TWI544220B - Electrical inspection device - Google Patents

Description

Electrical inspection device

The present invention relates to an electrical inspection apparatus for electrically inspecting a circuit pattern by bringing an electrical contact into contact with an electrical contact provided on a circuit pattern of a circuit board.

Since the previous time, it is determined whether the circuit pattern formed on the circuit substrate is good according to the presence or absence of electrical conduction. In this case, the electrical contact is brought into contact with the electrical contact of the circuit pattern disposed on the circuit substrate for electrical inspection. (For example, refer to Patent Document 1). In the substrate inspection device (electricity inspection device), the main camera that moves integrally with the inspection jig captures the platform positioning mark and the substrate positioning mark provided on the transfer platform, and the auxiliary camera attached to the transfer platform is imaged and set in the inspection. Fixture positioning mark. Further, the relative positional relationship between the substrate and the inspection jig is automatically determined based on the mark image captured in this manner, and the inspection of the substrate is performed.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2000-55971

However, in the prior electrical inspection apparatus, there is a problem in that the processing time is changed by confirming the position of the substrate and the inspection jig by the main camera and the auxiliary camera, and the process of bringing the substrate into contact with the electrical contact. It is long and easy to cause errors in the position of the substrate and the electrical contacts.

The present invention has been completed in order to cope with the above problems, and an object thereof is to provide an electric power The electrical inspection apparatus is configured to simultaneously recognize and inspect the position of the circuit pattern, thereby shortening the processing time and improving the positioning accuracy of the circuit pattern and the electrical contact. In the following description of the constituent elements of the present invention, in order to facilitate the understanding of the present invention, the symbols of the corresponding portions of the embodiments are described in parentheses, but the constituent elements of the present invention are not limited to being interpreted as being implemented. The symbol of the form indicates the composition of the corresponding part.

In order to solve the above problems, the electrical inspection apparatus according to the present invention is characterized in that the electrical continuity inspection has a plurality of first circuit patterns (11b) each having a first electrical contact group (11c) fixed thereto. a plurality of first circuit patterns arranged in a circuit board (11) having a pitch; and an electrical inspection jig (20a, 30a, 40a, 50a) having a plurality of first circuits N sets of first electrical contact groups (25) in which N sets of first electrical contact groups of the N first circuit patterns in the pattern are simultaneously contacted, and N sets of first electrical contact groups move to the next The manner of the position of the circuit pattern is linearly moved in order with respect to the circuit board, and each time the movement is performed, the N sets of the first electrical contact groups are brought into contact with the N sets of the first electrical contact groups to sequentially check the plural a first circuit pattern; and an image recognition camera (26, 36, 46, 56) disposed on the electrical inspection jig and moving together with the electrical inspection jig to sequentially identify the plurality of the plurality of inspections to be inspected Position of the first circuit pattern; each moving distance in which the electrical inspection jig is sequentially moved is set to plural When the first circuit pattern is inspected while the electrical inspection jig is moving, the image recognition camera checks the first circuit pattern by the electrical inspection jig. In the process, the first circuit pattern that is inspected later by the electrical inspection fixture is identified.

In this case, the above value N is an integer value of 1 or more. Specifically, for example, when the value N is "1", the first electrical contact group corresponds to the first electrical contact group belonging to one first circuit pattern. Further, when the value N is "2", the first electrical contact group corresponds to the first electrical contact group belonging to the two first circuit patterns. Further, when the electric inspection jig is sequentially moved relative to the circuit board, the moving distance is "1", and the plurality of first The circuit patterns have the same distance between each other. If the value N is "2", the distance between the plurality of first circuit patterns is twice.

Moreover, the first circuit pattern which is inspected later by the electrical inspection jig is, for example, the first circuit pattern inspected by the next movement. Further, the circuit pattern to be inspected may be the first circuit pattern inspected by the next next or next movement even if it is not the first circuit pattern inspected by the next movement.

In the present invention configured as described above, since the electrical inspection jig moves in units of N times the distance between the first circuit patterns, the inspection of the first circuit pattern by the electrical inspection jig is completed and the electric power is checked. After the next movement of the inspection jig, the first electrical contact group and the image recognition camera respectively oppose the specific first circuit pattern. Therefore, when the image recognition camera is positioned on the front side in the moving direction when the electrical inspection jig moves relative to the circuit board, and the first electrical contact group is positioned on the rear side, the first circuit pattern can be sequentially confirmed. The first circuit pattern is inspected one by one in the position side. Further, when the image recognition camera inspects the circuit pattern by the contact of the first electrical contact group with the first electrical contact group, the first circuit that is inspected by the first electrical contact group is identified. pattern. Therefore, the position of the first circuit pattern by the image recognition camera and the inspection of the first circuit pattern by the first electrical contact group are simultaneously performed, and the processing time is shortened.

Moreover, since the distance by which the electrical inspection jig is moved with respect to the circuit board is set to N times (integer multiple) of the distance between the first circuit patterns, after the image recognition camera recognizes the specific first circuit pattern, The distance by which the electrical inspection jig is moved is minimized before the inspection of the first circuit pattern. Moreover, the accuracy of positioning of the first circuit pattern and the first electrical contact group is also improved.

Further, in the present invention, as described above, when the value N is "1", the one set of the electrical contact groups is in contact with the first electrical contact group of the one first circuit pattern, and the first one is inspected one by one. The circuit pattern recognizes the position of the first circuit pattern one by one with the camera for image recognition. Further, when the value N is "2", the first electrical contact group of the two sets and the first electrical connection of the two first circuit patterns are connected. The point groups are simultaneously contacted, so that the first circuit pattern can be inspected simultaneously in units of two. Further, in this case, when the image recognition camera is disposed in the vicinity of one set of the first electrical contact groups, the image recognition camera recognizes the position of every other first circuit pattern.

Further, in the present invention, in the first process before the electrical inspection jig starts moving, only the position of the first circuit pattern by the image recognition camera is recognized, and the electrical inspection jig is made. In the last process of ending the movement, only the inspection of the first circuit pattern by the first electrical contact group is performed. Further, in the present invention, when the first circuit pattern is inspected while the electrical inspection jig moves, the image recognition camera is in the process of inspecting the first circuit pattern by the electrical inspection jig, and is identified by electrical properties. The first circuit pattern that is inspected after the jig is inspected means that the first circuit pattern is inspected by the electrical inspection jig during the initial processing and the last processing, and the image recognition camera is used. Identification of the first circuit pattern.

Further, another aspect of the electrical inspection device according to the present invention is characterized in that the first electrical contact group is located at the center of the first electrical contact group at the position of the first electrical contact group (O1) The distance between O2, O1', O2') and the center position (O, O') of the image recognition camera when the first circuit pattern is recognized along the moving direction of the electrical inspection jig is the plurality of first An integer multiple of the distance between circuit patterns (P).

In this case, the position of the image recognition camera does not need to be particularly such that the fixed point of the first circuit pattern is located at the center of the image captured by the image recognition camera, as long as the image recognition camera is at the position where the first circuit pattern can be recognized. Just fine. Therefore, the position at which the image recognition camera is set becomes a range having a slight width. In other words, even if the fixed point of the first circuit pattern is located at a position offset from the center of the image captured by the image recognition camera, the fixed point is in the captured image when the first circuit pattern is captured. The same position can be.

Therefore, the image recognition camera can set the set position in a range in which the fixed point can be captured. Further, the image recognition camera may be provided at a position close to the circuit board or at a position away from the circuit board. According to the present invention, a camera for image recognition can be provided The position has a certain degree of freedom, and the interval between the set position of the image recognition camera and the set position of the plurality of electrical contacts is adjusted to be an integral multiple of the distance between the first circuit patterns.

Further, another aspect of the electrical inspection apparatus according to the present invention is characterized in that a reference mark (11d) is provided in the first circuit pattern, and the image recognition camera captures the position identification area (26c, 26c) including the reference mark. '), and the position of the first circuit pattern is identified. According to the present invention, the position recognition area including the reference mark captured by the image recognition camera can be a region having a narrow area with respect to the first circuit pattern, so that the position of the image recognition camera can be further provided with a degree of freedom. Further, the interval between the set position of the image recognition camera and the set position of the electrical contact group is adjusted to be an integral multiple of the distance between the first circuit patterns.

Further, another aspect of the electrical inspection device according to the present invention is characterized in that a plurality of second circuit patterns (11b) are arranged on the circuit board with a fixed distance therebetween, and the plurality of second circuit patterns (11b) are The second electrical contact group (11c) is further provided in parallel with the plurality of first circuit patterns arranged on the straight line, and the electrical inspection jig further has N second circuits belonging to the plurality of second circuit patterns. The N sets of the second electrical contact groups (25) in which the N sets of the second electrical contact groups of the pattern are simultaneously contacted, and the N sets of the second electrical contact groups and the N are made each time the movement with respect to the circuit substrate is performed. The second electrical contact group is in contact with each other, and a plurality of second circuit patterns are sequentially inspected simultaneously with the plurality of first circuit patterns. Thereby, the first and second circuit patterns arranged in a plurality of rows are inspected at the same time, and the inspection efficiency of the circuit board is improved.

Further, in this case, the first and second circuit patterns arranged in a plurality of rows are simultaneously inspected, but the distance between the electrical inspection jigs and the movement of the circuit substrate is connected by the moving direction of the electrical inspection jig. Since the number of the first electrical contact groups is determined, even if the second electrical contact group is disposed in a direction orthogonal to the moving direction of the electrical inspection jig, the movement of the electrical inspection jig is not performed. The spacing is affected. Further, the interval between the second electrical contact group and the image recognition camera may be set according to the structure of the electrical inspection jig, but is preferably set to be the same distance from the plurality of second circuit patterns.

Further, another aspect of the electrical inspection apparatus according to the present invention is characterized in that the image recognition camera (26) is provided in parallel with the first electrical contact group so as to be opposite to the circuit substrate. Sex check fixture (20a). According to the present invention, since the distance between the image recognition camera and the first electrical contact group is substantially the same with respect to the circuit board, the interval between the image recognition camera and the first electrical contact group is accurately adjusted. The length of the setting becomes easy. Further, since the position of the image recognition camera is close to the position of the circuit board, the recognition of the circuit pattern by the image recognition camera becomes accurate.

Further, another aspect of the electrical inspection device according to the present invention is characterized in that a through hole (32a, 33a) is provided in a portion of the electrical inspection jig (30a) opposed to the circuit substrate, and the image recognition camera is provided. (36) is disposed on the opposite side of the through hole in the electrical inspection jig. In this case, the image recognition camera may be disposed outside the through hole in the electrical inspection jig, or may partially protrude to the outside. According to the present invention, even when there is no space for providing an image recognition camera inside or on the side of the electrical inspection jig, an image recognition camera can be provided. Further, it is only necessary to provide a through hole in the vicinity of the portion where the first electrical contact group is located in the electrical inspection jig, so that the structure of the electrical inspection jig can be made simple.

Further, another aspect of the electrical inspection apparatus of the present invention is characterized in that the image recognition camera (46) is provided on the side of the electrical inspection jig (40a). According to the present invention, it is not necessary to provide a space for the image recognition camera in the electrical inspection jig, so that the electrical inspection jig can be miniaturized or the structure can be simplified.

Further, another aspect of the electrical inspection apparatus of the present invention is characterized in that the image recognition camera (56) is provided on the side of the electrical inspection jig (50a) via the positioning mechanism (57). According to the present invention, since the position adjustment of the image recognition camera can be performed by the positioning means, even if the setting of the image recognition camera does not become an accurate installation position, the image recognition camera can be easily installed. Further, in the present invention, since it is not necessary to provide a space for the image recognition camera in the electrical inspection jig, it is possible to reduce the size and structure of the electrical inspection jig.

10‧‧‧Electrical inspection device

11‧‧‧ circuit board

11a‧‧‧Substrate

11b‧‧‧ circuit pattern

11c‧‧‧Electrical contacts

11d‧‧‧ benchmark mark

12‧‧‧Mobile devices

13a‧‧‧X-axis orbit

13b‧‧‧X-axis orbit

14‧‧‧X-axis installation department

14a‧‧‧Sliding section

14b‧‧‧Sliding section

14c‧‧‧Y-axis orbit

14d‧‧‧Y-axis orbit

15‧‧‧Y-axis installation department

15a‧‧‧Sliding section

15b‧‧‧Installation Department

17‧‧‧Support Department

17a‧‧‧ Side frame

17b‧‧‧ Side frame

20‧‧‧movable department

20a‧‧‧Electrical inspection fixture

21‧‧‧Base plate

21a‧‧‧through holes

22‧‧‧Intermediate board

23‧‧‧ Lower board

24‧‧‧Upper pillar

24a‧‧‧lower pillar

25‧‧‧Electrical contacts

25a‧‧‧ Cable

25A‧‧‧Electrical contact group

25B‧‧‧Electrical contact group

25C‧‧‧Electrical contact group

25D‧‧‧Electrical contact group

26‧‧‧Image recognition camera

26a‧‧‧Lens Department

26b‧‧‧ camera body

26c‧‧‧Location identification area

26c'‧‧‧ Location Identification Area

27‧‧‧Electrical Inspection Control Department

27a‧‧‧ base

27b‧‧‧Electrical parts

27c‧‧‧Connecting terminal

28‧‧‧Electrical Inspection and Processing Department

28a‧‧‧Information Communication Cable

30a‧‧‧Electrical inspection fixture

31‧‧‧Base plate

31a‧‧‧through hole

32‧‧‧Intermediate board

32a‧‧‧through hole

33‧‧‧lower board

33a‧‧‧through hole

36‧‧‧Image recognition camera

36a‧‧‧Lens Department

36b‧‧‧ camera body

40a‧‧‧Electrical inspection fixture

41‧‧‧Base plate

42‧‧‧Intermediate board

43‧‧‧lower board

46‧‧‧Image recognition camera

46a‧‧‧Lens Department

46b‧‧‧ camera body

46c‧‧‧Mirror

46d‧‧‧Mirror

47‧‧‧Connecting components

50a‧‧‧Electrical inspection fixture

51‧‧‧Base plate

56‧‧‧Image recognition camera

57‧‧‧ Positioning mechanism

57a‧‧‧X-axis moving part

57b‧‧‧Z-axis moving part

A‧‧‧distance

B‧‧‧distance

C‧‧‧distance

A‧‧‧ position

A'‧‧‧ position

B‧‧‧ position

B'‧‧‧ position

C‧‧‧ position

C'‧‧‧ position

D‧‧‧ position

D'‧‧‧ position

E‧‧‧ position

H'‧‧‧ position

O‧‧‧ central location

O‧‧ Center

O'‧‧‧ central location

O'‧‧‧ Center

O1‧‧‧ central location

O1‧‧ Center

O1'‧‧‧ central location

O1'‧‧‧ Center

O2‧‧‧ central location

O2‧‧ Center

O2'‧‧‧ central location

O2'‧‧‧ Center

P‧‧‧ spacing

R‧‧‧ arrow

X‧‧‧ direction

Y‧‧‧ direction

Z‧‧‧ direction

Fig. 1 is a schematic configuration diagram showing a main part of an electrical inspection device according to a first embodiment of the present invention.

2 is a perspective view showing a circuit board on which a circuit pattern is formed.

Fig. 3 is a plan view showing a circuit pattern.

4 is a cross-sectional view showing a state in which a circuit board is inspected by an electrical inspection jig to which an image recognition camera is attached.

Fig. 5 is an explanatory view showing a positional relationship between an electrical contact group and an image recognition camera.

Fig. 6 is an explanatory view showing a procedure of movement of the image recognition camera and the electrical inspection jig.

FIG. 7 is an explanatory view showing a positional relationship between an electrical contact group and an image recognition camera included in the electrical inspection device according to the modification of the first embodiment.

FIG. 8 is an explanatory view showing a procedure of movement of an image recognition camera and an electrical inspection jig included in the electrical inspection device according to the modification of the first embodiment.

FIG. 9 is a cross-sectional view showing a state in which a circuit board is inspected by an electrical inspection jig to which an image recognition camera is attached according to a second embodiment of the present invention.

FIG. 10 is a cross-sectional view showing a state in which a circuit board is inspected by an electrical inspection jig to which an image recognition camera is attached according to a third embodiment of the present invention.

FIG. 11 is a cross-sectional view showing a state in which a circuit board is inspected by an electrical inspection jig to which an image recognition camera is attached according to a fourth embodiment of the present invention.

(First embodiment)

Hereinafter, a first embodiment of the present invention will be described using the drawings. Fig. 1 is a schematic configuration diagram showing a main part of an electrical inspection device 10 of the embodiment. The electrical inspection device 10 is for inspecting a circuit pattern provided on a circuit substrate 11 as an inspection object. 11b (refer to Figure 2) for proper conduction and insulation. As shown in FIG. 2, the circuit board 11 is formed on a thin plate-shaped substrate 11a, and a plurality of circuit patterns 11b are arranged on a straight line at regular intervals in front, rear, left and right, and a plurality of electrical properties are provided in each circuit pattern 11b. The contact 11c (see Fig. 4) and one reference mark 11d (see Fig. 3).

The circuit pattern 11b is formed in a square shape in which the length of one side is set to 12 mm, and the length of the gap between the adjacent two circuit patterns 11b is set to 0.5 mm. Therefore, the length P between the center positions of the adjacent two circuit patterns 11b, that is, the pitch P is 12.5 mm. Further, a plurality of electrical contacts 11c are dispersedly disposed in a portion of the circuit pattern 11b where the circuit is formed, and the reference mark 11d is provided at a corner of the circuit pattern 11b where the circuit is not formed as shown in FIG. nearby.

The electrical inspection device 10 includes: a setting device (not shown) that is provided with a circuit substrate 11; a moving device 12; a movable portion 20 that is moved along the surface of the circuit substrate 11 by the driving of the moving device 12; The inspection processing unit 28 is connected to the movable unit 20 via the information transmission cable 28a.

Although not shown in the drawings, the apparatus for arranging the circuit board 11 includes a pair of X-axis rails which are arranged in parallel at intervals and in the X-axis direction (the direction indicated by the arrow X in the left-right direction of FIG. 1). a pair of Y-axis rails, which are erected on a pair of X-axis rails in a movable state, and extend in the Y-axis direction (the direction before and after the arrow 1 and the direction indicated by the arrow Y); and a pair The gripping portions (four in total) are movably mounted to a pair of Y-axis rails, respectively. Further, by the driving of the driving portion, the pair of Y-axis rails are independently moved along a pair of X-axis rails, and the four gripping portions are independently moved along any one of the pair of Y-axis rails. Therefore, the circuit board 11 can be supported by gripping the four corners of the circuit board 11 by the four grip portions.

The moving device 12 includes a pair of X-axis rails 13a and 13b which are arranged in parallel along the X-axis direction, and an X-axis mounting portion 14 which is mounted on the X-axis rails 13a and 13b and is movable in the X-axis direction. Ground mounting; and Y-axis mounting portion 15, which is mounted to the X-axis mounting portion 14 and is s Move in the direction of the axis. The X-axis mounting portion 14 is configured by sliding portions 14a and 14b slidably engaged with the X-axis rails 13a and 13b, respectively, and a pair of Y-axis rails 14c and 14d which are erected in parallel at intervals. The X-axis mounting portion 14 is moved along the X-axis rails 13a and 13b by driving of a driving device (not shown).

The Y-axis mounting portion 15 is composed of a mounting member that is attached to the Y-axis rails 14c and 14d and movable in the Y-axis direction, and includes a plate-shaped sliding portion 15a that is mounted on the Y-axis rails 14c and 14d, and is mounted. The mounting portion 15b of the movable portion 20. The Y-axis mounting portion 15 is moved along the Y-axis rails 14c, 14d by driving of a driving device (not shown). Further, a Z-axis movable portion and a turning shaft (not shown) are provided in the mounting portion 15b of the Y-axis mounting portion 15, and the movable portion 20 is coupled to the mounting portion 15b via the turning shaft and the Z-axis movable portion.

The Z-axis movable portion is moved in the Z-axis direction (the direction in the upper-lower direction of FIG. 1 and indicated by the arrow Z) by driving by a driving device (not shown), and the rotating shaft is driven by a driving device (not shown). The drive is rotated on the horizontal plane in the direction around the axis (the direction indicated by the arrow R in Fig. 1). Therefore, the movable portion 20 is moved in the X-axis direction, the Y-axis direction, and the Z-axis direction by the driving of each driving device, and is rotated about the turning axis. Moreover, the support portion 17 shown in FIG. 4 is attached to the attachment portion 15b, and the support portion 17 is movable in the vertical direction. The support unit 17 supports the electrical inspection jig 20a, and is configured by a frame including left and right side frame portions 17a and 17b that are disposed to face each other in a state of maintaining a space, and the side frame portions 17a. The connection portion (not shown) to which the end portion is connected after 17b, and the front portion is open.

The movable unit 20 includes an electrical inspection jig 20a, an image recognition camera 26, and an electrical inspection control unit 27. As shown in FIG. 4, the electrical inspection jig 20a is provided with a plurality of electrical components in an assembly in which three rectangular plates of the base plate 21, the intermediate plate 22, and the lower plate 23 are assembled by the upper pillar 24 and the lower pillar 24a. The contact member 25 is constructed. In addition, although the electrical inspection jig 20a is shown in FIG. 1, this electrical inspection jig 20a is shown in a mode, and is slightly different from the electrical inspection jig 20a shown in FIG.

The base plate 21 is formed as a frame in which a substantially rectangular through hole 21a is bored in the center portion. The shape is fixed to the side frame portions 17a and 17b of the support portion 17. The intermediate plate 22 is formed as a thinner and smaller plate than the base plate 21, and is fixed to the four corners on the lower surface of the substrate 21 via the four upper pillars 24. The lower plate 23 is formed as a plate smaller than the intermediate plate 22, and is fixed to the four corners on the lower surface of the intermediate plate 22 via the four lower pillars 24a.

Therefore, the assembly including the base plate 21, the intermediate plate 22, and the lower plate 23 moves up and down together with the support portion 17 when the support portion 17 moves up and down. Further, a plurality of through holes are bored in the mutually opposing positions of the intermediate plate 22 and the lower plate 23 except for one end side (the right side in FIG. 1), and the plurality of through holes are respectively inserted in the plurality of through holes Both ends of the plurality of electrical contacts 25 are provided. The arrangement of the plurality of through holes of the intermediate plate 22 and the plurality of through holes of the lower plate 23 is the same as the arrangement of the electrical contacts 11c formed on the circuit board 11, so that the arrangement of the plurality of electrical contacts 25 is also electrically The configuration of the sexual contact 11c is the same.

The electrical contacts 25 are disposed so as to correspond to the electrical contacts 11c of the adjacent two circuit patterns 11b. Further, an end portion (lower end portion) of the flexible cable 25a is electrically connected to an upper end portion of the electrical contact member 25, and an end portion (upper end portion) of the cable 25a is penetrated through the base plate 21 The inside of the hole 21a extends above the substrate 21. The lower end portion of the electrical contact member 25 protrudes downward from the lower surface of the lower plate 23, and the protruding end of the lower end portion of the electrical contact member 25 abuts against the electrical contact of the circuit substrate 11 by the movement of the movable portion 20. 11c.

The lower end portion of the electrical contact member 25 is formed into a thin needle shape. When the movable portion 20 is in contact with the electrical contact 11c of the circuit substrate 11, the electrical contacts 25 are energized, thereby The magnitude of the resistance value determines whether or not the circuit pattern 11b of the circuit board 11 is properly turned on. This is based on the resistance value setting inspection determination value of the circuit board 11 of the good product, and is determined based on the ratio of the inspection determination value. In other words, in the case of the conduction check, if the detected resistance value is equal to or less than the specific value of the inspection determination value, it is judged to be a good product, and if it is equal to or higher than the specific ratio, it is determined to be a defective product. In the case of the insulation inspection, if the detected resistance value is equal to or higher than the inspection determination value, it is judged to be a good product, and if it is equal to or less than the specific ratio, it is determined to be a defective product.

Further, mounting holes are formed in the mutually opposing positions of the end portions of the intermediate plate 22 and the lower plate 23, respectively. Further, the image recognition camera 26 fixes the lower end portion of the lens portion 26a in the attachment hole of the lower plate 23, and fixes the camera body 26b in the attachment hole of the intermediate plate 22 to be incorporated into the electrical inspection jig 20a. The image recognition camera 26 is disposed at a position forward when the electrical inspection jig 20a is moved for electrical inspection. also. As shown in FIG. 5, the image recognition camera 26 is disposed at a distance from a plurality of electrical contacts 25.

The electrical contact member 25 includes two sets of electrical contact groups 25A and 25B corresponding to the electrical contacts 11c of the two circuit patterns 11b adjacent to the left and right, and the position recognition area photographed by the image recognition camera 26 The distance a between the center position O of 26c and the center position O1 of the electrical contact group 25A is set to 25 mm which is twice the distance P between the circuit patterns 11b. Therefore, the distance b between the center position O of the position identifying region 26c and the center position O2 of the electrical contact group 25B is 37.5 mm which is three times the distance P between the circuit patterns 11b.

The electrical inspection control unit 27 includes a plurality of electrical components 27b disposed on the upper surface of the plate-shaped base 27a. The base body 27a is formed of a printed wiring board, and is fixed to the mounting portion 15b by a screw member (not shown) so as to face the upper surface of the base plate 21. Further, a plurality of conductive portions are provided on the lower surface of the base 27a in the same arrangement as the rear end portion of the cable 25a. Each of the conductive portions is in contact with the rear end portion of each of the cables 25a when the support portion 17 is located above, and is separated from the rear end portion of each of the cables 25a when the support portion 17 is positioned below.

The electrical component 27b is arranged in a lattice shape on the upper surface of the base 27a, and includes a CPU (Central Processing Unit), a ROM (Read Only Memory), and a ROM, which are required for electrical inspection. A circuit or device such as a RAM (Random Access Memory) or a timer. Moreover, the specific electrical component 27b is connected via the printed wiring of the base 27a. At the corner of one of the bases 27a, the front end of the information transmission cable 28a is connected via the connection terminal 27c, and the electrical inspection processing unit 28 is connected to the end of the information transmission cable 28a. The electrical inspection processing unit 28 performs The electrical inspection control unit 27 does not perform other controls required for the electrical inspection. Further, the electrical inspection processing unit 28 is connected to peripheral devices, for example, an operation panel for the operator to perform each operation of the electrical inspection device 10, or a display panel such as a display panel for displaying the inspection result, or X, Y, Z axis axis control equipment.

When the electrical inspection apparatus 10 configured in this manner performs the conduction and insulation inspection of the circuit board 11, the right side of the circuit board 11 shown in FIG. 6 is turned to the left side, and the rear side is continued (upward in FIG. 6). The inspection of the circuit pattern 11b in units of 2 is performed in the forward direction (the lower row in Fig. 6). At the time of the continuity check, first, the circuit board 11 is placed in the setting device. Then, by driving the respective driving devices, the movable portion 20 is moved relative to the circuit board 11, and the plurality of reference marks 11d are imaged by the image recognition camera 26, whereby the orientation of the circuit board 11 is adjusted to make the circuit patterns 11b. The arrangement is along the moving direction of the movable portion 20.

Then, by driving each of the driving devices, the image recognition camera 26 is moved to the upper side of the second circuit pattern 11b (position A in FIG. 6) after moving to the circuit board 11. Then, the position recognition region 26c including the reference mark 11d is imaged by the image recognition camera 26 to recognize the position of the reference mark 11d. The position of the reference mark 11d is compared with the reference position data obtained as the reference position in advance, and if there is no difference between the position of the reference mark 11d and the reference position data, it is determined that it is in an appropriate state. If a difference occurs, the position of the circuit board 11 is finely adjusted. At this time, the electrical contact groups 25A, 25B are located on the outer side of the right end of the circuit board 11.

Then, the electrical inspection jig 20a and the image recognition camera 26 are raised, and the movable portion 20 linearly moves only the distance (position B) twice the distance P between the circuit patterns 11b to the left side. Thereafter, the electrical inspection jig 20a and the image recognition camera 26 are lowered, and the front ends of the respective electrical contacts 25 are brought into contact with the electrical contacts 11c, respectively. In this state, the electrical inspection of the first two circuit patterns 11b of the circuit board 11 is performed. Further, at the same time, the image recognition camera 26 captures the position recognition area 26c from the right side of the fourth circuit pattern 11b. And the position of the reference mark 11d is identified. Thereby, the position of the circuit pattern 11b to be inspected next is recognized as appropriate.

In this case, each drive unit moves in accordance with a command signal transmitted from the CPU, and the electrical contact 25 operates in accordance with a command signal transmitted from the CPU. In other words, based on the command signal transmitted from the CPU, the connection between the cable 25a and the conductive portion is switched, and the specific electrical contact 25 is connected to the opposite electrical contact 11c. Thereafter, the inspection signal is input to the circuit pattern 11b via the electrical contact 25. The input inspection signal is taken out from the electrical contact 25 in a state of being connected to the other electrical contact 11c, and is input to the measurement unit, whereby the measurement unit measures the resistance value.

When the electrical inspection of the next two circuit patterns 11b in the circuit board 11 is performed, the electrical inspection jig 20a and the image recognition camera 26 are raised by driving the respective driving devices again. . Then, the movable portion 20 is linearly moved to the left side by only twice the distance P between the circuit patterns 11b, and then the electrical inspection jig 20a and the image recognition camera 26 are lowered (position C). Then, the electrical inspection of the third and fourth circuit patterns 11b from the right is performed, and the position recognition region 26c of the sixth circuit pattern 11b from the right is taken after the photographing, and the reference mark 11d is recognized. The location.

Further, the electrical inspection jig 20a and the image recognition camera 26 are linearly moved to the positions D and E in order, and the above operations are sequentially repeated to perform inspection of all the circuit patterns 11b in the circuit board 11. In addition, when moving from the rear to the inspection of the circuit pattern 11b of the preceding line, the electrical inspection jig 20a and the image recognition camera 26 are moved forward (forward side) to correspond to the circuit pattern 11b. After the distance P, the above operation is performed.

As described above, the electrical inspection device 10 of the present embodiment is provided with the image recognition camera 26 in the electrical inspection jig 20a including the electrical contact groups 25A and 25B including the plurality of electrical contacts 25. Further, in order to perform electrical inspection of the two circuit patterns 11b, the electrical contact 25 is linearly moved, and the image recognition camera 26 is linearly moved for recognition of the position of the circuit pattern 11b. The electrical inspection fixture 20a moves The distance (moving distance) is set to be twice the distance P between the circuit patterns 11b. Therefore, when the electrical inspection jig 20a linearly moves with respect to the circuit board 11 in accordance with the set distance therebetween, the electrical contact groups 25A and 25B and the image recognition camera 26 respectively face the specific circuit pattern 11b.

Further, the image recognition camera 26 is disposed such that the distance between the center position O of the photographed position recognizing region 26c and the center position O1 of the electric contact group 25A becomes twice the distance P between the circuit patterns 11b. 25mm. Therefore, first, when the position of the circuit pattern 11b is recognized, the processing is performed, and the electrical inspection of the two circuit patterns 11b including the circuit pattern 11b whose position has been recognized is sequentially performed, and the circuit pattern to be inspected next. Identification of the location of 11b. Therefore, the processing time is shortened.

Further, since the distance between the movements of the electrical inspection jig 20a is set to be twice the distance P between the plurality of circuit patterns 11b, the image recognition camera 26 can be electrically contacted after recognizing the specific circuit pattern 11b. The device group 25A, 25B electrically checks the circuit pattern 11b including the circuit pattern 11b before the distance of the electrical inspection jig 20a is minimized, whereby the accuracy of the positioning of the circuit pattern 11b and the electrical contact groups 25A, 25B is also improve.

Further, in the present embodiment, the reference mark 11d is provided in the circuit pattern 11b, and the image recognition camera 26 captures the position recognition area 26c including the reference mark 11d, thereby identifying the position of the circuit pattern 11b. Therefore, the image recognition camera 26 only needs to capture a part of the circuit pattern 11b, so that the installation position can have a degree of freedom, and the positional relationship between the image recognition camera 26 and the electrical contact groups 25A, 25B can be adjusted to a circuit. The pattern 11b is an integer multiple of P from each other. Further, since the lens unit 26a of the image recognition camera 26 is arranged in parallel with the plurality of electrical contacts 25 to mount the camera body 26b in the electrical inspection jig 20a, the image recognition camera 26 is opposed to the circuit substrate 11 The position is made closer, so that the recognition of the circuit pattern 11b by the image recognition camera 26 becomes accurate.

(Variation of the first embodiment)

Fig. 7 shows an electrical inspection device including a modification of the first embodiment. The image recognition camera 26 (the position recognition area 26c' is shown) has a positional relationship with the two sets of electrical contact groups 25C and 25D including a plurality of electrical contacts 25. The electrical contact groups 25C and 25D are disposed in front and rear so as to correspond to the two circuit patterns 11b adjacent to each other, and the image recognition camera 26 is disposed on the left side of the front electrical contact group 25D. Further, the distance c between the center position O' of the position recognizing area 26c' and the center position O1' of the electric contact group 25C and the center position O2' of the electric contact group 25D is set to be the same as the circuit pattern 11b. The pitch P is the same as 12.5 mm. The other components of the electrical inspection device of this modification are the same as those of the electrical inspection device 10. Therefore, the same portions as those of the above-described electrical inspection device 10 will be described below using the same reference numerals as the above-described electrical inspection device 10.

In the case where the electrical inspection apparatus of the variation of the configuration is used to perform the conduction inspection of the circuit board 11, the circuit pattern 11b of the circuit board 11 from the right end to the left side and the previous two units is shown in FIG. The inspection is performed from the trailing side (upward of Fig. 8) to the forward side (the lower row of Fig. 8). In the same manner as in the above-described embodiment, first, after the circuit board 11 is placed in the installation device, the movable portion 20 is moved relative to the circuit board 11, and the image recognition camera 26 captures a plurality of images. The reference mark 11d thereby adjusts the orientation of the circuit board 11 so that the arrangement of the circuit patterns 11b is along the moving direction of the movable portion 20.

Next, the image recognition camera 26 is moved to the upper side of the circuit pattern 11b of the circuit board 11 from the right end of the second row (position A' of FIG. 8). Then, the image recognition camera 26 captures the position of the reference mark 11d by capturing the position recognition area 26c' including the reference mark 11d. At this time, the electrical contact group 25C is located on the outer side of the right end of the last row of the circuit board 11, and the electrical contact group 25D is located on the outer side of the right end of the circuit board 11 from the row of the second row.

Next, the electrical inspection jig 20a and the image recognition camera 26 are raised, and the movable portion 20 is linearly moved to the left side only by the same distance (position) from the circuit pattern 11b. B'). Thereafter, the electrical inspection jig 20a and the image recognition camera 26 are lowered, and the front ends of the respective electrical contacts 25 are brought into contact with the electrical contacts 11c, respectively. In this state, the electrical inspection of the first two circuit patterns 11b of the circuit board 11 is performed. At the same time, the image recognition camera 26 captures the position of the reference mark 11d from the position recognition area 26c' in which the number of lines from the second line to the second line is the second line pattern 11b. Thereby, the position of the circuit pattern 11b to be inspected next is recognized as appropriate.

Moreover, when the electrical inspection of the next two circuit patterns 11b in the circuit board 11 is performed, the electrical inspection jig 20a and the image recognition camera 26 are again raised. Then, the movable portion 20 is linearly moved to the left side only by the same distance from the circuit pattern 11b by the same distance, and then the electrical inspection jig 20a and the image recognition camera 26 are lowered (position C'). Then, the electrical check of the circuit pattern 11b from the right of the second row and the second row from the right row to the second row is performed, and the number of lines from the back row is the second row. The position of the reference mark 11d is recognized from the position recognition area 26c' of the third circuit pattern 11b from the right.

Further, the electrical inspection jig 20a and the image recognition camera 26 are linearly moved from the position D' to H' in order, and the above operations are sequentially repeated to perform inspection of all the circuit patterns 11b in the circuit board 11. In this case, when the inspection of the circuit pattern 11b in the forward direction is performed, the electrical inspection jig 20a and the image recognition camera 26 are moved forward (forward). After the circuit pattern 11b is twice as long as P, the above operation is performed.

According to the electrical inspection apparatus of the above-described embodiment, the position of all the circuit patterns 11b in one of the two rows of circuit patterns 11b along the moving direction of the electrical inspection jig 20a and the image recognition camera 26 is recognized. Since the inspection is performed, the recognition of the circuit pattern 11b by the image recognition camera 26 becomes more accurate. The other functions of the electrical inspection device of this modification are the same as those of the above embodiment. Moreover, as another variation, two electrical contact groups may be disposed on the left and right sides and the front and rear sides (total 4 )). In this case, the processing shown in Fig. 6 is performed every two lines in the front-rear direction. According to this variation, a highly efficient electrical inspection can be achieved.

(Second embodiment)

FIG. 9 shows an electrical inspection jig 30a included in the electrical inspection device according to the second embodiment of the present invention, and an electrical inspection of the circuit substrate 11 by the image recognition camera 36 provided in the electrical inspection jig 30a. State. In the electrical inspection jig 30a, the through holes 32a and 33a are respectively formed at positions opposite to each other at the end portion side portions of the intermediate plate 32 and the lower plate 33, and a figure is fixed above the through holes 32a and 33a. The image recognition camera 36 is used. The image recognition camera 36 is such that the lens portion 36a is positioned in the through hole 31a of the base plate 31, and the camera body 36b is fixed above the base plate 31 by a mounting member (not shown). The other components of the electrical inspection device according to the second embodiment are the same as those of the electrical inspection device 10. Therefore, the same portions as those of the above-described electrical inspection device 10 are denoted by the same reference numerals as those of the above-described electrical inspection device 10.

Further, the distance between the image recognition camera 36 and the two sets of the electrical contact groups 25A and 25B (the distance in the moving direction of the electrical inspection jig 30a) is also set to be the same as the image recognition camera 26 described above. The distance between the two sets of electrical contact groups 25A, 25B is the same. Further, the electrical inspection of the circuit board 11 can be performed by the same method as the first embodiment described above by the electrical inspection device of the second embodiment. According to the present embodiment, it is not necessary to provide a space for providing the image recognition camera 36 or a member or structure for mounting inside the electrical inspection jig 30a, as long as it is plural in the intermediate plate 32 and the lower plate 33. The through holes 32a and 33a may be provided in the vicinity of the portion where the electrical contact 25 is located, so that the structure of the electrical inspection jig 30a can be made simple. The other operational effects of the present embodiment are the same as those of the electrical inspection device 10 described above.

Further, as a variation of the electrical inspection device according to the second embodiment, the positional relationship between the image recognition camera 36 and the electrical contact group may be set as the image recognition camera 26 and the two groups shown in FIG. The positional relationship of the electrical contact groups 25C, 25D. Further, as another change For example, two electrical contact groups (four in total) may be disposed on the left and right sides.

(Third embodiment)

FIG. 10 shows an electrical inspection of the circuit board 11 by the electrical inspection jig 40a included in the electrical inspection device according to the third embodiment of the present invention and the image recognition camera 46 provided in the electrical inspection jig 40a. State. In the electrical inspection apparatus, the image recognition camera 46 is not provided inside the electrical inspection jig 40a, but is provided on the side. Therefore, the mounting hole or the through hole is not provided in the intermediate plate 42 and the lower plate 43, and the electrical inspection jig 40a is formed in a small size as a whole. Further, the image recognition camera 46 includes a camera body 46b and a lens portion 46a that extends downward from the camera body 46b and extends in the horizontal direction, and two mirrors 46c and 46d are built in the lens portion 46a. .

The mirror 46c reflects the light entering from below and changes the traveling direction by 90 degrees to advance toward the mirror 46d side. The mirror 46d reflects the light entering from the mirror 46c and changes the traveling direction by 90 degrees to advance toward the camera body 46b side. Thereby, the image recognition camera 46 can capture the upper surface of the circuit substrate 11. Further, the camera body 46b is coupled to a specific portion of the base plate 41 by a connecting member 47. The other components of the electrical inspection device according to the second embodiment are the same as those of the electrical inspection device 10. Therefore, the same portions as those of the above-described electrical inspection device 10 are denoted by the same reference numerals as those of the above-described electrical inspection device 10.

Furthermore, in the present embodiment, the distance between the position of the mirror 46c of the image recognition camera 46 and the two sets of the electrical contact groups 25A and 25B (the distance along the moving direction of the electrical inspection jig 40a) The distance between the image recognition camera 26 and the two sets of electrical contact groups 25A and 25B is set to be the same. According to the electrical inspection device of the third embodiment, the electrical inspection of the circuit board 11 can be performed by the same method as in the first embodiment. According to the present embodiment, since it is not necessary to provide a space for the image recognition camera 46 in the electrical inspection jig 40a, it is possible to reduce the size and structure of the electrical inspection jig 40a. The other operational effects of the present embodiment are the same as those of the electrical inspection device 10 described above.

Further, as a variation of the electrical inspection device according to the third embodiment, the positional relationship between the image recognition camera 46 and the electrical contact group may be set as the image recognition camera 26 and the group 2 shown in FIG. The positional relationship of the electrical contact groups 25C, 25D. Further, as another modification, two electrical contact groups (four in total) may be disposed on the right and left sides and the front and rear sides.

(Fourth embodiment)

FIG. 11 shows an electrical inspection of the circuit board 11 by the electrical inspection jig 50a included in the electrical inspection device according to the fourth embodiment of the present invention and the image recognition camera 56 provided in the electrical inspection jig 50a. State. In the electrical inspection device, the image recognition camera 56 is coupled to a specific portion of the base plate 51 by the positioning mechanism 57, and is not connected by a connecting member. The positioning mechanism 57 includes an X-axis moving portion 57a that is movable in the X direction with respect to the base plate 51, and a Z-axis moving portion 57b that is movable in the Z direction with respect to the X-axis moving portion 57a. Therefore, the image recognition camera 56 can perform position adjustment in the X direction and the Z direction. The other components of the electrical inspection device according to the fourth embodiment are the same as those of the electrical inspection device according to the third embodiment. Therefore, the same portions as those of the above-described electrical inspection device are denoted by the same reference numerals as those of the above-described electrical inspection device.

Furthermore, in the present embodiment, the position of the mirror 46c of the image recognition camera 46 and the distance between the two sets of the electrical contact groups 25A, 25B by the positioning mechanism 57 (along the electrical inspection jig 40a) The distance in the moving direction is positioned in the same manner as the above-described image recognition camera 26 and the two sets of electrical contact groups 25A and 25B. Further, the electrical inspection of the circuit board 11 can be performed by the same method as the above-described first embodiment by the electrical inspection device according to the fourth embodiment.

According to the present embodiment, the position adjustment of the image recognition camera 56 can be performed by the positioning mechanism 57. Therefore, even if the setting of the image recognition camera 56 is not an accurate installation position, the image recognition camera 56 can be set. It's easy. Further, in the present embodiment, the space for providing the image recognition camera 56 to the electrical inspection jig 50a is not required, so that the electrical inspection jig 50a can be downsized or the structure can be simplified. In addition to this embodiment The other external effects are the same as those of the electrical inspection device 10 described above.

Further, as a variation of the electrical inspection device according to the fourth embodiment, the positional relationship between the image recognition camera 46 and the electrical contact group may be set as the image recognition camera 26 and the two groups shown in FIG. The positional relationship of the electrical contact groups 25C, 25D. Further, as another modification, two electrical contact groups (four in total) may be disposed on the right and left sides and the front and rear sides.

Furthermore, the present invention is not limited to the above embodiment, and can be appropriately changed. For example, in each of the above embodiments or a modification thereof, the plurality of electrical contacts 25 include two sets of electrical contact groups 25A, 25B so as to correspond to the two circuit patterns 11b adjacent to the left and right or the front and rear. Or the electrical contact groups 25C, 25D, or a plurality of electrical contacts 25, including four sets of electrical contact groups, corresponding to the four circuit patterns 11b adjacent to the left and right and the front and rear, but the electrical The contact group may also include only one group, or may also include three or more complex arrays.

Further, in each of the above embodiments, the electrical inspection jig 20a, the image recognition camera 26, and the like are disposed above the circuit board 11, and the electrical inspection of the circuit board 11 is performed from above, but may be performed below the circuit board 11. The electrical inspection jig 20a, the image recognition camera 26, and the like are placed, and the electrical inspection of the circuit board 11 is performed from below. Further, when the electrical inspection device is an apparatus for performing electrical inspection of the circuit board 11 on which the circuit patterns 11b are formed on both front and back sides, the electrical inspection fixtures 20a and the diagrams may be disposed on the upper and lower sides of the circuit board 11, respectively. The image inspection substrate 26 or the like is used to perform electrical inspection of the circuit board 11 from the upper and lower sides. Further, a plurality of image recognition cameras 26 and the like may be provided. In addition, the configuration of the other portions is not limited to the above embodiment, and can be appropriately changed within the technical scope of the present invention.

10‧‧‧Electrical inspection device

11‧‧‧ circuit board

12‧‧‧Mobile devices

13a‧‧‧X-axis orbit

13b‧‧‧X-axis orbit

14‧‧‧X-axis installation department

14a‧‧‧Sliding section

14b‧‧‧Sliding section

14c‧‧‧Y-axis orbit

14d‧‧‧Y-axis orbit

15‧‧‧Y-axis installation department

15a‧‧‧Sliding section

15b‧‧‧Installation Department

20‧‧‧movable department

20a‧‧‧Electrical inspection fixture

26‧‧‧Image recognition camera

27‧‧‧Electrical Inspection Control Department

27a‧‧‧ base

27b‧‧‧Electrical parts

27c‧‧‧Connecting terminal

28‧‧‧Electrical Inspection and Processing Department

28a‧‧‧Information Communication Cable

R‧‧‧ arrow

X‧‧‧ direction

Y‧‧‧ direction

Z‧‧‧ direction

Claims (9)

An electrical inspection device characterized in that the electrical inspection includes the plurality of first circuit patterns of the first electrical contact group and the plurality of first circuit patterns arranged in a line on a straight line The first circuit pattern includes: an electrical inspection jig having N sets of the N sets of first electrical contact groups belonging to the N first circuit patterns among the plurality of first circuit patterns In the first electrical contact group, the N sets of the first electrical contact groups are linearly moved with respect to the circuit board in such a manner as to move to the position of the next first circuit pattern, and each time the movement is performed, The N sets of first electrical contact groups are in contact with the N sets of first electrical contact groups to sequentially inspect the plurality of first circuit patterns; and an image recognition camera is provided in the electrical inspection jig and Moving together with the electrical inspection jig to sequentially identify the positions of the plurality of first circuit patterns to be inspected; and setting the respective moving distances for sequentially moving the electrical inspection jig to the plurality of first circuit patterns N times the pitch When the first circuit pattern is inspected while the electrical inspection jig moves, the image recognition camera identifies the first circuit pattern by the electrical inspection jig, and identifies the electrical inspection by the electrical inspection. a first circuit pattern to be inspected later; a reference mark is provided in the first circuit pattern; and the image recognition camera recognizes the position of the first circuit pattern by capturing a position recognition area including the reference mark . The electrical inspection apparatus of claim 1, wherein the value N is an integer value of 1 or more. The electrical inspection device of claim 1 or 2, wherein the electrical inspection device is The first circuit pattern that is inspected thereafter is the first circuit pattern that is inspected by the next movement. The electrical inspection device according to claim 1 or 2, wherein the first electrical contact group is at a position of the first electrical contact group, a center position of the first electrical contact group, and the identification The distance between the center position of the image recognition camera and the moving direction of the electrical inspection jig in the case of the circuit pattern is an integral multiple of the distance between the plurality of first circuit patterns. The electrical inspection apparatus according to claim 1 or 2, wherein the plurality of second circuit patterns are arranged on the circuit board with a fixed distance therebetween, and the plurality of second circuit patterns are plural and arranged on the straight line The first circuit patterns are parallel and further have a second electrical contact group, and the electrical inspection jig further has N sets of second electrical connections to the N second circuit patterns belonging to the plurality of second circuit patterns. The N sets of the second electrical contact groups that are simultaneously in contact with the point group contact the N sets of the second electrical contact groups and the N sets of the second electrical contact groups each time the movement with respect to the circuit board is performed And the plurality of second circuit patterns are sequentially inspected simultaneously with the plurality of first circuit patterns. The electrical inspection device according to claim 1 or 2, wherein the image recognition camera is disposed in parallel with the first electrical contact group on the electrical inspection fixture so as to be opposite to the circuit substrate Inside. The electrical inspection device according to claim 1 or 2, wherein a through hole is formed in a portion of the electrical inspection jig opposite to the circuit substrate; and the image recognition camera is disposed in the electrical inspection jig The opposite side of the above-mentioned through hole. The electrical inspection device according to claim 1 or 2, wherein the image recognition camera is disposed on a side of the electrical inspection jig. The electrical inspection apparatus according to claim 1 or 2, wherein the image recognition camera is disposed on a side of the electrical inspection jig via a positioning mechanism.