JPS60220850A - Container inspecting device - Google Patents

Abstract

PURPOSE:To shorten an inspection time by providing a light emission part to one side of a bottle which moves linearly and a photodetection part to the other side, and moving the photodetection part according to the movement of the bottle so that the photodetection part faces the center of the bottle all the time. CONSTITUTION:The bottle 1 to be inspected moves linearly and receives light from the light emission part 10. The light is transmitted through the rotating bottle 1 and photodetected by a reflecting mirror 22, which is driven by a driving means to rotate following up the moving bottle 1 on a belt conveyor so that an image of the center part of the bottle 1 is projected on a photoelectric converting element all the time. The light reflected by the reflecting mirror 22 enters a photoelectric converter 23 and is converted into the quantity of electricity such as a voltage, which is displayed by a decision circuit; if there is sticking matter on the bottle 1, the voltage value of the part decreases greatly. Consequently, an inspector easily decides on a defective bottle.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a container inspection device for inspecting deposits, scratches, etc. on containers.

Generally, due to cleaning errors, deposits may remain on bottles, especially on the inner surface, and some bottles may have large scratches, etc., and it is not desirable to use bottles with such defects as products. Therefore, conventional attempts have been made to inspect containers for the presence or absence of such defects before filling them with contents.

Conventional inspection equipment temporarily stops a container, such as a bottle, moving in a straight line, shines light from one side of the container, rotates the container in that position, and transmits light through the container using a photoelectric converter placed on the other side of the container. The entire layer of the container was exposed to light and inspected for deposits. however,
This method has the drawback that the inspection time is long and the work is troublesome because the container is first stopped and then rotated.

An object of the present invention is to provide a container inspection device that eliminates the drawbacks of the prior art as described above.

According to the present invention, it is possible to inspect the container while moving it in a straight line.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Referring to FIG. 1, there is shown an inspection device according to the invention, which includes a transport means 2 for linearly moving and rotating a container to be inspected, such as a bottle 1. In the illustrated embodiment, this conveying means includes a conventional linear belt conveyor 3 and a plurality of rotating rows 2 provided on this conveyor.
It consists of 4. These rotating rollers are arranged to surround the bottle 1 and rotate the bottle.

Note that the conveyance means may be replaced by a rotary table that moves linearly. In this case the bottles are placed on this rotating table.

A light emitting section 10 is arranged 5 on one side of the bottle 1, and a light receiving section 20 is arranged on the other side of the bottle. The light emitting unit 10 is the light source 1
1 and a diffuser plate 12 placed in front of this light source. In the illustrated embodiment, the light receiving section 20 includes a driving means 21, a reflecting mirror 22 attached to the driving means, and a photoelectric converter 23 that receives reflected light from the reflecting mirror.

Although the photoelectric converter is one-dimensional in the illustrated embodiment, it may also be two-dimensional. Drive means 21
is connected to a timing circuit 24, which causes rotational movement proportional to the moving speed of the belt conveyor 3. Incidentally, reference numeral 30 is a lens that collects reflected light from the reflecting mirror onto a photoelectric converter.

Further, a determination processing circuit 40 is connected to the photoelectric converter 23 .

The above device of the invention will be more clearly understood from the following explanation of its operation.

First, a bottle 1 to be inspected is linearly moved by a conveying means and receives light from a light emitting section 10 as shown in FIG. In this case, the bottle is also rotating at the same time. The light from the light emitting section 10 is transmitted through the bottle and is received by the reflecting mirror 22. It should be noted that this reflecting mirror is rotated by a driving means to follow the moving bottle on the belt conveyor so that the image of the center of the bottle is always reflected on the photoelectric conversion element.

The light thus reflected by the reflection mirror enters the photoelectric converter 23, where it is converted into an electrical quantity, for example, a voltage, which is displayed by the determination processing circuit as shown in FIG. 2. bottle 1
If there is a kimono as shown by black dot 45 in Figure 2,
The voltage value of this part of the kimono (A) drops significantly as shown by reference numeral 50.

Therefore, inspectors can clearly see defective bottles by looking at this.

According to the present invention, since the light-receiving section is moved to follow the movement of the bottle, it is not necessary to temporarily stop the bottle as in the conventional case, and inspection can be performed while moving the bottle, which has the great effect of extremely high inspection speed. There is. Furthermore, by configuring as in the present invention, the light emitting section and the light receiving section are each single, which simplifies the structure.

In the above embodiment, the reflecting mirror is attached to the driving means, but several photoelectric converters may be attached directly to the driving means.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of the inspection apparatus of the present invention, and FIG. 2 is a graph showing the inspection results. 1. Bottle 2..Transporting means 10..Light emitting section 20.. - Light receiving section 21 Driving means 22..Reflecting mirror 23. Photoelectric converter patent applicant Santo IJ Co., Ltd. (5 people) End 2 Closed May 74, 1980 Kazuo Wakasugi, Commissioner of the Patent Office 1. Indication of the case Patent Application No. 77231 of 1988 2. Name of the invention Container inspection device 6. Person making the amendment Relationship with the case Patent Applicant's Address Name (190) Suntory Ltd. 4. Contents of amendment in Column 6 of [Detailed Description of the Invention] of the agent's specification The description in the specification is amended as shown in the table below. Page Line Before correction After correction 2 17 Work Equipment troublesome Expensive 5 7 The inspector sees this in the judgment processing circuit.

Claims (5)

[Claims] (1) It is equipped with a conveying means that moves the bottle in a straight line while rotating it, a light-emitting part placed on one side of the bottle, and a light-receiving part placed on the other side of the bottle, with the light-receiving part always being at the center of the bottle. A container inspection device characterized in that it is movable to follow the movement of a bottle so as to catch a bottle. (2) The device according to claim 1, in which the light emitting section comprises a light source. (3) The device according to claim 1, wherein the light emitting section includes a diffuser plate disposed in front of the light source. (4) The device according to claim 1, wherein the light receiving section comprises a driving means and a photoelectric converter attached to the driving means. (5) The light receiving section is attached to the driving means and the driving means.