JP6551203B2 - Cleaning nozzle - Google Patents

Description

  The present invention relates to a cleaning nozzle used in a cleaning apparatus.

2. Description of the Related Art Conventionally, a cleaning nozzle that is used in a cleaning apparatus and injects a liquid or a gas onto an object to be cleaned (hereinafter referred to as “work”) is known.
The cleaning apparatus described in Patent Document 1 includes a cleaning nozzle attached to the tip of a robot arm that can move along the surface of a workpiece. This cleaning apparatus mixes the cleaning solution and a pressurized gas inside the cleaning nozzle, and ejects droplets from the Laval nozzle formed at the tip of the cleaning nozzle toward the work. Droplets ejected from the cleaning nozzle are discharged from an exhaust port provided inside the cleaning cup that covers the periphery of the workpiece and the cleaning nozzle.

JP-A-10-156229

  By the way, Patent Document 1 does not describe a process for drying a work after ejecting droplets onto the work. If the work is to be dried by the cleaning device described in Patent Document 1, it is conceivable to replace the cleaning nozzle with one that discharges only gas. Alternatively, it is conceivable that the work is moved to another equipment having a function of drying the work and the work is dried by the equipment. In that case, there is a concern that the cycle time until the workpiece is liquid-cleaned and dried becomes long.

Moreover, the cleaning apparatus described in Patent Document 1 prevents the droplets sprayed on the work from being scattered by a cleaning cup that covers the periphery of the work and the cleaning nozzle. Therefore, the structure of the cleaning device may be complicated and the size of the cleaning device may be increased.
Furthermore, in the cleaning apparatus described in Patent Document 1, a Laval nozzle that the cleaning nozzle has extends from the end of the robot arm toward the workpiece. The laval nozzle portion of the cleaning nozzle has a thin outer diameter. If the portion is made longer, the strength of the cleaning nozzle may be reduced.

Further, in the cleaning device described in Patent Document 1, since the cleaning nozzle is provided at a position away from the work, it is difficult to control the directivity of the droplet discharged from the injection nozzle. Therefore, in this cleaning apparatus, it may be difficult to reliably clean the cleaning portion of the work.
The present invention has been made in view of the above-described points, and an object of the present invention is to provide a cleaning nozzle capable of shortening the cycle time for cleaning and drying a workpiece.

The cleaning nozzle of the present invention includes a cover portion, a nozzle body, a liquid supply portion, a gas supply portion, a liquid passage, a gas passage, and a discharge passage. A cover part covers the circumference | surroundings of the predetermined washing | cleaning location of a workpiece | work. The nozzle body is formed integrally with the cover part, and forms a cleaning space in which a cleaning part of the workpiece is exposed. The liquid supply unit is supplied with a liquid for cleaning the workpiece. The gas supply unit is supplied with a gas for drying the workpiece. In the liquid passage, one side communicates with the liquid supply unit, and the other side communicates with the cleaning space. One side of the gas passage communicates with the gas supply unit, and the other side communicates with the cleaning space. The discharge passage discharges the liquid and gas discharged from the liquid passage and the gas passage to the cleaning space to the outside of the nozzle body. The cleaning parts are arranged in a shape that is continuous in the circumferential direction. The inner wall of the cleaning space is formed in a tubular shape so as to surround the cleaning portion of the object to be cleaned. The liquid discharge ports through which the liquid passages open on the inner wall of the cleaning space are provided at a plurality of locations adjacent to the cleaning location of the object to be cleaned. The gas discharge ports through which the gas passages open on the inner wall of the cleaning space are provided at a plurality of locations adjacent to the cleaning location of the object to be cleaned. The liquid discharge port and the gas discharge port are alternately provided in the circumferential direction of the inner wall of the cleaning space.

Thereby, the cleaning nozzle discharges the liquid from the liquid passage to the cleaning portion of the work exposed in the cleaning space while covering the periphery of the predetermined cleaning portion of the work with the cover portion, and further, the gas from the gas passage Can be discharged. The liquid and gas discharged into the cleaning space pass through the discharge passage and are discharged to the outside of the nozzle body. Therefore, the cleaning apparatus using this cleaning nozzle can perform the cleaning process and the drying process of the work with the same cleaning nozzle. Therefore, the cleaning apparatus cleans and dries the work because it is not necessary to change the cleaning nozzle between the liquid cleaning process and the drying process of the work, or to move the work between these processes. The cycle time can be shortened.
Further, the cleaning nozzle can suppress the liquid or gas from scattering around the cleaning nozzle by the cover portion. Therefore, the cleaning nozzle can simplify the configuration of the cleaning device using it and miniaturize its size.

It is a perspective view of the washing nozzle by a 1st embodiment of the present invention. It is a perspective view of the work which the cleaning nozzle of a 1st embodiment makes the cleaning object. It is a top view of the washing nozzle in the III direction of FIG. It is a side view of the washing nozzle in the IV direction of FIG. It is a front view of the washing nozzle in the V direction of FIG. It is sectional drawing of the VI-VI line of FIG.3, FIG.5 and FIG. It is sectional drawing of the VII-VII line of FIG. 4, FIG. 5 and FIG. It is an enlarged view of the washing nozzle in the VIII direction of FIG. It is an enlarged view of the washing nozzle in the IX direction of FIG. It is an enlarged view of the liquid discharge port or gas discharge port of the washing nozzle by 2nd Embodiment of this invention. It is sectional drawing of the XI-XI line of FIG. It is an enlarged view of the liquid discharge port or gas discharge port of the washing nozzle by 3rd Embodiment of this invention. It is sectional drawing of the XIII-XIII line | wire of FIG. It is an enlarged view of the liquid discharge port or gas discharge port of the washing nozzle by 4th Embodiment of this invention.

Hereinafter, a plurality of embodiments of the present invention will be described with reference to the drawings.
First Embodiment
A first embodiment of the present invention is shown in FIGS. The cleaning nozzle 1 of the first embodiment is used in a cleaning device for cleaning and drying the workpiece 100.

As shown in FIG. 2, as the workpiece 100 to be cleaned by the cleaning nozzle 1, an example in which the connection between the first member 110 and the second member 120 formed of metal such as aluminum is brazed is exemplified. Ru. In the work 100, the flux used for the brazing adheres to the portion where the first member 110 and the second member 120 are brazed. This location is referred to as a first cleaning location 111. The first cleaning points 111 are arranged in a circumferentially continuous shape, such as a circle or an ellipse, along the connection point between the first member 110 and the second member 120.
In the work 100, the ink used as a mark when brazing the first member 110 and the second member 120 adheres to a part of the second member 120. This location is referred to as the second cleaning location 112.
In FIG. 2, hatching is added to easily show the positions of the first cleaning portion 111 and the second cleaning portion 112.

  The cleaning nozzle 1 discharges liquid and gas onto the work 100 in order to remove the flux adhering to the first cleaning portion 111 and the ink adhering to the second cleaning portion 112. An example of the liquid discharged from the cleaning nozzle 1 is hot water. Moreover, air is illustrated as gas which the washing | cleaning nozzle 1 discharges.

  As shown in FIGS. 1 and 3 to 7, the cleaning nozzle 1 includes a cover 2, a nozzle body 3, a liquid supply unit 4, a gas supply unit 5, a liquid passage 6, a gas passage 7 and a discharge passage 8. Yes. The cleaning nozzle 1 is, for example, a metal 3D printer whose structures are continuously formed of the same material. A metal 3D printer has, for example, a curved space inward by a powder sintering method in which three-dimensional modeling is performed by irradiating a laser onto a flat fine metal powder and sintering layer by layer and repeating this process. It is possible to form products of various shapes.

The cover 2 is formed in a semi-cylindrical shape and is provided at the end of the nozzle body 3. As shown in FIGS. 6 and 7, the cover portion 2 is provided so as to cover the periphery of the first cleaning spot 111 of the workpiece 100. 6 and 7, the workpiece 100 is indicated by a broken line. One end and the other end of the workpiece 100 in the axial direction of the first member 110 are fixed by a fixing jig 200 provided in the cleaning device.
The radial inner wall surface of the cover portion 2 can contact the outer wall of the first member 110 of the workpiece 100. It is preferable that the cover 2 and the workpiece 100 are in close contact with each other. However, a slight gap may be formed due to manufacturing tolerances. In this state, the cover unit 2 can suppress leakage of liquid and gas from the cleaning space 31 formed in the nozzle body 3.

  The nozzle body 3 is configured integrally with the cover portion 2. Further, the nozzle body 3 is provided with a liquid supply unit 4, a gas supply unit 5, a liquid passage 6, a gas passage 7 and a discharge passage 8. In the cleaning space 31 formed inside the nozzle body 3, the first cleaning spot 111 and the second cleaning spot 112 of the workpiece 100 are exposed. The inner wall of the cleaning space 31 is formed in a tubular shape, and encloses the first cleaning portion 111 and the second cleaning portion 112 of the work 100.

  The liquid supply unit 4 is supplied with a liquid for cleaning the workpiece 100 from a liquid tank 201 (see FIG. 6) provided in the cleaning device. An example of this liquid is hot water. A gas for drying the workpiece 100 is supplied to the gas supply unit 5 from a gas tank 202 provided in the cleaning device. An example of this gas is air.

  The liquid passage 6 is provided along the outer wall of the nozzle body 3, and one side communicates with the liquid supply unit 4 and the other side communicates with the cleaning space 31. A part of the wall constituting the liquid passage 6 protrudes from the outer wall of the nozzle body 3 to the outside air side (see FIG. 1 and the like). The liquid passage 6 has a plurality of liquid discharge ports 61 that open to the inner wall of the cleaning space 31. The plurality of liquid discharge ports 61 are directed to the first cleaning portion 111 and the second cleaning portion 112 of the workpiece 100. That is, the liquid passage 6 communicates with the liquid supply unit 4 through a single flow path, and branches into a plurality of flow paths on the way to communicate with the plurality of liquid discharge ports 61. The liquid passage 6 is formed in a curved shape so that the shape of the flow passage communicating the liquid supply portion 4 and the liquid discharge port 61 changes continuously. Furthermore, the liquid discharge port 61 has a shape having directivity with respect to the cleaning portions 111 and 112 of the workpiece 100.

  Similarly to the liquid passage 6, the gas passage 7 is provided along the outer wall of the nozzle body 3, one side communicates with the gas supply unit 5, and the other side communicates with the cleaning space 31. A part of the wall constituting the gas passage 7 protrudes from the outer wall of the nozzle body 3 to the outside air side. The gas passage 7 has a plurality of gas discharge ports 71 that open on the inner wall of the cleaning space 31. The plurality of gas discharge ports 71 are directed to the first cleaning portion 111 of the workpiece 100. That is, the gas passage 7 communicates with the gas supply unit 5 with one flow passage, branches into a plurality of flow passages along the way, and communicates with the plurality of gas discharge ports 71. The gas passage 7 is formed in a curved shape so that the shape of the flow path that connects the gas supply unit 5 and the gas discharge port 71 changes continuously. Further, the gas discharge port 71 has a shape having directivity with respect to the cleaning portion 111 of the workpiece 100.

As shown in FIGS. 8 and 9, the plurality of liquid discharge ports 61 and the plurality of gas discharge ports 71 provided toward the first cleaning portion 111 of the work 100 are circumferentially directed to the inner wall of the cleaning space 31. Are arranged alternately. The four liquid discharge ports 61 arranged in the circumferential direction of the inner wall of the cleaning space 31 are provided at intervals of 90 ° or less in the circumferential direction. The four gas discharge ports 71 arranged in the circumferential direction of the inner wall of the cleaning space 31 are provided at intervals of 90 ° or less in the circumferential direction.
Further, as shown in FIGS. 7 and 8 and the like, four liquid discharge ports 61 are provided toward the second cleaning portion 112 of the workpiece 100. In the present embodiment, the plurality of liquid discharge ports 61 and the plurality of gas discharge ports 71 are all circular.

  The discharge passage 8 communicates with a cleaning space 31 formed inside the nozzle body 3. In the present embodiment, the discharge passage 8 and the cleaning space 31 are formed coaxially. The discharge passage 8 discharges the liquid and the gas discharged from the liquid passage 6 and the gas passage 7 into the cleaning space 31 from the discharge port 81 provided on the opposite side of the cover portion 2 of the nozzle body 3 to the outside of the nozzle body 3. To be discharged.

  In the cleaning method using the cleaning nozzle 1 of the present embodiment, as shown in FIG. 6, first, one end and the other end of the first member 110 of the workpiece 100 are fixed by the fixing jig 200. As shown in FIGS. 6 and 7, the radially inner wall surface of the cover portion 2 and the outer wall of the first member 110 of the workpiece 100 are brought into contact with each other. As a result, the first cleaning portion 111 and the second cleaning portion 112 of the workpiece 100 are exposed to the cleaning space 31 inside the nozzle body 3.

  Next, when a liquid is supplied from the liquid tank 201 to the liquid supply unit 4, the liquid passes through the liquid passage 6, and passes through the plurality of liquid discharge ports 61 and the first cleaning spot 111 and the second cleaning point of the workpiece 100. The liquid is discharged toward the cleaning portion 112. Thereby, the flux adhering to the 1st washing location 111 of work 100 and the ink adhering to the 2nd washing location 112 are removed. The liquid that has cleaned the workpiece 100 passes through the discharge space 8 from the cleaning space 31 and is discharged from the discharge port 81 to the outside of the nozzle body 3.

  Subsequently, when a gas is supplied from the gas tank 202 to the gas supply unit 5, the gas passes through the gas passage 7 and the plurality of gas discharge ports 71 exposes the first of the workpiece 100 exposed to the cleaning space 31. Discharge toward the cleaning portion 111. The gas discharged from the plurality of gas discharge ports 71 to the cleaning space 31 flows to the entire outer wall of the workpiece 100 including the second cleaning portion 112 of the workpiece 100. Thereby, the outer wall of the workpiece 100 including the first cleaning portion 111 and the second cleaning portion 112 is dried. The gas that has dried the workpiece 100 passes through the discharge passage 8 from the cleaning space 31 and is discharged from the discharge port 81 to the outside of the nozzle body 3.

This embodiment has the following effects.
(1) In the present embodiment, the cleaning process and the drying process of the workpiece 100 can be performed by the same cleaning nozzle 1. Therefore, the cleaning apparatus using the cleaning nozzle 1 according to the present embodiment does not need to replace the cleaning nozzle 1 between the liquid cleaning process and the drying process of the work 100, or the work 100 is moved between these processes. Therefore, the cycle time for cleaning and drying the workpiece 100 can be shortened.
Further, the cleaning nozzle 1 of the present embodiment can suppress the liquid or gas from being scattered around the cleaning nozzle 1 by the cover portion 2. Therefore, the cleaning nozzle 1 can be simplified in the configuration of a cleaning device using the same, and the size of the cleaning nozzle 1 can be reduced.

(2) In the present embodiment, the liquid passage 6 and the gas passage 7 are provided in the nozzle body 3.
Thus, the cleaning nozzle 1 can increase the rigidity of the liquid passage 6 and the gas passage 7 together with the nozzle main body 3 without making the liquid passage 6 and the gas passage 7 into a single elongated pipe.

(3) In the present embodiment, the liquid discharge port 61 of the liquid passage 6 and the gas discharge port 71 of the gas passage 7 are both provided at positions adjacent to the cleaning points 111 and 112 of the work 100, and , Directed to the cleaning points 111 and 112 of the workpiece 100.
Thus, the cleaning nozzle 1 can discharge the liquid and the gas toward the cleaning points 111 and 112 of the workpiece 100, and can reliably clean and dry the cleaning points 111 and 112.

(4) In the present embodiment, the liquid discharge ports 61 included in the liquid passage 6 are provided at a plurality of locations facing the cleaning locations 111 and 112 of the workpiece 100. Further, the gas discharge ports 71 included in the gas passage 7 are provided at a plurality of locations facing the cleaning locations 111 and 112 of the workpiece 100.
Thereby, it is possible to reliably wash and dry the washing points 111 and 112 disposed widely on the work 100.

(5) In the present embodiment, the plurality of liquid discharge ports 61 and the plurality of gas discharge ports 71 are alternately provided in the circumferential direction of the inner wall of the cleaning space 31.
As a result, the cleaning nozzle 1 can reliably clean and dry the cleaning portions 111 and 112 arranged in a wide range on the workpiece 100.

(6) In the present embodiment, in the liquid passage 6, a flow path that connects the liquid supply unit 4 and the liquid discharge port 61 is formed in a curved shape. Further, the gas passage 7 has a curved flow path that connects the gas supply unit 5 and the gas discharge port 71.
Thereby, the pressure loss of the liquid flowing through the liquid passage 6 is reduced. Further, the pressure loss of the air flowing through the gas passage 7 is reduced. Therefore, the cleaning nozzle 1 can increase the discharge pressure of the liquid jetted from the liquid discharge port 61 and can increase the discharge pressure of the gas jetted from the gas discharge port 71.

(7) In the present embodiment, the cover 2 is in contact with the outer wall of the work 100, and can suppress the leakage of liquid and gas from the cleaning space 31.
Thus, the cleaning nozzle 1 can suppress the liquid or gas from scattering around the cleaning nozzle 1 by the cover portion 2.

(8) In the present embodiment, the cover 2, the nozzle body 3, the liquid supply unit 4, the gas supply unit 5, the liquid passage 6, the gas passage 7, and the discharge passage 8 are integrally formed by a 3D printer. is there.
Thereby, the washing nozzle 1 can be easily manufactured while increasing its rigidity.

Second Embodiment
A second embodiment of the present invention will be described with reference to FIGS.
10 and 11 are enlarged views of the liquid discharge port 61 or the gas discharge port 71 of the cleaning nozzle 1. The liquid discharge port 61 or the gas discharge port 71 in the second embodiment is formed in an elliptical shape having a major axis along the direction in which the cleaning portions 111 and 112 of the workpiece 100 extend. The liquid discharge port 61 or the gas discharge port 71 has a shape having directivity with respect to the cleaning portions 111 and 112 of the workpiece 100. Thereby, the cleaning nozzle 1 of the second embodiment can discharge the liquid and the gas so as to diffuse toward the cleaning portions 111 and 112 of the workpiece 100. Therefore, the cleaning nozzle 1 can clean and dry the cleaning portions 111 and 112 in a wide range.

Third Embodiment
A third embodiment of the present invention will be described with reference to FIGS.
12 and 13 are enlarged views of the liquid discharge port 61 or the gas discharge port 71 of the cleaning nozzle 1. The liquid discharge port 61 or the gas discharge port 71 in the third embodiment is formed in an oval shape that is curved along the direction in which the cleaning points 111 and 112 of the workpiece 100 extend. The liquid discharge port 61 or the gas discharge port 71 has a shape having directivity with respect to the cleaning portions 111 and 112 of the workpiece 100. As a result, the cleaning nozzle 1 of the third embodiment can discharge liquid and gas so as to diffuse toward the cleaning points 111 and 112 installed in a wide area of the work 100. Therefore, the cleaning nozzle 1 can clean and dry the cleaning portions 111 and 112 in a wide range.

Fourth Embodiment
A fourth embodiment of the present invention will be described with reference to FIG.
FIG. 14 is an enlarged view of the liquid discharge port 61 or the gas discharge port 71 of the cleaning nozzle 1. The cleaning nozzle 1 of the fourth embodiment includes a mesh portion 62 in the liquid discharge port 61 or the gas discharge port 71.
Thus, the cleaning nozzle 1 according to the fourth embodiment can discharge the liquid and the gas widely and strongly toward the cleaning points 111 and 112 of the workpiece 100. Therefore, the cleaning nozzle 1 can reliably clean and dry the cleaning points 111 and 112 in a wide range.

(Other embodiments)
(1) In the embodiment described above, the cleaning nozzle 1 is formed by a metal 3D printer. On the other hand, in another embodiment, after forming the member which divided the cleaning nozzle 1 in the predetermined position by cutting etc., you may form by joining those members integrally.

(2) In the embodiment described above, the plurality of liquid discharge ports 61 and the plurality of gas discharge ports 71 are alternately provided one by one in the circumferential direction of the inner wall of the cleaning space 31. On the other hand, in other embodiments, a plurality of liquid discharge ports 61 and a plurality of gas discharge ports 71 may be alternately provided in the circumferential direction of the inner wall of the cleaning space 31. Further, the position, size, shape, number, and the like of the liquid discharge port 61 and the gas discharge port 71 are appropriately set so as to match the cleaning locations 111 and 112 of the workpiece 100.

(3) In the above-described embodiment, the workpiece 100 is illustrated by brazing the connection portion between the first member 110 and the second member 120. On the other hand, in other embodiments, the position, size, shape, and the like of the workpiece 100 and the cleaning portion are not limited at all. Further, the factors that cause the cleaning spots 111 and 112 are not limited to brazing and the like. In that case, the cleaning nozzle 1 is set such that its size, shape, and the like conform to the workpiece 100 and its cleaning portion.
As described above, the present invention is not limited to the above-described embodiments, and can be implemented in various forms without departing from the scope of the invention in addition to combining the above-described plurality of embodiments.

Reference Signs List 1 · · · Cleaning nozzle 2 · · · Cover portion · · · · · · · 4 main body liquid supply portion 5 · · · gas supply portion 6 · · · liquid passage 7 31 ・ ・ ・ Washing space

Claims (8)

A cleaning nozzle used in a cleaning apparatus for cleaning the object to be cleaned (100),
A cover portion (2) covering the periphery of a predetermined cleaning spot (111) of the cleaning object;
A nozzle body (3) configured integrally with the cover part and forming a cleaning space (31) in which the cleaning location of the cleaning object is exposed;
A liquid supply unit (4) to which a liquid for cleaning the object to be cleaned is supplied;
A gas supply unit (5) to which a gas for drying the object to be cleaned is supplied;
A liquid passage (6) in which one side is in communication with the liquid supply unit and the other side is in communication with the cleaning space;
A gas passage (7) in which one side is in communication with the gas supply unit and the other side is in communication with the cleaning space;
A discharge passage (8) for discharging the liquid and gas discharged from the liquid passage and the gas passage to the cleaning space to the outside of the nozzle body , and
The washing location is arranged in a shape that is continuous in the circumferential direction,
The inner wall of the cleaning space is formed in a tubular shape so as to surround the cleaning portion of the object to be cleaned,
The liquid discharge port (61) having the liquid passage opened to the inner wall of the cleaning space is provided at a plurality of positions adjacent to the cleaning portion of the object to be cleaned,
The gas discharge port (71) having the gas passage opened to the inner wall of the cleaning space is provided at a plurality of positions adjacent to the cleaning portion of the object to be cleaned,
The cleaning nozzle in which the liquid discharge port and the gas discharge port are alternately provided in the circumferential direction of the inner wall of the cleaning space .   The cleaning nozzle according to claim 1, wherein the liquid passage and the gas passage are provided in the nozzle body. Before SL liquid material discharge port is directed to the cleaning portion of the cleaning object,
Before Kiki material discharge port, the washing nozzle according to claim 1 or 2 in which are directed to the cleaning portion of the cleaning object. The liquid discharge port or the gas discharge port, the washing nozzle according to any one of 3 from elliptical circular der Ru請 Motomeko 1. The cleaning nozzle according to any one of claims 1 to 4 , further comprising a net (62) provided in the liquid discharge port or the gas discharge port. In the liquid passage, a part of a flow passage communicating the liquid supply portion and the liquid discharge port is formed in a curved shape.
The cleaning nozzle according to any one of claims 1 to 5 , wherein in the gas passage, a part of a flow passage communicating the gas supply portion and the gas discharge port is formed in a curved shape. The cleaning nozzle according to any one of claims 1 to 6 , wherein the cover portion is in contact with an outer wall of the object to be cleaned and can suppress leakage of liquid and gas from the cleaning space. Said cover portion, said nozzle body, the liquid supply portion, the gas supply unit, said liquid passage, said gas passage and said discharge passage, claims 1 to 7 any one of those which is mono KaradaNaru form The washing nozzle as described in a paragraph.

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