JP7398064B2 - Plate member appearance inspection unit on both sides - Google Patents

Description

The present invention relates to a plate-shaped member double-sided appearance inspection unit for inspecting the appearance, such as the soldering condition, on both sides (front and back sides) of a printed circuit board on which SMT components and discrete components are mounted by soldering, for example.

Conventionally, a visual inspection unit for a plate-shaped member such as a printed circuit board has, for example, a plate-shaped member loader device 51, a plate-shaped member visual inspection device 52, and a plate-shaped member unloader device 55 as shown in FIG. 7 on one conveyance path. It is configured by arranging.
The plate-like member loader device 51 moves a magazine rack 56 storing plate-like members (not shown) such as uninspected printed circuit boards to a predetermined loadable position, and loads the plate-like members onto a transport path (not shown). ).
The plate-shaped member appearance inspection device 52 includes an imaging device (not shown) that images the plate-shaped member transported to the inspection position from above, displays the captured image on a monitor 52a, and uses the image using a dedicated inspection algorithm. The apparatus is configured to automatically inspect the appearance of a plate member.
The plate-like member unloader device 55 stores the plate-like members that have been inspected by the plate-like member appearance inspection device 52 into the magazine rack 56, and also stores the plate-like members stored in the magazine rack 56 when the number of plate members that have been stored in the magazine rack 56 has reached the storable number. The magazine rack 56 is configured to be moved to a position where the magazine rack 56 can be taken out.
The transport path also includes a guide rail (not shown) consisting of a pair of rails, and a plate member set on the guide rail is transported from the plate member loader device 51 to the plate member unloader device 55. A plate-like member conveying means (not shown) is provided.

In double-sided inspection of the appearance of a plate-like member using a plate-like member appearance inspection unit as shown in FIG. The stored magazine rack 56 is set in the plate member loader device 51.
Next, the plate-shaped member loader device 51 sets the plate-shaped member on a guide rail provided on the conveyance path. Next, the plate-like member conveying means conveys the plate-like member to the plate-like member appearance inspection device 52. In the plate-like member appearance inspection device 52, the surface of the plate-like member transported to a predetermined inspection position via the plate-like member transport means is imaged by an imaging device, the captured image is displayed on the monitor 52a, and the image is displayed on the monitor 52a. Performs surface appearance inspection using a dedicated inspection algorithm. Next, the plate-like member conveying means conveys the plate-like member whose surface has been inspected to the plate-like member unloader device 55 . The plate-like member unloader device 55 stores the transported plate-like member in a magazine rack 56 .
Then, the operator takes out the plate-shaped member whose surface has been inspected, which is housed in the magazine rack 56, together with the magazine rack 56.
When inspecting both sides of a plate-like member, it is necessary to store the plate-like member in the magazine rack 56 with the front and back sides reversed, and then repeat the same process.
For this reason, the plate-shaped member visual inspection unit as shown in FIG. 7 has a problem in working efficiency when used for double-sided inspection of the plate-shaped member.

However, conventionally, there is a double-sided inspection unit for the external appearance of a plate-shaped member, which is capable of inspecting both sides of the plate-shaped member in one operation of loading the plate-shaped member into the conveyance path. For example, as shown in FIG. 8, such a plate-shaped member appearance double-sided inspection unit includes a plate-shaped member loader device 51 and a first side (surface) inspection unit of a plate-shaped member 60 on one conveyance path L1. A plate-like member appearance inspection device 52 for use, a plate-like member reversing device 53, a plate-like member appearance inspection device 54 for inspecting the second surface (back side) of the plate-like member 60, and a plate-like member unloader device 55. I have something prepared.
The plate-shaped member reversing device 53 is configured to invert the first surface (front surface) and second surface (back surface) of the plate-shaped member 60 on the conveyance path L1.
In the double-sided external appearance inspection of a plate-like member using the double-sided plate-like member external appearance inspection unit shown in FIG. The rack is set on the plate member loader device 51.
Next, the plate-shaped member loader device 51 loads the plate-shaped member 60 onto a guide rail provided on the transport path L1. Next, the plate-shaped member conveying means conveys the plate-shaped member 60 to the plate-shaped member visual inspection device 52 for inspecting the first surface. In the plate-like member appearance inspection device 52 for first-side inspection, the first side of the plate-like member 60 transported to a predetermined inspection position via the plate-like member transport means is inspected by an image pickup device (not shown) for first-side inspection. (shown in the figure), displays the captured image on the monitor 52a, and performs an external appearance inspection of the first surface using a dedicated inspection algorithm from the image. Next, the plate-like member reversing device 53 reverses the first surface and the second surface of the plate-like member 60. Next, the plate-shaped member conveying means conveys the plate-shaped member 60 to the plate-shaped member visual inspection device 54 for inspecting the second surface. In the plate-like member appearance inspection device 54 for second-side inspection, the second side of the plate-like member 60 transported to a predetermined inspection position via the plate-like member transport means is inspected by an imaging device (inspection device) for second-side inspection. ), the captured image is displayed on the monitor 54a, and an external appearance inspection of the second surface is performed using a dedicated inspection algorithm from the image. Next, the plate-shaped member 60 whose both sides have been inspected is transported to the plate-shaped member unloader device 55 by the plate-shaped member conveying means. The plate-like member unloader device 55 stores the transported plate-like member 60 in a magazine rack.
Then, the operator takes out the plate member 60 that has been inspected on both sides and is housed in the magazine rack together with the magazine rack 56.
The plate-shaped member appearance double-sided inspection unit shown in FIG. 8 can inspect both sides of the plate-shaped member in one operation of loading the plate-shaped member into the conveyance path, improving work efficiency.

However, the double-sided plate-like member appearance inspection unit as shown in FIG. 8 requires two plate-like member appearance inspection apparatuses 52 and 54, which increases the cost of the apparatus. Moreover, there are many devices provided on one conveyance path L1, which increases the length of the conveyance path L1 and increases the installation space in the conveyance direction. As the distance from the plate-like member loader device 51 to the plate-like member unloader device 55 becomes long, the set of magazine racks in the plate-like member loader device 51 and the empty magazine after all the plate-like members 60 are transported. In addition to the work such as removing the rack, the work load on the plate-like member unloader device 55 such as removing the magazine rack in which the plate-like member 60 is stored and setting an empty magazine rack increases.

Further, as another plate-shaped member double-sided inspection unit, for example, as shown in FIG. and a plate-like member unloader device 55, and a plate-like member reversing device (not shown) inside the plate-like member visual inspection device 52'.
In the plate-shaped member appearance double-sided inspection unit of FIG. 9, the first side of the plate-shaped member 60 in an uninspected state is transported from the plate-shaped member loader device 51 to a predetermined inspection position in the plate-shaped member appearance inspection device 52'. After taking an image with an imaging means (not shown) and performing a visual inspection of the first surface, a plate-like member reversing device (not shown) reverses the first and second surfaces of the plate-like member 60 to form a board. The second surface of the shaped member 60 is imaged by an imaging means (not shown), the appearance of the second surface is inspected, and after the appearance inspection of the second surface is carried out, the plate-shaped member 60 that has been inspected on both sides is turned into a plate-shaped member. It is transported to the unloader device 55.

The double-sided plate-shaped member external appearance inspection unit shown in FIG. 9 only requires the same length of the transport path as the one-sided plate-shaped member external appearance inspection unit shown in FIG. 7 .
However, if a plate-like member reversing device (not shown) is provided inside the plate-like member visual inspection device 52', the internal mechanism of the plate-like member visual inspection device becomes complicated and the cost increases. Put it away.
In addition, since the imaging means (not shown) cannot image the second surface until the reversal process to the second surface is completed after imaging the first surface at the inspection position, the time required to complete the inspection is becomes longer and the inspection efficiency deteriorates.

Although it is not a double-sided inspection device, in order to improve inspection efficiency, two conveyance paths are provided in parallel, and one imaging device moves to straddle the conveyance paths to image the plate-shaped member on the two conveyance paths. Plate member appearance inspection apparatuses having such a configuration are disclosed in, for example, the following Patent Documents 1 to 3.

As shown in FIG. 10(a), the plate-like member appearance inspection apparatus disclosed in Patent Document 1 is provided with a conveyance means consisting of a first conveyance lane 71 and a second conveyance lane 72 in one inspection apparatus. . The first transport lane 71 is composed of rails 71a and 71b, and the second transport lane 72 is composed of rails 72a and 72b. Then, as shown in FIGS. 10(b) and 10(c), one inspection head 73 having a camera 73a is moved between two transport lanes 71 and 72, and two prints are made. It is configured to inspect the substrates K1 and K2.

As shown in FIGS. 11(a) and 11(b1) to 11(b5), the plate-like member appearance inspection apparatus disclosed in Patent Document 2 inserts the substrates to be inspected (not shown) from the substrate loading port 81, respectively. When two pallets 82 ₁ and 82 ₂ with fixed The inspection units 86 and 87 simultaneously inspect the substrates on different sides of the set of substrates to be inspected, and the substrates on the first and second transfer lines 84 and 85 are inspected alternately. While a board to be inspected is being inspected, the next set of boards to be inspected is carried into the other transfer line and set at the inspection position, and immediately after the inspection of the board to be inspected on one transfer line is completed, the inspection unit is transferred to the other transfer line. The pallet is moved to an inspection position on the line and inspected, and after the inspection is completed, the pallet on which the substrate to be inspected is fixed is received by the carry-out transport line 88 and sent out from the substrate carry-out port 89.

As shown in FIGS. 12(a) and 12(b), the plate-like member appearance inspection apparatus disclosed in Patent Document 3 includes mounted boards ( (not shown), and a drive that independently drives the first stage 91 and the second stage 92 to move the substrate exchange area S1 and the inspection area S2, respectively. The means 93 and 94 and the mounted board transported to the inspection area S1 are moved in a direction (X direction in FIG. 12) perpendicular to the transport direction (Y direction in FIG. 12) of the first stage 91 and second stage 92. It is configured to include an inspection means 95 that moves and inspects.

Unexamined Japanese Patent Publication No. 2014-10082 Japanese Patent Application Publication No. 2000-12999 Japanese Patent Application Publication No. 2008-34620

However, in the plate-like member appearance inspection apparatus disclosed in Patent Document 1, the first conveyance lane 71 and the second conveyance lane 72 move the printed circuit boards K1 and K2 carried in from the upstream device in one direction toward the downstream side in the X direction. It is configured to be transported. Therefore, in order to perform double-sided inspection, it is necessary to separately install a substrate reversing device and a visual inspection device for inspecting the second side on the transport path in one direction, making it impossible to shorten the installation line length. Furthermore, the cost of the device increases. Moreover, in the plate-like member appearance inspection apparatus disclosed in Patent Document 1, the supply and unloading positions of the printed circuit board (and the magazine for storing the printed circuit board) are different, and therefore the workability is also poor.

Further, the plate-like member appearance inspection apparatus disclosed in Patent Document 2 has a configuration in which the pallets 82 ₁ , 82 ₂ are conveyed in the same direction by the first conveyance line 84 and the second conveyance line 85 (substrates are conveyed from the substrate loading port 81 side). (exit 89 side). Therefore, in order to perform double-sided inspection, it is necessary to separately provide a substrate reversing device and a visual inspection device for inspecting the second side on the transport path in one direction, making it impossible to shorten the installation line length. Moreover, in the board appearance inspection apparatus disclosed in Patent Document 2, the supply and unloading positions of the board to be inspected (and the magazine for storing the board to be inspected) are different, resulting in poor workability.

Further, in the plate-like member appearance inspection apparatus disclosed in Patent Document 3, the transport means 93 and 94 transport a mounted board (not shown) in a reciprocating direction between the board exchange area S1 and the inspection area S2. However, when the first stage 91 and second stage 92 are transported back and forth, inspected mounted boards (not shown) are transported to the board exchange area S1 alternately by the transport means 93 and 94. , it is necessary to carry out the inspected mounted board (not shown) and carry in the uninspected mounted board (not shown) each time, which makes the work complicated.

Furthermore, the plate-shaped member appearance inspection apparatuses disclosed in Patent Documents 1 to 3 cannot inspect both sides of the plate-shaped member in one operation of loading the plate-shaped member into the conveyance path with the device configuration as it is. In order to inspect both sides of a plate-shaped member using the plate-shaped member appearance inspection apparatus disclosed in Patent Documents 1 to 3, the plate-shaped member is first inspected on one side of the plate-shaped member. After the inspection of the surface on one side is completed, the plate-like member is removed, and then the plate-like member is set again in order to inspect the surface on the other side of the plate-like member, and the surface on the other side is It is necessary to remove the plate-shaped member after the inspection is completed, and the work from setting the plate-shaped member in the inspection equipment through the inspection to taking it out after the inspection must be repeated twice, which reduces work efficiency. bad.

In this way, conventional double-sided inspection units for plate-shaped members have problems such as increased equipment cost, longer installation space in the transport direction, increased workload for loading and unloading plate-shaped members, and poor inspection efficiency. Inspecting both sides of a plate-like member in one operation of loading it onto the conveyor path, reducing equipment costs, shortening the installation line length, significantly improving loading/unloading work efficiency, and significantly shortening inspection time. There was no realizable double-sided inspection unit for plate-shaped members.

The present invention has been made in view of the above-mentioned problems, and provides double-sided inspection of plate-shaped members such as printed circuit boards in one operation of loading onto a conveyance path, reduction of equipment costs, shortening of installation line length, and ease of loading and unloading work. An object of the present invention is to provide a double-sided inspection unit for the appearance of a plate-like member, which can simultaneously realize a marked improvement in the inspection time and a significant reduction in the inspection time.

In order to achieve the above object, the plate-like member appearance double-sided inspection unit according to the present invention is provided across two adjacent parallel conveyance paths, and of the two parallel conveyance paths, the X A plate-like member loader device that loads a plate-like member that has not been inspected on both sides and is stored in a magazine rack into a first conveyance path at the coordinate position; A plate-like member loading/unloading section each equipped with a plate-like member unloader device for storing a double-sided inspected plate-like member transported in a direction approaching through a transport path in a magazine rack; a first guide rail consisting of a pair of rails provided along the first conveyance path so as to be close to the input end of the plate-like member set on the first guide rail, and the plate-like member set on the first guide rail being separated from the plate-like member loader device; a second guide rail consisting of a pair of rails provided along the second conveyance path so that one end is close to the receiving end of the plate-like member unloader device; a second conveying means for conveying a plate-like member set on a guide rail in a direction approaching the plate-like member unloader device; and a plate conveyed from the other end of the first guide rail via the first conveying means. plate-like member reversing means for receiving the plate-like member, reversing the front and back sides of the received plate-like member, and setting the plate-like member at the other end of the second guide rail so that the plate member can be transported via the second transport means. a double-sided plate-shaped member reversing unit provided between the plate-shaped member loading/unloading unit and the plate-shaped member reversing unit, and conveyed to an inspection position on the first conveying path by the first conveying means; The uninspected plate-shaped member and the plate-shaped member, which has been inspected on one side and whose uninspected side faces upward, are conveyed to the inspection position on the second conveyance path by the second conveyance means to the first and second conveyance means. a plate-shaped member inspection unit equipped with one imaging device that moves in a direction perpendicular to the longitudinal direction of the path to take an image; the plate-shaped member loader device includes a first magazine rack conveying means; a supply lifter and a second magazine rack conveyance means, the first magazine rack conveyance means being provided at a lower stage and configured to convey the magazine rack in a direction approaching the supply lifter; The supply lifter is configured to be able to move the second magazine rack conveyance means in the vertical direction, and when the second magazine rack conveyance means is located at the lower stage, the supply lifter moves the magazine rack conveyed from the first magazine rack conveyance means. When received and located at the upper stage, the empty magazine rack is configured to be transported in a direction approaching the transfer position, and the plate-like member unloader device includes a third magazine rack transport means, a storage lifter, and a fourth magazine rack. and a conveyance means, the third magazine rack conveyance means being provided at an upper stage and configured to convey an empty magazine rack in a direction approaching the storage lifter, and the storage lifter 3 magazine rack transport means are configured to be movable in the vertical direction, and when the fourth magazine rack transport means is located at the upper stage, the fourth magazine rack transport means receives an empty magazine rack transported from the third magazine rack transport means at a receiving position. , when located at the lower stage, the magazine rack is configured to be transported in a direction approaching the take-out position, and the plate-shaped member loading/unloading section moves from the transfer position in the plate-shaped member loader device to the plate-shaped member unloader device. The present invention is characterized by comprising automatic transfer means for automatically sliding and transferring an empty magazine rack to the receiving position.

Further, in the plate-shaped member appearance double-sided inspection unit of the present invention, the plate-shaped member reversing means is arranged at intervals corresponding to the first guide rail, and is arranged from a pair of rails that guide the plate-shaped member on opposing sides. a third guide rail, a conveying means provided at two locations above and below the pair of rails, and having a conveying section that conveys the plate-like member with the plate-shaped member sandwiched therebetween, and a drive mechanism that drives the conveying section; a plate-like member reversing device comprising: a rotation drive means for rotating the pair of rails and the conveying section 180 degrees around the center of the pair of rails; A traverse plate-shaped member reversing device that reciprocates in a direction perpendicular to the longitudinal direction of the second conveyance path and sets the third guide rail at the other end of the first guide rail and the other end of the second guide rail. Preferably, it comprises means.

Further, in the plate-shaped member appearance double-sided inspection unit of the present invention, the first guide rail and the second guide rail have rails on opposing sides fixed in position, and rails on the opposite side to the opposing sides. are provided so as to be movable in a direction perpendicular to the longitudinal direction of the first and second conveyance paths, and the distance between each pair of rails can be adjusted, and the third guide rail is arranged such that one rail is in a position. It is preferable that the pair of rails be fixed, the other rail movable in a direction perpendicular to the longitudinal direction of the first and second conveyance paths, and that the interval between the pair of rails be adjustable.

According to the present invention, it is possible to inspect both sides of a plate-shaped member such as a printed circuit board in a single loading operation into a conveyance path, to suppress equipment costs, to shorten the length of an installation line, to greatly improve workability in loading and unloading, and to significantly shorten inspection time. A plate-like member appearance double-sided inspection unit that can be shortened at the same time is obtained.

FIG. 2 is an explanatory diagram conceptually showing the configuration of the plate-like member appearance double-sided inspection unit according to the first embodiment of the present invention from the top side. FIG. 2 is an explanatory diagram conceptually showing the moving directions of the plate-like member and the magazine rack in the plate-like member external appearance double-sided inspection unit of FIG. (b) is a diagram showing the moving direction of the magazine rack when the plate-shaped member loader device is viewed from the side, and (c) is a diagram showing the moving direction of the magazine rack when the plate-shaped member loader device is viewed from the side. It is a figure showing the moving direction of a magazine rack. FIG. 2 is an explanatory diagram showing the configuration of the plate-shaped member loading/unloading section and the moving process of the magazine rack in the plate-shaped member appearance double-sided inspection unit of FIG. 1, where (a) shows a state in which the magazine rack is loaded into the plate-shaped member loader device , (b) is a diagram showing the magazine rack raised by the supply lifter, (c) is a diagram showing the magazine rack transported to the transfer position, (d) is a diagram showing the magazine rack being moved to the plate-shaped member unloader. (e) shows the magazine rack moved to the storage lifter; (f) shows the magazine rack lowered by the supply lifter and moved in the take-out direction. be. FIG. 2 is an explanatory diagram showing a schematic configuration of the first and second conveyance means in the plate-like member appearance double-sided inspection unit of FIG. (c) is a side view of the main part of the first transport means, (c) is a view of the second transport means seen from the plate-shaped member loading/unloading part side, and (d) is a side view of the main part of the second transport means. FIG. 2 is an explanatory diagram illustrating a schematic configuration of a main part of a plate-like member inspection section in the plate-like member appearance double-sided inspection unit of FIG. 1, viewed from the side of a plate-like member reversing section. FIG. 2 is an explanatory diagram showing a schematic configuration of a plate-like member reversing means provided in a plate-like member reversing section in the plate-like member appearance double-sided inspection unit of FIG. This is a diagram seen from the side. FIGS. 2A and 2B are diagrams showing an example of a conventional plate-like member appearance inspection unit, in which (a) is a perspective view of a plate-like member loader device, (b) is a front view of the plate-like member appearance inspection device, and (c) is a plate-like member unloader. A perspective view of the device; (d) is a perspective view of a magazine rack used in the plate-like member loader device and the plate-like member unloader device. FIG. 2 is an explanatory diagram conceptually showing a configuration example of a conventional plate-like member appearance double-sided inspection unit from the top side. It is an explanatory view conceptually showing another example of composition in a conventional plate-like member appearance double-sided inspection unit from the top side. It is explanatory drawing which shows the structure of the plate-shaped member visual inspection apparatus of patent document 1, (a) is a top view, (b) is a front view, and (c) is a side view. FIG. 2 is an explanatory diagram showing the configuration of the plate-like member appearance inspection apparatus of Patent Document 2, in which (a) is a schematic plan view and (b1) to (b5) are diagrams showing the inspection operation. FIG. 3 is an explanatory diagram showing the configuration of the plate-like member appearance inspection apparatus of Patent Document 3, in which (a) is a plan view and (b) is a side view.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a plate-like member appearance double-sided inspection unit of the present invention will be described with reference to the drawings.
First embodiment
FIG. 1 is an explanatory diagram conceptually showing the configuration of a double-sided inspection unit for appearance of a plate-like member according to a first embodiment of the present invention from the top side.

The plate-shaped member appearance double-sided inspection unit of this embodiment includes a plate-shaped member loading/unloading section 11, a first guide rail 12, a first conveying means 13, a second guide rail 14, and a second conveying means 15. , a plate-like member inspection section 16, and a plate-like member reversing section 17.
The plate-shaped member loading/unloading unit 11 is provided across two parallel conveyance paths L1 and L2 that are adjacent to each other, and places a plate at the X coordinate position of the first conveyance path L1 of the two parallel conveyance paths L1 and L2. A plate-like member loader device 11a and a plate-like member unloader device 11b are provided at the same X-coordinate position in the second transport path L2 as the first transport path L1. It is configured to include an automatic transfer means 11c that automatically transfers magazine racks.
The basic configurations of the plate-like member loader device 11a and the plate-like member unloader device 11b are the plate-like member loader device 51 and the plate-like member unloader device 55 described using FIGS. 7(a) and 7(c). Almost the same.
More specifically, as shown in FIGS. 3(a), 3(b), and 3(c), the plate-shaped member loader device 11a includes a first magazine rack conveying means 11a1, a supply lifter 11a2, It has a second magazine rack conveyance means 11a3. The first magazine rack transport means 11a1 is provided at the lower stage and is configured to transport the magazine rack 56 in a direction approaching the supply lifter 11a2. The supply lifter 11a2 is configured to be able to move the second magazine rack transport means 11a3 in the vertical direction. When the second magazine rack transport means 11a3 is located at the lower stage, the second magazine rack transport means 11a3 receives the magazine rack 56 transported from the first magazine rack transport means 11a1, and when it is located at the upper stage, the second magazine rack transport means 11a3 transfers the empty magazine rack 56 in a direction approaching the passing position. is configured to be transported to
Then, as shown in FIGS. 3(a), 3(b), and 3(c), and as shown by the arrow in FIG. 2(b), the plate-like member loader device 11a The magazine rack 56 in which the plate-shaped members 60 are stored is moved to a predetermined loadable position, and the plate-shaped members 60 are loaded into the transport path L1, and the loading of all the plate-shaped members 60 is completed and the rack is empty. The magazine rack 56 is moved to the transfer position by the automatic transfer means 11c.

Further, the plate-like member unloader device 11b includes, for example, a third magazine rack transport means 11b1, a storage lifter 11b2, and a fourth magazine rack transport means 11b3, as shown in FIGS. 3(a) and 3(d). ,have. The third magazine rack transport means 11b1 is provided in the upper stage and is configured to transport the empty magazine rack 56 in a direction approaching the storage lifter 11b2. The storage lifter 11b2 is configured to be able to move the third magazine rack transport means 11b3 in the vertical direction. When located at the upper stage, the fourth magazine rack transport means 11b3 receives the empty magazine rack 56 transported from the third magazine rack transport means 11b1, and when located at the lower stage, the fourth magazine rack transport means 11b3 moves the magazine rack 56 in a direction approaching the take-out position. configured to be transported. The fifth magazine rack conveyance means 11b4 is configured to receive the magazine rack 56 conveyed from the fourth magazine rack conveyance means 11b3 and convey it to the take-out position.
As shown in FIGS. 3(d), 3(e), and 3(f), the plate-like member unloader device 11b also has an automatic transfer means 11c as shown by the arrow in FIG. 2(c). The empty magazine rack 56 set at the receiving position of the plate-shaped member 60 is moved to the storage position of the plate-shaped member 60, and the plate-shaped member 60 that has been inspected by the plate-shaped member appearance inspection device 52 is placed in the magazine. The magazine rack 56 is stored in the rack 56, and when the number of plate members 60 stored in the magazine rack 56 reaches the storable number, the magazine rack 56 is moved to a position where it can be taken out.

The automatic transfer means 11c is provided across the plate-like member loader device 11a and the plate-like member unloader device 11b, and transfers the empty magazine rack 56, which has been moved to the transfer position by the plate-like member loader device 11a, into a plate-like member. It is configured to be slid to a receiving position in the member unloader device 11b.
More specifically, the automatic delivery means 11c includes, for example, a delivery roller 11c1, as shown in FIG. 3(f).
The transfer roller 11c1 is arranged at a transfer position in the plate-like member loader device 11a and a receiving position in the plate-like member unloader device 11b, with the longitudinal direction being the conveyance direction of the second magazine rack conveyance means 11a3 or the fifth magazine rack conveyance means 11b4. Multiple pieces are provided in parallel to each other.
A delivery roller 11c1 provided in the plate-shaped member loader device 11a is rotated by a motor (not shown), and transfers empty magazine racks to plate-shaped members as shown in FIGS. 3(c) and 3(d). It is configured to be transported in a direction approaching a receiving position in the unloader device 11b.
With such a configuration, the plate-shaped member loading/unloading unit 11 can store empty magazine racks 56 as shown in FIGS. 3(a) to 3(f), and as indicated by the arrows in FIG. move in the direction.

The first guide rail 12 is composed of a pair of rails 12a and 12b provided along the first conveyance path L1 so that one end is close to the input end of the plate-shaped member loader device 11a.

For example, as shown in FIGS. 4(a) and 4(b), the first conveyance means 13 includes conveyor belts 13a1 and 13a2 provided at two upper and lower locations inside the pair of rails 12a and 12b, respectively. , has a drive mechanism (not shown) equipped with a wheel 13b that spans the respective conveyor belts 13a1 and 13a2, and a motor that rotationally drives the wheel 13b. The plate-like member 60 is conveyed in a direction away from the plate-like member loader device 11a while being sandwiched therebetween.

The second guide rail 14 is comprised of a pair of rails 14a and 14b provided along the second transport path L2 so that one end is close to the receiving end of the plate-shaped member unloader device 11b.

For example, as shown in FIGS. 4(c) and 4(d), the second conveying means 15 includes conveying belts 15a1 and 15a2 provided at two upper and lower locations inside the pair of rails 14a and 14b, respectively. , has a drive mechanism (not shown) equipped with a wheel 15b extending over each of the conveyor belts 15a1 and 15a2, and a motor that rotationally drives the wheel 15b. The plate-like member 60 is conveyed in a direction approaching the plate-like member unloader device 11b while being sandwiched therebetween.

The plate-shaped member inspection unit 16 is provided between the plate-shaped member loading/unloading unit 11 and the plate-shaped member reversing unit 17, and includes, for example, one imaging device 16a and an imaging device, as shown in FIG. It has a device holding member 16b and an imaging device moving means 16c. In FIG. 5, reference numeral 16d indicates a support supporting the imaging device moving means 16c.
The imaging device holding member 16b holds the imaging device 16a and is attached to be movable in a direction perpendicular to the first and second transport paths L1 and L2 by the imaging device moving means 16c.
The imaging device moving means 16c has a ball screw mechanism section 16c1 and a motor 16c2, and rotates the ball screw mechanism section 16c1 in the longitudinal direction (perpendicular to the first and second transport paths L1 and L2). The imaging device holding member 16b holding the imaging device 16a is configured to be able to reciprocate along the direction (direction).
With such a configuration, the plate-shaped member inspection section 16 can inspect the plate-shaped member 60, whose both sides have not been inspected, which has been transported by the first transport means 13 to the inspection position on the first transport path L1, and the second transport means 15. The plate member 60, which has been inspected on one side and whose uninspected side faces upward, is transported to the inspection position on the second conveyance path L2 in a direction perpendicular to the longitudinal direction of the first and second conveyance paths L1 and L2. In addition, one imaging device 16a can move and take images.

In addition, in the first guide rail 12 and the second guide rail 14, the rails 12b and 14a on the side opposite to each other are fixed in position, and the rails 12a and 14b on the opposite side to the opposite side are connected to the first and second conveyance paths. It is provided movably in a direction perpendicular to the longitudinal direction of L1 and L2, and is configured to be able to adjust the distance between the pair of rails 12a and 12b and 14a and 14b, respectively.
Other configurations are substantially the same as the plate-like member appearance inspection apparatus 52 described using FIG. 7(b).

The plate-shaped member reversing unit 17 receives, for example, the plate-shaped member 60 conveyed via the first conveyance means 13 from the other end of the first guide rail 12, and converts the front and back surfaces of the received plate-shaped member 60. A plate-like member reversing means 17a is provided to reverse the plate-like member and set it on the other end of the second guide rail 14 so that it can be transported via the second transport means 15.
More specifically, the plate-like member reversing means 17a includes, for example, as shown in FIG. 6, a plate-like member reversing device 17a1 and a plate-like member reversing device traverse means 17a2.
The plate-like member reversing device 17a1 includes, for example, a third guide rail consisting of a pair of rails 17a1a and 17a1b, transport means 17a1a1 and 17a1b1, and rotational drive means 17a1c.
The pair of rails 17a1a and 17a1b are arranged at intervals corresponding to the first guide rail 12, and are configured to guide the plate-shaped member on opposing sides.
The conveyance means 17a1a1 and 17a1b1, like the first conveyance means 12 and the second conveyance means 14 shown in FIG. ), a pulley (symbol omitted) that spans the conveyor belt, and a drive mechanism (not shown) that includes a motor that rotates the pulley, and the plate member is sandwiched between the upper and lower conveyor belts. It is configured to be transported in an open state.
The rotational drive means 17a1c includes a drive mechanism including a pulley, a belt, and a motor, and is configured to rotate the pair of rails 17a1a, 17a1b and the conveyor belt by 180 degrees.
Further, the pair of rails 17a1a and 17a1b are provided so as to be movable in a direction perpendicular to the longitudinal direction of the first and second transport paths L1 and L2, and are configured to be able to adjust the interval between the rails.
The plate-shaped member reversing device traverse means 17a2 has a ball screw mechanism section 17a2a, a motor (not shown), and a rail 17a2b, and the rotation of the motor moves the plate-shaped member reversing device to the first and second transport paths L1, A third guide rail consisting of a pair of rails 17a1a and 17a1b can be set at the other end of the first guide rail 12 and the other end of the second guide rail 14 by reciprocating in a direction perpendicular to the longitudinal direction of L2. It is configured so that it can be done.
In addition, the third guide rail is arranged such that one rail 17a1a is fixed in position, and the other rail 17a1b is provided movably in a direction perpendicular to the longitudinal direction of the first and second transport paths L1 and L2. The distance between the rails 17a1a and 17a1b can be adjusted.

The process flow of double-sided inspection of a plate-shaped member using the plate-shaped member external double-sided inspection unit of the first embodiment configured as described above will be explained. Here, a printed circuit board is used as the plate-like member 60.
The operator stores the uninspected printed circuit board 60 in the magazine rack 56, and sets the stored magazine rack 56 at the loading port (lower left position in FIG. 2(b)) of the plate-shaped member loader device 11a.
The plate-shaped member loader device 11a sequentially loads the printed circuit boards 60 stored in the magazine rack 56 onto the first guide rail 12 provided on the transport path L1. The first plate-like member conveyance means 13 sequentially conveys the printed circuit boards 60 to the plate-like member inspection section 16, as shown in FIG. 2(a). In the plate-shaped member inspection section 16, the imaging device 16a images the first surface of the printed circuit board 60 that has been transported to a predetermined inspection position via the first plate-shaped member transport means 13, and displays the captured image on the monitor 52a. The appearance of the first surface is then inspected using a dedicated inspection algorithm.
Next, the plate-like member reversing unit 17 receives the printed circuit board 60 conveyed via the first conveying means 13 from the other end of the first guide rail 12, and reverses the front and back surfaces of the received printed circuit board 60. Then, it is set on the other end of the second guide rail 14 that can be transported via the second transport means 15, and after setting, it returns to the initial position.
The second transport means 15 transports the printed circuit board 60 to the plate-shaped member inspection section 16. In the plate-shaped member inspection section 16, the imaging device 16a moves to image the second surface of the printed circuit board 60 that has been transported to a predetermined inspection position via the second plate-shaped member transport means 15, and displays the captured image. The image is displayed on the monitor 52a, and the appearance of the second surface is inspected using a dedicated inspection algorithm.
In addition, in the plate-shaped member inspection section 16, while the imaging device 16a is taking an image of the printed circuit board 60 conveyed to the inspection position on one conveyance path, the printed circuit board 60 is conveyed to the inspection position on the other conveyance path. Ru. The imaging device 16a moves in a direction perpendicular to the longitudinal direction of the first and second transport paths L1 and L2 and transports the printed circuit board 60 to an inspection position on each of the first and second transport paths L1 and L2. images are taken alternately.
Next, the second transport means 15 transports the printed circuit board 60, both sides of which have been inspected, to the plate-like member unloader device 11b. The plate-like member unloader device 11b stores the printed circuit board 60 in the magazine rack 56.
Such double-sided inspection of the printed circuit board is performed continuously. In the plate-shaped member loader device 11a, the automatic transfer means 11c slides the empty magazine rack 56 that has been moved to the transfer position to the receiving position in the plate-shaped member unloader device 11b.
In addition, in the plate-shaped member unloader device 11b, the printed circuit boards 60, which have been inspected on both sides and which are filled in the magazine rack 56, are transferred to the unloading port (lower left position in FIG. 2(c)) as shown in FIG. 2(c). let
The operator takes out the printed circuit board 60, which has been inspected on both sides, and the magazine rack 56, which has been moved to the exit.

According to the double-sided plate-shaped member appearance inspection unit of the present embodiment, the first conveyance means 13 and the second conveyance means 15 are placed on two adjacent parallel conveyance paths L1 and L2, so that the plate-like parts such as printed circuit boards, etc. The conveying direction of the member 60 is reversed, and the plate-like member reversing means 17a receives the plate-like member 60 that has been inspected on one side and is conveyed via the first conveying means 13, and rotates the received plate-like member 60. The front surface and the back surface are reversed and set on the other end of the second guide rail 14 which can be transported via the second transport means 15, and one imaging device 16a is mounted on the first transport means 13. The plate-shaped member 60, which has not been inspected on both sides, is transported to the inspection position on the first transportation path L1 by the board member 60, and the plate member 60, which has been inspected on one side but not yet inspected, is transported to the inspection position on the second transportation path L2 by the second transportation means 15. Since the plate-like member 60 with its surface facing upward is arranged to be imaged by moving in a direction perpendicular to the longitudinal direction of the first and second transport paths L1 and L2, the plate-like member 60 in an uninspected state Both sides of the plate-shaped member 60 can be inspected by simply putting the plate-shaped member 60 into the conveyance path once.
Furthermore, while the plate-like member 60 on one conveyance path is being imaged by the imaging device, the plate-like member 60 on the other conveyance path can be conveyed to the inspection position. The upper plate-like member 60 can be imaged continuously, and the inspection work efficiency is greatly improved. Since both sides of the plate member 60 can be inspected with one plate member inspection unit 16, it is not necessary to provide a plurality of plate member inspection units 16.
Furthermore, since the plate-like member reversing unit 17 is provided as a separate mechanism from the plate-like member inspecting unit 16, the cost of the apparatus can be suppressed without complicating the internal structure of the plate-like member inspecting unit 16.
In addition, a plate-shaped member loading/unloading unit 11 is provided across the two conveyance paths L1 and L2, and is stored in the magazine rack 56 at the X coordinate position of the first conveyance path L1 of the two parallel conveyance paths. The plate-like member loader device 11a loads the plate-like member 60, which has not been inspected on both sides, into the first transport path L1, and the second transport path L2 is placed at the same X coordinate position as the first transport path L1 in the second transport path L2. Each of the plate-like member unloader devices 11b stores the double-sided inspected plate-like member 60 that is transported in the direction approaching the magazine rack 56. Since only the inspection section 16 and the plate-like member reversing section 17 are required, the length of the installation line can be shortened, and since the loading and unloading positions are at the same position on the X coordinate, the burden on the worker for loading and unloading is greatly reduced. This greatly improves work efficiency.

Moreover, according to the plate-like member appearance double-sided inspection unit of the present embodiment, the plate-like member reversing means 17a are arranged at intervals corresponding to the first guide rails 12, and the pair of plate-like member reversing means 17a guide the plate-like member 60 on opposing sides. A third guide rail consisting of rails 17a1a and 17a1b, and a transport section (conveyor belt (symbol: (omitted)), transport means 17a1a1, 17a1b1 having a drive mechanism (not shown) for driving the transport section, and the pair of rails 17a1a, 17a1b and the transport section 180 degrees around the center of the pair of rails 17a1a, 17a1b. A plate-like member reversing device 17a1 comprising a rotation driving means 17a1c for rotating the plate-like member reversing device 17a1, and reciprocating the plate-like member reversing device 17a1 in a direction perpendicular to the longitudinal direction of the first and second transport paths L1 and L2. Since the configuration includes plate-like member reversing device traverse means 17a2 for setting the third guide rail at the other end of the first guide rail 12 and the other end of the second guide rail 14, the first guide rail 12 The plate-like member 60 that is transported via the first transport means 13 is received from the other end, the front and back sides of the received plate-like member 60 are reversed, and the plate-like member 60 can be transported via the second transport means 15. It is possible to realize a configuration in which it is set at the other end of the second guide rail 14.

Further, according to the double-sided inspection unit for the appearance of a plate-shaped member of the present embodiment, the first guide rail 12 and the second guide rail 14 have the rails 12b and 14a on opposite sides fixed in position, and the positions on the opposite sides are fixed. The rails 12a and 14b on the opposite side are provided so as to be movable in a direction perpendicular to the longitudinal direction of the first and second transport paths L1 and L2, and the distance between each pair of rails can be adjusted, and the third guide The rails are a pair of rails 17a1a, 17a1b, with one rail 17a1a fixed in position and the other rail 17a1b movable in a direction perpendicular to the longitudinal direction of the first and second transport paths L1 and L2. Since the interval is adjustable, it is also possible to inspect both sides of plate-like members 60 of different sizes.

Moreover, according to the plate-shaped member appearance double-sided inspection unit of the present embodiment, (two parallel conveyances in the plate-shaped member loading/unloading section 11 provided across two adjacent parallel conveyance paths L1 and L2). The plate-shaped member loader device 11a (equipped in the first transport path L1 of the paths L1 and L2) includes a first magazine rack transport means 11a1, a supply lifter 11a2, and a second magazine rack transport means 11a3, The first magazine rack transport means 11a1 is provided at the lower stage and is configured to transport the magazine rack 56 in a direction approaching the supply lifter 11a2, and the supply lifter 11a2 transports the second magazine rack transport means 11a3 in the vertical direction. The second magazine rack transport means 11a3 is configured to be movable, and when located at the lower stage, receives the magazine rack 56 transported from the first magazine rack transport means 11a1, and when located at the upper stage, it receives the empty magazine rack 56. It is configured to be conveyed in a direction approaching the handover position (two parallel conveyance paths L1, L2 in the plate-like member loading/unloading section 11 provided across two adjacent parallel conveyance paths L1, L2). The plate-like member unloader device 11b (equipped in the second transport path L2) includes a third magazine rack transport means 11b1, a storage lifter 11b2, and a fourth magazine rack transport means 11b3. The conveyance means 11b1 is provided in the upper stage and is configured to convey an empty magazine rack in a direction approaching the storage lifter 11b2, and the storage lifter 11b2 can move the third magazine rack conveyance means 11b1 in the vertical direction. When the fourth magazine rack transport means 11b3 is located at the upper stage, the fourth magazine rack transport means 11b3 receives the empty magazine rack 56 transported from the third magazine rack transport means 11b1 at the receiving position, and when it is located at the lower stage, it receives the empty magazine rack 56. The plate-shaped member loading/ unloading unit 11 is configured to transport the empty magazine rack 56 in the direction approaching the take-out position , and the plate-shaped member loading/unloading unit 11 automatically transports the empty magazine rack 56 from the transfer position in the plate-shaped member loader device 11a to the receiving position in the plate-shaped member unloader device 11b. Since the structure is equipped with an automatic transfer means 11c that slides and transfers the magazine rack 56 in which uninspected plate members 60 are stored, the operator can transfer the magazine rack 56 containing the uninspected plate members 60 to the plate member loading/unloading section 11. The work of loading and unloading the plate-like member 60 can be completed by simply loading and unloading the plate-like member 60 from the same X-coordinate position adjacent to the set position at the same height as the magazine rack 56 in which the plate-like member 60 that has been inspected on both sides is stored. be able to. Therefore, the burden on the operator is significantly reduced. Moreover, the structure for transferring the magazine rack 56 from the plate-shaped member loader device 11a to the plate-shaped member unloader device 11b does not need to be large-scale, and the cost of the device can be suppressed.

Therefore, according to the present embodiment, it is possible to inspect both sides of a plate-shaped member in one operation of loading it onto the conveyance path, to suppress equipment costs, to shorten the length of the installation line, to greatly improve the workability of loading and unloading, and to significantly shorten the inspection time. A unit for inspecting both sides of the external appearance of a plate-like member that can be realized simultaneously is obtained.

Although the embodiments of the plate-shaped member external double-sided inspection unit of the present invention have been described above, the present invention is not limited to the above embodiments, and can be configured in any form within the scope of the claims. It is possible to do so.
For example, the plate-like member reversing means receives the plate-like member conveyed via the first conveying means from the other end of the first guide rail, and inverts the front and back surfaces of the received plate-like member. The configuration may be different from that of the plate-like member reversing means 17a in the first embodiment as long as it can be set at the other end of the second guide rail that can be transported via the second transport means.
Further, for example, if the automatic transfer means can automatically transfer an empty magazine rack from the plate-like member loader device to the plate-like member unloader device, the automatic transfer means may have a different configuration from the automatic transfer means 11c in the first embodiment. It's okay.
Further, for example, the plate-shaped member inspection unit may transport the plate-shaped member, whose both sides have not been inspected, which has been transported to the inspection position on the first conveyance path by the first conveyance means, and the plate-shaped member, which has not been inspected on both sides, and which is conveyed to the inspection position on the second conveyance path by the second conveyance means. one that is equipped with one imaging device that moves in a direction perpendicular to the longitudinal direction of the first and second transport paths to take an image of a plate-shaped member that has been inspected on one side and has the uninspected side facing upward; If so, the configuration may be different from that of the plate-like member inspection unit 16 in the first embodiment.
In addition, if the first conveyance means and the second conveyance means are capable of conveying in a direction away from the plate-like member loader device or in a direction approaching the plate-like member unloader device, The first conveying means 13 and the second conveying means 15 may have different configurations.

The double-sided inspection unit for the appearance of a plate-like member of the present invention is capable of inspecting the appearance of soldering conditions on both sides (front and back sides) of a printed circuit board on which SMT components and discrete components are mounted by soldering. It is useful in fields where it is necessary to inspect the appearance of both sides (front and back).

11 Plate member loading/unloading section 11a Plate member loader device 11a1 First magazine rack transport means 11a2 Supply lifter 11a3 Second magazine rack transport means 11b Plate member unloader device 11b1 Third magazine rack transport means 11b2 Storage lifter 11b3 Fourth Magazine rack transport means 11b4 Fifth magazine rack transport means 11c Automatic delivery means 11c1 Delivery roller 12 First guide rails 12a, 12b Pair of rails 13 First transport means 13a1, 13a2 Transport belt 13b Wheels 14 Second guide rails 14a, 14b Pair of rails 15 Second conveyance means 15a1, 15a2 Conveyor belt 15b Wheels 16 Plate member inspection section 16a Imaging device 16b Imaging device holding member 16c Imaging device moving means 16c1 Ball screw mechanism section 16c2 Motor 16d Support column 17 Plate member reversing section 17a Plate member reversing means 17a1 Plate member reversing devices 17a1a, 17a1b Pair of rails 17a1a1, 17a1b1 Conveying means 17a1c Rotation drive means 17a2 Plate member reversing device traverse means 17a2a Ball screw mechanism 17a2b Rail L1 (first) conveyance path L2 2 conveyance path 51 Plate member loader devices 52, 52', 54 Plate member appearance inspection devices 52a, 52'a Monitor 55 Plate member unloader device 56 Magazine rack 60 Plate member (printed circuit board)
71 First transport lane 71a, 71b Rail 72 Second transport lane 72a, 72b Rail 73 Inspection head 73a Camera K1, K2 Printed circuit board 81 Board loading port 82 ₁ , 82 ₂ pallets 83 Loading transport line 84 First transport line 85 2 transport lines 86, 87 Inspection unit 88 Transport transport line 91 First stage 92 Second stage 93, 94 Drive means 95 Inspection means S1 Board exchange area S2 Inspection area

Claims (3)

The plate-shaped member, which is not inspected on both sides and is stored in a magazine rack, is placed in the X-coordinate position of the first conveyance path, which is provided astride two adjacent parallel conveyance paths. A plate-shaped member loader device that loads the plate-shaped member into the conveyance path, loads the plate-shaped member that has been inspected on both sides and is conveyed toward the same X-coordinate position of the second conveyance path as the first conveyance path through the second conveyance path into a magazine. a plate-like member loading/unloading section each equipped with a plate-like member unloader device to be stored in a rack;
a first guide rail consisting of a pair of rails provided along a first conveyance path so that one end is close to the input end of the plate-shaped member loader device;
a first conveying means for conveying the plate member set on the first guide rail in a direction away from the plate member loader device;
a second guide rail consisting of a pair of rails provided along a second conveyance path so that one end is close to the receiving end of the plate-shaped member unloader device;
a second conveying means for conveying the plate-like member set on the second guide rail in a direction approaching the plate-like member unloader device;
Receive a plate-like member transported via the first transport means from the other end of the first guide rail, reverse the front and back sides of the received plate-like member, and transport the plate-like member through the second transport means. a plate-like member reversing section that includes a plate-like member reversing means that is set at the other end of the second guide rail that can be transported;
A plate-shaped member whose both sides have not been inspected, which is provided between the plate-shaped member loading/unloading section and the plate-shaped member reversing section, and which is conveyed by the first conveying means to an inspection position on the first conveying path; A plate-shaped member with one side inspected and the uninspected side facing upward, which is conveyed to the inspection position on the second conveyance path by the second conveyance means, is perpendicular to the longitudinal direction of the first and second conveyance paths. a plate-shaped member inspection section equipped with one imaging device that moves in a direction to take an image;
Equipped with
The plate-like member loader device includes a first magazine rack conveying means, a supply lifter, and a second magazine rack conveying means,
The first magazine rack conveying means is provided at a lower stage and is configured to convey the magazine rack in a direction approaching the supply lifter,
The supply lifter is configured to be able to move the second magazine rack conveying means in the vertical direction,
When the second magazine rack transport means is located at the lower stage, the second magazine rack transport means receives the magazine rack transported from the first magazine rack transport means, and when it is located at the upper stage, it transports the empty magazine rack in a direction approaching the transfer position. It is configured as follows,
The plate-like member unloader device includes a third magazine rack conveying means, a storage lifter, and a fourth magazine rack conveying means,
The third magazine rack conveying means is provided at the upper stage and is configured to convey an empty magazine rack in a direction approaching the storage lifter,
The storage lifter is configured to be able to move the third magazine rack conveying means in the vertical direction,
When the fourth magazine rack transport means is located at the upper stage, the fourth magazine rack transport means receives the empty magazine rack transported from the third magazine rack transport means at a receiving position, and when located at the lower stage, the fourth magazine rack transport means receives the empty magazine rack in a direction approaching the take-out position. configured to be transported to
The plate-shaped member loading/unloading unit is an automatic transfer means that automatically slides and transfers an empty magazine rack from the transfer position in the plate-shaped member loader device to the receiving position in the plate-shaped member unloader device. A double-sided inspection unit for the appearance of a plate-shaped member, characterized by comprising: The plate-shaped member reversing means
a third guide rail consisting of a pair of rails arranged at intervals corresponding to the first guide rail and guiding a plate member on opposing sides; and a third guide rail provided at two locations above and below each of the pair of rails; a conveyance means having a conveyance unit that conveys the shaped member with the shaped member sandwiched therebetween and a drive mechanism that drives the conveyance unit; and a conveyance unit that rotates the pair of rails and the conveyance unit 180 degrees around the center of the pair of rails as an axis. a plate-like member reversing device comprising:
The plate-shaped member reversing device is reciprocated in a direction perpendicular to the longitudinal direction of the first and second conveyance paths to move the third guide rail to the other end of the first guide rail and the second guide rail. a plate-like member reversing device traverse means set at the other end;
The plate-like member appearance double-sided inspection unit according to claim 1, comprising: In the first guide rail and the second guide rail, rails on opposite sides are fixed in position, and rails on the opposite side to the opposite sides are fixed in position with respect to the longitudinal direction of the first and second transport paths. It is provided so as to be movable in the vertical direction, and the distance between each pair of rails can be adjusted.
The third guide rail is provided such that one rail is fixed in position and the other rail is movable in a direction perpendicular to the longitudinal direction of the first and second transport paths, and the distance between the pair of rails is 3. The plate-like member appearance double-sided inspection unit according to claim 2, wherein the unit is adjustable.

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