JP2594142Y2 - Air cleaning device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air cleaning apparatus for removing foreign matter attached due to static electricity.

[0002]

2. Description of the Related Art For example, an oil seal (shaft sealing device) having a rubber lip is subjected to a function test assuming a use state before shipping a product. For this function inspection, for example, a dummy device similar to an actual mounting device is created, and an oil seal is mounted on a rotating shaft of the dummy device, and this is performed under predetermined environmental conditions in order to reproduce an actual use state. It is performed by rotating for a long time. Then, the shaft sealability and durability of the oil seal are inspected, whereby quality assurance in the market is performed. Such a functional inspection is performed not only for an oil seal but also for all products, but is particularly important for a functional component such as an oil seal.

[0003]

[Problems to be solved by the present invention] By the way, even if the result of the function inspection before shipping shows that there is no problem in the shaft sealing property and the durability,
If foreign matter adheres to the oil seal at the time of shipment, the foreign matter may be caught between the lip and the rotating shaft when mounted on the rotating shaft, and the removal of such foreign matter also guarantees the quality of the oil seal. Was an important issue for us. Conventionally, foreign matter adhering to the oil seal has been removed by applying air blow or the like in the final step of shipping the product.

However, the present inventors have found that some foreign substances adhered to the oil seal are adsorbed due to static electricity generated in the oil seal.
It turned out that this could not be completely removed by air blow. Also, conventionally, a method of removing foreign matter by static electricity removal is also known. However, when tracing a situation in which the static electricity causes the foreign matter to adhere to the oil seal, the oil seal shows that:
Depending on the manufacturing process, positive static electricity may be charged,
It was also found that negative static electricity was charged. Therefore, in the conventional static eliminator, only one of the static electricity can be neutralized, and the foreign matter cannot be completely removed.

In addition, since the conventional static eliminator blows ionized air from one direction, a circular product such as an oil seal cannot clean both the outer surface and the inner surface at once. . Further, the conventional static eliminator is generally large, and has a bottleneck due to a space problem when installed in a production line.

The present invention has been made in view of such problems of the prior art, and has as its object to provide an air cleaning apparatus capable of efficiently removing foreign substances adhered to a product due to static electricity. Aim.

[0007]

In order to achieve the above object, an air cleaning apparatus according to the present invention includes a main body having a cleaning chamber, a main shaft rotatably provided in the cleaning chamber, and an outer surface of the main shaft. The formed spiral groove, an air flow path formed inside the main spindle, a plurality of first air outlets extending from the air flow path to the outer surface of the main spindle, and provided in the cleaning chamber in the main spindle direction. A plurality of second air outlets for blowing air, a static eliminator provided between the main shaft and the second air outlet in the cleaning chamber for ionizing air, and an exhauster for sucking air in the cleaning chamber; It is characterized by having.

[0008]

First, an annular product such as an oil seal is inserted into the main shaft, and the main shaft is rotated. By the spiral groove formed on the outer surface of the main shaft, the plurality of annular products are aligned and separated from each other at the same time, so that air from a first air outlet and a second air outlet described later is blown to the entire product. . At about the same time, the static elimination means is activated, and compressed air is supplied to an air flow path formed inside the main shaft and discharged from the first air outlet. Also,
The compressed air is also discharged from the second air outlet.

At this time, foreign matter adhering to the inner surface of the product is removed by the air discharged from the first air outlet. The air discharged from the second air outlet is ionized when passing through the static elimination means, and the ionized air is blown onto the outer surface of the product inserted through the main shaft. As a result, foreign matter attached due to static electricity is neutralized by the ionized air and removed by the compressive force of the air. The foreign matter thus removed is
The gas is discharged to the outside of the main body by the exhaust means.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a longitudinal sectional view showing an air cleaning device according to an embodiment of the present invention, FIG. 2 is a plan view showing the air cleaning device according to the embodiment, and FIG. 3 is a side view showing the air cleaning device according to the embodiment. FIG. 4A is a front view showing a main shaft according to the embodiment, FIG. 4B is a side view thereof, and FIG. 5 is a half sectional view showing an oil seal which is an annular product applied to the present apparatus. .

The oil seal 10 shown in FIG. 5 is widely used as a shaft sealing device in the field of a fluid system, a driving device, or the like. However, if foreign matter adheres to the oil seal when the product is shipped, the oil seal is rotated. When mounted on a shaft, foreign matter may be trapped between the lip and the rotating shaft, and removal of such foreign matter is an important issue for quality assurance of an oil seal. Therefore, in the present embodiment, the present invention will be described with a specific example applied to the case where foreign matter attached to such an oil seal is removed.

The illustrated oil seal 10 has a reinforcing ring 11 buried by insert molding to enhance the strength of the oil seal body. The lip portion 12 is sharply formed by performing a scalpel cut to enhance the sealing property. In this type of oil seal 10, the lip 12
Thus, a resin ring material called a backup ring 13 is fitted in order to further ensure the sealing performance. The backup ring 13 is made of, for example, an annular material having an asymmetrical front and back, and by fitting a step portion of the backup ring 13 to the reinforcing ring 11 with respect to a semi-finished oil seal product after the insert molding of the reinforcing ring 11 is completed. Assembling is performed.

The air cleaning apparatus of this embodiment has a main body 2 in which a cleaning chamber 1 is formed. This main body 2 is shown in FIGS.
As shown in FIG. 3, a lid 14, which is made of a box-shaped container and forms the upper surface of the cleaning chamber 1, is attached via a hinge 15 so as to be openable and closable. The rotating ball grip 16 fixed to the lid 14 is gripped and rotated, whereby the lid 14 is opened and the oil seal 10 before cleaning is inserted into the main shaft 3 or the oil after cleaning is completed. The seal 10 can be removed from the main shaft 3.

A proximity switch 17 and a metal piece 1 for operating the proximity switch are provided between the lid 14 and the main body 2.
8 are provided so as to face each other, and when the cover 14 is closed, the proximity switch 17 operates to automatically start a spindle rotation motor 19, an air source (not shown), the static elimination means 8, and the like. It is configured. The main body 2 of the present invention
The shape is not limited to the shape shown in the figure, but can be changed as appropriate according to the shape and quantity of the product to be washed, the condition of the installation space, and the like. In addition, the opening / closing structure of the lid 14 is not limited to the present embodiment. For example, the oil seal 10 can be attached to and detached from the main shaft 3 even when only the surface to which the rotating ball grip 16 is fixed is opened and closed. . The main body 2 is attached to a base 20, and as shown in FIG. 3, an exhaust means 9 described later is provided on a side portion of the base 20.

A motor chamber 21 for rotating the main shaft 3 is provided in the vicinity of the washing chamber 1 described above. The main shaft 3 is shown in FIG.
As shown in FIG. 2, the support 22 is supported so as to face the cleaning chamber 1 and in a substantially horizontal state, and is rotatable with respect to the main body 2 by a bearing 22. A gear 23 is provided at the base of the main shaft 3.
Is attached, and the spindle rotation motor 1 shown in FIG.
The rotational motion of the main shaft rotating motor 19 is transmitted to the main shaft 3 by meshing with another gear 24 attached to the drive shaft 19 a of the ninth. It is preferable to use a motor that can rotate in both directions as the main shaft rotating motor 19. This is because the oil seals 10 are aligned in a state of being separated from each other by the action of a spiral groove 4 formed on the outer surface of the main shaft 3, which will be described later. This is because the oil seal 10 can be moved in the cleaning chamber 1 if the rotation direction is changed at a constant cycle. Thereby, the cleaning property is further improved.

As shown in FIGS. 4A and 4B, a spiral groove 4 is formed on the outer surface of the main shaft 3. The groove width and the spiral pitch of the spiral groove 4 are determined by the oil seal 10 to be cleaned.
It is configured according to the shape of. That is, the groove width is dimensioned so that the lip portion 12 of the oil seal 10 engages with the groove 4, while the spiral pitch has a predetermined dimension corresponding to the width W (see FIG. 5) of the oil seal 10. It is set to 1 / integer of the value added. As a result, when the lip portions 12 of the oil seals 10 are aligned while engaging with the spiral grooves 4, gaps of a predetermined size are formed between the oil seals 10, and the cleaning air passes through these gaps. At this time, foreign substances adhering to the side surface of the oil seal 10 can be removed.

Since it is preferable to select the shape of the spiral groove 4 according to the shape of the oil seal 10 as described above, when the air cleaning device of the present embodiment is used, the shape of the oil seal to be cleaned is required. When the shape changes, it can be said that it is preferable to replace the main shaft 3 accordingly.

An air passage 5 is formed inside the main shaft 3, and a plurality of first air outlets 6 extending from the air passage 5 to the outer surface of the main shaft 3 are formed in the main shaft 3. The base end of the air flow path 5 is connected to an air source (not shown) so that compressed air is supplied. As described above, the control of supply and stop of the compressed air is automatically performed by detecting the opening / closing operation of the lid 14 by the proximity sensor 17.

The first air outlets 6 are preferably formed with a short pitch as shown in FIG.
As shown in FIG. 4B, it is preferable to form the film in many directions. Thereby, the oil seal 10
This is because the cleaning air is blown over the front surface. The cleaning air discharged from the first air outlet 6 is mainly used for cleaning the inner surface of the oil seal 10.

On the other hand, the cover 14 is provided with a second air outlet 7 for discharging compressed air from an air source (not shown) into the cleaning chamber 1, and in the present embodiment, the second air outlet 7 is connected to the air source. It comprises one through-hole 7a and a perforated tube 7b. And since the porous tube 7b is provided over the entire cleaning chamber 1, the air blown out from this hole is
It is sprayed on the oil seal 10 supported on the main shaft 3. The configuration of the second air outlet 7 is not limited to the present embodiment. In short, the air discharged from the second air outlet 7 passes through a static bar 8 described later and reaches the oil seal 10. Good.

A static bar 8 is provided between the main shaft 3 provided in the cleaning chamber 1 and the second air outlet 7 described above.
In the present embodiment, as shown in FIGS. 1 and 3, it is fixed to the lid 14. The static bar 8 is connected to a power unit (not shown) via a cable 25 and is a static eliminator for decomposing molecules of air flowing down from the second air outlet 7 to generate positive and negative ions. The second discharging means 8
The air flowing down from the air outlet 7 is blown to the oil seal 10 as positive and negative ions.
Therefore, if the oil seal 10 is charged to positive static electricity, negative air ions
To neutralize the static electricity of the oil seal 10. Conversely, when the oil seal 10 is charged with negative static electricity, positive air ions are attracted to the oil seal, and in this case, the static electricity of the oil seal 10 is also neutralized.

An exhaust chamber 26 is provided on the side of the base 20 on which the air cleaning apparatus according to the present embodiment is mounted. The exhaust chamber 26 communicates with the cleaning chamber 1 via an exhaust pipe 27. ing. A bottleneck 28 exists between the cleaning chamber 1 and the exhaust pipe 27.
Is formed, and the air discharged from the first air outlet 6 and the second air outlet 7 is directly discharged to the exhaust pipe 27.
Prevents going to. Since the compressed air is supplied into the cleaning chamber 1 from the first air outlet 6 and the second air outlet 7, the air in the cleaning chamber flows through the exhaust pipe 27 to the exhaust chamber 26 as it is. In the example,
Further, the air in the cleaning chamber is forcibly sucked to prevent the foreign matter removed in the cleaning chamber 1 from adhering to the oil seal 10 again.

A suction pump or the like can be used as the suction means, but a suction means utilizing the Venturi effect may be used by connecting the exhaust pipe 27 to a high-pressure air pipe. “29” is a filter provided in the exhaust chamber.

Next, the operation will be described. First, a plurality of oil seals 10 are collectively inserted into the main shaft 3 with the lid 14 opened, and the lid 14 is closed. Here, when the main shaft 3 rotates, the oil seals 10 are automatically aligned, so that no special attention is required for inserting the oil seals 10. Lid 14
Is closed, the proximity sensor 17 operates and the main shaft 3 starts rotating. At the same time, a predetermined voltage is applied to the static bar 8, the static elimination means is activated, and the compressed air is supplied from the air source, so that both the first air outlet 6 and the second air outlet 7 are connected. Air is discharged from the outlet.

When the main shaft 2 rotates, a plurality of oil seals 10 are aligned and separated from each other by a spiral groove 4 formed on the outer surface of the main shaft, and a first air outlet 6 and a second air outlet 7 which will be described later. Is blown over the entire oil seal 10. Further, if the rotation direction of the drive shaft 19a of the main shaft rotation motor 19 is changed periodically, the plurality of oil seals 10 move to the distal end side of the main shaft 3 or move to the base end side every time the rotation direction changes. By moving, the supply of air to the oil seal 10 is promoted. In addition, since the intervals between the oil seals 10 increase during the movement, the oil seals 10
The blowing of air to the air is improved.

On the other hand, foreign matters adhering to the inner surface of the oil seal 10 are removed by the air discharged from the first air outlet 6. The air discharged from the second air outlet 7 becomes positive and negative ions when passing through the static bar 8, and this ionized air is blown to the outer surface of the oil seal 10 inserted through the main shaft 3. Can be As a result, foreign matter attached due to static electricity is neutralized by the ionized air and removed by the compressive force of the air. The foreign matter thus removed reaches the exhaust chamber 26 via the exhaust pipe 27, is collected by the filter 29, and is discharged.

The air cleaning apparatus according to the present invention can be variously modified without being limited to only the above-described embodiment.

[0028]

According to the air cleaning device of the present invention, when an annular product is inserted into a main shaft and the main shaft is rotated, a plurality of annular products are aligned with each other by a spiral groove formed on the outer surface of the main shaft, and at the same time, the products are aligned. As a result, the air from the first air outlet and the second air outlet is blown over the entire product. Therefore, the effect of removing foreign matter is promoted.

When the static elimination means is activated, compressed air is supplied to an air flow path formed inside the main shaft and discharged from the first air outlet, and compressed air is also discharged from the second air outlet. The foreign matter adhering to the inner surface of the product is removed by the air discharged from the first air outlet, while the air discharged from the second air outlet is ionized when passing through the static elimination means. The blown air is blown to the outer surface of the product inserted through the main shaft.

As a result, foreign matter attached due to static electricity is neutralized by the ionized air and removed by the compressive force of the air. The foreign matter thus removed is discharged to the outside of the main body by the exhaust means, and does not adhere to the product again.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view illustrating an air cleaning apparatus according to an embodiment of the present invention.

FIG. 2 is a plan view showing the air cleaning device according to the embodiment.

FIG. 3 is a side view showing the air cleaning device according to the embodiment.

FIG. 4 is a front view and a side view showing a spindle according to the embodiment.

FIG. 5 is a half sectional view showing an oil seal as an annular product.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Cleaning room 2 ... Main body 3 ... Main shaft 4 ... Spiral groove 5 ... Air flow path 6 ... 1st air outlet 7 ... 2nd air outlet 7a ... Through-hole 7b ... Perforated tube 8 ... Static bar (static elimination means) 9 ... exhaust means 10 ... oil seal 11 ... ring material 12 ... lip 13 ... backup ring 14 ... lid 15 ... hinge 16 ... rotating ball grip 17 ... proximity sensor 18 ... metal piece 19 ... spindle motor 19a ... drive shaft 20 ... Base 21 ... Motor chamber 22 ... Bearing 23,24 ... Gear 25 ... Cable 26 ... Exhaust chamber 27 ... Exhaust pipe 28 ... Bottle line 29 ... Filter

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H05F 1/00-3/06 B08B 6/00 H01T 23/00

Claims (1)

(57) [Scope of request for utility model registration] 1. A main body (2) having a cleaning chamber (1), a main shaft (3) rotatably provided in the cleaning chamber (1), and a spiral formed on an outer surface of the main shaft (3). A groove (4), an air flow path (5) formed inside the main shaft (3), and a plurality of first air outlets (from the air flow path (5) to the outer surface of the main shaft (3)). 6) and a plurality of second air blowers that are provided in the cleaning chamber (1) and blow air toward the main shaft (3).
An air outlet (7), a static eliminator (8) provided between the main shaft (3) and the second air outlet (7) in the cleaning chamber (1) to ionize air, and the cleaning chamber (1)
And an exhaust means (9) for sucking air in the air.