JPH06288721A - Automatic inspection device - Google Patents

Abstract

PURPOSE:To automatically and efficiently conduct inspection without depending on manpower for shapes and dimensions of products and to automatically prepare inspection documents by using those data. CONSTITUTION:A standby stage 1, an inspection stage 2, a selection stage 3, an inspection stage 4 and a selection stage 5 are arranged in line, and while a work to be inspected is being fed by a transfer means 9 from the standby stage 1 to the next stage in order, the shape and dimension of the work is detected by camera devices 23 and 24 and inspection documents are prepared by a printer. Defective articles are ejected onto defective article ejection chutes 14 and 19 at the selection stages 3 and 5, and good articles are taken out by a good article take-out chute 17.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention automatically checks the shape of products such as metal, resin, wood, and ceramics (hereinafter referred to as "workpieces") to judge the size and shape of the product, and determines whether the product is good or defective. The present invention relates to an automatic inspection device in which inspection data is automatically created using the data and output as data easily.

[0002]

2. Description of the Related Art In the conventional inspection method, a relatively loose inspection standard is visually inspected, a strict standard is measured with a measuring instrument, and a complicated shape is gauged. Then, a person directly judges the quality, and distinguishes the quality, and creates the inspection document.

[0003]

In the above-described conventional inspection / selection method, humans finally judge the quality. Therefore, in the case of visual inspection or inspection using a measuring instrument, eye habituation, fatigue, etc. Depending on the situation, it may not be possible to make an accurate judgment, or the scale of the measuring instrument may be misread.

Also, in the method of measuring by applying a gauge, since the contact condition of the gauge is confirmed by opening a gap or a dial gauge scale, it is still impossible to make an accurate judgment due to the getting used to the eyes or fatigue. It often happens that the dial gauge is misread.

In addition to this, when a human is inspected, it takes a long time, and in the case of a method of applying a gauge, depending on the shape and size of the item, the shape and size of the jig and the mounting position may be changed. It is necessary to carry out every time, and for this reason, a skilled person and an expert are required, and there is a problem that an expert is also required when preparing the inspection document.

An object of the present invention is to solve the above-mentioned problems of the conventional inspection method and eliminate the need for a person to make a pass / fail judgment in product inspection, dimension measurement, and preparation of inspection documents. It is an object of the present invention to provide a device that can automatically judge pass / fail by a machine and can perform dimension measurement and inspection document creation.

[0007]

In order to solve the above-mentioned problems, the present invention provides a transfer means for sequentially moving a work on a plurality of stages arranged in a line, and a predetermined stage among the respective stages. Is an inspection stage in which image processing is performed by an image pickup device to inspect a predetermined position of a work and an inspection document is created by a printer. The next stage of the inspection stage is a non-defective product and a defective product determined by the inspection stage. We adopted a configuration as a sorting stage for sorting.

[0008]

The present invention has the above-described structure, and the work is sequentially moved on each stage by the transfer means. And
On the inspection stage, the work is imaged by the imaging device to inspect a predetermined position, and the inspection result is printed together with the image by the printer to automatically create the inspection document.

Those which are judged to be non-defective products by the above inspection stage are sent to the next inspection stage through the next sorting stage, whereas those which are judged to be defective products are discharged by the defective product discharge chute in the next sorting stage. . A work judged to be a non-defective product at the final inspection stage is taken out by a non-defective product ejection chute, and a defective product is ejected by a defective product ejection chute.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the embodiment shown in the drawing, 6 is a base frame on which a standby stage 1, an inspection stage 2, a classification stage 3, an inspection stage 4 and a classification stage 5 are arranged in a line from right to left as viewed in FIG. To place.

Reference numeral 9 denotes a work transfer means, which is provided with a moving frame 10 arranged behind each of the stages 1 to 5 and an air cylinder,
By a driving means such as a rack and pinion mechanism, a feed screw mechanism, a cam mechanism, it can be moved left and right and up and down,
Four air chucks 11 are provided at the front part of the moving frame 10 at the same pitch as the arrangement pitch of the stages 1 to 5. Each of the air chucks 11 opens and closes, for example, a pair of left and right fingers by an air cylinder.

The sorting stage 3 has a shaft 1 as shown in FIG.
A defective product discharge chute 14 having a lid 13 that rotates downward about 2 is provided and operated by a driving means 15 such as an air cylinder. Further, the inspection stage 4 is provided with a turntable 16 so that the work is turned.

The sorting stage 5 has a non-defective take-out chute 1
7 and a defective product discharge chute 19 are provided, the non-defective product discharge chute 17 is opened laterally as shown in FIG. 5, the defective product discharge chute 19 is facing forward, and as shown in FIG. A movable chute 21 that tilts backward is provided, and the driving means 22 such as an air cylinder can tilt the movable chute 21 from the position indicated by the solid line in FIG. 6 to the position indicated by the chain line.

Image pickup devices 23 and 24 are provided on the inspection stages 2 and 4, respectively.
5, 26 are provided. The CCD camera 25 takes an image of the front of the work by the mirror 27 provided in front of the inspection stage 2, sends the image signal to a computer in the control device 29 for data processing, identification calculation, and presetting in the vertical direction. A certain position is inspected, an image and a measured value at a predetermined position are printed by a printer, and an inspection document is automatically created.

The CCD camera 26 also images the front of the work by the opposite mirror 30 provided in front of the inspection stage 4, sends this image signal to a computer in the control unit 29 for data processing for identification and calculation, and in advance in the lateral direction. The set position is inspected, the image and the measured value at a predetermined position are printed by the printer, and the inspection document is automatically created. Further, in the inspection stage 4, the work is rotated by the turntable 16 to inspect a predetermined side surface.

In the above construction, the work is put in a hopper (not shown), and the work aligned in a certain direction is fed to the standby stage 1 by an aligner (not shown).

Under the condition that each part is ready, the moving frame 10 at the raised position moves right one pitch toward FIG. 1 with each air chuck 11 open, and then descends to wait for the air chuck 11 at the right end. Understand the work on stage 1. In this state, the moving frame 10 moves up and returns to the left by one pitch, and moves down to open the air chuck 11 to place the work on the inspection stage 2.

After placing the work on the inspection stage 2,
The moving frame 10 moves one pitch to the right with the air chuck 11 open. In the meantime, the next work is supplied onto the standby stage 1.

The work placed on the inspection stage 2 as described above is inspected by the CCD camera 25, and then moved to the sorting stage 3 by being grasped by the second air chuck 11 from the right by the same action as the previous time. .

During the inspection on the inspection stage 2, when the work judged to be good is moved to the selection stage 3, the lid 13 is held horizontally as shown by the solid line in FIG. When it is determined that the product is defective in the stage 2, the lid 13 is lowered as shown by the chain line in FIG. 4, so that the air chuck 11 is opened, and at the same time, the lid 13 slides down and is ejected by the ejection chute 14.

The work on the selection stage 3 is placed on the turntable 16 of the inspection stage 4 by the same action of the moving frame 10 and the air chuck 11 as the above-mentioned action. It is sent to the sorting stage 5.

When it is determined that the work is good on the inspection stage 4, the movable chute 21 is standing vertically as shown by the solid line in FIG. 6, so that the work is taken out along the good picking chute 17.

When it is determined that the work is defective on the inspection stage 4, the drive means 22 is activated by the signal from the computer and the movable chute 21 is inclined as shown by the chain line in FIG. The movable chute 21 slides down and is discharged as a defective product from the discharge chute 19.

[0024]

As described above, according to the present invention, while the work is sequentially moved on the plurality of stages by the transfer means, the image processing is performed by the image pickup device on the predetermined stage to inspect the predetermined position of the work. Since the printer automatically creates inspection documents and classifies good products and defective products, the inspection capability is significantly improved compared to the conventional manual inspection, and there are no mistakes such as human inspection. No reliable test results are obtained.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment.

FIG. 2 is a side view of the above.

FIG. 3 is a plan view of the same.

FIG. 4 is a vertical sectional view taken along the line AA of FIG.

5 is a vertical cross-sectional view taken along the line BB of FIG.

6 is a vertical cross-sectional view taken along the line CC of FIG.

[Explanation of symbols]

 1 Standby stage 2 Inspection stage 3 Sorting stage 4 Inspection stage 5 Sorting stage 9 Transfer means 10 Moving frame 11 Air chuck 14 Defective product ejection chute 16 Turntable 17 Good product ejection chute 19 Defective product ejection chute 23 Imaging device 24 Imaging device

Claims (1)

[Claims] 1. A transfer means for sequentially moving a work is provided on a plurality of stages arranged in a line, and a predetermined stage of each of the stages is subjected to image processing by an image pickup device so as to move to a predetermined position of the work. An automatic inspection device characterized by being an inspection stage for performing inspection and creating an inspection document by a printer, and a stage next to the inspection stage is a selection stage for selecting a good product and a defective product determined by the inspection stage.