JPH0450951Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention particularly relates to a cleaning device for removing dust.

[Conventional technology]

Conventionally, visual inspection is performed to remove defective powders and foreign substances by inspecting the appearance of powder and granules such as pharmaceuticals (fine particles, granules, powder), foods (powder raw materials, grains), industrial materials (ceramics powder), etc. Various devices have been proposed.

FIG.
FIG. 2 is a schematic explanatory diagram showing an appearance inspection device disclosed in Publication No. 210929. This visual inspection device consists of two transparent rotating cylinders 20 and 21 that rotate around a central axis.
are arranged in parallel to face each other so as to form a powder/grain material falling path S between them, and the powder/grain material A is dropped from directly above this powder/grain material falling path S. Powder falling passage S
A defective particle removal device 22 and a good particle collection container 23 are installed in this order below. The defective particle removal device 22 removes defective particles by air blowing or suction.

The transparent rotating cylinders 20 and 21 are made of glass, plastic, etc., and are rotated in opposite directions such that the direction of rotation in the powder falling passage S is downward, as shown by arrows _X1 and _X2 . .

A transmission light source 26 is housed in one of the transparent rotating cylinders 20 and 21, a reflection light source 27 is housed in the other cylinder 20, and a half mirror 28 is placed in front of the reflection light source 27. Placed.

In order to inspect the appearance of the powder or granule material A, that is, to remove defective products such as chips or cracks or foreign objects from the powder or granule material A,
Light is emitted from the transmission light source 26 toward the powder/grain material falling path S, and the light that passes through the gap between the falling powder/grain materials A is reflected by the half mirror 28 and enters the line sensor camera 29 disposed above. let on the other hand,
The light irradiated from the reflection light source 27 is reflected from the falling granular material A, further reflected by the half mirror 28, and is incident on the line sensor camera 29 disposed above. In this case, the amount of light reflected from the non-defective powder by the reflection light source 27 and the amount of light transmitted from the transmission light source 26 are set to be equal.

Therefore, if all of the falling granules A are good, the images captured by the line sensor camera 29 have the same brightness, and the granules A are hardly visible. On the other hand, if defective powder or foreign matter is mixed into the powder or granule material A, the amount of reflected light from these objects will be different from that of the non-defective product, which means that the brightness will be different from that of the non-defective product. A dark spot or a bright spot will occur in the image No. 29. This dark spot or bright spot is detected by the image processing device 30, and if there is a dark spot or bright spot, the valve 22a of the removing device 22 is opened by the removing device control means 31, 32 to remove the defective powder or foreign matter. That's what I do.

In such an appearance inspection device, when the powder or granule material A generates fine dust, when the powder or granule material A passes through the powder or granule material falling path S, the transparent rotating cylinder 2
Dust adheres to the surfaces of 0 and 21. Such dust obstructs inspection and affects inspection accuracy, so it is necessary to remove it.

For this reason, as shown in FIG. 4, when the brush 33 is brought into contact with the outer circumferential surface of each transparent rotating cylinder 20, 21, the outer circumferential surface of the brush 33 is Either scrape off the dust that has adhered to the surface, or as shown in FIG. A method was proposed. Furthermore, as a combination of these methods, as shown in FIG. 6, a rotary brush 37 is accommodated in a groove-shaped box 36, and an air suction port 38 is provided at the bottom of the box 36. It was proposed (disclosed in the above-mentioned publication).

[Problem that the invention attempts to solve]

In the cleaning device shown in FIG. 4, the wiped fine powder particles accumulate in the flocked portion 33a of the brush 33, and if used for a long time, there is a risk that the outer circumferential surfaces of the transparent rotating cylinders 20, 21 may be contaminated.

The cleaning device shown in Fig. 5 can suction remove fine particles with relatively weak adhesion.
It was not possible to remove fine particles that were firmly attached by suction.

In the cleaning device shown in FIG. 6, when dust is scraped off by the rotating brush 37, the dust tends to enter deep into the bristle part of the rotating brush 37, and the dust accumulates without being suctioned and removed from the air suction port 38. If the bristles stand out at the tips of the flocked portions, there is a drawback that the outer circumferential surfaces of the transparent rotating cylinders 20 and 21 will be stained.

Therefore, an object of this invention is to provide a cleaning device that can reliably remove dust wiped from a transparent rotating cylinder.

[Means for solving problems]

The cleaning device of this invention includes: an annular wiping cloth that has a flocked part for cleaning on its surface and actively rotates; and a drive roller on which the wiping cloth is stretched and rotates.
a guide roller that maintains an appropriate tension when the wiping cloth rotates; an edge suction nozzle that is provided in contact with the flocked portion of the wiping cloth and scrapes out and sucks dust adhering to the flocked portion; and the wiping cloth. The wiping cloth includes an auxiliary nozzle that opens facing the surface of the cloth and suctions and removes dust adhering to the surface of the wiping cloth, and a box-shaped suction case that includes the edge suction nozzle and the auxiliary nozzle.

[Effect]

According to this invention, the dust wiped from the surface of the object to be cleaned with the wiping cloth is scraped and suctioned away by fluffing the flocked part of the wiping cloth with the edge suction nozzle, and the dust floating on the surface of the flocked part is also removed. Since the auxiliary nozzle suctions and removes the dust, it is possible to prevent the surface of the object to be cleaned from being contaminated by dust on the surface of the flocked portion, and it is possible to keep the surface of the object to be cleaned clean for a long time.

〔Example〕

An embodiment of this invention will be explained based on the drawings.
That is, this cleaning device is applied to an external appearance inspection device as shown in FIG. 3, and as shown in FIG. A wiping cloth 1, a driving roller 2 on which the wiping cloth 1 is stretched and rotated, a guide roller 3 that maintains an appropriate tension when the wiping cloth 1 rotates, and a flocked hair of the wiping cloth 1. Part 1a
an edge suction nozzle 4 that is provided in contact with and scrapes out and suctions dust adhering to the flocked portion 1a;
an auxiliary nozzle 5 that opens facing the surface of the wiping cloth 1 and sucks and removes dust adhering to the surface of the wiping cloth 1; and a box-shaped suction case 6 having the edge suction nozzle 4 and the auxiliary nozzle 5. It is equipped with the following.

The wiping cloth 1 is a transparent rotating cylinder 2 of the visual inspection device.
The tip of the flocked part 1a is in contact with transparent rotating cylinders 20, 21 (for convenience, in FIG. 1, it is in contact with one rotating cylinder 21). (only cleaning equipment shown).

The drive roller 2 is connected to a rotational drive source (not shown), and is configured to rotate in opposite directions at the transparent rotating cylinder 21 and its contact portion.

The guide roller 3 has a wiping cloth 1 and a transparent rotating cylinder 2.
The wiping cloth 1 is installed so as to be stretched with an appropriate pressure against the surfaces of the wiping cloth 1, and is rotated by the frictional force between the wiping cloth 1 and the wiping cloth 1.

The edge suction nozzle 4, as shown in FIG.
Since the opening is formed in the shape of a knife edge, even firmly adhered dust can be easily scraped out and removed by suction. At this time, the flocked portion 1a of the wiping cloth 1 is fluffed in a direction that promotes fluffing, and the dust adhesion ability is regenerated.

The auxiliary nozzle 5 is provided so as to open facing the surface of the wiping cloth 1, and sucks the dust floating on the surface of the flocked portion 1a.

The suction case 6 has an edge suction nozzle 4 and an auxiliary nozzle 5, and maintains a negative pressure inside the suction case 6 by suctioning air with a pump (not shown).

This cleaning device wipes off dust adhering to the surfaces of transparent rotating cylinders 20 and 21 with a wiping cloth 1 that comes into sliding contact with the transparent rotating cylinders 20 and 21. The edge suction nozzle 4 in contact with 1 scrapes out and suctions away. Further, the edge suction nozzle 4 fluffs the flocked portion 1a of the wiping cloth 1 to lift dust, and the auxiliary nozzle 5 sucks and removes this dust from the surface of the flocked portion 1a.

As described above, according to this embodiment, the wiping cloth 1 can be reliably cleaned and dust can be prevented from staying in the flocked portion 1a of the wiping cloth 1. As a result, the transparent rotating cylinder 20, 21 can be reliably cleaned. Therefore, the surfaces of the transparent rotating cylinders 20 and 21 can be kept clean for a long period of time, and accurate results can be expected when inspecting the powder or granular material A or the like.

Furthermore, since the cleaning device according to this embodiment is compact, it is suitable for use by being incorporated into devices such as visual inspection devices, and the cleaning device can be used in one-touch operation when disassembling and assembling inspection devices, etc. can be achieved.

Although this embodiment describes the case where it is applied to a visual inspection device for powder and granular materials, it can be similarly applied to cleaning the surface of objects to be cleaned in other devices (for example, packaging machines). It goes without saying that there is.

[Effect of idea]

According to this invention, the dust wiped from the surface of the object to be cleaned with the wiping cloth is scraped and suctioned away by fluffing the flocked part of the wiping cloth with the edge suction nozzle, and the dust floating on the surface of the flocked part is also removed. Since the auxiliary nozzle suctions and removes the dust, it is possible to prevent the surface of the object to be cleaned from being contaminated by dust on the surface of the flocked portion, and it is possible to keep the surface of the object to be cleaned clean for a long time.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of an embodiment of this invention, Fig. 2 is an enlarged sectional view of a suction case, Fig. 3 is an explanatory diagram of a normal appearance inspection device, and Figs. 4 to 6 are each a conventional cleaning method. FIG. 2 is an explanatory diagram of the device. 1... Wiping cloth, 2... Drive roller, 3... Guide roller, 4... Edge suction nozzle, 5... Auxiliary nozzle, 6... Suction case.

Claims (1)

[Scope of utility model registration request] An annular wiping cloth 1 having a flocked part 1a for cleaning on its surface and actively rotating, a drive roller 2 on which the wiping cloth 1 is stretched and rotatably driven, and the wiping cloth 1
a guide roller 3 that maintains an appropriate tension when rotating and traveling; an edge suction nozzle 4 that is provided in contact with the flocked part 1a of the wiping cloth 1 and scrapes out and sucks dust attached to the flocked part 1a; an auxiliary nozzle 5 that opens facing the surface of the wiping cloth 1 and sucks and removes dust adhering to the surface of the wiping cloth 1;
A cleaning device comprising a box-shaped suction case 6 having the edge suction nozzle 4 and the auxiliary nozzle 5.