KR20220071638A - Roller Brush - Google Patents

Abstract

A roller brush includes: a base part composed of a pipe made of a plastic composite material containing carbon fiber; a covering part provided to surround an outer circumferential surface of the base part; a rotation shaft provided at both ends of the base part; and a brush part provided on an outer circumferential surface of the covering part, thereby capable of reducing vibration and noise generated during rotation.

Description

Roller Brush

The present invention relates to a roller brush, and more particularly, to a base part made of a plastic-based composite material containing carbon fiber to significantly reduce the weight compared to a conventional roller brush having the same size, thereby reducing sagging due to load It relates to a roller brush that can reduce vibration and noise generated during rotation and at the same time prevent damage to a cleaning object due to sagging in advance.

As the information society develops, the demand for display devices is also increasing in various forms. In response to this, various flat panel display devices such as LCD, PDP, ELD, and VFD have been studied in recent years, and some are already being used as display devices in various equipment.

In general, substrates for display devices have a thin film layer made of photoresist coating solution, photosensitive polyamide resin, color filter chromosomes, etc. formed on the substrate in the main processing process, and these substrates are loaded into the substrate transport device and moved in one direction to apply the chemical solution. It is subjected to a post-treatment process such as a process, a washing process, and a drying process.

In the manufacturing process of such a flat panel display device, a cleaning process is a process for removing foreign substances and particles on a substrate, and in particular, contaminant particles adhering to the substrate are a main cleaning target. As a cleaning method for removing such contaminant particles, a cleaning method using a brush is widely used. In the cleaning process using a brush, foreign substances are removed from the substrate by rotating the brush while spraying the cleaning solution on the substrate.

7 is a cross-sectional view showing a conventional brush device. The conventional brush assembly is generally configured such that, as shown in FIG. 7 , a brush 1200 wound in a channel form or a belt form is coupled to an outer circumferential surface of a shaft 1100 made of a metal material such as stainless or aluminum.

Meanwhile, as the panel substrate becomes larger, the diameter of the shaft 1100 of the brush assembly increases and the length increases, and the weight of the brush assembly increases.

However, since the conventional shaft 1100 is mainly made of a metal material such as stainless steel, as the diameter and length of the brush assembly increase, the weight also greatly increases, which causes various problems.

For example, as the weight of the brush assembly increases, it is difficult to transport the brush assembly, and there is a problem in that the transportation cost increases.

In addition, as the weight of the shaft 1100 increases, the bending due to its own weight increases, and when the bending due to its own weight is severe, the central side of the shaft 1100, which is the most curved during the substrate cleaning process, is in contact with the substrate and the substrate There is a problem with this breakage.

In addition, as the curvature of the shaft 1100 increases, the vibration of the cleaning device also increases, and the resulting noise also increases. For this reason, there is a problem in that the life of the cleaning device is shortened.

Also, the brush 1200 wound around the outer circumferential surface of the shaft 1100 is generally fixed by fastening screws or bolts B to the ends of the brush 1200 . However, as described above, as the vibration of the shaft 1100 increases, the screws or bolts B for fixing the brush 1200 are loosened by the vibration, and thereby, the brush 1200 is removed. There is a problem in that the fixing screw or bolt (B) is released and the brush 1200 is separated from the shaft 1100 .

KR 0683959 10

The present invention is to solve the conventional problem, and the base part is manufactured with a plastic-based composite material containing carbon fibers to significantly reduce the weight compared to a conventional roller brush having the same size, thereby reducing sagging due to load An object of the present invention is to provide a roller brush that can reduce vibration and noise generated during rotation and at the same time prevent damage to the object to be cleaned due to sagging.

The object of the present invention is not limited thereto, and other objects not mentioned will be clearly understood by those skilled in the art from the following description.

The roller brush for achieving the object of the present invention as described above includes a base part composed of a pipe made of a plastic-based composite material containing carbon fiber, a covering part provided to surround the outer peripheral surface of the base part, and both ends of the base part. It includes a rotating shaft and a brush portion provided on the outer peripheral surface of the covering portion.

In this case, the base part may be made of a carbon fiber reinforced plastic material.

In addition, the coating part may be made of a polyolefin-based compound.

In addition, the coating portion may be provided on the outer peripheral surface of the base portion through any one of a tube, a film, painting, or plating.

In addition, a connection part for assisting the connection between the rotation shaft and the base may be further provided on one side of the connection portion of the rotation shaft and the base portion.

In addition, at least one of the rotation shaft and the connection part may be made of stainless steel.

In addition, both ends of the brush part may be finished using an adhesive.

The roller brush of the present invention has the following effects.

First, since the shaft is manufactured by composing the base part only with carbon fiber reinforced plastic material, there is an effect that the weight is significantly reduced compared to the existing devices made of metal such as stainless steel, and through this, transportation and replacement of the product is easy There is one effect.

Second, although the weight is reduced, there is an effect that the amount of deflection when using the roller brush is remarkably reduced by using a material with superior rigidity and the like.

Third, as the amount of deflection of the roller brush decreases, the probability of occurrence of eccentricity decreases, and thus vibration and noise are also significantly reduced.

Fourth, as the vibration is reduced, the stress transmitted to the roller brush, the power unit, and the peripheral devices is reduced, so that it is possible to reduce the probability of failure such as damage or breakage of the roller brush as well as the peripheral devices.

Fifth, as the amount of deflection of the roller brush is remarkably reduced, the height of the brush is maintained constant over the entire length of the roller brush, so that the entire area of the substrate can be smoothly cleaned.

Sixth, if the height of the brush is kept constant due to the decrease in the amount of deflection, the installation height of the roller brush can be maintained constant. In the case where the cleaning is not performed smoothly in the , and the arrangement height is lowered to facilitate cleaning of both ends, there is an effect of preventing in advance the occurrence of a problem in which one side of the center comes into contact with the substrate and the substrate or the brush is damaged.

Seventh, the brush part is attached through the adhesive over the entire area and at the same time both ends in the longitudinal direction are closed using a silicone adhesive or the like, so that even when the roller brush rotates, it is possible to prevent the brush part from being arbitrarily detached by the rotational force.

Eighth, as the brush part is closed by the adhesive, loosening of washers and bolts due to rotation does not occur, and thus noise does not occur.

The effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

The following drawings attached to this specification illustrate preferred embodiments of the present invention, and serve to further understand the technical spirit of the present invention together with the detailed description of the present invention, so the present invention is limited only to the matters described in those drawings should not be interpreted as
1 is a perspective view of a roller brush according to the present invention;
2 is an exploded perspective view of a roller brush according to the present invention;
3 is a cross-sectional view of a roller brush according to the present invention;
4 is an experimental result graph showing experimental data according to [Table 2];
5 is an experimental result graph showing the deflection result of the conventional brush shown in [Table 3];
6 is a graph of experimental results showing the results of deflection of the roller brush according to the present invention shown in [Table 3]; and
7 is a cross-sectional view showing a conventional brush device.

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only those of ordinary skill in the art to which the present invention pertains, to complete the disclosure of the present invention. It is provided to fully understand the scope of the present invention, and the present invention is only defined by the scope of the claims.

The terminology used herein is for the purpose of describing the embodiments and is not intended to limit the present invention. In this specification, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, “comprises” and/or “comprising” does not exclude the presence or addition of one or more other components in addition to the stated components. Like reference numerals refer to like elements throughout, and "and/or" includes each and every combination of one or more of the recited elements. Although "first", "second", etc. are used to describe various elements, these elements are not limited by these terms, of course. These terms are only used to distinguish one component. Accordingly, it goes without saying that the first component mentioned below may be the second component within the technical spirit of the present invention.

Unless otherwise defined, all terms (including technical and scientific terms) used herein may be used with meanings commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, terms defined in a commonly used dictionary are not to be interpreted ideally or excessively unless specifically defined explicitly.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The composition of the roller brush

1 is a perspective view of a roller brush according to the present invention, FIG. 2 is an exploded perspective view of the roller brush according to the present invention, and FIG. 3 is a cross-sectional view of the roller brush according to the present invention. As shown in FIGS. 1 to 3 , the roller brush 10 according to the present invention includes a base part 100 , a covering part 200 , a rotation shaft 400 , a connection part 500 , and a brush part 300 . is composed

The base part 100 is a device that rotates by receiving power transmitted from the outside of the roller brush 10 , and serves as an overall rotation center of the roller brush 10 . This base part 100 is made in the shape of a rod or pipe having a longitudinal direction. The base part 100 may have a shape similar to that of the shaft 1100 of a generally used cleaning brush device. However, compared to the shaft 1100 made of a metal material used in the prior art in order to minimize bending due to its own weight during use of the roller brush 10, it has excellent rigidity, but may be made of a material having a relatively light weight. For example, the base part 100 may be made of a plastic-based composite including carbon fibers, and preferably made of carbon fiber reinforced plastic (CFRP). This carbon fiber reinforced plastic is a high-tech composite material that is attracting attention as a lightweight structural material with high strength and high elasticity.

For this reason, when the base part 100 made of carbon fiber reinforced plastic has the same diameter and length as compared to the shaft 1100 made of a metal material such as stainless steel, the weight is relatively reduced, and this causes bending due to load also decreases

The covering unit 200 is provided to surround the outer circumferential surface of the base unit 100 to prevent exposure to the base unit 100 and the outside. The covering part 200 is provided on the outer circumferential surface of the base part 100 to protect the base part 100 and to facilitate fastening of the brush part 300 . If this object can be achieved, the coating part 200 may be formed through any material and process. That is, the coating part 200 may use any method of a tube type, a film type, a painting method using paint, or a plating method, and preferably use a tube made of heat-shrinkable material to surround the outer circumferential surface of the base unit 100 . It is good to have it available. In addition, although any material may be used for the covering part 200, it is preferable that it is made of a polyolefine-based material. That is, the coating part 200 is disposed to surround the outer circumferential surface of the base part 100 using a tube made of a heat-shrinkable material based on polyolefin, and then heat is applied to the coating part 200 made of a heat-shrinkable material to cover the coating part 200 . It is preferable to be coupled to be in close contact with the outer peripheral surface of the base portion (100). As such, the coating part 200 made of a polyolefin-based tube has very strong chemical resistance and thus has strong properties against alkali as well as acid. It functions to protect the surface of the base part 100 .

The rotating shaft 400 is provided at both ends of the base unit 100 to couple the base unit 100 to the power transmission device. The rotation shaft 400 may be connected through any method as long as it can be stably coupled to both ends of the base unit 100 . As a temporary example, as shown in FIG. 3 , one end of the rotating shaft 400 is inserted into one end of the base part 100 by a predetermined length, and the other end of the rotating shaft 400 is one end of the base part 100 to the outside. It is good to be provided so that it is exposed. In addition, the coupling of the rotary shaft 400 may be coupled by forming a screw thread on one end and the base portion 100 of the rotary shaft 400, at least any one of coupling through a screw method, bonding, or bolt fastening, or by mixing these methods. have.

The connection part 500 is a device that is coupled on the connection part 500 of the base part 100 and the rotation shaft 400 so that the rotation shaft 400 is more stably coupled to the end of the base part 100 . In addition, the connection part 500 is provided on both sides of the base part 100 , respectively, to assist in connection with the rotation shaft 400 , and also serves to cover and protect both ends of the base part 100 and the covering part 200 . If this purpose can be achieved, the connection unit 500 may have any configuration. However, preferably, the connection part 500 may be configured as a flange, and this connection part 500 may be integrally configured with the rotation shaft 400 through welding or the like.

The brush unit 300 is provided on the outside of the covering unit 200 to clean a substrate such as an LCD panel. The brush unit 300 is provided on the outside of the covering unit 200 to remove foreign substances from the outer surface of the substrate without being separated from the covering unit 200 during rotation. At this time, the brush unit 300 may be coupled to the outside of the covering unit 200 through various methods, and both ends of the attached brush unit 300 in the longitudinal direction are arbitrarily used to prevent the brush unit 300 from being separated. finishing is done for In one embodiment, the brush part 300 is attached using an adhesive applied to one side or the entirety of the outer peripheral surface of the covering part 200, or only one side of both longitudinal ends of the brush part 300 through an adhesive or bolts. may be attached. In addition, the finishing treatment of the brush part 300 may be done in any way as long as it can prevent the brush part 300 from being arbitrarily separated by rotational force, etc. In order to prevent this, it is preferable to perform the finishing treatment 310 using an adhesive such as a silicone adhesive.

Experimental data of roller brush

The improved functions and effects of the roller brush 10 according to the present invention will be described in more detail with reference to experimental data comparing the roller brush 10 according to the present invention having the above configuration and the prior art.

First, comparing the physical properties of the carbon fiber reinforced plastic used in the base part 100 of the present invention and the stainless steel used in the conventional shaft 1100 and other materials is shown in Table 1 below.

ingredient Tensile strength (Mpa) Tensile modulus (Gpa) Specific gravity (g/CC) CFRP (HTS40) 2,060 137 1.55 GFRP (Glass Fiber) 1,370 39 2 STEEL(SS400) 400 206 7.8 High tensile steel (NiCrMo steel) 1,470 206 7.8 Stainless steel (SUS304) 980 206 7.8 Aluminum (A5052) 200 71 2.7 TITAN ALLOY 1,080 114 4.5

As shown in the above [Table 1], the carbon fiber reinforced plastic used for the base part 100 of the present invention has a significantly reduced specific gravity compared to the stainless steel used for the existing shaft 1100, while the tensile strength is greatly improvement can be seen. In addition, the results of measuring the bending strength of the carbon fiber-reinforced plastic used in the roller brush 10 according to the present invention and the material mixed with stainless steel and carbon fiber-reinforced plastic are shown in Table 2 below.

Center load (kg) Ψ80/2520 (CFRP 5T)
Bending amount (mm) Ψ80/2520
(SUS1.5T+CFRP 3T)
Bending amount (mm) 1 kg 0.03 0.03 3 kg 0.1 0.1 5 kg 0.15 0.15 7kg 0.19 0.2 10 kg 0.25 0.3 12 kg 0.35 0.4 15 kg 0.44 0.5 17 kg 0.51 0.55 20 kg 0.52 0.6 23 kg 0.61 0.7 25 kg 0.72 0.8 28 kg 0.85 0.95

4 is an experimental result graph showing experimental data according to [Table 2]. As shown in [Table 2] and Figure 4, it can be confirmed that the use of carbon fiber reinforced plastic alone has higher bending strength compared to using a mixture of stainless steel and carbon fiber reinforced plastic. Next, comparing the amount of deflection between the roller brush 10 according to the present invention and the conventional product under the same conditions, the following [Table 3] is shown. At this time, the experimental conditions are based on a shaft (base part + coating part) length of 3,690 mm, shaft (base part + coating part) outer diameter of 80 °, belt brush length of 3,410 mm, and brush outer diameter of 110 °.

standard shaft shaft + brush Expectation
effect weight amount of deflection
(mm) concentricity weight amount of deflection
(mm) old brush 16 kg 0.5 0.1 23.5 kg 0.6 the present invention 9.1 kg 0.2 0.1 16.2 kg 0.3 Weight reduction: 7.3 kg Deflection reduction: 0.3

5 is an experimental result graph showing the sag result of the conventional brush shown in [Table 3], and FIG. 6 is an experimental result graph showing the sagging result of the roller brush 10 according to the present invention shown in [Table 3]. to be. As shown in [Table 3], Figures 5 and 6 above, when the amount of deflection of the conventional brush made of stainless steel and the roller brush 10 according to the present invention is compared under the same conditions, the amount of deflection is reduced to about half. can check that As such, in the roller brush 10 according to the present invention, the base part 100, which is a core component, is made of a carbon fiber reinforced plastic material, so that the weight is significantly reduced while the rigidity is significantly improved. Due to this, the amount of deflection is also significantly reduced.

Accordingly, as the weight of the roller brush 10 according to the present invention is reduced, product transportation is facilitated and cleaning efficiency can be maximized. This will be described in more detail as follows.

First, the amount of deflection of the roller brush 10 according to the present invention is significantly reduced as can be confirmed through the above-described experimental data. As the amount of deflection decreases, the probability of occurrence of eccentricity decreases, and thus vibration and noise are also remarkably reduced.

As the vibration is reduced, the load transmitted to the power unit that transmits the rotational force to the roller brush 10 as well as the roller brush 10 is reduced, so that the probability of damage or breakage of the roller brush 10 and the power unit is reduced. decreases.

In addition, since the arrangement height of the brush unit 300 over the entire length of the roller brush 10 is almost the same when the amount of sag is reduced, the brush unit 300 is applied with the same force over the entire range of the substrate when cleaning the LCD substrate, etc. Washing can be performed. If the amount of deflection increases from one side of the center as in the conventional device, if the brush is placed in the center, smooth cleaning is not performed at both ends, and when the arrangement height is lowered to facilitate cleaning of both ends, one center of the center is separated from the substrate There is a problem in that the substrate or the brush is damaged by contact. However, in the present invention, since the amount of sagging is remarkably reduced, it is possible to smoothly clean the substrate while avoiding these problems.

As described above, those skilled in the art to which the present invention pertains will understand that the present invention can be implemented in other specific forms without changing the technical spirit or essential characteristics thereof. Therefore, it should be understood that the above-described embodiments are illustrative in all respects and not restrictive. The scope of the present invention is indicated by the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and equivalent concepts should be construed as being included in the scope of the present invention.

10: roller brush
100: base part
200: covering part
300: brush unit
310: finishing area
400: rotation axis
500: connection
1100: conventional shaft
1200: conventional brush
B: bolt

Claims (7)

a base portion composed of a pipe made of a plastic-based composite material including carbon fibers;
a covering portion provided to surround an outer circumferential surface of the base portion;
rotation shafts provided at both ends of the base part; and
a brush portion provided on an outer circumferential surface of the covering portion;
A roller brush comprising a. According to claim 1,
The base portion is a roller brush made of a carbon fiber reinforced plastic material. According to claim 1,
The coating portion is a roller brush made of a polyolefin-based compound. According to claim 1,
The coating portion is a roller brush provided on the outer peripheral surface of the base portion through any one method of tube, film, painting, or plating. According to claim 1,
A roller brush further comprising a connecting portion assisting the connection between the rotary shaft and the base at one side of the connecting portion of the rotary shaft and the base. 6. The method of claim 5,
At least one of the rotating shaft and the connecting portion is a roller brush made of stainless steel. According to claim 1,
Both ends of the brush part are finished using an adhesive roller brush.

Images