JP2022170421A - Cleaning device for projection part and projection part cleaning method - Google Patents

Abstract

To provide a cleaning device for a projection part which enables a cleaning unit to move to clean a surface of a workpiece having a projection part while maintaining airtightness in a casing.SOLUTION: A cleaning device for a projection part includes: a cleaning unit 3 which is supplied with high pressure water L from a high pressure water supply source P; a rotation drive part 4 connected to the cleaning unit 3; a move part 5 which moves the cleaning unit 3 and the rotation drive part 4; and a casing 6 which is disposed in front of a body 2 of the cleaning device 1 for the projection part and encloses a workpiece B, a cleaning object. The cleaning unit 3 has multiple jet holes 3e for jetting the high pressure water L in an inner side direction of the workpiece B in a nozzle 3d disposed at its tip.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a protrusion cleaning apparatus and a protrusion cleaning method for cleaning a work having a protrusion such as a bolt or nut, removing paint, or removing rust.

Conventionally, in various cleaning operations such as cleaning exterior walls, peeling paint, and removing rust (hereinafter collectively referred to as cleaning), there are cleaning using blasting using spherical abrasives and cleaning using chemical agents. From the point of view of recovery work after cleaning and cost, a method of cleaning the surface of the workpiece by injecting a water jet from a high-pressure gun to the workpiece is often adopted.

For example, the high-pressure water jet cleaning gun described in Japanese Patent Application Laid-Open No. 60-183078 (hereinafter referred to as "Patent Document 1") cleans the processing area while surrounding it with a brush to prevent the scattering of waste liquid after cleaning. device was used.

In addition, the water jet nozzle described in Japanese Patent Application Laid-Open No. 2005-105753 (hereinafter referred to as “Patent Document 2”) is equipped with a detachable attachment to the nozzle for wall surface treatment, so that the uneven surface, inner corners, and outer corners can be obtained. We were able to respond appropriately and quickly to various parts of the concrete surface.

JP-A-60-183078 JP-A-2005-105753

However, the high-pressure water jet cleaning gun described in Patent Document 1 and the water jet nozzle described in Patent Document 2 are aimed at cleaning without scattering the waste liquid after cleaning. It has not been envisaged to adjust the position of the nozzles appropriately for the flow rate and the like.

In addition, by surrounding the work with brushes, casings, etc., emphasis was placed on moving uneven surfaces and steps. In order to carry out appropriate washing, further contrivances have been expected.

The present invention provides a protrusion cleaning apparatus and a protrusion cleaning method for cleaning the surface of a workpiece having protrusions by making the cleaning unit movable while maintaining airtightness within the casing. With the goal.

A cleaning apparatus for protrusions of the present invention comprises a cleaning unit that injects high-pressure water, a rotary drive unit that is connected to the cleaning unit, a moving unit that moves the cleaning unit and the rotary drive unit, and a cleaning apparatus for protrusions. a casing disposed at the front of the main body and surrounding a work to be cleaned, wherein the cleaning unit has a nozzle disposed at the tip thereof, which has a plurality of injection holes for injecting the high-pressure water toward the inside of the work. have.

The projection cleaning method of the present invention uses the cleaning apparatus for projections of the present invention, and after cleaning the projection at the tip of the workpiece to be cleaned, the cleaning unit and the nozzle are moved to the workpiece by driving the moving section. (B) to wash the side of the work.

According to the present invention, a protrusion cleaning apparatus and protrusion cleaning method for cleaning the surface of a work having protrusions are provided by making the cleaning unit movable while maintaining airtightness within the casing. can.

1 is a perspective view showing a cleaning device for projections according to an embodiment of the present invention; FIG. (a) Cross-sectional view showing the cleaning device for projections of the embodiment (before movement), (b) Cross-sectional view showing the cleaning device for projections of the embodiment (after movement) (a) Cross-sectional view showing the nozzle positions of the cleaning device for projections of the embodiment (before movement), (b) Cross-sectional view showing the nozzle positions of the cleaning device for projections of the embodiment (after movement) Sectional view showing the details of the cleaning device for projections of the embodiment Sectional view showing details of cleaning device for protrusions of another embodiment The perspective view which showed the state which attached the washing|cleaning apparatus for projection parts to the moving mechanism.

Embodiments of the present invention will be described with reference to the drawings as appropriate.

(Structure of Cleaning Device for Protrusions)
The protrusion cleaning apparatus 1 of the present embodiment cleans workpieces (cleaning targets) having protrusions such as bolts and nuts in various cleaning operations such as cleaning bridges, roads, and outer walls, peeling paint, and removing rust. It is for As shown in FIG. 1, the projection cleaning apparatus 1 includes a cleaning unit 3 to which high-pressure water L (see FIG. 3) is supplied from a high-pressure water supply source P (see FIG. 4), and a rotating unit 3 connected to the cleaning unit 3. A drive unit 4, a moving unit 5 (see FIG. 4) for moving the cleaning unit 3 and the rotation drive unit 4, and a casing 6 arranged in front of the main body 2 of the cleaning device for protrusions and surrounding the work B. Prepare.

The washing unit 3 is for injecting high-pressure water L of 10 to 250 MPa. As shown in FIG. 4, the cleaning unit 3 has a rotating body 3b connected to the rotary drive section 4 and a high-pressure water supply path 3c for supplying high-pressure water L in the cleaning unit main body 3a.

The cleaning unit main body 3a is fixed to the main body 2 of the protrusion cleaning device 1, and a rotating body 3b arranged in the cleaning unit main body 3a is rotatably arranged. A high-pressure water supply passage 3c passes through the inside of the rotating body 3b. The high-pressure water supply path 3c is a flow path to which the high-pressure water L is supplied from the high-pressure water supply source P. As shown in FIG. A nozzle 3d for injecting high-pressure water L is connected to the tip of the cleaning unit 3. The nozzle 3d has a plurality of injection holes for injecting high-pressure water L toward the inside of the workpiece B (see FIG. 1). 3e is placed. The nozzles 3d and the injection holes 3e can be selected from direct shots, parallel shots, and the like, and the number of nozzles may be singular or plural.
For example, in the present specification, two injection holes 3e are provided to inject the high-pressure water L inwardly with respect to the central axis. It is conceivable that the high-pressure water L is injected inwardly with respect to the axis, and the other two injection holes 3e inject the high-pressure water L outwardly with respect to the central axis.
In addition, the position (height, width, etc.) and angle of the nozzle can be changed according to the surface shape of the work B (flatness, unevenness, screw grooves, etc.).

As the plurality of injection holes 3e, as shown in FIG. 3, when the first injection hole 3e1 and the second injection hole 3e2 are provided, the distance W1 between the first injection hole 3e1 and the second injection hole 3e2 is given by It is preferable to form the nozzle 3d larger than the width W2 of the work B and to form the nozzle length H1 of the nozzle 3d in the vertical direction to the ground surface of the work B to be 1/2 or more of the height H2 of the side portion B2 of the work. . According to such a configuration, the high-pressure water L can be jetted onto the entire surface of the work B. As shown in FIG. Furthermore, by setting the angle of the injection hole 3e to 30 to 45°, the high-pressure water L can be injected to the grounding point (circle) of the work side portion B2.
In addition, the position (height, width, etc.) and angle of the nozzle can be changed according to the surface shape of the work B (flatness, unevenness, screw grooves, etc.).

The rotation drive section 4 is for rotating the rotating body 3b of the cleaning unit 3. As shown in FIG. A commercially available air motor or the like is used. As shown in FIG. 4 , the rotary drive section 4 has a rotary shaft 4 a that rotates as the rotary drive section 4 is driven, and a connecting portion 4 b that connects the rotary shaft 4 a and the washing unit 3 . The connecting portion 4d is configured to rotate the inside of the cleaning unit 2 including the nozzle 3d by transmitting the rotation of the rotating shaft 4a to the rotating body 3b using a belt or the like. Alternatively, a method of transmitting rotation using a single gear or a plurality of gears may be used.

The moving part 5 is for moving the cleaning unit 3 and the rotation driving part 4 in the extending direction of the rotating shaft. When the workpiece B exists on the lower surface of the up, down, left, and right directions, the cleaning apparatus 1 for protrusions is placed downward. Adjust the position of the unit 3 (nozzle 3d) (see FIG. 1, for example).
In addition, when the work B is present on the horizontal surface of the vertical and horizontal directions, the protrusion cleaning apparatus 1 is placed sideways. In this case, the moving unit 5 moves in the horizontal direction. This adjusts the position of the cleaning unit 3 (nozzle 3d) (see FIGS. 4 and 5, for example).

As shown in FIG. 4, the moving part 5 is arranged in the main body 2 of the protrusion cleaning device 1 and has an internal space 5a. An air chamber 5b to which air is supplied from an air supply source A and a piston 5c that partitions the air chamber 5b are arranged in the internal space 5a. By adjusting the amount of air in the air chamber 5b, the position of the piston 5c is changed, and as a result, the main body 2 of the cleaning device 1 for protrusions is moved. Also, the piston 5c is connected to the casing 6 by a support portion 5d. The moving part 5 may have any structure as long as it moves the cleaning unit 3, and may be a moving mechanism using a ball screw, a moving mechanism using a guide rail, or the like.

The casing 6 encloses the work (B) and forms a highly airtight washing space. The casing 6 is connected to the front portion of the main body 2 of the cleaning device 1 for protrusions, and has a bottomed cylindrical shape, polygonal shape, or the like with one end closed. placed.
Note that a magnet may be installed at the tip of the casing 6 when the protrusion cleaning apparatus 1 is installed on a steel frame or the like. The magnets are preferably arranged uniformly on the circumference of the peripheral portion 6 a of the casing 6 . With such a configuration, it is possible to obtain a support function for adhering the protrusion cleaning device 1 .

Further, as shown in FIGS. 2A and 2B, the casing 6 has a peripheral edge portion 6a extending outward at the tip of the casing 6, and has a brush 6b so that the inside of the casing 6 is airtight. can improve sexuality. The height of the brush 6b should be at least higher than the height of the workpiece B.

The cleaning device 1 for projections can be configured as an installation type as shown in FIG. It is also possible to adopt a form in which a handle 7 is provided on the main body 2 of the cleaning device 1 for the parts.

In addition, by providing a discharge portion 8 that is connected to the casing 6 and discharges the high-pressure water L after cleaning to the outside, it is possible to simplify the disposal of the waste liquid. As shown in FIG. 1 , the discharge part 8 has a suction device (not shown) on the outside and is connected to the inside of the casing 6 .

Further, the cleaning unit 3 is arranged so as to pass through the casing 6 and is moved up and down by driving the moving part 3 . A sealing member 11 (see FIG. 2) may be arranged inside or outside the casing 6 of the washing unit 3 so that the high-pressure water L after washing does not leak from the gap between the washing unit 3 and the casing 6 during such lifting. can. The sealing member 11 has a structure capable of maintaining the sealing performance while maintaining the slidability of the cleaning unit 3 .

In addition, the control device 9 (see FIGS. 4 and 5) is arranged, and the amount of air supplied from the air supply source A (the number of rotations of the rotary drive unit 4, the amount of elevation of the moving unit 5), the amount of air from the high pressure water supply source P The amount of high-pressure water L to be supplied can also be controlled. In this case, the operation panel (not shown) for setting the numerical value of the control device 9 can be directly operated manually, or the tablet terminal 10 (see FIGS. 4 and 5) and the operation panel (not shown) can be interlocked separately. It can also be configured and operated remotely.

Next, a projection cleaning method according to the present embodiment will be described.

(Protrusion cleaning method)
As a concrete workpiece B, a case of cleaning a workpiece having projections such as a bolt and a nut will be described. Bolts and nuts include cases where washers are provided between them. As shown in FIG. 3, the work B has a work tip B1 on the top and a work side B2 on the side. In addition, the member having the protrusion is not limited to the bolt or nut, and may be another member. For example, a member with an anchor protruding from the flat surface, a member with a simple stepped portion or unevenness without bolts or nuts, or a protrusion formed by fixing a block-shaped part to the flat surface. It may be a member.

First, the casing 6 is positioned so as to surround the work B. As shown in FIG. Next, high-pressure water L is supplied from the high-pressure water supply source P into the cleaning unit 3, and the high-pressure water L is jetted from the nozzle 3d to clean the workpiece tip B1 of the workpiece B (see FIG. 3(a)). .
At the initial position of the cleaning unit 3 (nozzle 3d), the distance from the work B is sufficiently large, so that the high-pressure water L jetted from each of the first injection hole 3e1 and the second injection hole 3e2 crosses. As a result, the crossed high-pressure water L collides with the workpiece tip B1 to clean the center of the workpiece tip B1. Further, when the moving part 5 is activated by supplying air from the air supply source A, the position of the cleaning unit 3 moves downward, and the high-pressure water L does not cross, but it Wash in the opposite direction. Further, when the moving part 5 is activated by supplying air from the air supply source A, the position of the cleaning unit 3 moves downward to clean the screw groove on the side surface of the workpiece tip B1.
At this time, by driving the rotary drive unit 4, the rotating body 3b in the cleaning unit 3 rotates, and the tip end portion B1 of the workpiece can be cleaned while rotating the nozzle 3d. When the nozzle 3d is rotated in this manner, the high-pressure water L is jetted along the thread groove formed in the circumferential direction of the side surface of the front end portion B1 of the work when the work is a bolt or nut. Therefore, even the inside of the groove can be appropriately cleaned.

Next, by supplying air from the air supply source A, the moving part 5 is activated and the position of the cleaning unit 3 is moved to the side closer to the work side portion B2 of the work B. As shown in FIG. Then, the high-pressure water L is jetted from the nozzle 3d to wash the front surface of the work side portion B2 of the work B (see FIG. 3(b)).

After the cleaning work is completed, the cleaning unit 3 is returned to its original position by removing the air from the air chamber 5b. Further, the supply of high-pressure water L from the high-pressure water supply source P is stopped.

After cleaning the projecting portion B1 of the work, the cleaning unit 3 and the nozzle 3d are moved to the side closer to the side portion B2 of the work by driving the moving portion 5, and the side portion B2 of the work is cleaned to remove projections such as bolts. It is possible to wash the entire surface of the work B that has.
In addition, although the surfaces of the front end portion B1 and the side portion B2 of the work may be flat, they are often uneven or grooved. Since it was not possible to perform fine cleaning up to this point, the cleaning time can be made more efficient than before.

In addition, if the expected cleaning accuracy cannot be obtained in the process of cleaning the workpiece B in order from the workpiece front end B1 to the workpiece side portion B2, the cleaning unit 3 is repeatedly moved up and down by the moving part 5. It is also possible to reciprocate and clean the work B.
Furthermore, the timing of the vertical movement of the cleaning unit 3 by the moving part 5 (elevating and lowering at a uniform time, combining stoppage and elevation, etc.) can be appropriately set according to the situation of the workpiece B.

Further, as shown in FIG. 1, there are many cases where a plurality of workpieces B (bolts, nuts, etc.) are present not only in one place, but also on a wall surface or a floor surface. In such a case, the protrusion cleaning apparatus 1 may be configured to be movable in the front, rear, left, and right directions by arranging a transport mechanism.

Furthermore, as shown in FIG. 6, the horizontal protrusion cleaning apparatus 1 can be installed on the XY axis moving mechanism 20 and remotely operated. The moving mechanism 20 includes a vertical guide rail 21 and a horizontal guide rail 22 installed on the vertical guide rail 21 so as to be able to move up and down. The horizontal guide rail 21 is lifted and lowered by an elevating mechanism 23 that elevates along the vertical guide rail 22 . The protrusion cleaning device 1 is attached to a traversing mechanism 24 that traverses along the lateral guide rail 21 and traverses along the lateral guide rail 21 . The vertical guide rail 21 is fixed to the wall surface to be cleaned, the ground on which the building having the wall surface is built, or the like. The protrusion cleaning device 1, the lifting device 23, and the traversing device 24 are remotely controlled by, for example, a tablet terminal (not shown).

As described above, the present invention is not limited to the above-described embodiments, and it goes without saying that the present invention can be modified as appropriate without departing from the scope of the invention.

REFERENCE SIGNS LIST 1 cleaning device for projections 2 main body 3 cleaning unit 3a cleaning unit main body 3b rotating body 3c high-pressure water supply path 3d nozzle 3e injection port 4 rotary drive section 4a rotating shaft 4b connecting section 5 moving section (air cylinder)
5a Internal space 5b Air chamber 5c Piston 5d Support part 6 Casing 6a Peripheral part 6b Brush 7 Handle 8 Discharge part 9 Control device 10 Tablet terminal P High-pressure water supply source A Air supply source L High-pressure water B Bolt B1 Bolt protrusion B2 Bolt side Department

Claims (7)

a cleaning unit that jets high-pressure water;
a rotary drive unit connected to the cleaning unit;
a moving unit that moves the cleaning unit and the rotation driving unit;
a casing disposed in front of the main body of the cleaning device for protrusions and surrounding the workpiece to be cleaned,
The cleaning unit has a plurality of injection holes for injecting the high-pressure water toward the inner side of the workpiece, in a nozzle arranged at the tip of the cleaning unit. 2. The moving part according to claim 1, wherein the moving part has an air chamber to which air is supplied from an air supply source, a piston that partitions the air chamber, and a support part that supports the piston on the casing. Cleaning apparatus for protrusions as described. 3. The cleaning device for protrusions according to claim 1, wherein the rotary drive section has a rotary shaft that rotates as the rotary drive section is driven, and a connection section that connects the rotary shaft and the cleaning unit. . 4. The protrusion according to any one of claims 1 to 3, wherein the cleaning unit has, in a cleaning unit main body, a rotating body connected to the rotary drive section, and a high-pressure water supply path for supplying the high-pressure water. cleaning equipment. 5. The cleaning device for protrusions according to claim 1, wherein said casing has a peripheral edge extending outwardly at the tip of said casing, and has a brush. 6. The cleaning device for protrusions according to claim 1, further comprising a discharge section connected to said casing for discharging high-pressure water after cleaning to the outside. A protrusion cleaning method using the protrusion cleaning apparatus according to claim 1,
A protrusion cleaning method comprising: cleaning a protrusion at a front end of a workpiece to be cleaned, and then cleaning a lateral portion of the workpiece by moving the cleaning unit and the nozzle to the base end side of the workpiece by driving the moving section.

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