(Appendix 1)
A stage that is formed in a terrace shape having a terrace surface and a terrace cliff, and a plurality of parts that are inspected by a probe are placed on the terrace surface at a position where the parts contact the terrace cliff,
A component inspection tray comprising a suction port provided on the terrace surface or the terrace cliff, and sucking and fixing the component to the mounting table.
(Appendix 2)
Supplementary note 1, characterized in that it comprises a projecting portion that protrudes from an end connected to the terrace cliff on the lower side of the terrace surface and prevents the parts placed on the terrace surface from falling. Parts inspection tray.
(Appendix 3)
The component inspection tray according to claim 2, further comprising an inclined surface that forms an inclined surface with respect to both the top surface of the convex portion and the terrace cliff below the convex portion.
(Appendix 4)
The component inspection tray according to any one of appendices 1 to 3, further comprising a recess formed by recessing an end connected to the terrace cliff on the upper side of the terrace surface.

(Appendix 5)
Prepare a mounting table formed in a terrace shape with terrace surface and terrace cliff,
A plurality of parts to be inspected with a probe are placed on the terrace surface at a position in contact with the terrace cliff,
A component inspection method, wherein the component is sucked and fixed to a suction port provided on the terrace surface or the terrace cliff.
(Appendix 6)
Protruding from the edge connected to the terrace cliff on the lower side of the terrace surface, and providing a convex portion on the mounting table to prevent the parts placed on the terrace surface from falling. The part inspection method according to Appendix 5.
(Appendix 7)
The component inspection method according to appendix 6, wherein an inclined surface that forms a surface inclined with respect to both the top surface of the convex portion and the terrace cliff below the convex portion is provided on the mounting table. .
(Appendix 8)
The component inspection according to any one of appendices 5 to 7, wherein a concave portion formed by concavely providing an end connected to the terrace cliff on the upper side of the terrace surface is provided in the mounting table. Method.

[5. Modified example]
In the above-described embodiment, the case where the shape of the component 11 is a long shape has been described in detail, but the specific shape of the component 11 is not limited to this. For example, the part 11 may have a cubic shape or a rectangular parallelepiped shape, or may have a cylindrical shape, a spherical shape, or an elliptical spherical shape. Moreover, in the above-mentioned embodiment, although the components 11 are adjacently arranged in the short side direction of a long shape, the specific layout of the components 11 is not limited to this. For example, the parts 11 may be arranged adjacent to each other in the long side direction of the long shape.

DESCRIPTION OF SYMBOLS 1 Mounting stand 2 Terrace surface 3 Terrace cliff 4 Suction port 5 Convex part 6 Inclined surface 7 Concave part 8 Probe part 9 Probe needle (probe)
DESCRIPTION OF SYMBOLS 10 Component inspection tray 11 Component 12 Mounting part 13 Mounting part stage 14 Probe arm 15 Probe stage 16 Camera 17 Imaging part 18 Camera stage 19 Pump connection port 20 Inspection apparatus 21 Land 22 Jumper wire

Claims (5)

A stage that is formed in a terrace shape having a terrace surface and a terrace cliff, and a plurality of parts that are inspected by a probe are placed on the terrace surface at a position where the parts contact the terrace cliff,
A component inspection tray comprising a suction port provided on the terrace surface or the terrace cliff, and sucking and fixing the component to the mounting table. 2. A projection provided from an end connected to the terrace cliff on the lower side of the terrace surface and provided with a convex portion for preventing the component placed on the terrace surface from falling. The component inspection tray described. The component inspection tray according to claim 2, further comprising an inclined surface that forms an inclined surface with respect to both the top surface of the convex portion and the terrace cliff below the convex portion. The component inspection tray according to any one of claims 1 to 3, further comprising a recess formed by recessing an end connected to the terrace cliff on the upper side of the terrace surface. Prepare a mounting table formed in a terrace shape with terrace surface and terrace cliff,
A plurality of parts to be inspected with a probe are placed on the terrace surface at a position in contact with the terrace cliff,
A component inspection method, wherein the component is sucked and fixed to a suction port provided on the terrace surface or the terrace cliff.

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