KR101956512B1 - Revolution Shock-Wave Nozzle - Google Patents

Abstract

The present invention provides a shock wave rotation injection nozzle comprising: a nozzle cap which has a receiving space formed therein, has a center hole formed in a front end portion thereof and communicating with the receiving space, and has a fastening portion provided on a rear end portion thereof and having an air supply hole communicating with the receiving space; a nozzle tip which is received in the receiving space of the nozzle cap, has a front surface portion exposed to the outside of the center hole and an open rear surface portion corresponding to the air supply hole such that compressed air supplied to the air supply hole is flowed to the inside of a hollow portion, and injects the compressed air flowed to the hollow portion through a first injection hole vertically punched in a center area of the front surface portion and second and third injection holes punched in an outer area of the front surface portion on a center line of the front surface portion to be positioned on both sides of the first injection hole and inclinedly punched in different directions with respect to the center line; a plurality of ball bearings which are received in the receiving space of the nozzle cap and fitted to the outside of the front end portion of the nozzle tip in order to support the nozzle tip to rotate; and a friction bearing which is received in the receiving space of the nozzle cap and fitted to the outside of the rear end portion of the nozzle tip in order to maintain a frictional force between the nozzle cap and the nozzle tip. The nozzle tip is rotated at a low speed by an injection pressure of the compressed air injected through the first to third injection holes, and shock waves are generated in the compressed air injected through the injection holes of the nozzle tip rotating at a low speed. According to the present invention, shock waves generated by rotation at a low speed can increase injection efficiency.

Description

Shock Wave Rotation Injection Nozzle {Revolution Shock-Wave Nozzle}

[0001] The present invention relates to a shock wave rotary spray nozzle, and more particularly, to a shock wave rotary spray nozzle, in which a plurality of spray holes formed in a nozzle tip are drilled at different angles to rotate the nozzle tip with the spray pressure of compressed air injected into the spray hole And an automatic shock wave generated by the compressed air discharged to the injection hole of the rotating nozzle tip is generated to improve the injection efficiency of the compressed air.

In general, the complexity of the mold is determined according to the structure of the product to be molded. However, the structure of the product is simple, the structure of the mold is simple, and the structure of the product is complex.

When the structure of a complicated mold is examined, a lot of narrow and long recesses are formed. If resin residue remaining after molding is caught in the recess, molding defects will occur.

Therefore, before the molding operation is performed, dust and dirt trapped in these recesses are cleaned and dried. At this time, if necessary, the mold may be sprayed with compressed air to remove dust, or may be washed with water and then sprayed with compressed air to dry.

Further, as the structure of the mold becomes complicated, the number of dusts adhered to the grooves increases. Therefore, it is necessary to use a large number of nozzles necessary for cleaning and drying, and it is possible to remnant without removing dust or cleaning liquid, In addition, there is a problem that a long time is required for washing and drying the mold.

(Patent Document 1) Korean Patent Laid-Open No. 10-2016-0125621 (Publication date 2016.11.01.)

(Patent Document 2) Utility Model No. 20-0307100 (Registered on Feb. 28, 2003)

SUMMARY OF THE INVENTION The present invention has been made to solve the conventional problems,

A plurality of nozzles perforated by predetermined angles are formed on one surface of the nozzle tip so as to face different directions and the nozzle tip is naturally rotated by the jetting pressure of the compressed air jetted to the jetting nozzle, The nozzle tip is prevented from rotating at a high speed by a predetermined angle of the jetting hole and is rotated at low speed. The jetting efficiency is improved by shock waves generated at the low speed rotation of the nozzle tip, and a wider range is jetted with a small amount of compressed air So that the efficiency of washing or drying can be increased.

According to an aspect of the present invention, there is provided a shock wave rotary jet nozzle, comprising: a housing space formed therein; a central hole communicating with the housing space at a distal end thereof; A nozzle cap having a fastening portion formed with an air supply hole communicating with the space; Wherein the front surface of the nozzle cap is exposed to the outside of the center hole and the open rear surface of the nozzle cap is connected to the air supply hole so that compressed air supplied into the air supply hole is introduced into the hollow space, A second spray hole formed in the outer surface of the front part on the center line of the front part so as to be positioned on both sides of the first spray hole and being perforated obliquely toward different directions with respect to the center line, A nozzle tip formed with a third injection hole and injecting compressed air introduced into the hollow portion; A plurality of ball bearings interposed in the receiving space of the nozzle cap and fitted to the outside of the tip of the nozzle tip to support the nozzle tip to rotate; And a friction bearing interposed in the receiving space of the nozzle cap and fitted outside the rear end of the nozzle tip to maintain a friction force between the nozzle cap and the nozzle tip, wherein the nozzle tip is sprayed onto the first to third spray holes And a shock wave is generated in the compressed air injected to the injection hole of the rotating nozzle tip.

Wherein the nozzle cap has a first cap formed with the center hole and forming a part of the accommodation space so as to cover one side of the nozzle tip, and a fastening part having the air supply hole formed therein, And a second cap forming another part of the accommodation space is coupled and configured.

In addition, the first cap and the second cap are each formed with a coupling portion on a surface to be brought into mutual contact, and the first cap and the second cap are coupled through welding of the coupling portion.

Here, the first injection hole of the nozzle tip is vertically machined at a position spaced from the center point of the front part by 1 to 2 mm, and the second injection hole is orthogonal to the center line of the first injection hole passing through the center point of the front part, And the third injection hole is formed at a predetermined angle in the direction opposite to the direction of inclination of the second injection hole on the same line as the second injection hole, and the second injection hole is inclined at a predetermined angle toward the first injection hole And is inclined.

In particular, the angle between the second jetting hole and the third jetting hole is set such that a line passing through the center point of the front portion of the nozzle tip and the center point of the first jetting hole is defined as an X axis, a longitudinal direction of the nozzle tip is defined as a Y axis, When the line passing through the center of the second jetting hole and the third jetting hole is defined as the Z axis, an angle formed between the Y axis and the Y axis is 22 ° to 28 °, and a Z axis And an angle of between 8 and 13 degrees.

A portion of the compressed air supplied to the air supply hole of the nozzle cap leaks to the center hole of the nozzle cap through the outer side of the nozzle tip and the compressed air leaking into the center hole is compressed by the rotation of the nozzle tip, To the third jetting hole, in accordance with the flow of the compressed air.

In addition, the nozzle tip is provided with a plurality of ball bearings fitted on the outer side of the tip end portion and a step portion for supporting a friction bearing fitted on the outer side of the rear end portion, and a plurality of ball bearings interposed in the receiving space of the nozzle cap And a support step for supporting the ball bearing and the friction bearing corresponding to the position of the bearing.

According to an embodiment of the present invention, the nozzle is naturally rotated by the jetting pressure of the compressed air injected into the jetting hole, and is rotated by a predetermined angle of rotation according to a predetermined angle of the jetting hole, In addition, the injection efficiency is increased by shock waves generated at low speed rotation instead of high speed rotation due to the influence of the spray angle.

In addition, since a single nozzle of the rotary nozzle can be jetted over a wide range, it is possible to save energy by using the nozzle in the same range.

In addition, a plurality of shock wave rotary injection nozzles are arranged in a cleaning device for washing a mold or a drying device for drying a cleaned mold, thereby improving the cleaning or drying efficiency by washing dusts or water in the groove by high-pressure shock waves In addition, there is an effect that the working time due to washing or drying is shortened.

1 is a perspective view showing a shock wave rotary jetting nozzle according to an embodiment of the present invention;
2 is an exploded perspective view showing a shock wave rotary jetting nozzle according to an embodiment of the present invention,
3 is a sectional view showing a shock wave rotary jet nozzle according to an embodiment of the present invention;
FIG. 4 is a perspective view illustrating a spray angle of a spray hole in a shock wave rotary spray nozzle according to an embodiment of the present invention. FIG.
FIG. 5 is a plan sectional view for explaining a position and a spray angle of a spray hole formed in a front portion of a nozzle tab in a shock wave rotary spray nozzle according to an embodiment of the present invention; FIG.
6 is a cross-sectional view taken along the line A-A 'in FIG. 5 for explaining a spray angle of a spray hole in a shock wave rotary spray nozzle according to an embodiment of the present invention;
FIG. 7 is a cross-sectional view taken along line B-B 'of FIG. 5 for explaining a spray angle of a spray hole in a shock wave rotary spray nozzle according to an embodiment of the present invention; FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that the various embodiments of the present invention are different, but need not be mutually exclusive. For example, certain features, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in connection with one embodiment. It is also to be understood that the position or arrangement of the individual components within each described embodiment may be varied without departing from the spirit and scope of the present invention.

The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention is to be limited only by the appended claims, along with the full scope of equivalents to which the claims are entitled, if properly explained. In the drawings, like reference numerals refer to the same or similar functions throughout the several views.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. Also, in certain cases, there may be a term selected arbitrarily by the applicant, in which case the meaning thereof will be described in detail in the description of the corresponding invention. Therefore, the term used in the present invention should be defined based on the meaning of the term, not on the name of a simple term, but on the entire contents of the present invention.

Whenever an element is referred to as "including" an element throughout the description, it is to be understood that the element may include other elements as well, without departing from the other elements unless specifically stated otherwise. Also, the terms " part, "" module," and the like, which are described in the specification, refer to a unit for processing at least one function or operation, which may be implemented by hardware or software or a combination of hardware and software.

1 to 3, the shock wave rotary jet nozzle according to an embodiment of the present invention includes a nozzle cap 100, a nozzle tip 200, a ball bearing 300, and a friction bearing 400 .

First, the nozzle cap 100 is formed with a hollow accommodation space 111 therein, a center hole 112 communicating with the accommodation space 111 is formed at the tip end thereof, And an air supply hole 121 formed in the air supply hole 121 is formed. Here, the coupling part 122 of the nozzle cap 110 is a means for coupling with a compressed air supply part (not shown) for supplying compressed air, and may be provided in a tapered shape if necessary.

The structure of the nozzle cap 100 will be described in more detail with a combination of a first cap 110 and a second cap 120 that surround the outside of the nozzle tip 200 to accommodate the nozzle tip 200.

A part of the accommodation space 111 is formed in the first cap 110 so as to cover one side of the nozzle tip 200 and a center hole 112 communicating with the accommodation space 111 is formed.

The second cap 120 is provided with a coupling part 122 having another part of the accommodation space 111 formed to cover the other side of the nozzle tip 200 and having an air supply hole 121 formed therein.

The first cap 110 and the second cap 120 are connected to each other with binding portions 113 and 123 respectively and the first cap 110 and the second cap 120 are welded to each other through welding of the binding portions 113 and 123. [ (Not shown). In this case, the coupling portions 113 and 123 may be provided in a form in which a joint portion formed at an end portion of the second cap is inserted into the flange formed inside the flange at the end portion of the first cap, And the flanges formed at the ends of the two caps may be welded to each other. Also, the flange may be provided in a circular shape, but it may have a hexagonal nut shape to improve the ease of assembly.

Here, the binding portions 113 and 123 provide a welding position when welding is performed for the coupling of the first cap 110 and the second cap 120. If the fastening portions 113 and 123 are not formed, the contact surfaces of the first cap 110 and the second cap 120 must be directly welded. The outer shape of the nozzle cap 100 may be deformed by the welding heat, Deformation of the accommodated nozzle tip 200 may occur. In order to prevent the above-mentioned problems, the binding portion 113.123 is formed at the end of the first cap 110 and the second cap 120, and the above-mentioned problems are solved by welding the overlapping portions 113, And the first cap 110 and the second cap 120 can be firmly and stably coupled.

3, the nozzle tip 200 has a rear portion opened to form a hollow portion 210 and spray holes 211, 212, and 213 communicating with the hollow portion 210 are formed on the front surface of the nozzle tip, Respectively.

The nozzle tip 200 is received in the receiving space 111 of the nozzle cap 100. The front portion of the nozzle tip 200 accommodated in the accommodation space 111 is exposed to the outside of the nozzle cap 100 through the center hole 112 of the nozzle cap 100 and the rear portion of the nozzle tip 200 And is located at a position corresponding to the air supply hole 121. That is, the compressed air supplied to the air supply hole 121 flows into the hollow portion 210 of the nozzle tip 200 and is injected into the injection holes 211, 212, and 213.

As shown in FIGS. 4 and 5, when a plurality of spray holes 211, 212, and 213 formed in the front portion of the nozzle tip 200 are divided into a central region and an outer region with respect to a central point of the front portion, The second spray hole 212 and the third spray hole 213 are formed in the outer region and the second spray hole 212 and the third spray hole 213 are formed in the first spray hole 212, (211) on the left and right sides of the reference.

In more detail, the first spray hole 211 is vertically processed toward the hollow portion 210 at a position spaced from the center point of the front portion by 1 to 2 mm, and the second spray hole 212 is formed at a first Is inclined at a predetermined angle toward the first spray hole 211 at the center line b of the front face orthogonal to the center line a of the spray hole 211 and the third spray hole 213 is inclined at a predetermined angle toward the second spray hole 211, And is inclined at a predetermined angle in the direction opposite to the inclined direction of the second injection hole 212 in the same line as the injection hole 212.

At this time, the second spray hole 212 and the third spray hole 213 pass through the edge of the hollow portion 210, and a part of the front surface and the side surface of the hollow portion 210 are penetrated.

6 and 7, the angle between the second spray hole 212 and the third spray hole 213 is larger than the angle between the center of the front portion of the nozzle tip 200 and the center of the first spray hole 211 A line passing through the center of the second spray hole 212 and the third spray hole 213 is perpendicular to the X axis on the front surface, and a line passing through the center of the second spray hole 212 and the third spray hole 213 is Z Axis, an angle formed with the Y-axis with respect to the X-axis and Y-axis relative to the Z-axis with reference to the Y-axis and Z-axis is 22 ° to 28 °.

The second injection hole 212 and the third injection hole 213 formed at the above-described angles are rotated by the injection pressure of the compressed air to be injected, and the nozzle tip 200 is rotated by the injection of the rotating nozzle tip 200 The compressed air injected into the ball generates a shock wave through a state of high pressure and a state of low pressure.

2 and 3, the ball bearing 300 is interposed in the receiving space 111 of the nozzle cap 100 and is fitted outside the tip of the nozzle tip 200 to support the nozzle tip 200 to rotate.

The friction bearing 400 is interposed in the receiving space 111 of the nozzle cap 100 and is fitted outside the rear end of the nozzle tip 200 to maintain the friction force between the nozzle cap 100 and the nozzle tip 200 .

At this time, a plurality of ball bearings 300 to be fitted on the outer side of the tip portion and a step portion 214 for supporting the friction bearing 400 to be fitted on the outer side of the rear end portion are formed on the outer surface of the nozzle tip 200, A plurality of ball bearings 300 and a support jaw 130 for supporting the ball bearings 300 and the friction bearings 400 corresponding to the positions of the friction bearings 400 do.

That is, the nozzle tip 200 is rotatably coupled to the inside of the nozzle cap 100 by the plurality of ball bearings 300 and the friction bearings 400.

The compressed air supplied to the air supply hole 121 flows into the hollow portion 210 of the nozzle tip 200 and is injected into the plurality of spray holes 211, 212 and 213, The nozzle tip 200 is rotated by the jetting pressure of the compressed air injected into the holes 212 and the third spray holes 213. The compressed air injected into the spray holes 211, 212 and 213 of the rotating nozzle tip 200 generates a shock wave through the high pressure state and the low pressure state.

A portion of the compressed air supplied to the air supply hole 121 of the nozzle cap 100 leaks to the center hole 112 of the nozzle cap 100 through the outer side of the nozzle tip 200, 112 are injected as they are collected in the center by the rotation of the nozzle tip 200 and are injected along the flow of the compressed air injected to the first to third injection holes.

The nozzle is naturally rotated by the jetting pressure of the compressed air injected into the jetting hole, and the jetting efficiency of the compressed air injected to the jetting nozzle of the rotating nozzle is increased to increase the efficiency of cleaning or drying .

In addition, a plurality of shock wave rotary injection nozzles are arranged in a cleaning device for washing a mold or a drying device for drying a cleaned mold, thereby improving the cleaning or drying efficiency by washing dusts or water in the groove by high-pressure shock waves , Which shortens the working time due to washing and drying.

Although the preferred embodiments of the present invention have been described, the present invention is not limited to the specific embodiments described above. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the appended claims, And equivalents may be resorted to as falling within the scope of the invention.

100: nozzle cap 110: first cap
111: accommodation space 112: center hole
120: second cap 121: air supply hole
122: fastening parts 113, 123:
130: Support jaw 200: Nozzle tip
210: hollow part 211: first minute hole
212: The second minus 213: The third minus
214: step jaw 300: ball bearing
400: Friction bearing

Claims (7)

A nozzle cap having a receiving space formed therein and having a central hole communicated with the receiving space at the tip end thereof and having a fastening portion formed at the rear end thereof with an air supply hole communicating with the accommodating space; The front surface of the nozzle cap is exposed to the outside of the center hole and the open rear surface of the nozzle cap is connected to the air supply hole so that compressed air supplied into the air supply hole is introduced into the hollow portion, A first spray hole perforated vertically in a central region, and a second spray hole punctured in an outer region of the front portion on a center line of the front portion so as to be positioned on both sides of the first spray hole and perforated obliquely toward different directions with respect to the center line, A nozzle tip formed with a third injection hole and injecting compressed air introduced into the hollow portion; A plurality of ball bearings interposed in the receiving space of the nozzle cap and fitted to the outside of the tip of the nozzle tip to support the nozzle tip to rotate; And a friction bearing interposed in the receiving space of the nozzle cap and fitted outside the rear end of the nozzle tip to maintain a friction force between the nozzle cap and the nozzle tip,
Wherein the first injection hole of the nozzle tip is vertically machined at a position spaced from the center point of the front part by 1 to 2 mm and the second injection hole is orthogonal to the center line of the first injection hole passing the center point of the front part The third injection hole is inclined at a predetermined angle in the direction opposite to the inclination direction of the second injection hole in the same line as the second injection hole, and the second injection hole is machined inclined at a predetermined angle from the center line toward the first injection hole, The angle between the second jetting hole and the third jetting hole is an X axis, a longitudinal direction of the nozzle tip is a Y axis, and a line passing through the center point of the front part of the nozzle tip and the center point of the first jet hole is a right angle When the line passing through the center of the second jetting hole and the third jetting hole is defined as the Z axis, an angle formed between the Y axis and the Y axis is 22 ° to 28 °, and a Z axis The angle between The nozzle tip is rotated at a low speed by the jetting pressure of the compressed air injected to the first to third nozzles and the shock wave is injected into the compressed air injected to the nozzle hole of the nozzle tip rotating at a low speed .
A portion of the compressed air supplied to the air supply hole of the nozzle cap leaks to the center hole of the nozzle cap through the outer side of the nozzle tip and the compressed air leaking to the center hole is compressed by the rotation of the nozzle tip, Wherein the spraying nozzle is sprayed along the flow of compressed air injected into the spraying nozzle. The method according to claim 1,
Wherein the nozzle cap has a first cap formed with the center hole and forming a part of the accommodation space so as to cover one side of the nozzle tip, and a fastening part having the air supply hole formed therein, And a second cap forming a different part of the accommodation space is coupled and configured. 3. The method of claim 2,
Wherein the first cap and the second cap are each formed with a coupling portion on a surface where the first cap and the second cap are in contact with each other, and the first cap and the second cap are coupled through welding of the coupling portion. delete delete delete The method according to claim 1,
Wherein the nozzle tip is provided with a plurality of ball bearings fitted on the outer side of the tip end portion and a step portion for supporting a friction bearing fitted on the outer side of the rear end portion,
Wherein the nozzle cap has a plurality of ball bearings and a support step for supporting the ball bearings and the friction bearings corresponding to positions of the friction bearings in the receiving space of the nozzle cap.

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