JPS63157041A - Inspection instrument - Google Patents

Abstract

PURPOSE:To improve operation efficiency by providing a pallet mount part and a defective takeout part to the same table, and deciding whether or not an inspected body is normal and taking a defective out at the same time. CONSTITUTION:The pallet mount part 16 and defective takeout part 18 are provided to an X-Y table 10 through an X table 14 and a Y table 12 respectively. Then a pallet 17 where a body to be inspected is mounted is mounted on the mount part 16 and photographed successively in an X direction by a TV camera 20 to make a normal/abnormal decision by using the image input, and the result is stored in a data memory corresponding to the mount position of the inspected body on the pallet 17. Then the pallet 17 is mounted at a specific position of the takeout part 18 after the inspection of the inspected body on the pallet 17, and the decision result stored in the data memory so as to operate the suction part 24 of a pick-and-place part 22 for defective takeout. Then a next pellet 17 where a body to be inspected is mounted newly is mounted on the mount part 16 and while the pallet 17 is mounted on the mount part 16 and takeout part 18, the normal/abnormal decision making and the takeout of a defective are performed at the same time.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an inspection device that determines whether a product is acceptable or not, and more particularly relates to an inspection device that can efficiently inspect products and remove defective products. .

(Prior Art) In the past, 100% inspection of products has often been carried out for product control, but in order to determine pass/fail for all products, a pallet with the products to be inspected arranged in a matrix pattern is used. is placed on the X-Y table, and sequentially moved in the X and Y directions to the position of the image input television camera for determining pass/fail of the lined up inspection objects to judge pass/fail for all the inspected objects. There is a configured automatic inspection equipment.

This automatic inspection device moves the image input television camera for pass/fail judgment or the X-Y table on which the inspected objects are placed so that it covers all the inspected objects one by one, and detects defective products. When a defective product is found, it is configured to remove the defective product and then continue the inspection.

(Problems to be Solved by the Invention) Since the pass/fail judgment of the above-mentioned automatic inspection device is electrical processing based on image input, if only the pass/fail judgment of the product is required,
Although it takes a fairly short time, if a defective product is found during the inspection and the defective product is to be removed, the pass/fail determination of the inspected object must be temporarily stopped and the process of removing the defective product must be carried out. Since this operation of removing defective products is a mechanical operation, it inevitably takes a certain amount of time, and when a large number of defective products are produced, the problem is that it takes more time to remove them than to inspect them. There is a point.

Therefore, the present invention has been made in view of the above problems, and its purpose is to simultaneously perform pass/fail determination of products and remove defective products based on the results of the pass/fail determination, thereby making inspections more efficient. The purpose of the present invention is to provide an inspection device that can be used to

(Means for Solving the Problems) In order to solve the above problems, the present invention has the following configuration.

That is, a table on which objects to be inspected are arranged in a matrix over a plurality of rows at predetermined intervals and on which a preceding pallet that is inspected earlier and a succeeding pallet that is inspected later are placed so that they are oriented in the same direction; a feeding mechanism for feeding the table a fixed distance in a fixed direction at intervals of rows of objects to be inspected arranged on the pallet; and a television camera disposed above the trailing pallet for inputting images of the objects to be inspected. , a drive mechanism that relatively drives the trailing pallet and the television camera back and forth in a direction perpendicular to the feeding direction of the feeding mechanism; and a drive mechanism for reciprocating the trailing pallet and the television camera in a direction perpendicular to the feeding direction of the feeding mechanism; A data memory that stores the data of each position in the column and the pass/fail judgment result of the object to be inspected; The present invention is characterized by comprising a take-out mechanism that is controlled to take out test objects from the sent row of test objects based on data previously stored in the data memory.

(Embodiments) Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is an explanatory diagram showing an embodiment of an inspection apparatus according to the present invention.

In the figure, 10 is an X-Y table which is fixedly placed on a predetermined table. 12 is a Y table that moves only in the Y direction on the X-Y table 10, and 14 is an X table that is placed on this Y table 12 and slides in the X direction with respect to the Y table 12. This X table 14 moves only in the X direction relative to the Y table 12, but since it is placed on the Y table 12 and moves,
The X-Y table IO can be freely moved in both the X direction and the Y direction.

Reference numeral 16 denotes a pallet mounting section provided on the X table 14, on which a pallet 17 is placed, on which objects to be inspected for pass/fail determination are arranged one by one at predetermined intervals in the X and Y directions.

Reference numeral 18 denotes a defective product take-out section provided on the Y-table 12, which is a section where the pallet 17 is transferred and placed after the pass/fail judgment has been made on the pallet placement section 16.

A television camera 20 is installed above the pallet placement section 16 and inputs images for pass/fail determination. This television camera 20 is set in advance so that it can focus on the object to be inspected placed on the pallet 17, capture the best image of the product, and input the image clearly.

22 is a pink and place for taking out defective products, and an arm 26 that supports a suction part 24 for taking out defective products protrudes from the side surface of this pink and place 22. This arm 26 reciprocates between one end and the other end of the side surface of the pink and place 22 in parallel to the X direction.

The suction section 24 is for sucking and taking out only defective products from the pallet 17 placed on the defective product take-out section 18, and the tip of the arm 26 is used to pick up objects to be inspected arranged on the pallet 17. The same number of suction heads 25 as are set in one row in the X direction are provided in parallel to the X direction.

A belt conveyor 28 is provided below the other end of the side surface of the pick-and-place 22, and is located below the arm 26 moved to the other end of the pick-and-place 22. 30 is a drive motor that drives the belt conveyor 28.

Reference numeral 32 denotes a chute located below the tip of the belt conveyor 28, and below this chute 32 there is disposed a pallet 34 for defective products for arranging and storing defective products. The defective product pallet 34 is set on an X-Y table 36.

Next, the operation of the above-mentioned inspection device will be explained.

The inspected object to be judged pass/fail is placed at a predetermined position on the pallet, and the pallet on which this inspected object is placed is
The object to be inspected is placed on the valent placement section 16 of the table 14, and images are sequentially photographed by a television camera 20 and images are input, and a pass/fail judgment is made based on the image input.

FIG. 2 is an explanatory diagram for determining pass/fail of image input by a television camera. A uses an image processing device to judge the image input from the television camera 20, and stores the result in a data memory through a central information processing unit (CPU).
The CPU drives and controls the take-out mechanism. B
The image input from the television camera 20 is outputted on a television monitor, the pass/fail judgment is visually performed, the result is stored in a data memory through the CPU, and the CPU drives and controls the take-out mechanism.

FIG. 3(a) is an explanatory diagram showing an example of the arrangement of objects to be inspected on the pallet and the order of pass/fail determination. In the pallet of this embodiment, 10 rows of mounting sections are formed in the X direction and 20 rows in the Y direction, and a total of 200 objects to be inspected can be mounted thereon.

First, the objects to be inspected are judged to be pass/fail one by one in the X direction. At this time, the X table 14 is moved in parallel in the X direction by one object to be inspected, and is photographed by the television camera 20. Pass/fail judgment is made based on this image.

After advancing by 10 columns in the X direction, it is translated in parallel by one column in the Y direction, and then returned to the X direction for pass/fail determination. At this time, the Y table 12 is translated by one column in order to move one column in the Y direction. In this way, the objects to be inspected on the pallet placed on the barre-groove placement section 16 are sequentially folded back and passed or rejected one by one.

The results of this pass/fail determination are stored in the data memory.

FIG. 3(b) is an explanatory diagram showing an example in which the pass/fail results of the object to be inspected are stored in the data memory.

In this data memory, pass/fail determination results are stored in correspondence with the placement positions of the objects to be inspected placed on the pallet. In FIG. 3(b), the object to be inspected that has been determined to be defective is indicated as 1.

When all the objects on the pallet have been inspected, the inspected pallet is then transferred to the defective product removal section 18.
The product is transferred to a predetermined position above, and the determination result is stored in the data memory in order to operate the suction section 24 of the Pink & Place 22 for removing defective products. Further, the next pallet on which the object to be inspected for a new pass/fail determination is placed is set on the pallet mounting section 16.

In this state where the pallet is placed on the valet placement section 16 and the defective product removal section 18, pass/fail determination and defective product removal are performed simultaneously.

That is, in the bullet placement section 16, pass/fail judgment is made sequentially from the X direction as described above.
During the time period in which the pass/fail judgment for one row in the X direction is being made, the defective products for one column of the corresponding column of the pallet placed on the defective product take-out unit 18 are determined based on the previous pass/fail judgment result. is taken out. As mentioned above, the adsorption section 24
has a suction head 25 corresponding to one row in the The defective products are removed by moving to the other end of the AND place 22 and releasing the defective products onto the belt conveyor 28.

Note that air suction, electromagnetic suction, etc. are suitable for the suction part 24, but depending on the shape of the object to be inspected, it may be taken out by mechanically clamping or the like.

In this way, since the suction unit 24 is operated only once for one row in the X direction, defective products can be easily taken out within the time required for pass/fail determination in the X direction.

When the judgment for one column in the X direction is completed, as mentioned above, the Y
The pallet moves one row in the direction. This movement in the Y direction is achieved by moving the Y table 12 by one row, so both the pallet placed on the pallet placement section 16 and the pallet placed on the defective product removal section 18 are one column. Move parallel by a column. Therefore, the pallet mounting section 1
The object to be inspected placed on the pallet above 6 is 1 in the X direction.
Each time the inspection is completed row by row, the objects to be inspected on the defective product removal section 18 are removed one row at a time, and since the two pallets are formed in the same shape, the pallet placement section 1
At the same time as the inspection of the object to be inspected on 6 is completed, the removal of the defective object on the defective object removal section 18 that was previously determined to be pass/fail is completed.

In this way, the pallets with the objects to be inspected arranged in a matrix are sequentially placed on the pallet mounting section 16, and
By transferring the pallet on which the objects to be inspected that have been judged to be pass/fail immediately before that are placed to the defective product removal section 18, the defective products are removed according to the inspection results stored in the data memory, and at the same time, the new objects to be inspected are removed. Pass/fail judgment can be made. As described above, according to the inspection apparatus of this embodiment, defective products are removed within the time for pass/fail judgment, so the time required is only the time for pass/fail judgment, and the extra time required to take out defective products is eliminated. It never takes.

In addition, the feeding of the pallet to the pallet placement section 16, the transfer of the pallet from the barre/throat placement section 16 to the defective product removal section 18, and the removal of the pallet after taking out the defective products on the defective product removal section 18 are carried out by a robot hand. It can be easily automated using, etc.

The chute 32 guides defective products transferred by the belt conveyor 28 to a defective product pallet 34.
By sequentially moving the X-Y table 36 to a predetermined position each time a defective product passes through the chute 32, the defective products can be arranged and stored on the defective product pallet 34.

Although the pallet of the above-mentioned embodiment is for placing 200 objects to be inspected, various shapes are possible for the number of objects to be placed and the shape of the pallet.

Furthermore, the inspection may be performed by moving a television camera for inputting images of the object to be inspected, or the inspection may be performed to identify non-defective items or items containing foreign materials instead of defective items.

Furthermore, instead of folding and inspecting one row in the X direction as described above, it can be configured to perform inspection on one row in the Y direction, or it can be configured to inspect multiple rows and then take out multiple rows at the same time. It is also possible to do so.

(Effects of the Invention) According to the inspection device of the present invention, as described above, the pallet placement section and the defective product take-out section are provided on the same table, and defective products etc. can be taken out within the pass/fail judgment time of the inspected object. Since the structure is configured to allow for continuous product inspection, it is possible to remove defective products within the time required for product pass/fail judgment, and to efficiently make pass/fail judgments. This has the remarkable effect of not only making it possible to further improve the quality of the product, but also making the inspection unmanned by automating the movement of the pallets.

Although the present invention has been variously explained above with reference to preferred embodiments, the present invention is not limited to these embodiments, and it goes without saying that many modifications can be made without departing from the spirit of the invention. It is.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing an embodiment of the inspection device according to the present invention, FIG. 2 is an explanatory diagram showing pass/fail judgment of image input by a television camera, and FIG. An explanatory diagram showing an example of the arrangement, and (b) an explanatory diagram showing an example of a data memory of test results. 10...X-Y table, 12...Y table,
14...X table, 16...Bullet Mf
fiEilE, 17...Pallet, 18...Defective product removal unit, 20...TV camera, 22...Pink and place, 24...Adsorption unit, 25...
Suction head, 26... Arm, 28... Belt conveyor, 30... Drive motor, 32... Shooter, 34... Valet for defective products, 36... X
-Y table. Fig. 1 Fig. 2 - 1986 Patent Application No. 305129 2, Title Inspection Device 3 of the Invention, Person Who Performs Supplementary IL Relationship between patent applicant 4 and agent

Claims (1)

[Claims] 1. The objects to be inspected are arranged in a matrix in a plurality of rows at predetermined intervals, and the preceding pallet that was inspected earlier and the succeeding pallet that was inspected later are oriented in the same direction. a table on which objects to be inspected are placed; a feeding mechanism that feeds the table by a fixed distance in a fixed direction at intervals of rows of objects to be inspected arranged on the pallet; a television camera for image input; a drive mechanism that relatively drives the trailing pallet and the television camera back and forth in a direction orthogonal to the feeding direction of the feeding mechanism; a data memory for storing data of each position of each column of the objects to be inspected and the pass/fail judgment results of the objects to be inspected; and a take-out mechanism controlled to take out objects to be inspected from a row of objects to be inspected that have been fed by a fixed distance on a preceding pallet based on data previously stored in the data memory. Characteristic inspection equipment. 2. Claims characterized in that the television camera is fixedly provided above the trailing pallet, and the trailing pallet reciprocates on the table in a direction orthogonal to the feeding direction of the feeding mechanism. Inspection device according to item 1. 3. The inspection apparatus according to claim 1, wherein the trailing pallet is placed on the table, and the television camera reciprocates in a direction perpendicular to the feeding direction of the feeding mechanism.