JP3501869B2 - Method and apparatus for cleaning cylindrical or cylindrical body - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for cleaning the surface of a cylindrical body or a cylindrical body, and particularly to a method suitable for precision cleaning which requires high uniformity on the surface of an object to be cleaned. And the device.

[0002]

2. Description of the Related Art Generally, in the case of industrially precision cleaning a cylindrical body or a columnar body, as shown in FIG.
Are arranged so that the central axis 2 is in the vertical direction, and the central axis 2
While rotating about the axis, the cylindrical scrubbing cleaning material 3 which is substantially longer than the object to be cleaned 1 is arranged so that the central axis 4 thereof is the same as the central axis 2 of the object to be cleaned 1 in the vertical direction. In this case, a rubbing cleaning method is used, in which the central shaft 4 is contact-rotated around the shaft to continuously supply the cleaning liquid to the contact portion.

The reason why the rotary shaft is set to the vertical direction is that the liquid to be cleaned is drained well, the adhesion of dust after cleaning is suppressed, and the transport mechanism can be simplified. A brush, sponge, cloth or the like is used as the rubbing cleaning material.

[0004]

When the rotation axes of the object to be cleaned and the scrubbing cleaning material are substantially parallel to each other, the specific part of the scrubbing cleaning material is selectively applied to the specific part of the cleaning object. Contact with the cleaning material causes a problem that unevenness on the side of the cleaning material is transferred to the object to be cleaned. That is, in a commonly used cleaning device, the rotation axes of the object to be cleaned and the rubbing cleaning material are often not parallel in a strict sense,
The pressure distribution of the cleaning material may be rubbed in the rotation axis direction of the object to be cleaned, resulting in uneven cleaning.

Further, for example, when a brush is used as a scrubbing cleaning material, in a strict sense, it is not generally taken into consideration that the density of the brush to be planted and the lengths of the bristles in each portion are taken into consideration. It is unavoidable that a pressure distribution is generated in the direction of the rotation axis, and problems such as uneven cleaning or scratches on the object to be cleaned easily occur at locations where the contact pressure is high.
Of course, these problems can occur with scrubbing cleaning materials other than brushes.

Further, in practice, the size and shape of the object to be cleaned are not always the same, and when different materials to be cleaned are cleaned, abrasion of the cleaning material occurs unevenly in the rotation axis direction, which also causes uneven cleaning. Is likely to occur. If a scrubbing cleaning material that takes this problem into consideration is created, the scrubbing cleaning material must be at least as long as the longest object to be cleaned, and that the entire contact surface must be uniform. Therefore, a considerable amount of technology and great care are required in manufacturing, which increases the cost, but this is not suitable as a consumable item. In addition, the fact that defects due to wear or the like only partially occur makes it unusable also contributes to the cost increase.

In addition to the above, when the rotation axis direction of the scrubbing cleaning material is close to vertical, the cleaning liquid flowing down along with the dirt on the material to be cleaned accumulates at the bottom of the scrubbing cleaning material, thereby cleaning the scrubbed material.
A wide variety of problems are occurring, such as the problem of recontamination of things . That is, with the conventional cleaning method as described above, it is practically difficult to uniformly clean the cylindrical body and the cylindrical body, and development of a new cleaning system has been desired.

[0008]

The inventors of the present invention have made diligent studies on a novel precision cleaning method for solving these problems, and as a result, have found that, with respect to the rotating shaft of a cylindrical or cylindrical object to be cleaned, By arranging the rotation axis of the scrubbing cleaning material in a geometrical twist relationship or a positional relationship intersecting with each other, and moving the scrubbing cleaning material relatively in the rotation axis direction of the object to be cleaned while rotating in contact with each other, the problem The inventors have found that the point can be overcome and uniform precision cleaning can be realized, and the present invention has been achieved.

Accordingly, the present invention is a method of cleaning rubbing table curved cylindrical member or cylindrical member to be cleaned, Medium
An axis in which a cylindrical body or a columnar body whose central axis is oriented substantially in the vertical direction is rotated about its central axis, and the scrubbing cleaning material is geometrically substantially twisted with respect to the central axis. The cleaning method is characterized in that the rotating body is rotated about a rotation axis, and is moved downward relative to the rotation axis direction of the cylindrical body or the cylindrical body while being in contact with the surface curved surface of the cylindrical body or the cylindrical body. It is what

[0010] The present invention is its cylindrical body to be cleaned
Means for gripping the inner surface from one side with the central axis of substantially vertical direction and rotating with the central axis of the object to be cleaned as a rotation axis, and the rubbing cleaning material geometrically substantially twisted with the central axis. Of the cylindrical body provided with means for rotating the related shaft as the rotation axis and means for moving the scrubbing cleaning material relatively downward in the rotation axis direction of the cylindrical body while contacting the surface curved surface of the cylindrical body. The gist is an apparatus for rubbing and cleaning the front curved surface.

The details of the present invention will be described below.
FIGS. 1 and 2 are explanatory views showing an embodiment of the present invention. In FIGS. 1 and 2, 1 is a cylindrical or columnar object to be cleaned, 2 is a rotation axis of the object to be cleaned, and 3 is a rub. Cleaning material, 4
Is a rotation axis of the scrubbing material, 5 is a relative moving direction of the scrubbing material, and 6 is a contact portion.

The object to be cleaned shown in 1 of FIGS. 1 and 2 is constrained by the gripping mechanism at the inside or the end when the shape is a cylindrical body, and at the end when the shape is a cylindrical body. Two
No. 2 is rotated by an external drive mechanism with the central axis of the object to be cleaned as a rotation axis. In the conventional cleaning method shown in FIG. 3,
Since the object to be cleaned is rubbed by the cleaning material over the entire busbar, it is necessary to support both ends of the object to be cleaned. However, in the cleaning method of the present invention shown in FIGS. 1 and 2, the cleaning site is limited. Therefore, the force applied to the object to be cleaned is weak, and it is possible to support only from one end side, and there is an advantage that the mechanism can be simplified.

The material of the scrubbing cleaning material shown in 3 of FIGS. 1 and 2 is substantially softer than the object to be cleaned and deforms at the contact portion to give a physical cleaning power.
For example, brushes, sponges and the like are preferable as they are cost-effective and easy to manufacture. The shape of the scrubbing cleaning material is preferably rotationally symmetrical about the rotation axis 4 in FIGS. 1 and 2. The size is substantially smaller than the object to be cleaned,
The diameter D of each part in the rotation axis direction is D ≦ 10c at the maximum part.
It is desirable that m and the length L in the direction of the rotation axis are L ≦ 10 cm because the structure of rotation or movement is not complicated.

The scrubbing cleaning material is rotated by an external drive mechanism. By reducing the size of the scrubbing cleaning material as described above, high-speed rotation can be realized and the processing speed can be improved. The rotation speed is determined to be an appropriate value in consideration of various conditions such as the required cleaning processing speed, the influence on the surface of the object to be cleaned, and the abrasion of the scrubbing cleaning material. The direction of rotation of the scrubbing cleaning material is
It is more desirable to set the sweep direction of the scrubbing cleaning material to be substantially downward in the vertical direction at the contact portion with the object to be cleaned in order to prevent redeposition of dirt.

In FIG. 1, the two axes of 2 and 4 are geometrically spatially twisted, but at the contact portion, the moving direction of the object to be cleaned and the moving direction of the scrubbing material intersect so that scrubbing and cleaning are performed. From the idea that cleaning unevenness due to material inhomogeneity can be suppressed, the angle formed by the two axes is substantially 90 °.
It is preferable that In FIG. 2, the two axes of 2 and 4 may cross each other, but by making the moving direction of each part of the scrubbing cleaning material in the contact portion complicated, it is possible to suppress uneven cleaning due to the nonuniformity of the scrubbing cleaning material. From that idea,
It is preferable that the angle formed by the two axes is substantially 90 °.

The relative movement direction of the scrubbing cleaning material shown in 5 of FIGS. 1 and 2 is parallel to the rotation axis of the object to be cleaned in 2 of FIGS. 1 and 2, and the rubbing cleaning material and the object to be cleaned are substantially disposed. Since they are always kept equidistant from each other, a uniform contact state can be obtained regardless of the site. Industrially, it is more realistic and preferable to move the side to be cleaned, but it is also possible to move the side to be scrubbed with cleaning material, or to move both the surface to be cleaned and the material to be scrubbed.

The relative movement process is such that at least the contact portion includes one end to the other end in the rotational axis direction of the object to be cleaned. The direction of relative movement is preferably determined so that the cleaning material rubs against the object to be cleaned and is substantially vertically downward. The relative movement speed V is set so that the non-contact portion does not exist in the object to be cleaned, that is,
Set the maximum value of the contact surface of the object to be cleaned in the direction of the rotation axis to 1
Then, when the rotation speed of the object to be cleaned is ω, it is preferable to set it in a range of V <1ω. However, when a special movement method such as rocking is used, the speed may be out of the regulation range.

[0018] Incidentally, when one washing process the rubbing cleaning process from one end to the other one end of the object to be cleaned, processing count is to basically one, may also be a plurality of times processing Absent. Even when the treatment is performed a plurality of times, it is preferable to repeat the rubbing cleaning material and the body to be cleaned so that the relative movement direction is downward in the vertical direction rather than reciprocating. However, in consideration of productivity, the reciprocating motion may be such that the final time is downward in the vertical direction.

It is preferable to supply a cleaning liquid to the contact portion between the scrubbing cleaning material and the object to be cleaned shown in 6 of FIGS. 1 and 2, and it is preferable that the liquid supply is substantially continuous, but a dry system is also used. Intermittent supply may be carried out as necessary. As a method of supplying the cleaning liquid, there are a method of selectively supplying to the cleaning site and a method of cleaning by placing the contact site in the cleaning liquid, but the former supply method is preferable for preventing redeposition of stains, and further cleaning It is more preferable that the cleaning liquid is supplied from above the portion so that the flow of the cleaning liquid is substantially vertically downward. Incidentally, the water as the cleaning liquid to be used, aqueous detergents, organic detergents, and organic solvent agents and the like, not limited thereto.

[0020]

The present invention will be described in detail below with reference to examples, but the present invention is not limited to these examples. Since it is difficult to quantitatively evaluate and compare the degree of uniform cleaning, it is caused by performing a dry rubbing cleaning operation using a material to be cleaned that is substantially harder than the material to be cleaned. The degree of cleaning uniformity was evaluated by visually observing the scratch uniformity.

The object to be cleaned has a diameter of 30 mm and a length of 2
A mirror-cutting circular tube made of A6063 having a thickness of 62 mm and a thickness of 1 mm was used. A conventional cleaning method is shown in FIG. Both ends of the object to be cleaned 1 are gripped by the grippers 7 and are rotated by the external drive device 8 with the central axis as the rotary shaft 2, and the cylindrical scrubbing cleaning material 3 is rotated by the external drive device 9 with the central axis as the rotary shaft 4. Rotate. The object to be cleaned 1 and the scrubbing cleaning material 3 are in contact with each other while their rotating shafts 2 and 4 are oriented in the vertical direction and are kept substantially parallel to each other. Here, the cleaning material 3 is a nylon brush, the brush wire diameter is 80 μm, the brush outer diameter is 52 mm, the bristle length is 18 mm, the brush portion length is 375 mm, the brush rotation speed is 50 rpm, the contact margin is 5 mm, and the circular pipe is used. Rotation speed is 5r
pm.

The cleaning method shown in the present invention is shown in FIG. The to-be-cleaned object 1 is held by an inner expansion type gripping tool 7, and is rotated by an external drive device 8 with a central axis as a rotary shaft 12 , and a cylindrical scrubbing cleaning material 3 is rotated by an external drive device 9 at the central axis. The direction of 10 as 4, that is, the sweep direction at the contact portion rotates downward in the vertical direction. Here, the respective rotary shafts 12 and 4 are in a twisted positional relationship such that the angle between them is substantially 90 °. The object to be cleaned 1 moves in a direction 11 from the lower side to the upper side of the scrubbing cleaning material 3 while rotating, and comes into contact with the scrubbing cleaning material 3. Here, the moving direction 11 of the object to be cleaned 1 is parallel to the rotation axis 12 thereof. Here, the scrubbing cleaning material 3 is a cylindrical rotating brush made of polypropylene, the brush wire diameter is 200 μm, and the brush outer diameter is 80 m.
m, brush length 80 mm, brush rotation speed 500 r
pm, the contact margin is 5 mm, the circular tube rotation speed is 240 rpm, and the circular tube pull-up speed is 10 mm / sec.

According to these conditions, the dry washing operation is carried out in two steps.
After performing 6.2 seconds, that is, one pass in the apparatus of FIG. 5, visually observing how the surface of the object to be cleaned is scratched under a fluorescent lamp showed that the object to be processed obtained by the conventional cleaning method was Although unevenness in the density of scratches was observed at each site in the direction of the rotation axis, the product obtained by the method according to the present invention has uniform distribution of scratches regardless of the site, and the desired effect is obtained. It turned out to be.

[0024]

The cleaning method for implementation in the present invention, problems of the conventional cleaning method described above it is possible to solve. That is, by scanning the entire surface of the object to be cleaned while keeping the contact state of the substantially same portion of the cleaning material to be constant,
Uniform cleaning of the surface of the object to be cleaned can be realized.

Further, as a secondary effect, a small and light rubbing cleaning material can be used as compared with the conventional method, resulting in excellent cost and high speed rotation of the rubbing cleaning material.
The centrifugal force near the contact surface improves the physical cleaning power and the self-cleaning effect of the scrubbing cleaning material itself.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of an embodiment of the present invention.

FIG. 2 is an explanatory diagram of another embodiment of the present invention.

FIG. 3 is an explanatory diagram of a conventional cleaning device.

FIG. 4 is a schematic view of a conventional cleaning device.

FIG. 5 is a schematic view of a cleaning apparatus according to an embodiment of the present invention.

[Explanation of symbols]

1 to-be-cleaned 3 Scrub cleaning material 7 gripping tool

Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B08B 1/00

Claims (9)

(57) [Claims] 1. In a method of rubbing and cleaning a surface curved surface of a cylindrical body or a cylindrical body which is an object to be cleaned, the central axis is substantially
A cylindrical body or a columnar body oriented in the vertical direction is rotated about its central axis, and the scrubbing cleaning material is rotated about an axis that is geometrically substantially twisted with respect to the central axis. The cleaning method is characterized by moving the cylindrical body or the cylindrical body relatively downward in the direction of the rotation axis of the cylindrical body or the cylindrical body while contacting the surface of the cylindrical body or the cylindrical body. 2. The cleaning method according to claim 1, wherein the rotational axis of the cylindrical body or the cylindrical body which is the object to be cleaned and the rotational axis of the scrubbing cleaning material intersect geometrically. 3. The cleaning according to claim 1 or 2, wherein the sweep direction of the scrubbing cleaning material at a contact portion between the scrubbing cleaning material and a cylindrical body or a cylindrical body which is the object to be cleaned is substantially downward in the vertical direction. Method. 4. The cleaning method according to claim 1, wherein the cleaning liquid is rubbed toward the contact portion and supplied from above the cleaning material. 5. The center axis a cylindrical body to be cleaned
A means for gripping the inner surface from one side in the substantially vertical direction and rotating the center axis of the object to be cleaned as a rotation axis, and a rubbing cleaning material in a geometrically substantially twisted relationship with the center axis. The surface of the cylindrical body is rubbed with a means for rotating the surface of the cylindrical body and a means for moving the scrubbing cleaning material relatively downward in the direction of the axis of rotation of the cylindrical body while bringing the cleaning material into contact with the surface of the cylindrical body. Equipment for cleaning. 6. The apparatus according to claim 5, wherein the rotation axis of the cylindrical body which is the object to be cleaned and the rotation axis of the scrubbing material intersect geometrically. 7. The apparatus according to claim 5, wherein the scrubbing cleaning material is a brush. 8. The apparatus according to claim 5, further comprising means for supplying the cleaning liquid toward the contact portion between the cylindrical body and the scrubbing cleaning material from above the scrubbing cleaning material. 9. A means for moving a vertical axis of a cylindrical body, which is an object to be cleaned, vertically holding the central axis substantially vertically and holding the inner surface from one side , and rotating the central axis as a rotation axis, and a cylindrical shape. Cylindrical shape that has a scrubbing cleaning material that rotates while contacting the surface of the body
A device that scrubs and cleans the surface of a cylindrical body that is designed to be taken out upwards .