JPH0645102B2 - Surface treatment equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a surface treatment apparatus capable of wiping dirt attached to the surface of various objects such as a hull or a building, polishing or grinding the object surface, or applying a polish or the like to the object surface. .

Conventionally, as a means for performing the surface treatment as described above on the object surface, wiping by moving along a surface while manually pushing a powered hand tool such as a rotating cloth disc or a grindstone against the treated surface by human power, Operations such as polishing, grinding, and application of a surface treatment agent were performed.

However, holding the weight of the hand tool for a long time, and pressing the hand tool against the surface to be treated with a constant force requires a great deal of effort to move the hand tool along the surface. However, there is a drawback that the quality of the surface after treatment varies from worker to worker because there are individual differences.

The present invention, by utilizing the suction force of the suction cup to the object surface, it is not necessary to manually hold the self-weight of the surface treatment apparatus, and also it is not necessary to press the surface treatment apparatus against the object surface manually. The present invention proposes a surface treatment device with reduced labor.

The present invention will be described with reference to the drawings of the first embodiment.
In FIG. 2 and FIG. 2, a rotary shaft 3 perpendicular to the object surface 1 is attached to the center of a disk-shaped suction cup 2, and a soft material, which is a surface treatment material, around the entire circumference of the suction cup 2 4 is installed.

A plurality of blades 21 radially extending in the circumferential direction from the portion where the rotary shaft 3 is attached are formed in a rigid portion of the suction cup 2 around the rotary shaft 3, that is, one rotary blade is formed. Has been done.

Regarding the material of the flexible material 4, when cleaning the dirt on the object surface, woven cloth or non-woven cloth is used. When polishing or grinding the object surface, rubber mixed with abrasive particles is used. When applying an agent or the like, a liquid-containing sponge rubber or the like is used.

The suction cup 2 may be rigid or flexible enough not to deform excessively when it is rotated by the rotating shaft 3.

Although the rotary shaft 3 is not shown, the distance between the object surface 1 and the suction cup 2 can be freely changed by connecting it to a flexible shaft. A drive motor is connected to the flexible shaft.

In the above device, when the rotating shaft 3 is rotated (the rotating direction is the rotating direction in which the blade 21 transfers the liquid in the direction opposite to the object surface 1), the fluid inside the suction cup 2 is operated by the rotating blade. Since the suction cup 2 is discharged to the outside of the suction cup 2, the internal pressure of the suction cup 2 becomes a negative pressure, and the suction cup 2 receives the external pressure B toward the object surface 1 direction.
Can be pressed against.

The soft material 4 is pressed against the surface of the object and the sucker 2 is pressed.
Together with this, the work such as wiping, polishing, grinding or applying a surface treatment agent is performed.

At this time, the soft material 4 is attracted by the suction cup 2 to the surface 1
Since it is pressed against, the pressing operation by human force is unnecessary, and it is also unnecessary to hold the self-weight of the apparatus by manual force due to the friction between the soft material 4 and the object surface 1. However, in order to move the device along the surface of the object, external force such as human power is required.

3 to 7 show that the suction force of the suction cup should be increased,
It is drawing of the Example when the force which a flexible material is pressed on an object surface does not want to be so large.

In this case, the friction between the object surface and the soft material can be reduced, and since the suction force of the suction cup is large, it is possible to run the apparatus on the object surface while adsorbing the device.

The inventor of the present invention has proposed the utility model publication No. 5694, 1982.
No. 3 proposes a technique of traveling on the surface of an object while the suction cup is adsorbed on the surface of the object.

In FIGS. 3 to 5, a rotary shaft 3 is attached to the center of a suction cup 2 that is a rigid body, and the rotary shaft 3 is held in a bearing box 5 via two bearings 6.

A motor 7 for driving the rotating shaft 3 and a frame 8 for holding four wheels 9 are mounted on the bearing box 5, and two motors 10 for driving the four wheels 9 are mounted on the frame. ing.

An annular plate 41 made of a flexible material such as rubber is mounted on the entire circumference of the circumferential portion of the suction cup 2.
1 is further equipped with a flexible material 4 similar to that shown in FIGS.

Incidentally, in the rigid body portion around the rotary shaft 3 of the suction cup 2,
A plurality of blades 21 radially extending in the circumferential direction from the portion where the rotating shaft 3 is attached are formed, that is, one rotating blade is formed.

In the apparatus of FIGS. 3 to 5, when the motor 7 is rotated (the rotation direction is the rotation direction in which the blade 21 transfers the fluid in the direction opposite to the object surface 1), the fluid inside the suction cup 2 The inner pressure of the suction cup 2 becomes lower than the outer pressure because it is discharged to the outside of the suction cup 2 by the action of the rotary vanes, and thus the suction cup 2 receives the external pressure which is pressed toward the object surface 1. That is, the suction force is generated on the suction cup 2.

Since the wheel 9 is mounted on the suction cup 2 via the rotary shaft 3, the bearing 6, the bearing housing 5, and the frame 8, this suction force is a force that pushes the wheel 9 against the object surface 1.

Moreover, since the distance between the suction cup 2 and the object surface 1 is kept constant by the wheels 9, the flexible material 4 and the annular plate 41 are not pressed against the object surface 1 by the suction cup 2, but the fluid inside and outside the suction cup 2 is not pressed. The pressure difference of 2 prevents the external liquid from flowing into the suction cup by being pressed against the object surface 1.

That is, the flexible material 4 and the annular plate 41 have a self-sealing function, and the force pressed against the object surface 1 is increased or decreased by the area that receives the pressure difference between the fluid inside and outside the suction cup 2 regardless of the suction force of the suction cup 2. It can be set arbitrarily.

This means that the friction between the soft material 4 and the object surface 1 can be reduced, and the friction between the wheel 9 and the object surface 1 can be increased, so that the suction cup 2 of the wheel 9 remains attached to the object surface 1. It can drive by itself.

Further, for the above reason, it is not necessary to increase the rotation torque of the suction cup 2, that is, the drive torque of the motor 7.

Note that FIG. 6 shows that the apparatus of FIGS.
Sucker 2, flexible material 4 and annular plate 41 when attracted to the
The state of is illustrated.

FIG. 7 shows that the function of the flexible material 4 in FIG.
1 illustrates a state integrated with one function. That is, in the case of the embodiment of FIG. 7, it is shown that the annular plate 41 can also have a surface treatment function.

The flexible material 4 shown in FIG. 7 extends from the inner end connected to the circumferential portion of the suction cup 2 to the outside of the circumferential portion and in the direction approaching the object surface 1, and reaches the contact portion in contact with the object surface 1. The inner wall portion, the contact portion, the outside of the circumferential portion, and the object surface 1
It has an outer wall portion that extends in a direction away from the outer end portion.

In the flexible material having the shape as shown in FIG. 7, even if there is unevenness on the surface of the object, the contact portion of the flexible material with the surface of the object does not turn over, and the convex material can be easily overcome.

In the embodiment of the present invention described above, as a method of generating a negative pressure in the suction cup by discharging the fluid inside the suction cup to the outside,
Negative pressure is generated in the suction cup by forming the rotary blade on the rigid part of the suction cup and rotating the rotary blade together with the suction cup. For example, various methods such as mounting an ejector on the suction cup are possible, and the method is not limited to the method of the embodiment of the present invention.

FIG. 8 illustrates a state in which the metal fitting 13 with a blade is attached to the outer end of the flexible material 4 of FIG. 7 by the bolt 14.

Conventionally, it is difficult to remove coarse solids such as barnacles adhered to the surface of the submerged hull due to its strong adhesive force. However, since the blade fitting 13 rotates together with the suction cup 2 and the flexible material 4, it becomes coarse. Solids are easily scraped off. The metal fitting 13 with the blade having the above-mentioned function is made of the soft material 4
It is used as a pretreatment for the surface treatment by.

As described above, the surface treatment apparatus of the present invention does not need to manually hold the self-weight of the surface treatment apparatus by using the suction force of the suction cup to the surface of the object, and the surface treatment apparatus is also manually operated. With this, there is an effect that it is possible to reduce human labor without having to press the object surface.

Further, since the pressure with which the surface treatment material is pressed against the surface of the object is constant, there is an effect that the quality of the surface after treatment is uniform.

Furthermore, if the device is of a self-propelled type and can be operated by a remote controller, it is possible to eliminate the need for a dangerous scaffold at a high place and reduce the cost required for temporary scaffolding.

The surface treatment apparatus of the present invention can be put to practical use regardless of the type of fluid, whether the environment in which it is present is air or water.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of the present invention, FIG. 2 is a sectional view taken along the line II in FIG. 1, and FIG. 3 shows an embodiment different from the embodiment of FIGS. 1 and 2. FIG. 4 is a front view of one embodiment of the present invention, FIG. 4 is a left side view of the same, and FIG. 5 is II in FIG.
-II is a sectional view, FIG. 6 is a partially enlarged sectional view showing a state of the flexible material 4 and the annular plate 41 when the suction cup 2 in FIG. 5 is adsorbed on the object surface 1, and FIG. Flexible material 4
FIG. 8 is a partially enlarged sectional view showing a state in which the function of is integrated with the function of the annular plate 41, and FIG. 8 is a partial sectional view showing an embodiment of the present invention. Arrow A: Fluid flow direction, Arrow B: Direction of attraction force, 42: Bolt, 43: Press fitting

Claims (8)

[Claims] 1. A suction cup for adsorbing on the surface of an object by utilizing a differential pressure of a fluid, the suction cup having a rotation axis perpendicular to the surface to be adsorbed in the center thereof, and the entire circumference of the circumferential portion of the suction cup, A flexible material equipped with a sealing function that adheres to the surface to be attracted and prevents fluid from flowing into the suction cup and a surface treatment function that performs processing such as polishing and wiping on the surface to be attracted, and A surface treatment apparatus, wherein a rigid body portion around the rotation axis of the suction cup is formed in a rotary blade shape. 2. A suction cup for adsorbing on the surface of an object by utilizing the differential pressure of a fluid, the suction cup having a rotation axis perpendicular to the surface to be adsorbed at its center, and the entire circumference of the circumferential portion of the suction cup, A soft material with a sealing function that adheres to the surface to be adsorbed and prevents fluid from flowing into the suction cup, and a surface treatment function that performs processing such as polishing and wiping on the surface to be adsorbed, and is also a suction cup. A surface treatment apparatus characterized in that a metal fitting with a blade is attached to an outer end of a flexible material attached to a circumferential portion of the. 3. A flexible material attached to the circumferential portion of the suction cup,
Claim 1 characterized by having a so-called self-sealing structure that prevents fluid outside the suction cup from flowing into the inside by being pressed against the surface to be attracted by the pressure difference between the fluid inside and outside the suction cup. The apparatus according to any one of items 1 to 3. 4. A flexible material attached to the circumferential portion of the suction cup,
An inner wall portion extending from the inner end connected to the circumferential portion of the suction cup to the outside of the circumferential portion and in a direction approaching the attracted surface and reaching a contact portion that comes into contact with the attracted surface, and the circumference from the contact portion. The device according to claim 3, further comprising an outer wall portion extending outside the portion and in a direction away from the surface to be attracted and reaching the outer end thereof. 5. A flexible material attached to the circumferential portion of the suction cup,
In order to prevent the rigid portion of the suction cup from being excessively pressed in the direction of the attracted surface, it is necessary to have a rotating shaft holding mechanism for keeping the distance between the rigid portion and the attracted surface at a predetermined distance. A device as claimed in any one of claims 1 to 4 characterized. 6. A driving means having a plurality of wheels or an endless rail running on the surface to be attracted is mounted via a bearing holding a rotary shaft of a suction cup. The apparatus according to any one of items 1 to 5. 7. Device according to claim 6, characterized in that it is equipped with drive motors for wheels or endless rails. 8. The device according to claim 6, wherein a drive motor for the rotary shaft of the suction cup is mounted on the traveling means.