JPH11286318A - Work carrying and processing method and its device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform carrying a work and processing the work in parallel, and thereby shorten time required by these operations. SOLUTION: A positioning step positioning a work 7 over a first table 2 is made in a positioning part. Next, the work 7 is moved while being rested over the first table 2 so as to allow a processing step to be made, at this point, a second table 3 is moved to the aforesaid positioning part so as to allow a positioning step positioning the work 7 over the second table 3 to be made. Next, the work 7 having been processed, is moved while being left over the first table 2 so as to allow a discharging step to be made at a discharge part, and at this point, the work 7 having been positioned is moved while being left over the second table 3 so as to allow the processing step to be made. From now on, the respective steps for positioning, processing and discharging shall be performed in parallel.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, carrying out a work to a processing unit, a work to a work, and a work after processing, when performing a processing such as an inspection on a work such as a printed circuit board. The present invention relates to a work transfer processing method and a processing apparatus used for the method.

[0002]

2. Description of the Related Art Conventionally, when inspecting a work to be processed, for example, a printed board, the printed board is inspected by the following method. The printed circuit board that has completed the previous process is moved by a conveyor to a processing unit for inspection. Next, in the processing section, positioning is performed by a method such as holding a printed circuit board in order to eliminate deviations in the direction, angle, and position with respect to the inspection device. Then, the printed board is inspected as a processing step. After the inspection, the positioning of the printed circuit board in the holding state is released. Next, the printed circuit board having undergone the inspection is moved from the processing section to a post-process by a conveyor.

[0003]

However, the conventional work transfer processing method has the following problems. That is,
Since the positioning and release of the printed circuit board are performed in the processing section, it is not possible to perform only the inspection of the printed circuit board in the processing section. Therefore, the processing unit waits for positioning and release. In addition, the conveying speed of the conveyor is restricted accordingly. Therefore, it is very difficult to shorten the time required for transporting and inspecting a series of printed circuit boards.

The present invention has been made in view of such a conventional problem, and conveys a workpiece and processes the workpiece in parallel, thereby shortening the time required for transporting and processing the workpiece. , A work transfer processing method, and an apparatus.

[0005]

According to a first aspect of the present invention, a positioning section performs a positioning step of placing and positioning a work on a first table in a positioning section, and then moving the work while placing the work on the first table. , Causing the processing unit to stop and perform a processing step. While performing the processing step, move the second table to the positioning unit and perform a positioning step of mounting and positioning a work on the second table. After performing the processing step on the work on the first table, the work is moved while being placed on the first table, and the discharging section releases the positioning of the work and discharges the work. In the meantime, the positioned work on the second table is moved while being placed on the second table, Perform the above processing steps in,
Hereinafter, there is provided a workpiece transfer processing method characterized by sequentially performing the positioning step, the processing step, and the discharging step in parallel.

It is most remarkable in the present invention that a plurality of tables perform a series of steps of positioning, processing and discharging, and one table performs a processing step while the other table performs a positioning step or discharging. Is to do the steps.

[0007] Examples of the work include a printed circuit board and a lead frame. Examples of the processing performed on the work in the processing step include inspection of the work, mounting of components on the work, and marking on the work.

Next, the function and effect of the present invention will be described.
In the work transfer processing apparatus of the present invention, the processing performed on the work is performed in the processing unit. On the other hand, the positioning of the work on the first and second tables is performed in the positioning section, and the release of the positioning of the work is performed in the discharge section. That is, the processing section can perform only the processing steps.

Therefore, while performing the above processing steps,
The positioning step or the discharging step can be performed simultaneously, and the time required from the positioning step to the discharging step can be reduced. Accordingly, the speed at which the work is carried into the positioning section and the speed at which the work is carried out from the discharge section can be increased. Therefore, the time required for transporting and processing the work can be reduced.

Next, it is preferable that a plurality of types of the above-mentioned processing steps are performed. In this case, for example, a plurality of processing steps such as the above-described inspection and mounting can be continuously performed. Therefore, there is no need to perform the discharging step and the positioning step between each processing step. Therefore, the processing for the work can be performed quickly.

Next, a third aspect of the present invention is to provide a plurality of work transporters, and the workpiece transporter successively transports a work to a positioning step, a processing step, and a discharge step, and performs the above steps. A transfer processing device, wherein the work transfer device includes a table on which a work is placed and positioned, a lifting device for moving the table up and down, a moving device for moving the table and the lifting device in a horizontal direction, and the moving device. And a servo mechanism connected to the workpiece transfer processing device.

What is most notable in the present invention is that the work transfer device has an elevator and a moving device, and the work transfer processing device is provided with a plurality of the work transfer devices.

The work transfer processing device has a set of a loader, a processing device, and an unloader for a plurality of the work transfer devices. The positioning section is provided with the loader for performing the positioning step, the processing section is provided with the processing device for performing the processing step, and the discharging section is provided with the unloader for performing the discharging step.

Next, the operation and effect of the present invention will be described.
The operation of the first work transfer device of the plurality of work transfer devices will be described. First, in the positioning step, the elevator of the work transfer machine raises the table. Then, the work is placed and positioned on the table by the loader. Then, the moving device of the work transfer device horizontally moves the table and the elevator to the processing section. The stop position of the table is automatically controlled by the servo mechanism. This is performed not only in the positioning step but also in all steps.

Next, in the processing step, the work positioned on the table is processed by the processing device. Then, the moving device of the work carrier horizontally moves the table to the discharge section.

Next, in the discharging step, the workpiece after the processing is released from the positioning and discharged by the unloader. Then, the moving device of the work transporter horizontally moves the table from which the work has been discharged to the loader.

Then, the work transfer machine repeatedly performs the transfer from the positioning step to the processing step, the transfer from the processing step to the discharge step, and the transfer from the discharge step to the positioning step. The work carried by the work carrier is subjected to the respective operations in the above steps.

Next, of the plurality of work transfer machines, another work transfer machine will be described. The operation of the other work transfer devices is the same as described above. However, the second work carrier starts operation one step behind the first work carrier. Therefore, each work transfer machine performs different steps in parallel.

According to the work transfer processing apparatus, as described above, the steps of positioning, processing, and discharging for performing processing on a work can be performed in parallel. Therefore, the work can be efficiently processed without any time loss.

Next, it is preferable that each of the tables in each of the work transfer devices has a positioning tool. In this case, since each of the tables has a positioning tool, positioning can be performed when the table is transported to the positioning unit. Therefore, the time required for the positioning step can be reduced, and the efficiency can be improved.

Next, as in the fifth aspect of the present invention, each of the tables can be positioned vertically with respect to each other, can be independently moved in the horizontal direction, and can be moved to the reference position in the positioning step. It is preferably provided so as to be able to ascend to the position and to be able to descend in the discharge step.

In this case, the respective tables sequentially move in the horizontal direction to the respective steps in the transfer from the positioning step to the processing step and in the transfer from the processing step to the discharge step. Next, in the transport from the discharge step to the positioning step, the tables are lowered, then horizontally moved in the opposite direction to the above, and are raised to the reference position in the positioning section.

Therefore, the work transfer device can circulate and transfer the table. Further, even if a plurality of the tables exist during the cycle, the tables can be smoothly transferred in parallel without interfering with each other.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments A work transfer processing method according to an embodiment of the present invention and an apparatus used therefor will be described with reference to FIGS. This example is an example in which a pattern portion is inspected for defects in a processing step on a printed circuit board as a work as an object to be processed.

The work transfer processing method of the present embodiment will be outlined. In the work transfer processing method, as shown in FIGS. 1 and 2, a positioning step is performed in which the work 7 is placed on the first table 2 and positioned in the positioning section (second step). Next, the work 7 is moved while being placed on the first table 2 and stopped by the processing unit to perform processing steps (fourth, sixth, and eighth steps). The processing steps are performed in two types. While performing this processing step, the second table 3 is moved to the positioning section, and a positioning step of mounting and positioning the work 7 on the second table 3 is performed (eighth step).

Next, the work 7 on the first table 2
After the processing step is performed, the work 7 is moved while being placed on the first table 2 to release the positioning of the work 7 in the discharge section, and a discharge step of discharging the work 7 is performed (tenth step). Process). In the meantime, the work 7 positioned on the second table 3 is moved while being placed on the second table 3, and the processing section performs the processing steps (tenth, twelfth, and fourteenth).
Process). Hereinafter, the positioning step, the processing step, and the discharging step are sequentially performed in parallel.

Next, an apparatus used in the above-described work transfer processing method will be outlined. The workpiece transfer processing device 1 is shown in FIGS.
As shown in FIG. 7, four work transfer machines 12 and 13 are provided, and the work 7 is transferred by the work transfer machines 12 and 13 successively to the positioning step, the processing step, and the discharge step, and the above steps are performed. . As shown in FIGS. 5 to 7, the work transfer device 12 includes a first table 2 on which the work 7 is placed and positioned, a lift 21 for lifting and lowering the first table 2, a first table 2 and a lift A moving device 22 for moving the device 21 in the horizontal direction;
And a servo mechanism 23 connected to the moving device 22.
Similarly, the work carrier 13 has a second table 3, a lift 31, a moving device 32, and a servo mechanism 33.

The details will be described below step by step. As shown in FIG. 3, the work transfer processing apparatus 1 is configured such that the work transfer machines 12 and 13 are configured as a pair, and these are provided in two lines in parallel. The work transfer machines 12 and 13 have a symmetrical structure because the tables are arranged to face each other.

As shown in FIG. 4, the first table 2 of the work transfer device 12 is a plate-like body on which two works 7 (FIG. 8) are placed. At the position corresponding to the positioning hole 70, the positioning hole 70
And a pin-shaped positioning tool 27 having a diameter smaller than the diameter of the hole. The first table 2 has a plurality of air outlets (not shown) at positions where the respective works 7 are placed. Similarly, the second table 3 in the work transfer machine 13 also has a positioning tool 37 and an air outlet.

As shown in FIGS. 6 and 7, the first table 2 and the second table 3 can be vertically positioned with respect to each other, and can be independently moved in the horizontal direction. Further, in the positioning step, it is provided so as to be able to ascend to a reference position H (FIGS. 4 and 5), and in the discharging step, it is provided so as to be able to descend. Further, the first table 2 and the second table 3 move along the same trajectory. Therefore, the positioning portion of the work transfer device 12 and the positioning portion of the work transfer device 13 are located at the same position. This is the same for the processing unit and the discharge unit.

Next, the elevator 21, the moving device 22, and the servo mechanism 23 in the work transfer device 12 will be described. The elevator 21 is, as shown in FIG.
3, a traveling machine 214 slidably disposed on the side surface of the traveling column 213, and a cylinder (not shown) for raising the traveling machine 214. The traveling machine 214
The first table 2 is fixed to the side surface.

As shown in FIGS. 6 and 7, the moving device 22 includes a rail 225 provided in the horizontal direction and a ball screw 226 provided in parallel with the rail 225. The elevator 21 is slidably disposed on the rail 225. In addition, the ball screw 22
The elevator 21 is fixed to a female screw portion 6 (not shown) of the elevator. The servo mechanism 23 is connected to the ball screw 226 to be controlled, and includes a servomotor 237 for driving the ball screw 226 and a position detection unit (not shown).

On the other hand, in the work transfer machine 13 as well,
Similarly to the above, the elevator 31 includes the traveling column 313 and the traveling machine 3.
14 and a cylinder (not shown). The first and second tables 2 and 3 are disposed on the opposite side of the work transporter 12 from the elevator 21 while sandwiching the first table 2 and the second table 3 therebetween. The moving device 32 includes a rail 325 and a ball screw 326.
And is arranged in parallel with the moving device 22 of the work carrier 12. The servo mechanism 33 includes a servomotor 337 and a position detection unit (not shown).

Next, the above-described work transfer processing apparatus 1
As shown in FIG. 1, a set of a loader 15, processing devices 16, 17 and an unloader 18 is provided for the two work transporters 12, 13. The loader 15 for performing the positioning step is provided in the positioning section, the processing devices 16 and 17 for performing the processing step are provided in the processing section,
The unloader 1 performs a discharging step in the discharging section.
8 is arranged.

As shown in FIGS. 3 and 4, the loader 15 is provided with two pairs of the work transfer machines 12,
As compared with 13, the positioning unit is configured to move in the horizontal direction between the positioning units of each series, and to move in the vertical direction above each positioning unit. The loader 15 has a carry-in conveyor 151 for carrying the work 7. Further, the loader 15 is provided with an air suction port 150 (FIG. 4) at a position corresponding to an air ejection port (not shown) of the first table 2 and the second table 3.

The processing units 16 and 17 are the same as those shown in FIG.
As shown in FIG. 5 to FIG. 7, in each system, the work carrier 12 is disposed between the work carrier 12 and the work carrier 13.
The processing device 16 is a camera that detects irregularities (defects) generated in the height direction in the pattern portion 75 (FIG. 8) of the printed circuit board serving as the work 7.
Is a camera that detects unevenness generated in the horizontal direction.

As shown in FIG. 3, the unloader 18 is provided with two pairs of the work transfer machines 1 provided in two lines.
With respect to 2 and 13, it is configured to move in the horizontal direction between the discharge units of each series and to move in the vertical direction above each discharge unit. The unloader 18 has an unloading conveyor 181 for unloading the work 7. Above the unloading conveyor 181, there is provided a device 19 for unloading a defective work 79. The unloader 15 and the payout device 19 are also provided with an air suction port, similarly to the loader 15.

FIG. 8 shows the bonding pad surface of the printed circuit board as the work 7. Also,
Reference numeral 75 denotes a pattern portion, and reference numeral 76 denotes a chip mounting portion.

Next, the operation and effect of this embodiment will be described. The operation of the first work transfer device 12 of the two work transfer devices 12 and 13 will be described. First, in the positioning step, the elevator 21 raises the first table 2 to a reference position H (FIGS. 4 and 5) using a cylinder (see a fourteenth step in FIG. 2). During this time, as shown in FIG.
1 is transferred to the air suction port 15
While being sucked by 0, it is horizontally moved to above the first table 2 (first step in FIG. 1).

Then, the loader 15 shown in FIG.
As shown in FIG. Next, as shown in FIG. 4B, the loader 15 descends to the first table 2 and stops sucking air from the air suction port 150 to release the suction of the work 7. As a result, the work 7 is placed on the first table 2 by its own weight. At this time, the work 7
The positioning hole 70 is inserted into the positioning tool 27 of the first table 2 and positioned on the first table as shown in FIG. 4C (the second table in FIG. 1). Process).

As shown in FIGS. 6 and 7, by driving the servo motor 237, the ball screw 226 as the moving device 22 moves only the work 7 on the first side on the first table 2 to the above-mentioned position. The processing device 16
The first table 2 is horizontally moved below the processing device 16 so as to be located below (the third step in FIG. 1). The stop position of the first table 2 is automatically controlled by the servo mechanism 23. This is performed not only in the positioning step but also in all steps.

Next, in the above processing steps, as shown in FIGS. 6 and 7, the processing device 16 performs a defect inspection on the work 7 on the head side in a height direction. Then, the moving device 22 horizontally moves the first table 2 below the processing device 17 in the same manner as described above (the fourth and fifth steps in FIG. 1). Next, the processing device 1
7 inspects the work 7 on the head side for a defect generated in the horizontal direction. At the same time, the processing unit 16
Performs a defect inspection on the work 7 on the rear side positioned on the first table 2 in a height direction. Then, the moving device 22 horizontally moves the first table 2 toward the discharge section (steps 6 and 7 in FIG. 1).

Then, the processing device 17 performs a defect inspection in the horizontal direction on the work 7 on the rear side in the same manner as described above. Then, the moving device 22 horizontally moves the first table 2 to the discharge section (the eighth and ninth steps in FIG. 1).

Next, in the discharging step, the work 7 after the processing is slightly lifted up by being blown out of the air from the air outlet of the first table 2, and the positioning tool 27 is lifted.
It is easy to get out of. And the above unloader 1
8 moves horizontally to the first table 2 and
It descends to the table 2. Then, the work 7 is sucked by sucking air from the air suction port, and the work 7 is raised as it is (the tenth process in FIG. 1 and the first process in FIG. 2).
1 step).

Then, as shown in FIG. 3, the unloader 18 discharges the workpiece 7 having been subjected to the above two types of defect inspection onto a carry-out conveyor 181. Good work 71
Is transported on the carry-out conveyor 181 as it is.
On the other hand, the defective work 79 is discharged by the payout device 19 and stocked on the defective product table 195.

On the other hand, the first table 2 from which the work 7 has been discharged is horizontally moved to the positioning portion by the moving device 22 (steps 12 and 13 in FIG. 2).

The work transfer device 12 repeats the transfer from the positioning step to the processing step, the transfer from the processing step to the discharge step, and the transfer from the discharge step to the positioning step. The work 7 transferred by the first table 2 of the work transfer device 12 is subjected to each operation in each of the above steps.

Next, the two work transporters 12, 13
Among them, another work transporter 13 will be described. The operation of the work transfer device 13 is also performed by the work transfer device 1.
The operation is the same as that of the second operation. However, the second work carrier 13 starts operation one step behind the first work carrier 12, that is, six steps later (see FIG. 1). Therefore, the work transfer device 12 and the work transfer device 13 perform different steps in parallel.

That is, as shown in the eighth step of FIG. 1, while the work 7 on the first table 2 of the work transfer machine 12 is being inspected for defects, the work 7 is placed on the second table 3 of the work transfer machine 13. The work 7 is positioned. Further, as shown in the tenth step of FIG. 1, while the work 7 on the first table 2 is being discharged, the work 7 on the second table 3 is subjected to a defect inspection. Further, as shown in a sixteenth step of FIG. 2, while the work 7 is positioned on the first table 2, the work 7 on the second table 3 is discharged.

The states of both tables are the same as those in the 20
In the process, it is equal to the sixth process in FIG. Therefore, hereinafter, the first table 2 and the second table 3
The states shown in the seventh to twentieth steps are repeated.

According to the work transfer processing apparatus 1, as described above, the positioning and processing for processing the work 7 can be performed.
Each step of processing and discharging can be performed in parallel with the first table 2 and the second table 3. for that reason,
Processing can be efficiently performed on the work 7 without time loss.

Further, as shown in FIG. 5, the first table 2 and the second table 3 respectively have positioning tools 27 and 3 respectively.
Since the table 7 is provided, the work 7 can be positioned when both tables are transported to the positioning section.
Therefore, the time required for the positioning step can be reduced, and the efficiency can be improved.

Further, as shown in FIG. 6, the first table 2 and the second table 3 are horizontally moved to the respective steps in the transfer from the positioning step to the processing step and the transfer from the processing step to the discharge step. Move in the direction. Next, in the transport from the discharge step to the positioning step, each of the tables is lowered, then moves horizontally in the opposite direction to the above, and rises to the reference position H at the positioning section.

Therefore, the work transfer devices 12 and 13
Can circulate and convey each table. Further, even if two tables exist during the cycle, the two tables do not interfere with each other, and the two tables can be smoothly transported in parallel.

The work transfer processing apparatus 1 is provided with a pair of work transfer machines 12 and 13 in two lines. Therefore, in one system, there is an interval of four processes from the time when the loader 15 positions the work 7 on the work transfer machine 12 to the time when the work 7 is next positioned on the work transfer machine 13 (see FIG. 2). . Therefore, during this time, the loader 15 moves the work transporters 12, 1 in the other system.
The work 7 can be positioned at 3 and the positioning can be performed alternately between the two systems. The unloader 18 also
Similarly, the work 7 can be discharged.

Therefore, the time for waiting for positioning and discharging of the work 7 can be reduced, so that the carrying speed of the carry-in conveyor 151 and the carry-out conveyor 181 can be improved. Therefore, the efficiency can be further improved.

[0057]

As described above, according to the present invention, the work transfer and the processing to the work are performed in parallel, and the work transfer and processing time can be reduced. , And equipment can be provided.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating the operation of a work transfer processing method according to an embodiment.

FIG. 2 is an operation explanatory view of the work transfer processing method, following FIG. 1;

FIG. 3 is a plan view of the work transfer processing apparatus according to the embodiment.

FIG. 4 is a front view illustrating a work positioning sequence according to the embodiment;

FIG. 5 is a side view of the work transfer device and the processing device according to the embodiment.

FIG. 6 is a front view of the work transfer device and the processing device according to the embodiment.

FIG. 7 is a plan view of a work transfer device and a processing device according to the embodiment.

FIG. 8 is a plan view of a work according to the embodiment.

[Explanation of symbols]

 1. . . Work transfer processing device, 12, 13. . . Work carrier, 15. . . Loader, 16,17. . . Processing device, 18. . . Unloader, 2. . . First table, 21. . . Elevator, 22. . . Mobile device, 23. . . Servo mechanism, 27. . . Positioning tool, 3. . . 6. second table, . . work,

Claims (5)

[Claims] A positioning step of placing and positioning a work on a first table in a positioning section, moving the work while placing the work on the first table, and stopping the processing section to process the work; Steps are performed, and while this processing step is being performed, the second table is moved to the positioning section, and a positioning step of mounting and positioning the work on the second table is performed. After performing the processing step, the work is moved while being placed on the first table, and the discharging section releases the positioning of the work and performs a discharge step of discharging the work. The above positioned work is moved while being placed on the second table, and the processing section performs the processing step. And carrying out the positioning step, the processing step, and the discharging step in this order in parallel. 2. The method according to claim 1, wherein the processing steps are performed in plural types. 3. A plurality of work transporters are provided, and the workpiece transporter positions a work, a processing step,
A work transfer processing device that transfers the work successively to the discharge step and performs each of the steps. The work transfer device includes a table for placing and positioning a work, an elevator for moving the table up and down, A work transfer processing device comprising: a moving device for moving a table and an elevator in a horizontal direction; and a servo mechanism connected to the moving device. 4. The apparatus according to claim 3, wherein each of the tables in each of the work transfer devices has a positioning tool. 5. The apparatus according to claim 3, wherein each of the tables can be positioned vertically with respect to each other.
A workpiece transfer processing device which can be independently moved in a horizontal direction, is provided so as to be able to ascend to a reference position in the positioning step, and is provided so as to be able to descend in a discharging step.