JPH05203954A - Method for washing roll-shaped brush - Google Patents

Abstract

PURPOSE:To highly accurately wash a roll-shaped brush and to simplify the washing process. CONSTITUTION:Pure water and steam are blown on a brush member 2 with fibers 4 implanted in the cylindrical body 3 while rotating the member 2 to raise the fibers 4 as well as to remove foreign matter sticking to the member 2 by washing. The brush member 2 is then perfectly dried with warm air under rotation to fix the raised state of the fibers 4. Thus, a rubbing roll is produced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for cleaning a roll-shaped brush such as a rubbing roll used in a rubbing process for manufacturing a liquid crystal display device.

[0002]

2. Description of the Related Art In manufacturing a liquid crystal display device, a rubbing process is performed as an example of an alignment process for a liquid crystal.
A roll called a rubbing roll as shown in 822.
Rubular brush is used. This rubbing roll
This is a roll-shaped brush in which fibers are planted in the radial direction with respect to the tubular body, and as an example, a woven warp of a synthetic resin material is used. Rubbing roll, foreign matter such as dust and paper powder is easily attached to the fabric due to oil and fat such as surfactants used until the production of this fabric, which shortens the service life. When the rubbing roll is used for the rubbing treatment, fine powder of the alignment film which is the target of the rubbing treatment adheres.

[0003]

As described above, the rubbing roll is appropriately cleaned during the manufacturing process or use since foreign substances adhere to the rubbing roll during the manufacturing process or use. Conventionally, this cleaning treatment has been performed by a dobbing method in which a rubbing roll is immersed in a cleaning tank that stores pure water. In such a conventional technique, foreign matter separated from the rubbing roll at the time of cleaning may float in the cleaning tank to cause reattachment of the foreign matter, and the concentration of the foreign matter in the cleaning tank and the concentration of the foreign matter in the cleaning tank may be changed every time the rubbing roller is cleaned. The local distribution changes. That is, it is difficult to maintain and manage the cleanliness of the cleaning tank, and there is a problem in that the cleaning degree of the rubbing roll varies.

By immersing the rubbing roll in pure water, the fibers that have been hair-implanted become wet, and the fibers completely fall asleep when pulled up. As a result, there is a problem that the drying process in the latter stage takes time and the required time for the entire rubbing roll manufacturing process becomes long, and as described above, the wet and completely laid fibers are again raised. It is difficult to carry out only by the drying process, and in addition, there is a problem that a mechanical raising device is required and the manufacturing process becomes complicated.

An object of the present invention is to solve the above technical problems and to provide a method for cleaning a roll-shaped brush, which can clean the roll-shaped brush with high accuracy and can simplify the cleaning process. It is to be.

[0006]

SUMMARY OF THE INVENTION The present invention is a method for cleaning a roller brush in which fibers are flocked in a radial direction with respect to a cylindrical body. A method for cleaning a roller brush, comprising: a step of spraying pure water vapor while rotating the brush member; and a step of drying with warm air while rotating the brush member.

[0007]

According to the present invention, when the roller brush is washed, pure water vapor is jetted to the brush member having fibers on the shaft portion thereof while rotating the brush member to inject the pure water vapor. A cleaning process for removing foreign matters adhering to the fiber and a fiber raising process are simultaneously performed. After washing, the brush member is rotated and dried with warm air, and the fibers are completely raised.

Therefore, since the roll-shaped brush is always washed with clean pure water, re-adhesion of foreign matter does not occur, and the cleaning degree of the roll-shaped brush is made uniform with high accuracy. You can In the present invention, the technique of immersing the roll-shaped brush in pure water is avoided, and the pure water vapor is sprayed while the brush member is rotationally driven. That is, even if the fibers that have been flocked are wet with steam, it is possible to avoid the situation in which the fibers completely lie down when the roll-shaped brush is pulled out from the cleaning tank as described in the conventional example, and the time of the subsequent drying step is reduced. Can be shortened and the time required for the entire cleaning process of the roll-shaped brush can be shortened. Further, in the present invention, while the fibers are wet with steam in the cleaning step, the fibers are kept raised by the centrifugal force due to the rotation of the brush member, and pure water vapor is sprayed in this state so that the fibers are surely raised. Therefore, the manufacturing process can be simplified.

[0009]

1 is a systematic diagram of a cleaning apparatus 1 used in an embodiment of the present invention. The washed rubbing roll RL is a member used in a rubbing process performed as an example of an alignment process for liquid crystals when a liquid crystal display device is manufactured. Is a roll-shaped brush obtained by cleaning the brush member 2 in which the rubbing cloth 4a on which the bristles are wound is wound. This fiber 4 uses, as an example, a warp of a woven fabric made of a synthetic resin material
Due to oils and fats such as surfactants used until the production of this woven fabric, foreign matters such as dust and paper powder are easily attached to the fibers 4 during the production process of the rubbing roll 2, and the rubbing roll is also produced. When 2 is used for the rubbing treatment,
Fine powder of the synthetic resin film, which is the target of the rubbing process, adheres. Therefore, the cleaning method of the present embodiment is carried out in the manufacturing process of the rubbing roll 2 for cleaning the foreign matter adhering to the fibers 4 and also for cleaning after the rubbing process for reuse. Is done. In the following examples, the cleaning during the manufacturing process of the rubbing roll 2 will be described.

The cleaning device 1 supports the cylindrical body 3 of the brush member 2 at both ends in the axial direction, and a pair of support members 5 for rotationally driving the brush member 2 by power from a driving device such as a motor (not shown). 6 is provided. Further, as will be described later, a plurality of nozzles 7 for spraying pure water vapor onto the brush member 2 which is rotationally driven, and a duct 8 for connecting the nozzles 7 and supplying pure water vapor from a supply source (not shown) are provided. An injection member 9 is provided. Further, a nozzle 13 for warm air that blows warm air is arranged on the brush member 2 that is rotationally driven, as described later.

FIG. 2 is a process chart showing a manufacturing process of the rubbing roll 2. In step a1, the rubbing cloth 4a is wound around the cylindrical body 3 shown in FIG. In step a2, the fibers 4 of the rubbing cloth 4a are raised, and in step a3, shirring is performed. In step a4, the brush member 2 is rotationally driven to spray pure water vapor onto the brush member 2 from each nozzle 7 of the injection member 9 to wash and brush the brush member 2. At this time, the brush member 2 is in a rotationally driven state. The jetted pure water vapor cleans the fibers 4 of the brush member 2, and the foreign matter removed from the fibers 4 is caused by the rotation of the brush member 2 together with the purified water after the vapor is condensed to become a liquid. It is shaken off by centrifugal force. That is, the brush member 2 is always washed with pure water.

Moreover, the fibers 4 are kept raised by the centrifugal force, and as described in the section of the prior art, the fibers lie down when the brush member immersed in the cleaning tank is pulled up. Is prevented. Further, since the pure water vapor is sprayed onto the brush member 2, it is in a so-called steam-applied state and the fiber 4 can be raised.

In step a5, the spraying of the pure water vapor from the nozzle 7 is stopped, and the brush member 2 is rotationally driven while the nozzle 13 blows warm air onto the brush member 2. The brush member 2 after the injection of pure water vapor has been stopped is so-called centrifugal dehydration, and the fibers 4 dehydrated to a predetermined extent.
On the other hand, complete drying with warm air is performed. This allows
The fibers 4 are held and fixed in the raised state achieved in step a4. In step a6, the brazing roll RL is removed from the support members 5 and 6, and an inspection is performed. Then, in step a7, the product is assembled to other components necessary for the rubbing treatment.

Since the rubbing roll RL manufactured in this manner is always washed with clean pure water, it does not cause reattachment of foreign matter as compared with the conventional example in which the rubbing roll RL is immersed in a washing tank. The cleaning degree of the brush member 2 can be made uniform with high precision. In this embodiment, the technique of immersing the brush member 2 in pure water is avoided, and pure water vapor is sprayed while the brush member 2 is rotationally driven. That is, even if the fibers 4 get wet with pure water vapor, it is possible to avoid the situation that the fibers completely lie down when the brush member is pulled out from the cleaning tank as described in the conventional example, and to shorten the time of the subsequent drying process. Therefore, the time required for the entire cleaning process of the brush member 2 can be shortened, and the manufacturing process can be simplified.

Further, in the cleaning process of this embodiment, the fibers 4 are kept wet while being wet with pure water vapor due to the rotation of the brush member 2. Since pure water vapor is sprayed in this state, it is possible to completely raise the hair, and also in this respect, the manufacturing process can be simplified. Further, the processes up to the steps a4 and a5 can be continuously and automatically performed in the same cleaning apparatus 1 shown in FIG. 1, and the workability is remarkably improved.

On the other hand, when the present invention is applied to the cleaning process for reusing the rubbing roll 2 used for the rubbing process in the manufacture of the liquid crystal display device, the process shown in FIG. The steps a4 and a5 may be repeated.

[0017]

As described above, according to the present invention, when cleaning the roller brush, the pure water vapor is applied to the brush member in which fibers are implanted on the shaft portion while rotating the brush member. A cleaning process for removing foreign matter adhering to the brush member by spraying and a fiber raising process are simultaneously performed. After washing, the brush member is rotated and dried with warm air, and the fibers are completely raised.

Therefore, since the roll-shaped brush is always washed with clean pure water, the re-adhesion of foreign matter does not occur, and the cleaning degree of the roll-shaped brush is made uniform with high accuracy. You can In the present invention, the technique of immersing the roll-shaped brush in pure water is avoided, and the pure water vapor is sprayed while the brush member is rotationally driven. That is, even if the fibers that have been flocked are wet with steam, it is possible to avoid the situation in which the fibers completely lie down when the roll-shaped brush is pulled out from the cleaning tank as described in the conventional example, and the time of the subsequent drying step is reduced. Can be shortened and the time required for the entire cleaning process of the roll-shaped brush can be shortened. Further, in the present invention, while the fibers are wet with steam in the cleaning step, the fibers are kept raised by the centrifugal force due to the rotation of the brush member, and pure water vapor is sprayed in this state so that the fibers are surely raised. Therefore, the manufacturing process can be simplified.

[Brief description of drawings]

FIG. 1 is a system diagram of a cleaning device 1 used in an embodiment of the present invention.

FIG. 2 is a process diagram illustrating a cleaning process according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cleaning device 2 Brush member 3 Cylindrical body 4 Fiber 7,13 Nozzle 9 Injection member RL Rubbing roll

Claims (1)

[Claims] 1. A method for cleaning a roll-shaped brush in which fibers are implanted in a radial direction with respect to a shaft portion, wherein a brush member is rotationally driven with respect to a brush member in which fibers are implanted in the shaft portion. A method for cleaning a roll-shaped brush, comprising: a step of spraying pure water vapor; and a step of drying with warm air while rotatingly driving a brush member.