JP2001130728A - Device and method for transporting printed circuit board and printed circuit board inspection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To smoothly carry in and out printed circuit boards even if the state of disposition of the transfer reference surfaces of a previous and a latter stage devices or the width of the printed circuit boards is changed, inspect the state of the printed circuit boards with a simple mechanism, and facilitate maintenance and inspection. SOLUTION: A fixed rail 3a and a movable rail 3b are provided on a Y-axis table 7, and moved by a Y-axis movement means 8 in the direction crossed perpendicular to an X-axis in the transport direction. The movable rail 3b can be moved on a Y-axis table 7 by a W-axis movement means 10, and a distance between the movable rail and the fixed rail 3a is variable. At the time of carrying in, after the movable rail 3b is moved so as to set the distance to a distance corresponding to the width of a printed circuit board P, the Y-axis table 7 is moved by the Y-axis movement means 8 based on the amount of displacement thereof relative to the fixed rail of a previous stage device so as to arrange the rails 3a and 3b. At the time of carrying out, the Y-axis table 7 is moved by the Y-axis movement means 8 based on the amount of displacement of thereof relative to the fixed rails of the previous and latter stage devices so as to arrange the rails 3a and 3b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printed circuit board transport device for carrying out and out a printed circuit board for inspecting the printed circuit board. The present invention relates to a printed circuit board loading / unloading apparatus and method which can be easily performed, and a printed circuit board inspection apparatus for inspecting a printed circuit board.

[0002]

2. Description of the Related Art At the time of manufacturing a printed circuit board, a soldering state of the printed circuit board and a mounting state of components are inspected by an inspection apparatus. The board production line is composed of, for example, a solder printing machine, an inspection device, and a component mounting machine.
The printed circuit board on which the solder is printed by the preceding solder printing machine is carried into the inspection apparatus on the line, and the state of the solder printed on the printed circuit board is inspected and carried out to the subsequent component mounting machine. In the component mounting machine, electronic components are mounted on a printed circuit board.

The loading and unloading of the printed circuit board is performed by providing a pair of rails and a belt at both ends (two sides in a direction perpendicular to the loading and unloading direction) of the printed circuit board, and transporting the belt. In other words, the board is conveyed in a state where only the both ends of the board are supported, the board surface is lifted, and the solder is not touched. One of the rails and the belt is configured as a fixed-side transfer reference surface, and the other rail and the belt side is configured as a movable side movable in the width direction of the substrate. It is designed to be moved. The above-mentioned transfer device is disclosed in, for example,
6745.

[0004]

The handling of the transport reference surface is not unified between the devices arranged before and after the inspection device and the inspection device. For example, the fixed side of the inspection device may be located on the movable side of the preceding solder printing machine, and the movable side of the inspection device may be located on the fixed side of the preceding solder printing machine. Further, the fixed side of the inspection device may be located on the movable side of the subsequent component mounting machine, and the movable side of the inspection device may be located on the fixed side of the subsequent component mounting machine.

By the way, in this inspection apparatus, a spot printed by a solder printing machine at the preceding stage is detected by an optical sensor or the like arranged on the upper part of the transporting apparatus, and the state of the solder printing (whether there is a defect, the height of the solder, etc.) is detected. ) To be inspected. This optical sensor scans the printed circuit board to detect each solder.

At this time, since the printed board is fixed at a predetermined position on the inspection apparatus, the optical sensor is moved on the printed board in the vertical and horizontal directions (X and Y axes). This moving mechanism has to be provided at the upper part of the transporting device, which increases the size and the cost of the mechanism, and sometimes makes it difficult to perform maintenance and inspection of the lower transporting device because it covers the printed circuit board.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the loading and unloading of a printed circuit board can be smoothly performed even if the arrangement state of the transfer reference planes of the upstream and downstream devices and the width of the printed circuit board are changed. It is an object of the present invention to provide an apparatus and a method for transporting a printed circuit board which can be carried out easily. It is another object of the present invention to provide a printed circuit board inspection apparatus that can inspect the state of a printed circuit board with a simple mechanism and that can easily perform maintenance and inspection.

[0008]

In order to achieve the above object, a printed board transfer device of the present invention comprises a pair of transfer rails provided on both sides of the printed board for transferring the printed board, respectively. Moving means for moving the pair of transport rails in a direction orthogonal to the transport direction,
The movement control of the moving means is performed based on the data of the width of the printed circuit board and the data of the amount of shift in the direction perpendicular to the carrying direction between each of the rails of the preceding apparatus on the loading side and the succeeding apparatus on the unloading side and the carrying rail. The distance between the pair of transport rails is controlled to move to a distance corresponding to the printed circuit board, and when the printed circuit board is loaded, the position of the preceding device and the transfer rail are matched, and when the printed circuit board is unloaded. Control means for controlling the movement of the subsequent device so as to match the position of the transport rail.

The apparatus further includes origin position detecting means for detecting an origin position of the transport rail, wherein the control means comprises a front-end device on the loading side and an unloading side with respect to the origin position and the position of the transport reference plane of the transport rail. Based on the data of the displacement amount of each transport reference plane of the rail of the subsequent device, the amount of movement of the moving means at the time of loading and unloading is calculated, and the calculated movement at the time of loading and unloading the transport rail, respectively. It is also possible to adopt a configuration in which it is moved by an amount.

The moving means includes a table on which the pair of transport rails are mounted and which is movable in a direction orthogonal to the transport direction, and which moves the one transport rail on the table in the direction of movement of the table. A second moving means for controlling the movement of the second moving means so that an interval between the pair of transport rails is a distance corresponding to a width of the printed circuit board. ,
And the unloading control may be executed.

In addition, an inspection device for inspecting the printed circuit board may be provided with an inspection means for inspecting the printed circuit board at a position halfway in the conveying direction of the pair of conveying rails.

According to the method of transferring a printed circuit board of the present invention, the distance between a pair of transfer rails provided on both sides of the printed circuit board is changed so as to correspond to the width of the printed circuit board to be transferred. In some cases, the pair of transport rails are moved in a direction orthogonal to the transport direction while maintaining a distance between the pair of transport rails so that the pair of transport rails are located at the carry-in position of the printed circuit board. The pair of transport rails may be moved in a direction perpendicular to the transport direction while maintaining a distance between the pair of transport rails so as to be positioned.

An origin position of the pair of transport rails is set in a direction orthogonal to the transport direction, and at the time of loading movement control, the pair of transport rails are moved to a transport reference plane of the import position with reference to the origin position. Calculating the amount of movement at the time of loading based on the data of the first distance, moving the pair of rails to the loading position, and controlling the carrying of the unloading position based on the origin position during the movement control of the unloading. The movement amount at the time of carrying out is calculated based on the data of the second distance to the surface, and the pair of rails may be moved to the carrying-out position.

Further, according to the printed board transfer method of the present invention, one is a first fixed transfer rail, the other is a parallel loading path including a first movable transfer rail, one is a second fixed transfer rail, and the other is a second fixed transfer rail. A table disposed between the second movable transfer rail and the parallel carry-out path, the table being movable in a direction perpendicular to the transfer direction of the printed circuit board; the table includes a fixed rail and a fixed rail; A transport method applied to a transport apparatus for a printed circuit board provided with a movable rail movable in the orthogonal direction, wherein the movable rail is moved in the orthogonal direction on the table, and the fixed rail and the movable rail are moved. Setting the width of the rail to be equal to the width of the printed circuit board; and measuring a first distance in the orthogonal direction between the first fixed transport rail and the fixed rail. Measuring a second distance between the second fixed transport rail and the fixed rail, and the width of the printed circuit board and the first distance for loading the printed circuit board on the parallel carry-in path. Moving the table in the orthogonal direction based on the values of the above, thereby aligning the first fixed transport rail and the movable rail and aligning the first movable transport rail and the fixed rail. Moving the table in an orthogonal direction based on the value of the width of the printed circuit board and the second distance in order to carry out the printed circuit board to the parallel carry-out path, whereby the second fixed conveyance is performed. Aligning the rail and the movable rail and aligning the second movable transport rail and the fixed rail. Transport method of a substrate.

According to the printed board inspection apparatus of the present invention, a pair of transport rails respectively provided on both sides of the printed board for transporting the printed board, and the pair of transport rails are arranged in a direction orthogonal to the transport direction. Moving means for moving the pair of conveying rails, an inspecting means for inspecting the printed circuit board, and a moving scanning means for moving and scanning the inspecting means along the conveying direction; When inspecting the printed circuit board, the moving means moves the printed circuit board in a direction perpendicular to the carrying direction, and the moving scanning means moves the inspecting means along the carrying direction to inspect the entire board surface. And control means for executing the program.

Further, the control means includes data of the width of the printed circuit board and a shift amount in a direction orthogonal to the transport direction between each of the rails of the upstream device on the loading side and the downstream device on the unloading side and the transport rail. Based on each data, the moving means is controlled to move, and the distance between the pair of transfer rails is controlled to be a distance corresponding to the printed circuit board. It is also possible to adopt a configuration in which the movement is controlled so that the positions coincide with each other, and when the printed circuit board is carried out, the position of the subsequent device and the position of the transport rail coincide.

Further, the inspection means is arranged opposite to the printed circuit board, and a light source for irradiating the printed circuit board with a laser beam, and a light receiving element for detecting a displacement of a projection on the printed circuit board based on a detection position of reflected light. A non-contact type displacement measuring device comprising: the moving scanning means sub-scans the displacement measuring device in the transport direction corresponding to a range of an irradiation point of a laser beam irradiated on the printed circuit board. Alternatively, the printed circuit board may be moved in the main scanning direction by moving the pair of transport rails in a direction orthogonal to the transport direction by the moving unit.

According to the above configuration, when the printed circuit board P is carried in from the preceding apparatus 30, the control means 21 controls the width D of the printed circuit board P into which the pair of transport rails 3a and 3b are carried.
After controlling the movement so that the distance matches the distance,
The transport rails 3a and 3b are moved to the 0 carry-in position. The loaded printed circuit board P is inspected by the inspection means 12 and then is unloaded to the subsequent device 40. At the time of unloading, the control means 21 moves the transport rails 3a and 3b to the unloading position of the subsequent device 40.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [First Embodiment] A first embodiment of a printed board transfer device according to the present invention will be described. FIG.
FIG. 2 is a side view of the printed board transfer device, and FIG. 2 is a plan view of the same. A transport unit 2 is provided inside the housing of the transport device 1 and transports the printed circuit board P in the X-axis direction in the figure. An unloading section of the upstream device is provided on the front side in the transport direction, and a loading section of the downstream device is provided on the rear end side in the transport direction.

The conveying means 2 comprises a pair of rails 3a and 3b and a belt 4 arranged with a predetermined width in the Y-axis direction in FIG.
a, 4b. The Y axis is a direction orthogonal to the X axis (transport direction). One is a fixed rail 3a, and the belt 4a is formed in an endless shape that moves on the fixed rail 3a. The other is a movable rail 3b that is parallel to the fixed rail 3a, and similarly has an endless belt 4b. Belt 4
Both ends a and 4b are supported by a rotating shaft 5, and the printed circuit board P is conveyed and moved in the X-axis direction by the rotation of a motor 6.

The fixed rail 3a and the movable rail 3b
Is provided on the Y-axis table 7. The Y-axis table 7 is movable in the Y-axis direction by a plurality of support shafts (not shown) extending in the Y-axis direction and Y-axis moving means 8 including a ball screw 8a and a motor 8b. On this Y-axis table 7, a support shaft (not shown), a ball screw 10a and a motor 1
A W-axis moving means 10 made of Ob or the like is provided, and supports the movable rail 3b so as to be movable in the W-axis direction. W axis is Y
It is in the same direction as the axis. As a result, the movable rail 3b moves in the Y-axis direction with respect to the fixed rail 3a, and the distance between the movable rails 3b is variable.

At a position above the Y-axis table 7, an inspection means 12 for inspecting the printed circuit board P is provided. The inspection means 12 uses a CCD camera or a laser displacement meter, and inspects the state of the front surface side of the printed circuit board P (for example, if the preceding device is a solder printing machine, a defect or height of solder).

The printed circuit board P is provided with a motor 6
Moves on the belts 4a and 4b in the X-axis direction by rotation. A fixing stopper 13 protrudes at a substantially central inspection position, and the printed circuit board P stops at this inspection position. After the position detection sensor 14 detects that the printed board P has reached the inspection position, the motor 6 stops. In this state, the inspection by the inspection unit 12 is performed, and after the inspection, the stopper 13 is retracted, and the printed board P is carried out to the subsequent device in the X-axis direction by driving the motor 6.

Although not shown, the fixed rails 3a,
The movable rail 3b is provided with a side plate for guiding the printed board P at a side position. Further, a pulse motor is used for the motors 8b and 10b. Further, the origin positions of the Y-axis table 7 (fixed rail 3a) and the movable rail 3b are origin position sensors 15, 1
6 is detected.

FIG. 3 is a block diagram showing the electrical configuration of the transport device 1. As shown in FIG. The input means 20 includes a keyboard, an external I
/ F, etc., and outputs the width of the printed circuit board P input thereto to the control means 21. Also, the amount of deviation between the measurement reference plane (fixed rail side) of the preceding apparatus and the measurement reference plane (fixed rail 3a) of the transfer apparatus 1, the measurement reference plane of the subsequent apparatus and the measurement reference plane of this transfer apparatus 1 (fixed rail) Rail 3
The shift amount of a) is input.

The control means 21 includes a CPU, ROM, R
The detection signals of the position detection sensor 14 and the origin position sensors 15 and 16 are input. The control means 21 includes a movement amount calculating means 21a, a transport control means 21b.
Is provided.

The moving amount calculating means 21a calculates the input width of the printed circuit board and the moving amounts of the Y axis and the W axis.
Then, the motors 8b and 10b are driven to control the movement of the rails 3a and 3b in the Y-axis so as to correspond to the amount of deviation from the preceding apparatus 30 and conform to the width of the printed circuit board P to be conveyed. When the motors 8b and 10b are driven, the origin position sensor 15
Motors 8b, 10b based on the origin position detected by
By supplying a predetermined number of pulses, the moving distance is obtained based on the added value of the supplied number of pulses. The movement amount calculation means 21a adds or subtracts the number of pulses using a counter or the like.

The transport control means 21b controls the drive of the motor 6 to control the transport of the printed circuit board P in the X-axis direction so that the printed board P can be inspected. After the inspection of the printed circuit board P by the inspection means 12, the printed circuit board P is controlled to be unloaded to the subsequent device 40.

FIG. 4 is a plan view for explaining an arrangement state of the transfer device 1. In the illustrated arrangement example, the transport reference surface (fixed rail 31) of the upstream device 30 and the downstream device 4 are referenced with respect to the transport reference surface (fixed rail 3a) of the inspection device 1.
The arrangement of the zero transport reference plane (fixed rail 41) is reversed. In addition, the transport reference surfaces of the upstream device 30 and the downstream device 40 are shifted from the transport reference surface of the inspection device 1 by distances L1 and L2 in the width direction, respectively.

The width of the printed circuit board P is D, and in the pre-stage apparatus 30, the distance between the fixed rail 31 and the movable rail 32 is set in advance so as to have a distance suitable for the width D of the printed circuit board P. Also in the subsequent device 40, the distance between the fixed rail 41 and the movable rail 42 is set in advance so as to match the width D of the printed circuit board P.

Next, the control operation by the control means 21 will be described with reference to FIG.
This will be described with reference to the flowchart of FIG. First, the control of the Y axis and the W axis is initialized (S1). Specifically, the Y-axis table 7 (fixed rail 3a) and the movable rail 3b are moved to positions where the origin positions are detected by the origin position sensors 15 and 16, respectively.

Next, distances L1, L2,
D0 is input (S2). Distance L1 is fixed rail 3a
And the distance between the fixed rail 31 of the preceding apparatus. Distance L2
Is the distance between the fixed rail 3a and the fixed rail 41 of the subsequent device. The distance D0 is between the fixed rail 3a and the movable rail 3.
This is the distance between b.

When a measurement start command is input in this state, the apparatus starts loading control of the printed circuit board P (S3).
-YES). Next, the width D of the printed circuit board P is input to the input means 20 (S4). The movement amount calculation means 21a controls the movement of the W axis corresponding to the width D (S5). Specifically, the motor 10b is driven to move the movable rail 3b, and the distance between the movable rail 3b and the fixed rail 3a is set to D.

Next, the movement of the Y axis is controlled (S6). That is, the motor 8b is driven to move the Y-axis table 7 to the coordinates of L1 + D. At this time, the fixed rail 3a and the movable rail 3b provided on the Y-axis table 7 move while maintaining the width D. Thereby, as shown in the operation diagram of FIG. 6A, the fixed rail 3a is
2, and the movable rail 3b is located at a position corresponding to the fixed rail 31 of the preceding apparatus.

Next, the transport control means 21b carries the printed circuit board P into the apparatus (S7). The motor 6 is driven to convey the belts 4a and 4b to move the printed circuit board P in the X-axis direction. When the printed circuit board P comes into contact with the stopper 13 and the position is detected by the position detecting sensor 14, the motor 6
To stop. Thus, the inspection by the inspection means 12 can be executed (S8).

When the inspection by the inspection means 12 is completed, the control of unloading the printed circuit board P is started. First, the movement of the Y axis is controlled (S9). The movement amount calculation means 21a drives the motor 8b to move the Y-axis table 7 to the coordinates of L2 + D.
As a result, as shown in the operation diagram of FIG. 6B, the fixed rail 3a is located at a position corresponding to the movable rail 42 of the subsequent device, and the movable rail 3b is fixed to the fixed rail 4 of the subsequent device.
The position coincides with 1.

Next, the transport control means 21b includes the stopper 1
3 is retracted, and the motor 56 is driven to carry out the printed circuit board P to the subsequent device (S10). Then, it is determined whether or not the measurement is completed (S11), and if the measurement is completed (S1).
1-YES), and ends the control processing.

On the other hand, when the measurement is continued, the type of the printed circuit board P to be inspected next is determined (S12). Control device 21
Detects whether there is a change in the width D of the printed circuit board P among these types. When the width D is changed (S12-YE
S), the process proceeds to S4, and carries out the processes from S4 onward and controls the carry-in and carry-out based on the input width D. If there is no change in the width D (S12-NO), the process proceeds to S6 to execute the processing of S6 and thereafter to control the loading and unloading.

[Second Embodiment] FIG. 7 is an arrangement diagram for explaining a second embodiment of the present invention. In this example, the transport reference surface (fixed rail 3a) of the transport device 1 and the transport reference surface (fixed rail 31) of the preceding device 30 are displaced by the distance L1 and have the same direction. Further, the transfer reference surface (fixed rail 3a) of the transfer device 1 and the transfer reference surface (fixed rail 41) of the subsequent device 40 are arranged with a shift amount L2 in the opposite direction.

In such an arrangement, loading and unloading can be performed basically in the same procedure as the flowchart shown in FIG. At the time of loading, after the motor 10b is driven in S5 and the distance between the fixed rail 3a and the movable rail 3b is set to D, in the movement control of the Y axis in S6, the motor 8b is driven to move the Y axis table 7 to the coordinates of L1. . As a result, the fixed rail 3a of the transport device 1 is attached to the fixed rail 31 of the preceding device 30.
And the movable rail 32 of the upstream device 30
And the movable rail 3b of the transfer device 1 can be positioned so as to coincide.

At the time of unloading after the inspection of the printed circuit board P, S9
In the movement control of the Y-axis in, the motor 8b is driven to move the Y-axis table 7 to the coordinates of L2 + D2. Thus, the movable rail 42 of the downstream device 40 is positioned so as to coincide with the fixed rail 3a of the transport device 1, and the fixed rail 41 of the downstream device 40 is aligned with the movable rail 3b of the transport device 1.

As described above, even when the transport reference planes of the preceding and subsequent devices are different, the printed circuit board P can be smoothly loaded and unloaded while recognizing the arrangement state.

[Third Embodiment] Next, an embodiment of a printed circuit board inspection apparatus according to the present invention will be described. FIG. 8 is a side view showing the printed board inspection apparatus, and FIG. 9 is a plan view of the same. This inspection device 48 includes the transport device 1 of the above-described embodiment. The inspection means 12 provided above the inspection position of the transport device 1 includes a displacement measuring device 50 and a scanning moving means 57.

FIG. 10 is a schematic diagram showing the principle of non-contact measurement of the displacement measuring device 50. The laser beam from the light source 51 is irradiated on the substrate surface of the printed circuit board P, and an image formed by the reflected light of the irradiation point S is formed on the light receiving surface 54a of the light receiving element 54 by the imaging lens 53.

As a result, the printed circuit board P is moved in the height direction Z.
(If there is a protrusion such as solder), the irradiation point S moves to S ′ or S ″, and the position of the imaging point K on the light receiving surface 54a of the light receiving element 54 correspondingly moves to K ′ or K ″. Moving. The light receiving element 54 outputs a detection signal corresponding to the position of the image forming point K, and outputs a displacement amount (height and outer shape) of the projection (solder) on the printed circuit board P based on a change amount of the signal.

The scanning and moving means 57 includes an X-axis moving means 58
, And a Z-axis moving unit 59, and the Z-axis moving unit 59 is provided with a displacement measuring device 50. X axis moving means 58
Is composed of a horizontal support shaft (not shown) along the X-axis direction, a ball screw 58a, and a motor 58b above the inspection position of the printed circuit board P. The length in the X-axis direction is about the length of the printed circuit board P.

The Z-axis moving means 59 includes a moving body 59a movable in the X-axis direction by the motor of the X-axis moving means 58,
It comprises a support shaft (not shown) provided in the vertical direction (Z-axis direction) of the moving body 59a, a ball screw 59b, and a motor 59c. A displacement measuring device 50 is suspended from the lower end of the ball screw 59b. Thus, the displacement measuring device 50 can scan and move in the transport direction (X-axis direction) of the printed circuit board P. Here, the Z-axis moving means 59 is provided for performing scanning measurement for measuring the amount of displacement while maintaining a predetermined distance from the printed circuit board P.

The displacement measuring device 50 scans the displacement amount (solder protrusion) on the printed circuit board P in the X and Y axis directions. The scanning in the X-axis direction is performed by the displacement measuring device 5 by the scanning moving means 57.
0 is performed by controlling the movement. The scanning in the Y-axis direction is performed by controlling the movement of the Y-axis table 7 of the transport device 1.

Specifically, as shown in the plan view of FIG.
The irradiation point S of the laser beam by the displacement measuring device 50 is started from the four corners (position T1) of the printed circuit board P, and at the same time, the motor 8b is driven to move the Y-axis table 7 to the distance corresponding to the width D of the printed circuit board P. Only in the Y1 direction (the Y-axis direction is defined as the main scanning direction), and the displacement of the solder protrusion is continuously detected. When the Y-axis table 7 moves, the distance between the fixed rail 3a and the movable rail 3b does not change, so that the printed circuit board P moves in the Y1 direction. The irradiation point S of the laser beam is at the other end of the printed circuit board P (position T2).
When the motor 8b has been moved, the driving of the motor 8b is stopped.

After that, the motor 58b of the X-axis moving means 58 of the scanning moving means 57 is driven to move the displacement measuring device 50 in the X-axis direction to a predetermined amount (position T3) (sub-scan). The amount of movement in the X-axis direction is set to a distance corresponding to the measurement range of the displacement measuring device 50 in the X-axis direction. For example, when the displacement measuring device 50 has a deflecting unit for deflecting the laser beam and scans the laser beam in the X-axis direction at a predetermined width (width of xA in the figure), this scanning is performed. The displacement measuring device 50 is moved in the X-axis direction by a predetermined amount corresponding to the width xA.

After the sub-scanning, the motor 8b is driven to move the Y-axis table 7 in the Y2 direction to continuously detect the displacement of the solder projection. Thereafter, the motor 58b of the X-axis moving means 58 of the scanning moving means 57 is driven to move (sub-scan) the displacement measuring device 50 in the X-axis direction by a predetermined amount (to the position T4). The displacement amount of the solder protrusion on the printed circuit board P is continuously detected by repeating the above-described movement scanning in the X and Y axes.

As described above, by utilizing the configuration in which the transport device 1 is movable in the Y-axis direction, the displacement measuring device 50 is set to the X position during the inspection processing of the printed circuit board P (processing S8 in FIG. 5).
A configuration in which the movement is controlled only in the axial direction can be adopted. Accordingly, since the scanning moving unit 57 for moving the displacement measuring device 50 inside the housing of the inspection device 48 does not require a moving mechanism in the Y-axis direction, the configuration can be reduced in size and simplified. Further, the scanning moving means 57 is provided on the upper portion of the transporting device 1, but since this configuration is arranged only along the X-axis direction, the upper portion of the printed circuit board P can be exposed, and Maintenance and inspection of components can be easily performed.

In each of the above-described embodiments, the amount of shift between the fixed rail of the preceding stage and the fixed rail of the succeeding device is input as data with reference to the fixed rail serving as the transport reference plane.
However, the present invention is not limited to this, and it is also possible to adopt a configuration in which the alignment state between the fixed rail of the transport device 1 and each of the upstream device and the downstream device is detected and confirmed by a sensor.

[0054]

According to the printed board conveying apparatus of the present invention, even if the width of the printed board is changed and the loading / unloading position with respect to the pre-stage apparatus and the post-stage apparatus is shifted in the direction perpendicular to the conveying direction, a pair of conveying rails is used. Can be moved and carried in and out. According to the second aspect, the movement of the transfer rail is based on the data of the amount of deviation between the position of the transfer reference surface of the transfer rail and the positions of the transfer reference surfaces of the preceding device and the unloading side with respect to the origin position. The moving amount can be calculated and moved at the time of loading and unloading, and accurate positioning based on the transport reference plane can be performed. Further, even when the fixed rail, which is the transport reference plane of the upstream or downstream device, is arranged upside down, it is possible to carry in / out correspondingly. According to the third aspect, a pair of transport rails is provided on the table, and one of the transport rails is configured to be movable by the second moving means. , And unloading movement. According to the fourth aspect, it is possible to inspect and carry out the loaded printed circuit board by the inspection means provided at an intermediate position in the transport direction of the transport rail.

According to the printed circuit board transfer method of the present invention, the distance between the pair of transfer rails is made variable according to the width of the printed circuit board, and then the transfer rail is moved to the carry-in position and transferred to the carry-out position. Since the configuration is such that the rail is moved to the position, the printed circuit board can be carried in and out with simple movement control. According to claim 6,
At the time of loading, the transport rail is moved to the loading position based on data of the first distance from the origin position to the transport reference plane at the loading position, and at the time of unloading, the transport rail is moved at the second distance from the origin position to the transport reference plane at the loading position. The transfer rail at the carry-in position can be moved to the carry-out position based on the data, so that quick carry-in and carry-out can be performed. According to claim 7,
With the fixed rail and the movable rail set on the table so as to be equal to the width of the printed circuit board, the table is moved based on the distance measured between the preceding apparatus and the succeeding apparatus with respect to the fixed rail, respectively. Thus, the table can be aligned and carried on the rail of the preceding apparatus, and the table can be moved to be aligned and carried on the rail of the succeeding apparatus.

According to the printed board inspection apparatus of the present invention, the inspection means moves and scans along the transport direction, and the transport means moves the printed board on the transport rail side in a direction orthogonal to the transport direction, thereby performing the inspection. Inspection of the entire substrate surface by means can be performed. Further, the moving mechanism of the inspection device can be simplified, the transfer surface can be exposed, and maintenance and inspection can be facilitated. According to the ninth aspect, in addition to the above-described effects, the transport rail is moved so as to have a distance corresponding to the printed circuit board based on the input data of the width and the amount of displacement of the printed circuit board. The carry-in from the device and the carry-out to the subsequent device are positioned so that the carry-in and carry-out can be performed smoothly. In addition, by using a displacement measuring machine for inspection of the printed circuit board, the displacement on the printed circuit board can be accurately detected. In this case, the moving scanning means makes the displacement measuring device sub-scan in the conveying direction corresponding to the range of the irradiation point of the laser beam, and moves the conveying rail in a direction perpendicular to the conveying direction by the moving means to perform main scanning on the printed circuit board side. By doing so, it becomes possible to inspect the entire surface of the substrate.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of a printed board transfer device of the present invention.

FIG. 2 is a plan view of the transfer device.

FIG. 3 is a block diagram showing an electrical configuration of the transport device.

FIG. 4 is a plan view showing an arrangement state of a transport rail.

FIG. 5 is a flowchart illustrating a transport operation.

FIG. 6 is a plan view showing loading and unloading operations.

FIG. 7 is a plan view showing a state in which the arrangement of transport rails is different.

FIG. 8 is a side view showing an embodiment of the printed circuit board inspection apparatus of the present invention.

FIG. 9 is a plan view of the inspection device.

FIG. 10 is a schematic diagram showing a measurement principle of the displacement measuring device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Conveying apparatus, 2 ... Conveying means, 3a ... Fixed rail, 3b
... movable rails, 4a, 4b ... belts, 6, 8b, 10b
... Motor, 7 ... Y-axis table, 8 ... Y-axis moving means, 10
... W-axis moving means, 12 ... inspection means, 13 ... stopper, 1
4: Position detection sensor, 15, 16: Origin position sensor, 2
0 ... input means, 21 ... control means, 21a ... movement amount calculation means, 21b ... transport control means, P ... printed circuit board, 30 ...
Pre-stage device, 40 ... post-stage device.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yasuhisa Nakamichi 5-10-27 Minamiazabu, Minato-ku, Tokyo Inside Anritsu Corporation (72) Inventor Fumio Kajima 5-10-27 Minamiazabu, Minato-ku, Tokyo (72) Inventor Hideaki Takahashi 5-10-27 Minami-Azabu, Minato-ku, Tokyo PP22 TT01 UU04 3C030 DA02 DA05 DA08 DA17 DA26 DA33 DA37 3F025 AD05 AD11

Claims (10)

[Claims] A pair of transport rails provided on both sides of the printed circuit board for transporting the printed circuit board; a moving unit configured to move the pair of transport rails in a direction orthogonal to the transport direction; The movement of the moving means is controlled based on the data of the width of the printed circuit board and the data of the amount of deviation in the conveying direction and the orthogonal direction between each of the rails of the preceding apparatus on the loading side and the succeeding apparatus on the unloading side and the transport rail. The movement of the pair of transport rails is controlled so as to be a distance corresponding to the printed circuit board. Control means for controlling the movement of the apparatus so that the position of the apparatus matches the position of the transfer rail. 2. An origin position detecting means for detecting an origin position of the transport rail, wherein the control means comprises: a front-end device on a loading side with respect to the origin position and a position of a transport reference plane of the transport rail; Based on the data of the displacement amount of each transport reference plane of the rail of the subsequent device, the amount of movement of the moving means at the time of loading and unloading is calculated, and the calculated movement at the time of loading and unloading the transport rail, respectively. 2. The printed board transfer device according to claim 1, wherein the transfer device is configured to be moved by an amount. 3. The moving means includes: a table on which the pair of transport rails are mounted, the table being movable in a direction orthogonal to the transport direction; and moving the one transport rail on the table in a direction in which the table moves. A second moving means for controlling the movement of the second moving means so that an interval between the pair of transport rails is a distance corresponding to a width of the printed circuit board. The printed board transfer device according to claim 1, wherein the transfer control is performed. 4. A printed circuit board inspection apparatus, comprising: a transport device according to claim 1, further comprising an inspection unit configured to inspect the printed circuit board at an intermediate position between the pair of transport rails in the transport direction. . 5. After changing the distance between a pair of transfer rails provided on both sides of the printed circuit board so as to correspond to the width of the printed circuit board to be transferred, when the printed circuit board is loaded, the distance between the pair of transfer rails is set to the loading position of the printed circuit board. The pair of transport rails is moved in a direction perpendicular to the transport direction while maintaining the distance between the pair of transport rails so that the pair of transport rails is located. When the printed board is unloaded, the pair of transport rails is located at the unloading position of the printed board. A method of transporting a printed circuit board, comprising: moving the pair of transport rails in a direction orthogonal to the transport direction while maintaining the distance between the pair of transport rails. 6. An origin position of the pair of transport rails is set in a direction orthogonal to the transport direction, and at the time of loading movement control, the pair of transport rails are moved to a transport reference plane at the loading position with reference to the origin position. Calculating the amount of movement at the time of loading based on the data of the first distance, moving the pair of rails to the loading position, and controlling the unloading movement based on the origin position at the time of the unloading movement control. 6. The method according to claim 5, wherein the amount of movement at the time of unloading is calculated based on data of the second distance to the surface, and the pair of rails are moved to the unloading position. 7. A parallel carry-in path, one of which is a first fixed transfer rail, the other a first movable transfer rail, and a parallel discharge path, one of which is a second fixed transfer rail, and the other is a second movable transfer rail. A table which is arranged between the road and a movable direction in a direction perpendicular to the direction of conveyance of the printed circuit board. The table has a fixed rail and a movable rail movable in the direction perpendicular to the fixed rail. A transport method applied to a printed board transport device provided, wherein the movable rail is moved in the orthogonal direction on the table so that the width of the fixed rail and the movable rail is equal to the width of the printed board. Setting to be equal to each other, measuring a first distance in the orthogonal direction between the first fixed transfer rail and the fixed rail, and measuring the first distance between the first fixed transfer rail and the second fixed transfer rail. Measuring a second distance to a fixed rail; and loading the table based on values of the width of the printed circuit board and the first distance to carry in the printed circuit board on the parallel carry-in path. Moving the printed circuit board in the direction perpendicular to the first fixed transfer rail and the movable rail, and aligning the first movable transfer rail and the fixed rail with each other; Moving the table in the orthogonal direction based on the value of the width of the printed circuit board and the second distance so as to align the second fixed transport rail and the movable rail. And a step of aligning the second movable transfer rail and the fixed rail with each other. 8. A pair of transport rails respectively provided on both sides of the printed board for transporting the printed board, a moving unit for moving the pair of transport rails in a direction orthogonal to the transport direction, It is provided at a position halfway in the transport direction of the pair of transport rails,
Inspection means for inspecting the printed circuit board; moving scanning means for moving and scanning the inspection means along the transport direction; and when inspecting the printed circuit board, the moving means moves the printed circuit board in a direction orthogonal to the transport direction. A printed circuit board inspection apparatus, comprising: a control unit configured to move the inspection unit along the transport direction by the moving scanning unit to execute inspection of the entire substrate surface. 9. The control means according to claim 1, wherein said control means includes: data of the width of said printed circuit board; and a deviation amount in a direction perpendicular to the carrying direction between each of the rails of the upstream device on the loading side and the downstream device on the unloading side. It is to control the movement of the moving means based on each data, to control the movement of the interval between the pair of transport rails to be a distance corresponding to the printed circuit board,
9. The printed circuit board inspection apparatus according to claim 8, wherein when the printed circuit board is carried in, the movement of the preceding apparatus is matched with the position of the transfer rail, and when the printed circuit board is unloaded, the movement control is performed so that the position of the subsequent apparatus is matched with the transfer rail. 10. The inspection means is arranged opposite to the printed circuit board, and a light source for irradiating the printed circuit board with a laser beam, and a light receiving element for detecting a displacement of a projection on the printed circuit board based on a detected position of reflected light. A non-contact type displacement measuring device, wherein the moving scanning means causes the displacement measuring device to sub-scan in the transport direction corresponding to a range of an irradiation point of a laser beam irradiated on the printed circuit board. 10. The printed circuit board according to claim 8, wherein the moving means moves the pair of conveying rails in a direction orthogonal to the conveying direction to move the printed circuit board side in the main scanning direction. Inspection equipment.