JP6704494B1 - Air nozzle - Google Patents

Abstract

[Objective] An air nozzle that cleans the surface of a manufactured product by blowing away residual liquid by cleaning or adhering chips, dust, oil stains, etc. to the manufactured product or the manufactured product by the pressure of air injection. [Structure] A fixed main body A1 having a cylindrical housing part 2 and a fixed base part 1 having a cylindrical penetrating part 11b formed therein, a rotary base part 3 having an air flow path 31s formed therein, and a rotary base part 3 A disk mounted on the rotary base 3 in which an injection pipe portion 4 having an inclination angle in the air injection direction with respect to the axis of the injection pipe portion and an injection hole portion 51 through which the tip of the injection pipe portion 4 is inserted are formed. A cylindrical housing part 2 having a rotating body A1 having a part 5, a rotating plate part 6 fixed to the rotating body A1 and being mounted on the rotating plate part 6 and being movable in and out from the outer end part of the rotating plate part 2. Rotation restricting body A3 having a rotation restricting portion 7 capable of contacting the inner peripheral side surface 21a. [Selection diagram]

Description

The present invention blows away the residual liquid by cleaning with a cleaning liquid or chips, dust, oil stains, etc. adhered to the manufactured product after completion of the manufacturing process or the manufactured product by the pressure of air (air) injection to clean the surface of the manufactured product. Air nozzle for cleaning.

In the manufacturing process of various products, it is necessary to remove the water remaining on the surface of the product after the cleaning after the cleaning with the cleaning liquid and to dry it at the final stage. The steps of removing water from the product and drying it are required to be short in order to improve the production efficiency of the product. In the drying step in the washing step of the product, the liquid remaining on the surface of the product is usually blown off and dried by high-pressure air injection.

Also, in the industry of manufacturing mechanical parts, etc., in the process of manufacturing mechanical parts, etc., use an air gun after cleaning the chips, dust or residual cutting oil or mold release agent etc. It is generally performed by blowing it off or by blowing it off with an air gun without cleaning with a cleaning liquid.

Here, as a product requiring a cleaning process with a cleaning liquid and a subsequent drying process, specifically, a resin molded product, a tray for storing food, clothes, machine parts, etc., an HDD case, and an HDD case There are trays, etc. for storing the, and other resin molded products, machined products, etc. In addition, as a specific example of the tray, there is a resin container for storing a lunch box sold at a convenience store, a supermarket, or the like. Further, as a tray, there is a container for protecting the semiconductor chip in the process of shipping the semiconductor chip, and such a tray may be washed with a hot water shower, and such a tray is the target of the drying work process. ..

Then, in the machine manufacturing industry, at the production site, the oil stains, cuttings, and debris of the above-mentioned product are cleaned by spraying a cleaning liquid, and then the water is blown away by air to perform such cleaning and drying. Is done frequently. In particular, there is an apparatus for blowing off the cleaning liquid of the product in the manufacturing process.

JP, 2018-187530, A

In the conventional cleaning device, for example, an air gun or the like exists. After cleaning with a cleaning liquid etc. to remove chips, dust or residual cutting oil etc. from products with uneven surfaces such as trays, the water remaining on most of the surface is dried by the air gun mentioned above. It was possible. However, it is difficult to almost completely drain the cleaning liquid remaining in the recesses on the uneven surface of the product.

Therefore, in order to almost completely drain the cleaning liquid, the product is set in a standing state, and the cleaning liquid is naturally dropped downward from the product so that the cleaning liquid flows out or is blown with air for a long time. Alternatively, various measures are taken such as raising the temperature of air. However, these operations are extremely inefficient, and the product cleaning process will take a significant amount of time.

Since such a cleaning and drying means requires a large number of workers and a large amount of related equipment such as a compressor, it is necessary to expand the equipment, which is large in automation and cost. It becomes a burden. Although the above-mentioned problems can be solved in the recent cleaning devices, the liquid and dust remaining on not only the surface of the product but also the recesses such as grooves and holes are scraped out positively and the drainage is easily completed. However, further development is required.

Further, like the rotary wave nozzle in Patent Document 1, the jetting portion rotates together with the rotating body by the rotational force that is the component of the jetting force due to the air jet from the nozzle, and the wavelike or A device that blows off water such as cleaning liquid by applying intermittent air jets has been developed. Then, in this type, as shown in the graph showing the relationship between the rotational speed of the rotating body and the drying quality in FIG. 11, the rotational speed (rotational speed) of the rotating body is excessively increased and a constant rotational speed is maintained. From the point of exceeding, the wave characteristic or the intermittent effect of the air jet may deteriorate, resulting in continuous air jet, and the phenomenon that the drying quality (which may be referred to as the drying work performance) deteriorates may occur.

Patent Document 1 presents the following problems with respect to the same type as the conventional one. To describe this problem, the rotary wave nozzle has a characteristic that the rotary shaft is rotatably supported by a bearing, and therefore it can be easily rotated even by low-pressure compressed air, so that the rotational speed easily increases. And, it is said that the drying quality is deteriorated at a high rotation speed. That is, if the number of rotations exceeds the optimum value between the number of rotations of the rotary wave nozzle and the drying quality, it becomes difficult to efficiently eject the droplets.

Until the rotation speed reaches the optimum value, the rotary wave nozzle sprays compressed air on the work in a wave-like manner (periodically and intermittently), and thus droplets can be efficiently blown off. Has been done. However, when the rotation speed exceeds the optimum value, the interval of the compressed air blown in a wave pattern gradually becomes shorter, and the compressed air eventually does not generate a wave. It is pointed out that this is equivalent to continuously injecting compressed air, so that the drying quality is deteriorated (see FIG. 13). Furthermore, it has been pointed out that when the rotational speed of the rotary wave nozzle is increased, the life of the bearing is shortened and noise is increased.

In Patent Document 1, a rotation speed suppressing means for suppressing such an excessive increase in the rotation speed (rotation speed) of the rotating body is provided. However, the rotation speed suppressing means in Patent Document 1 has an extremely complicated structure, and therefore there is a sufficient possibility that the manufacturing will be difficult and expensive.

Therefore, the object of the present invention (technical problem to be solved) is to actively scrape off the residual water not only on the surface of the part but also on the recesses, draining the adhered liquid or adhering oil and oil mixed with dust. To provide an air nozzle having an extremely simple structure for efficiently blowing out dirt and efficiently blowing out dust such as cutting chips, and further for suppressing an excessive increase in rotation speed. is there.

Therefore, as a result of intensive studies to solve the above problems, the inventor has found that the invention of claim 1 is connected to a cylindrical housing part having one axial end opened and the other axial end of the cylindrical housing part. And a fixed base portion having a fixed base portion having a cylindrical penetrating portion formed therein, a rotation base portion having an air flow path formed therein, and a rotation direction of the rotation base portion mounted on the rotation base portion. Attached to the rotary base along a line and formed with an injection pipe part configured to have an inclination angle in the air injection direction with respect to the axis of the rotation base part, and an injection hole part through which the tip of the injection pipe part is inserted. A rotary body that has a circular disc part that is rotatable in the fixed main body, a rotary plate part that is fixed to the rotary main body, and that is mounted on the rotary plate part and that is external to the rotary plate part. A rotation restricting member having a rotation restricting part that can freely move in and out from an end and can contact an inner peripheral side surface of the cylindrical housing part, and the rotation restricting part is rotatably supported by the rotation restricting member. The above-mentioned problem is solved by using an air nozzle having a cylindrical roller that is configured to contact with the inner peripheral side surface of the cylindrical housing portion by the centrifugal force generated by the rotation of the rotary body.

According to a second aspect of the invention, in the air nozzle according to the first aspect, the rotary plate portion of the rotation restricting body is formed as a flat main plate-shaped rotary main plate portion, and the rollers are provided at both ends in the longitudinal direction of the rotary main plate portion. The above-mentioned problems were solved by using the air nozzle configured to move in and out of the above. The invention of claim 3, in air nozzle according to claim 1 or 2, wherein the roller shaft support member for rotatably supporting is provided a shaft支長hole is formed in the rotating plate, the shaft support The above problem was solved by using an air nozzle in which the member is inserted so as to move along the shaft supporting elongated hole.

According to a fourth aspect of the present invention, in the air nozzle according to the first or second aspect, the rotation restricting portion has a swing piece that supports the roller, and the swing piece is swingable on the rotary plate portion. The problem has been solved by using an air nozzle that is pivotally connected.

The invention of claim 5 is the air nozzle according to any one of claims 1, 2, 3 or 4, wherein the roller is an air nozzle provided on both sides in the longitudinal direction of the rotary plate portion. The above problem was solved. A sixth aspect of the present invention is the air nozzle according to any one of the first, second, third, fourth, and fifth aspects, wherein the rotation base portion is provided with a void inside and is provided on an outer periphery of the rotation base portion. The above problem was solved by using an air nozzle that is provided with a container section that is continuous along the air nozzle.

According to the first aspect of the present invention, the rotary plate is fixed to the rotary body, and the rotary plate is mounted on the rotary plate so that the rotary plate can move in and out from the outer end of the rotary housing. A rotation restricting body having a rotation restricting portion made possible, wherein the rotation restricting portion of the rotation restricting body can be brought into contact with the inner peripheral side surface of the cylindrical housing portion by a centrifugal force generated by the rotation of the rotating body, The rotation restricting portion of the rotation restricting body is brought into contact with the inner peripheral side surface of the cylindrical housing portion by the centrifugal force generated by the rotation of the rotating body.

Then, as the number of rotations (rotational speed) of the rotating body excessively increases, the centrifugal force gradually increases, and the contact pressure of the rotation restricting portion on the inner peripheral side surface of the cylindrical housing portion also increases. Then, before the excessive rotation speed at which the drying capacity starts to decrease is reached, the contact pressure of the rotation restricting portion against the inner peripheral side surface of the cylindrical housing portion increases, and this becomes resistance to the rotation of the rotating body. To work. As a result, the rotating body can be prevented from having an excessive number of rotations that deteriorates the drying quality, and the rotating body can maintain an appropriate number of rotations (rotational speed).

Therefore, the air nozzle of the present invention can optimize the effect of blowing off the liquid (such as the cleaning liquid), dust, oil stains and the like attached to the product, and the drying quality can be extremely good. In the conventional drying air nozzle, the number of rotations (rotational speed) of the rotating body excessively increases, which may deteriorate the drying quality or the efficiency of the drying operation for the product by the air injection of the air nozzle. The air nozzle described above solves such inconvenience. Further, since the abutting member is a rotatable roller, the abutting member abuts against and applies pressure to the inner peripheral side surface of the cylindrical housing portion while the roller rotates, so that noise is unlikely to occur and the number of rotations is smooth. (Rotation speed) can be regulated.

In the invention of claim 2, the rotary plate portion of the rotation restricting body is formed as a strip-shaped plate, and the rotation restricting portion is configured to come in and out from both ends in the longitudinal direction of the strip-shaped plate. The weight can be reduced, and the configuration can be extremely simple. In the invention of claim 3, the rotation restricting portion includes an abutting member and a shaft member that supports the abutting member, a long hole is formed in the rotating plate portion, and the shaft member is the shaft supporting long hole. The structure inserted in the can make the structure simpler. In the invention of claim 4, the rotation restricting portion includes an abutting member and a swinging piece that axially supports the corresponding contacting member, and the swinging piece is swingably pivotally connected to the rotating plate portion. With this configuration, stable rotation regulation can be performed.

According to the fifth aspect of the present invention, the rotation restricting portion of the rotation restricting body is provided on both sides in the longitudinal direction of the rotating plate portion, so that the balanced rotation speed (rotation speed) can be restricted.

In the invention of claim 6, since the air nozzle of the upper air nozzle unit is provided with the container portion, in the case where the lubricant (oil) such as grease is used in parts such as bearings mounted in the air nozzle, Even if the lubricant (oil) leaks out, the lubricant (oil) is stored in the void in the container portion, and the drying operation can be performed while preventing the lubricant (oil) from leaking out of the air nozzle.

(A) is a vertical cross-sectional front view of the first embodiment of the present invention, and (B) is a partially cutaway plan view of the first embodiment of the present invention seen from the opening side. (A) is a perspective view of the rotary body as seen from the opening side in the first embodiment of the present invention, and (B) is a partially cutaway perspective view as seen from the rear side in the first embodiment of the present invention. (A) is an exploded vertical side view of the rotary body in the first embodiment of the present invention, and (B) is a plan view of the rotation restricting body in the first embodiment of the present invention. FIG. 3 is an exploded vertical side view of the fixed body according to the first embodiment of the present invention. (A) is a view of the air nozzle of the first embodiment in a stopped state or a normal rotation speed, in which the disc portion is removed when viewed from the opening side, and (B) is an excessive rotation speed of the air nozzle of the first embodiment. FIG. 6 is a view showing the state of FIG. 2 with the disc portion removed from the opening side. (A) is a vertical cross-sectional front view of the second embodiment of the present invention, (B) is a partially cutaway plan view of the first embodiment of the present invention seen from the opening side, and (C) is a second rotation restricting portion. It is a principal part sectional drawing of embodiment. (A) is a view of the air nozzle of the second embodiment in a stopped state or a normal rotation speed, in which the disk portion seen from the opening side is removed, and (B) is an excessive rotation speed of the air nozzle of the second embodiment. FIG. 6 is a view showing the state of FIG. 2 with the disc portion removed from the opening side. (A) is a plan view in which four air nozzles according to the present invention are mounted on a base, (B) is a cross-sectional view taken along the line X1-X1 of (A), and (C) is two air nozzles according to the present invention as a base. It is the mounted top view. (A) is a sectional view showing the flow of air (compressed air) and air injection of the air nozzle according to the present invention as seen from the opening side, and (B) is an enlarged view of (α) part of (A). (A) is a schematic vertical sectional side view in which the air nozzle of the present invention is applied to an air jet drying system. It is a graph which shows the rotation speed of an air nozzle, and the relationship of drying quality.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The air nozzle An of the present invention has, as a basic configuration, mainly a fixed main body A1, a rotary main body A2, and a rotation restricting body A3 (see FIGS. 1 and 6). The rotating body A2 is provided with an injection pipe portion 4, and the tip (tip injection port 41) of the injection pipe portion 4 is along the rotation direction of the rotation base portion 3 and is in air relative to the axis L of the rotation base portion 3. The configuration has an inclination angle θ in the injection direction. The inclination angle θ may be referred to as the injection angle θ.

The rotation restricting body A3 has an excessive increase in the number of rotations (rotational speed) of the rotating body A2 of the air nozzle An, which deteriorates the wave characteristic or the intermittent effect of the air injection, resulting in continuous air injection, resulting in dry quality (drying operation). In order to prevent the performance (which may be called performance) from deteriorating, the rotation speed (rotation speed) is regulated so as not to exceed a certain speed.

The air nozzle An having the above configuration has a plurality of embodiments depending on the configuration of the rotation restricting body A3. First, the configuration common to the embodiments of the air nozzle An will be described, and then the configuration of each embodiment will be described. The fixed main body A1 is a non-rotating structure, and the rotary main body A2 is attached to the fixed main body A1 in such a structure that the fixed main body A1 is rotatable (FIGS. 1 to 4). Etc.). In the present invention, the gas of the air ejected from the air nozzle An is mainly ordinary air, but various types of gas are also included. Further, in the following description, the word "air" may be referred to as gas.

The fixed body A1 mainly includes a fixed base portion 1 and a cylindrical housing portion 2 (see FIGS. 1 and 6). Here, in the present invention, the air nozzle An has an “opening side” and a “rear side” in the axial direction (see FIGS. 1, 6 and the like). Further, the opening side may be referred to as the front side. The axial direction refers to the line direction of the axis that is the center of rotation when the rotary body A2 rotates. The axis line serving as the center of rotation is referred to as the axis L of the rotary body A2. The axis L is also the axis of the air nozzle An as a whole, and thus the axis L is also applied to the rotation base portion 3 and the disk portion 5 that constitute the rotation body A2. The axis L is shown in the main figures.

The fixed main body A1, the rotary main body A2, and the rotation restricting body A3 forming the air nozzle An have their respective axes aligned with the axis L when the rotary main body A2 and the rotation restricting body A3 are incorporated in the fixed main body A1. This is the state, and the positions of the opening side (front side) and the rear side are determined. The axis L is also applied to the axis of the fixed body A1. That is, in the state where the rotary body A2 is mounted on the fixed body A1, the center of each is aligned or substantially aligned with the axis L (see FIG. 1).

The fixed base portion 1 has a fixed cylindrical portion 11 and a connecting fixed flange portion 12 (see FIGS. 1 and 2A). The fixed cylindrical portion 11 is configured in a substantially hollow cylindrical shape (see FIGS. 1 to 3), and the cylindrical rotary plate portion 3 of the rotary body A2 described later becomes rotatable about the axis L as the axis of rotation. To be installed. As described above, the fixed cylindrical portion 11 has a substantially hollow cylindrical shape, and has the cylindrical penetrating portion 11b that is open on both axial sides along the axis L of the cylindrical shape. On the peripheral edge of the opening at the rear end of the fixed cylindrical portion 11, screw holes 11c having internal threads are formed at equal intervals along the peripheral edge.

The connecting fixed flange portion 12 serves as a lid for accommodating and arranging the bearing 34 and the spacer 35 mounted between the fixed cylindrical portion 11 and the rotary body A2, and the air nozzle base 81 described later has an air nozzle. It serves as a connecting member for mounting An (see FIGS. 1 and 6). The connecting fixed flange portion 12 is fixed to one end of the fixed cylindrical portion 11 in the axial direction by a plurality of fixing members 13 such as screws. The connecting fixed flange portion 12 is formed in an annular disc shape and is larger than the outer diameter dimension of the fixed cylindrical portion 11. A fixed through hole 12a, a connection hole 12b, and a connection hole 12c are formed in the connection fixed flange portion 12. The fixed cylindrical portion 11 and the connecting fixed flange portion 12 are connected by a fastener 13, a connecting hole 12b and a screw hole 11c.

The cylindrical housing portion 2 has a diameter larger than that of the fixed cylindrical portion 11 of the fixed base portion 1 and has a cylindrical container shape (see FIGS. 1 and 4). The cylindrical housing part 2 has a cylindrical side wall plate part 21 and a closing plate part 22, and an opening 2a is formed on one end side in the axial direction and on the opposite side to the closing plate part 22. Then, as described above, the opening side of the cylindrical housing portion 2 of the fixed main body A1 is the opening side (front side), and the opposite side in the axial direction along the axis L is the rear side (FIGS. Refer to 3).

A through hole 22a into which one axial end of the fixed cylindrical portion 11 of the fixed base portion 1 is inserted is formed on the closing plate portion 22 side of the cylindrical housing portion 2, and the fixed cylindrical portion 11 and the closing plate of the cylindrical housing portion 2 are formed. The portion 22 is fixed by a fixing means such as welding. At this time, a part of the fixed cylindrical portion 11 on the one end side in the axial direction is in a state of being embedded in the closing plate portion 22 of the cylindrical housing portion 2 (see FIGS. 1 and 2A). That is, a part of one end of the fixed cylindrical portion 11 in the axial direction enters the cylindrical housing portion 2.

Therefore, the outer peripheral side surface of the fixed cylindrical portion 11 near the opening side (front side) in the axial direction is a small-diameter portion having a small diameter, and there is a step portion 11a which is a step. The step portion 11 a serves as a stopper and an alignment for inserting and connecting the small diameter portion of the fixed cylindrical portion 11 into the through hole 22 a of the closing plate portion 22 of the cylindrical housing portion 2.

Next, the rotating body A2 has a rotating base portion 3, an injection pipe portion 4, and a disc portion 5 [see FIGS. 1(A) and 6(A), etc.]. The rotation base portion 3 is composed of a rotation cylinder portion 31 and a rotation flange portion 32 [see FIG. 3(A)]. The rotating cylindrical portion 31 is formed in a cylindrical cup shape and includes a cylindrical side surface portion 31a and a tip end surface portion 31b. The cylindrical side surface portion 31a constitutes the outer periphery of the rotating cylindrical portion 31, and the tip end surface portion 31b is a portion that closes the axial opening side (front side) of the rotating cylindrical portion 31. An air flow passage 31 s is formed inside the rotating cylindrical portion 31 as a cylindrical void.

An air inlet 31d that is open is provided on the rear side of the rotating cylindrical portion 31. An air discharge portion 31c, which is a through hole penetrating between the inside and the outside, is formed at or near the tip surface portion 31b of the rotary cylindrical portion 31. The air discharge portion 31c is a portion into which a root portion 4j of the injection pipe portion 4 described later is inserted and which communicates the inside of the injection pipe portion 4 with the air flow passage 31s. A rotary flange portion 32 is fixed to a rear side in the axial direction of the rotary cylindrical portion 31 by a fastener 33 such as a screw [see FIGS. 1 and 3(A)]. The rotary flange portion 32 is rotatably locked to the connecting fixed flange portion 12 of the fixed main body A1 when mounted on the fixed main body A1 so that the rotary main body A2 can rotate in a stable state. Make up.

The rotary flange portion 32 has an annular disc shape, an air inlet hole 32a is formed therein, and a connection hole 32b is formed in the peripheral edge of the air inlet hole 32a. A screw hole 31e is formed on the axially rear end surface of the rotary cylindrical portion 31, and the rotary flange portion 32 is fixed to the rotary cylindrical portion 31 by a connection hole 32b, a screw hole 31e, and a fastener 33 (FIG. 1, FIG. (See FIG. 3). The outer peripheral edge of the rotary flange portion 32 is rotatably engaged with the inner peripheral edge of the fixing through hole 12a of the connecting fixed flange portion 12 of the fixed main body A1 (see FIG. 1).

One or more injection pipe parts 4 are attached to the rotating cylindrical part 31 (see FIGS. 1 and 6). In the description of the present invention, the injection pipe portion 4 will be described as 2. The injection pipe portion 4 is a pipe member that circulates air to generate an air jet for cleaning and an air jet for propulsion that serves as a rotational force for rotating the rotating body A2. The root portion 4j, which is one end of the injection pipe portion 4, is arranged or inserted into the air discharge portion 31c of the rotary cylindrical portion 31 (see FIG. 9). The vicinity of the tip end ejection port 41 of the injection pipe portion 4 is opposite to the direction in which the rotating body A2 rotates in the set rotation direction, and the rotation base portion 3 extends along the rotation direction of the rotation base portion 3. Moreover, it has a configuration having an inclination angle θ with respect to the axis L.

The rotating direction of the rotating body A2 is set to either clockwise or counterclockwise as viewed from the opening side (front side) of the air nozzle An. When the ejection force of the air ejected from the tip ejection port 41 is F, the direction of this F is inclined by an angle θ with respect to the axis L of the air nozzle An [see FIG. 4(C)]. .. Therefore, the dry spray force for drying (cleaning) is Fcos θ. Further, the rotational propulsive force for rotating the rotary body A2 is Fsin θ (see FIG. 1(A)).

As described above, the rotating body A2 of the air nozzle An is rotated by the rotational propulsion force Fsinθ for rotation, which is a component force generated from the ejection force F of the air (air) ejected from the tip ejection port 41 of the ejection pipe portion 4. The body A2 can be rotated. The inclination angle θ has a minimum angle range of about 10 degrees and a maximum angle range of about 30 degrees. The range of the minimum angle to the maximum angle is preferably about 15 degrees to about 20 degrees, and preferably about 15 degrees.

The injection pipe portion 4 includes a linear portion 4a, a bent portion 4b, and a root portion 4j. A continuous portion of the linear portion 4a and the bent portion 4b is formed so as to be gently continuous. The tip end of the bent portion 4b is located at the tip ejection port 41, and the tip of the straight portion 4a is attached. The root 4j is located. The root portion 4j is arranged or inserted in the air discharge portion 31c, and the inclination angle of the tip ejection port 41 in the injection direction is set by the inclination angle of the bent portion 4b with respect to the axis L.

The disc portion 5 allows the blast air from the tip jet port 41 of the jet pipe portion 4 to pass therethrough. Then, the disc portion 5 is connected to the tip end surface portion 31b of the rotating cylindrical portion 31 of the rotation base portion 3 such that the centers of rotation of the disc portion 5 and the rotation base portion 3 coincide or substantially coincide with each other. At this time, a cylindrical collar portion 53 is provided between the tip end surface portion 31b and the disc portion 5 so as to provide a predetermined space, and the tip end surface portion 31b, the disc portion 5, and the collar portion 53 are screwed. It is fixed by a fixing tool 54 such as.

An attachment through hole 5n is formed at the diameter center position of the disc portion 5, and a screw portion of a fastener 54 such as a screw penetrates through the attachment through hole 5n, and a fastener 54 is attached to the screw hole of the collar portion 53. Are screwed together. In the rotating body A2, the disc portion 5 and the injection pipe portion 4 perform a rotating operation with the rotation base portion 3 as a rotation axis along the axis L. Further, the collar portion 53 may be integrally formed with the tip end surface portion 31b of the rotating cylindrical portion 31 of the rotating base portion 3 [see FIG. 8(A)].

The disc portion 5 is set so as to be located axially rearward of the opening peripheral edge of the opening 2a of the cylindrical housing portion 2 of the fixed main body A1. The disc portion 5 has a structure that is located inward of the opening 2a of the cylindrical housing portion 2, that is, on the rear side of the cylindrical housing portion 2. Then, the opening 2a of the cylindrical housing portion 2 and the disc portion 5 form a substantially flat cylindrical void chamber S having a depth dimension H from the opening 2a on the opening side of the cylindrical housing portion 2 ( (See Figure 1).

The depth dimension H is an amount that sets the volume of the void chamber S, and the volume can be set as appropriate by appropriately adjusting the depth dimension H. Specifically, the depth dimension H of the void chamber S is a small amount compared to the entire height of the cylindrical housing portion 2. Further, the outer peripheral edge 5 a of the disc portion 5 is installed in a non-contact state with the inner peripheral side of the cylindrical side wall plate portion 21 of the cylindrical housing portion 2.

An injection hole portion 51 is formed in the disc portion 5 at a position closer to the outer peripheral edge side. The injection hole portions 51 are formed in the disk portion 5 in the same number as the injection pipe portions 4. The tip end ejection port 41 of the ejection pipe portion 4 is located in the ejection hole portion 51. Specifically, the tip injection port 41 of the injection pipe portion 4 penetrates the injection hole portion 51. The penetrating state may be such that the tip ejection port 41 penetrates the ejection hole portion 51 by a slight amount.

Further, the tip end ejection port 41 of the injection pipe portion 4 is configured not to exceed the opening portion 2a of the cylindrical housing portion 2 (see FIG. 1). That is, the tip end ejection port 41 of the injection pipe portion 4 is located inward and does not project outward, without exceeding the opening 2a of the cylindrical housing portion 2. The injection hole portion 51 is an elliptical through hole, is formed slightly larger than the portion of the tip injection port 41 penetrating the injection hole portion 51, or, although not shown, the outer peripheral edge of the disc portion 5. It may be a substantially U-shaped notch having a portion opened at.

Assembly of the fixed main body A1 and the rotary main body A2 in the air nozzle An in the present invention will be described. The air nozzle An is equipped with two bearings 34. First, the first bearing 34 is inserted into the fixed main body A1 from the opening on the rear side in the axial direction of the fixed base portion 1, the spacer 35 is then inserted, and then the second bearing 34 is inserted.

Next, the rotation base portion 3 of the rotation body A2 is inserted on the inner peripheral side of the first and second bearings 34. The spacer 35 is composed of two cylindrical rings, one of which is mounted along the inner peripheral side of the cylindrical penetrating portion 11b of the fixed cylindrical portion 11 of the fixed main body A1 and the other of which is rotatable. It is mounted along the cylindrical side surface portion 31a of the cylindrical rotary plate portion 3 of the main body A2 (see FIG. 1).

Then, the connecting fixed flange portion 12 is fixed to the rear end portion of the fixed base portion 1 of the fixed main body A1 by a fastener 13 such as a screw, and the first and second bearings 34 and the spacer 35 are fixed to the fixed main body A1. It is fixed between the base portion 1 and the rotary base portion 3 of the rotary body A2. Further, the rotary flange portion 32 is fixed to the fixed through hole 12a of the connecting fixed flange portion 12 and to the rear side end of the rotary cylindrical portion 31 of the rotary body A2 by a fastener 33 such as a screw. As a result, the rotary body A2 is rotatably attached to the fixed body A1, and the rotary body A2 rotates about the axis L of the rotation center line (see FIGS. 1 and 3).

There is an embodiment in which the rotary body A2 is provided with a flat cylindrical container portion 36 in which a void portion 36b is provided (see FIGS. 1 and 3). The container portion 36 is formed in a substantially donut shape or a floating ring shape, and has a hollow space portion 36b inside. The container portion 36 is fixed to the rotation base portion 3 of the rotating body A2 and is installed at a position near the closing plate portion 22 side of the cylindrical housing portion 2 of the stationary body A1.

The container part 36 rotates together with the rotating body A2. An annular insertion through-hole 36a is formed in a surface of the container portion 36 which is close to the closing plate portion 22 side of the cylindrical housing portion 2, and the fixed cylindrical portion 11 of the fixed main body A1 is inserted into the insertion through-hole 36a. The distal end portion on the axial opening side is inserted (see FIGS. 1 and 3). A gap is formed between the inner peripheral edge of the insertion through hole 36a of the container portion 36 and the outer periphery of the fixed cylindrical portion 11 of the fixed base portion 1, and they are not in contact with each other. A bearing 34 provided between the fixed main body A1 and the rotary main body A2 is arranged at the tip end portion of the fixed cylindrical portion 11 on the opening side in the axial direction.

That is, the circumference of the position where the bearing 34 mounted between the fixed main body A1 and the rotary main body A2 is located is surrounded by the container portion 36 and the annular void portion 36b is present (FIG. 1). , See FIG. 3). Then, grease or lubricating oil or the like of the bearing 34 leaks out, and the oil component dripping from between the fixed body A1 and the rotating body A2 can be collected in the space 6b of the container portion 36 (FIG. 9( B)]. That is, the container portion 36 is a reservoir container for the leaked grease or lubricating oil. As a result, it is possible to prevent oil stains from diffusing into the cylindrical housing portion 2, and it is possible to prevent the product 9 from being soiled during the drying operation of the product 9. The container 36 may not be attached to the air nozzle An.

Next, in the air nozzle used for general drying work, the rotating plate portion provided with the air injection pipe is supported by bearings and has a smooth rotation performance. The number of rotations (rotational speed) easily increases. In particular, there is a problem that the drying quality or the drying efficiency is deteriorated in a high rotation speed region where the rotation speed (rotation speed) excessively increases. That is, between the rotation speed of the rotary plate portion of the air nozzle An and the drying quality, the drying efficiency or the drying quality is improved until the rotation speed (rotation speed) reaches the optimum value. If the number of rotations at the rotation speed exceeds the optimum value and continues to rise, it becomes difficult to efficiently blow off the droplets (see FIG. 11).

That is, until the rotation speed reaches the optimum value, the compressed air can be waved (periodically or intermittently) blown onto the work, and the droplets can be efficiently blown off. However, when the rotation speed (rotation speed) excessively rises and the rotation speed exceeds the optimum value, the interval of the compressed air blown in a wave pattern gradually becomes shorter, and the compressed air eventually does not generate a wave. This is equivalent to continuously injecting compressed air, so that the drying quality and the drying work efficiency are deteriorated. Further, when the rotational speed of the rotary wave nozzle is increased, the life of the bearing is shortened and noise is increased.

The rotation regulating body A3 serves to regulate the rotation speed (rotation speed) of the rotation body A2 so that the rotation speed (rotation speed) of the rotation body A2 of the air nozzle An according to the present invention does not exceed a certain speed. is there. Although there are a plurality of embodiments of the rotation restricting body A3, the common basic structure of the rotation restricting body A3 is one including the rotating plate portion 6 and the rotation restricting portion 7. The rotary plate portion 6 is fixed to the rotary body A2 and rotates together with the rotary body A2. The rotation restricting portion 7 is attached to the rotating plate portion 6 and is movable in and out from the outer end portion of the rotating plate portion 6 to press the inner peripheral side surface 21a of the cylindrical side wall plate portion 21 of the cylindrical housing portion 2. This is made possible [see FIG. 1(B) and FIG. 6(B)].

A first embodiment of the rotation restricting body A3 will be described with reference to FIGS. The rotary plate portion 6 is a rotary main plate portion 61 formed in a flat plate shape that is a relatively thin plate and has a substantially rectangular shape (see FIGS. 1, 2, 3B, etc.). A through hole 61a for mounting is formed at an intermediate position in the longitudinal direction of the rotary main plate portion 61 near both ends in the longitudinal direction of the rotary main plate portion 61 [see FIG. 3(B)]. Further, shaft supporting elongated holes 61b are formed in the vicinity of both longitudinal end portions of the rotating main plate portion 61 along the longitudinal direction of the rotating main plate portion 61 [see FIGS. 2(B) and 3(B)]. ].

The rotation restricting portion 7 includes a contact member 71 and a shaft support member 72 that supports the contact member, and the shaft support member 72 is attached to the contact member 71. A support hole 71 a is formed in the contact member 71. The shaft support member 72 is inserted into the shaft support long hole 61b and the support hole 71a of the contact member 71 so that the shaft support member 72 can move along the longitudinal direction of the shaft support long hole 61b. There is. Then, the contact member 71 together with the shaft support member 72 can move along the longitudinal direction of the shaft support long hole 61b [see FIG. 3(B)]. The rotating main plate portion 61 is provided with two contact members 71, 71. As the shaft support member 72, specifically, a screw shaft 72a such as a screw may be used, and a nut 72b and a washer 72c may be used [see FIG. 3(A)].

The rotation restricting body A3 is fixed to the rotation base portion 3 of the rotating body A2, and is housed inside the cylindrical housing portion 2 of the stationary body A1 and inside the cylindrical housing portion 2 rather than the disc portion 5 ( (See FIG. 1). Specifically, the rotation main plate portion 61 of the rotation restricting body A3 is fixed to the rotation body A2 via the collar portion 53 on the tip end surface portion 31b of the rotation base portion 3. Further, specifically, the collar portion 53 has a two-member configuration along the axial direction, and the rotation main plate portion 61 of the rotation restricting body A3 is arranged so as to be sandwiched between the two-member collar portions 53. The fixing portion 54 such as a screw is inserted through the collar portion 53 formed of these two members, the mounting through hole 61a of the rotary main plate portion 61, and the mounting through hole 5n of the disc portion 5, so that the rotation base portion 3 It is fixed to the tip surface portion 31b [see FIG. 1(A), FIG. 3 and the like].

The contact member 71 of the rotation restricting portion 7 is a cylindrical roller 711, a support hole 71a is formed at the center in the diametrical direction, the screw shaft 72a of the shaft support member 72 is inserted into the support hole 71a, and the roller 711 is It is rotatably attached to the rotary plate portion 6 such as the rotary main plate portion 61. The roller 711 is preferably made of synthetic resin or hard or soft rubber. As described above, the shaft support member 72 uses the screw shaft 72a, the nut 72b, and the washer 72c, and the shaft support member 72 moves along the shaft support long hole 61b, and at the same time, the roller 711 and the shaft support long hole 61b. Move along the longitudinal direction of.

In the rotation restricting body A3, when the air nozzle An is in operation, the rotating plate portion 6 (rotating main plate portion 61) rotates together with the rotating body A2 inside the cylindrical housing portion 2 of the fixed body A1. The rotation restricting portion 7 does not move outward with respect to the rotating plate portion 6 (rotating main plate portion 61) when the rotating body A2 is stopped or when the number of rotations (rotational speed) is normal or small [Fig. 5 (A)].

When the number of rotations (rotational speed) of the rotating body A2 exceeds the appropriate number of rotations and becomes an excessive number of rotations (rotational speed), centrifugal force is applied to both sides of the rotating plate portion 6 (rotating main plate portion 61) in the longitudinal direction. The rotation restricting portion 7 moves so as to project further outward from both longitudinal ends of the rotating plate portion 6 (rotary main plate portion 61). The rotation restricting portion 7 is in contact with the inner peripheral side surface 21a of the cylindrical side wall plate portion 21 of the cylindrical housing portion 2 so that the inner peripheral side surface 21a can be pressed.

Then, due to the increase of the centrifugal force, the pressure of the rotation restricting portion 7 in the contact state with the inner peripheral side surface 21a of the cylindrical housing portion 2 increases. The resistance to rotation of the rotary body A2 is increased due to an increase in the contact pressure of the rotation restricting portion 7 against the inner peripheral side surface 21a of the cylindrical housing portion 2 before the excessive rotation speed at which the drying capacity starts to decrease is reached. And acts [see FIG. 5(B)]. As a result, the rotating body A2 is controlled so as not to have an excessive number of rotations that deteriorates the drying quality, the rotating body A2 maintains an appropriate number of rotations (rotation speed), and the drying quality can be improved.

When the rotation restricting portion 7 is the roller 711, the roller 711 rotatably contacts the inner peripheral side surface 21 a of the cylindrical housing portion 2. When the number of rotations (rotational speed) of the rotating body A2 exceeds a certain speed, the roller 711 that is in contact with the inner peripheral side surface 21a of the cylindrical housing portion 2 is rotated and the centrifugal force is increased to increase the roller. At 711, the force for pressing the inner peripheral side surface 21a of the cylindrical housing portion 2 increases.

In this way, the roller 711 of the rotation restricting body A3 abuts and applies pressure to the inner peripheral side surface 21a of the cylindrical housing portion 2 while rotating, so that noise is less likely to occur and the rotation speed of the rotating body A2 ( The rotation speed can be regulated. The resistance force of the rotation restricting portion 7 (roller 711) also increases, and the speed of the rotating body A2 is restricted so that the rotating body A2 does not reach a certain number of rotations (rotation speed).

Next, a second embodiment of the rotation restricting body A3 will be described with reference to FIGS. In the second embodiment, the rotation restricting portion 7 has a contact member 71 and a swing piece 73. The swing piece 73 rotatably supports the contact member 71. The swing piece 73 is swingably and pivotally connected to the rotary plate portion 6. This pivotally connected portion is referred to as a pivotal portion 7p. As the rotary plate portion 6, a rotary flat plate portion 61 having a substantially flat plate shape is used as in the first embodiment. Specifically, the pivotal support holes 61c are formed in the vicinity of both longitudinal end portions of the rotary main plate portion 61. The oscillating piece 73 is a flat strip plate that is formed shorter than the length of the rotary main plate portion 61 in the longitudinal direction.

A pivot hole 73a is formed at one end of the swing piece 73 in the longitudinal direction. The pivotal support hole 61c of the rotary main plate 61 and the pivotal support hole 73a of the swing piece 73 are connected by the pivot support member 74. As the pivot member 74, a screw shaft 74a such as a screw is used, and a nut 74b and a washer 74c may be used. In this way, the swing piece 72 and the rotary main plate portion 61 are pivotally connected to each other to form the pivotal support portion 7p (see FIGS. 6 and 7). A contact member 71 of the rotation restricting portion 7 is provided at the other end of the swinging piece 72 in the longitudinal direction.

In the second embodiment of the rotation restricting body A3, the configuration of the contact member 71 of the rotation restricting portion 7 is substantially the same as that of the first embodiment, and a cylindrical roller 711 is formed, and a support hole 71a is formed at the center in the diameter direction. The screw shaft 72a of the shaft support member 72 is inserted through the support hole 71a, and the roller 711 is rotatably attached to the rotary plate portion 6 such as the rotary main plate portion 61. As described above, the material of the roller 711 is preferably synthetic resin or hard or soft rubber, and the shaft support member 72 uses the screw shaft 72a, the nut 72b, and the washer 72c as described above.

In the second embodiment of the rotation restricting body A3, the abutting member 71 causes the contact member 71 to rotate with respect to the rotary plate portion 6 (rotary main plate portion 61) by the swing piece 72 swinging around the pivot portion 7p. It is configured to enter and leave 61. The rotation restricting body A3 of the second embodiment is fixed to the rotation base portion 3 of the rotating main body A2, as in the rotation restricting body A3 of the first embodiment, inside the cylindrical housing portion 2 of the fixed main body A1 and It is configured to be housed inside the cylindrical housing portion 2 rather than the disc portion 5.

In the rotation restricting body A3 in the second embodiment, when the air nozzle An is in operation, the rotating plate portion 6 (rotating main plate portion 61) rotates together with the rotating body A2, and the rotating main plate portion 61 is pivotally supported by the pivot portions 7p on both sides in the longitudinal direction. The swinging pieces 73, which are connected to each other, are moved by the centrifugal force generated when the rotating body A2 is rotated, so as to swing outwardly from both side ends of the main rotating plate portion 61 and project outward. Is brought into contact with the inner peripheral side surface 21a of the cylindrical side wall plate portion 21 of the cylindrical housing portion 2 so that the inner peripheral side surface 21a can be pressed.

Then, the rotation restricting portion 7 which is the roller 711 is rotatably abutted on the inner peripheral side surface 21a of the cylindrical housing portion 2, and the abutting roller 711 is rotated while the rotation speed (rotation speed) of the rotating body A2 is constant. Before attempting to reach an excessive number of rotations (rotational speed) by exceeding the speed of, the force by which the rotation restricting portion 7 that is the roller 711 presses the inner peripheral side surface 21a of the cylindrical housing portion 2 due to an increase in centrifugal force. The speed of the rotating body A2 is regulated so that the rotating body A2 does not increase in rotation speed (rotation speed) above a certain level (see FIG. 7).

In addition to the embodiment in which the abutting member 71 is the roller 711, the abutting member 71 does not rotate but simply abuts against the inner peripheral side surface 21a of the cylindrical housing portion 2 and the abutting member 71 increases the rotational speed (rotational speed). It may be a non-rotating member that serves as resistance. In this embodiment, the contact surface with the inner peripheral side surface 21a of the cylindrical housing portion 2 is preferably made of a material that can relatively smoothly contact each other.

In addition to the embodiment in which the rotary plate portion 6 is a substantially rectangular flat strip plate like the rotary main plate portion 61, although not shown, it may have a triangular plate shape, a rectangular shape, a polygonal shape, or a simple circular shape. It may have a plate shape. In the case where the rotary plate portion 6 has a triangular shape, the rotation regulating portions 7 (rollers 711 and the like) can be provided at all three corner portions. Further, when the rotary plate portion 6 has a rectangular plate shape, the rotation restricting portions 7 (rollers 711 and the like) can be provided at all four corner portions.

Further, the rotation restricting portion 7 may be configured such that one rotation restricting portion 7 (roller 711 or the like) is provided near one end of the rotation restricting portion 7 in the vicinity of both ends in the longitudinal direction or the diameter direction. Further, the rotation restricting body A3 is configured to include only the rotation restricting portion 7, the disk portion 5 also serves as the rotating plate portion 6, and the disk portion 5 is provided with a plurality of or one support hole 71a, and a plurality of or One rotation restricting portion 7 may be provided, or a plurality of or one rocking piece 72 may be provided near the outer periphery of the disk portion 5 to serve as the rotation restricting portion 7.

In the present invention, since the number of rotations (rotational speed) of the rotating body A2 in the air nozzle An is excessively increased, as described above, the efficiency of the drying operation for the product 9 by the air injection of the air nozzle An is deteriorated and the drying is performed. It is possible to prevent a situation in which the work is not successful, and it is possible to prevent the bearing and other members from being burdened by the excessive increase in the rotation speed (rotation speed) of the rotating body A2.

That is, there are proper numerical values for the rotation speed (rotation speed) and the rotation speed of the rotating body A2. Further, depending on the shape and size of the product 9, it is preferable to adjust the number of rotations (rotation speed) of the rotating body A2 to an optimum state. The rotation restricting body A3 increases the rotation speed (rotation speed) of the rotation body A2, and when the rotation speed exceeds a predetermined rotation speed (rotation speed) at which the drying efficiency deteriorates, the rotation restricting portion 7 increases due to an increase in centrifugal force. Increases the force pressing the inner peripheral side surface 21a of the cylindrical housing portion 2, restricts (suppresses) an excessive increase in the rotation speed (rotation speed) of the rotating body A2, and maintains the optimum rotation speed (rotation speed). I am able to do so. The air jet from the tip jet outlet 41 of the jet pipe portion 4 can be waved (periodically or intermittently) and blown onto the product 9, and the droplets can be blown off efficiently. The liquid (such as cleaning liquid) attached to the product 9 and dust, oil stains, and the like can be blown off, and the effect of the drying operation can be optimized.

The air nozzle An in the present invention is connected to the air nozzle base 81 and is used as an air nozzle unit (see FIG. 11). Specifically, a plurality of air nozzles An are attached to the air nozzle base 81 and used. Further, the air nozzle unit is assembled to the frame body 82 of the air jet drying system (see FIG. 12). The frame 82 of the air jet drying system is provided with a blower 822. The air blower 822 is for producing compressed air from an electric compressor or the like, and the compressed air is supplied from the air blower 822 to the air nozzle An attached to the air nozzle base 81 via the air nozzle base 81 (FIG. 12). reference).

The air nozzle base 81 has a base body 811, an air inlet 812, an air supply port 813, an air chamber 814, and a mounting portion 815 (see FIG. 11). The base body 811 is formed in a substantially housing shape, and has an air chamber 814 in which compressed air flows, inside. An air nozzle unit including a plurality of air nozzles An and an air nozzle base 81 is attached to a predetermined position of a frame body 82 of the air jet drying system via a mounting portion 815 of the air nozzle base 81.

It is attached to the drying work area via fasteners such as bolts and nuts. The base body 811 has a flat installation surface portion 811a to which the air nozzle An is connected and installed, and the installation surface portion 811a is provided with one or more air supply ports 813 [FIG. )reference〕. Further, the back surface portion 811b of the base body 811 has an air inlet 812 into which compressed air flows.

Then, the blower 822 causes compressed air to flow from the air inlet 812 of the base body 811 into the air chamber 814, and further, the compressed air flows from the air chamber 814 to the air supply port 813, so that the rotating body A2 of the air nozzle An is rotated. It flows into the air flow path 31s from the air inlet 31d. Further, the compressed air in the air flow passage 31s flows into the injection pipe portion 4, air is ejected from the tip ejection port 41 in an inclined shape with respect to the axis L, and the rotating body A2 automatically rotates. .. While the rotating body A2 is automatically rotating, the air (air) ejected from the ejecting pipe portion 4 can blow away water such as cleaning liquid, oil, and dust such as chips adhering to the product 9.

In the air jet drying system, the frame 82 is provided with the transport unit 821. The transport unit 821 includes a transport driving unit 821a arranged along the direction from the transport inlet side to the transport outlet side of the frame body 82, and a transport base 821b that is moved by the transport driving unit 821a. . The transport drive unit 821a is, for example, a conveyor and is driven by electric power such as a motor. The air nozzle unit is installed so as to surround the transport unit 821 in the vertical direction and the horizontal (width) direction when the transport inlet side of the air jet drying system is viewed from the front.

The position of the air nozzle unit located above the transport unit 821 can be adjusted in the vertical direction, and the distance between the air nozzle units mounted on the left and right sides of the transport unit 821 can be adjusted in the horizontal direction. When the product 9 is dried (also referred to as cleaning) by blowing off moisture such as cleaning liquid or oil adhering to the product 9 or dust such as chips by the air injection drying system, the frame 82 of the air injection drying system is used. The transfer is performed by the attached transport unit 821.

The product 9 placed on the transfer table 821b of the transfer unit 821 is transferred to the mounting position of the air nozzle unit, and the air nozzle units installed on the upper side, the lower side, the left side, and the right side of the transfer unit 821 there. Is set as a drying work area, and in the process in which the carrier 821b on which the product 9 is placed passes through the drying work area, manufacturing is performed by air injection from the upper, lower, left, and right air nozzles An. The cleaning liquid adhering to the product 9 and dust, dust or oil stains that could not be removed in the preceding process are blown off and the product 9 is dried. Further, in some cases, the cleaning may be performed together with the drying.

Further, in the air nozzle An, when the rotary body A2 is in operation, in the void chamber S formed by the opening 2a of the cylindrical housing portion 2 and the disc portion 5, the injection is performed from the tip end ejection port 41 of the ejection pipe portion 4. The flow of the generated air becomes a turbulent state [see FIG. 9(A) and FIG. 10(A)]. Further, the jet of air from the jet pipe portion 4 and the flow of the air in the turbulent state described above are mixed in the void chamber S to generate a more active and complicated air flow, It is possible to extremely efficiently perform the cleaning of the liquid such as the cleaning liquid adhered to the object 9 and the dust such as the oil or the chips and the drying or the cleaning [see FIGS. 9(A) and 10(A)]. .. In the figure, the air flow is indicated as the air flow.

A1... Fixed body, 1... Fixed base part, 11b... Cylindrical penetration part,
2... Cylindrical housing part, A2... Rotating body, 3... Rotating base part, 31s... Air flow path,
4... Injection pipe part, 5... Disc part, 51... Injection hole part, A3... Rotation regulation body 6... Rotation plate part,
7... Rotation restriction part.

Claims (6)

A fixed main body having a cylindrical housing portion having one end in the axial direction opened, a fixed base portion connected to the other end side in the axial direction of the cylindrical housing portion and having a cylindrical penetrating portion formed therein, and an air passage. A formed rotating base portion, and an injection pipe attached to the rotating base portion, having an inclination angle in the air injection direction along the rotation direction of the rotating base portion and with respect to the axis of the rotating base portion. And a rotating body that has a disc portion that is formed on the rotation base and has an injection hole through which the tip of the injection pipe portion is inserted, and is rotatable within the fixed body; A rotary plate part fixed to the rotary plate part, and a rotation restricting part mounted on the rotary plate part and capable of coming in and out from the outer end part of the rotary plate part so that the inner peripheral side surface of the cylindrical housing part can abut. A rotation restricting body, the rotation restricting portion includes a cylindrical roller rotatably supported by the rotation restricting body, and the roller is the cylindrical housing due to a centrifugal force generated by rotation of the rotating body. An air nozzle characterized in that it comes into contact with the inner peripheral side surface of the portion. The air nozzle according to claim 1, wherein the rotary plate portion of the rotation restricting body is formed as a flat main plate-shaped rotary main plate portion, and the rollers are configured to move in and out from both ends in a longitudinal direction of the rotary main plate portion. Air nozzle characterized by. The air nozzle according to claim 1 or 2, further comprising: a shaft supporting member that rotatably supports the roller, a shaft supporting elongated hole is formed in the rotating plate portion, and the shaft supporting member includes the shaft supporting elongated hole. An air nozzle that is inserted so as to move along . The air nozzle according to claim 1 or 2, wherein the rotation restricting portion has a swinging piece that supports the roller, and the swinging piece is swingably pivotally connected to the rotating plate portion. Air nozzle characterized by. The air nozzle according to any one of claims 1, 2, 3 and 4, wherein the rollers are provided on both sides in the longitudinal direction of the rotary plate portion. The air nozzle according to any one of claims 1, 2, 3, 4 and 5, wherein the rotary base portion is provided with a void therein, and a container portion continuous along an outer periphery of the rotary base portion is provided. An air nozzle characterized by being provided.

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