JPH0410328A - Cleaning device for bulb member - Google Patents

Abstract

PURPOSE:To clean the end face and the inner face of a bulb simultaneously with one brush by providing a circular cylinder part for touching the inner face of a bulb and a conic part for touching the end face of the bulb continuously to the circular cylinder part in a rotating brush. CONSTITUTION:A rotating brush 10 integrally comprises circular cylinder part 11 for touching the inner face of a bulb 1 and a conic part 12 for touching the end face of the bulb 1 continuously to the circular cylinder part 11, and the circular cylinder part 11 and the conic part 12 are respectively formed by plating hairs in a rotating brush 13. When the rotating brush 10 is rotated while it is inserted into the bulb 1, the circular cylinder part 11 is progressed into the end face of the bulb 1 to touch the inner face 1a of the bulb 1 for cleaning. Furthermore, when the brush 10 is progressed more, the circular cylinder part 11 cleans the inner face 1a of the bulb 1 and while the conic part 12 touches the end face 1b of the bulb 1 to clean the end face 1b. The end inner face 1a and the end face 1b of the bulb 1 are cleaned simultaneously with one brush.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Field of Application) The present invention relates to a cleaning device for a tube member such as a glass tube used in a bulb of a fluorescent lamp or an incandescent light bulb.

(Prior Art) For example, a fluorescent lamp is constructed by coating a phosphor on the inner surface of a straight glass bulb and sealing electrode mounts to both ends of the bulb.

Fluorescent lamps like the one shown in item 2 are made by applying a phosphor to the inner surface of a pre-cleaned bulb, firing it, sealing the stem of the electrode mount to the end of the bulb, and then evacuating the inside of the bulb. It is filled with inert gas and mercury.

In such a glass bulb, before the electrode stem is sealed, the part where the stem is sealed must be cleaned.

That is, during the process of applying the phosphor to the inner surface of the bulb, the phosphor drips down and adheres to the end of the bulb, and such phosphor needs to be removed.

If the phosphor remains attached to the end of the bulb, the phosphor will be mixed into the melted part of the bulb and stem, and since this is an impurity, it may cause holes or cracks in the sealing part. cause problems.

For this reason, the end of the bulb is cleaned to remove phosphor and other contaminants before sealing the stem.

A conventional cleaning device is, for example, Japanese Patent Publication No. 512482.
As shown in Japanese Patent No. 8, this was done using a plurality of rotating brushes.

That is, the cleaning device disclosed in the above publication includes a brush for the inner surface of the valve and a brush for the outer surface of the valve, and these brushes sequentially sweep the inner surface and the outer surface of the valve, respectively.

However, with such a configuration, it is necessary to prepare an internal brush and an external brush, respectively, which increases the number and types of brushes used, making the device complex, and the internal brush is used to clean the inner surface of the end of the valve. After cleaning, the outer surface of the end of the valve is wiped with a brush for the outer surface, or the outer surface of the end of the valve is separately performed in the reverse order, which increases the number of work steps and has the disadvantage that the work efficiency is not good.

By the way, in cleaning the glass bulb as described above, it has been found that it is not necessary to clean a large area of the outer surface of the bulb because it is sufficient to wipe away the melted portion of the bulb and stem.

In other words, in order to clean a glass bulb, it is sufficient to brush the end face of the bulb and the subsequent end of the inner surface of the bulb.

For this reason, consideration has been given to cleaning the valve using a rotating blower as shown in FIGS. 3 and 4.

That is, FIG. 3 shows a state in which the inner surface rotating brush 2-C is wiping the end of the inner surface 1a of the valve 1, and FIG. 4 shows a state in which the end surface 1b of the valve 1 is being cleaned with the end surface rotating brush 3. shows.

Note that 4 indicates a valve chuck.

(Problem to be Solved by the Invention) However, even when cleaning the valve 1 with the rotating brushes 2 and 3 as shown in FIGS. 3 and 4 above, the types and number of brushes increase, making the device complicated. At the same time, after cleaning the inner surface 1a of the end portion of the valve 1 with the rotating brush 2 for the inner surface, the end surface 1b of the valve 1 is wiped with the rotating brush 3 for the end surface, or in the reverse order, each work is performed separately. Therefore, there are many work steps, which has the disadvantage of not improving work efficiency.

The present invention was made based on the above circumstances, and its purpose is to provide a pipe member cleaning device that can simultaneously clean the end surface and inner surface of a pipe using one brush. It is something.

[Structure of the Invention] (Means for Solving the Problems) The present invention provides a cleaning device for cleaning an end surface of a tube and an inner surface of an end portion following this end surface with a rotating brush, wherein the rotating brush is in contact with the inner surface of the tube. It is characterized by comprising a cylindrical portion and a conical portion that is continuous with the cylindrical portion and contacts the end surface of the tube.

(Function) According to the present invention, the cylindrical portion formed on the rotating brush wipes the inner surface of the tube, and the conical portion continuous with the cylindrical portion comes into contact with the end surface of the tube to clean the end surface.

(Example) The present invention will be described below based on an example shown in FIGS. 1 and 2.

In the figure, 1 is a glass bulb of a fluorescent lamp;
4 is the chuck.

10 is a rotating brush according to the present invention, and this rotating brush 1
0 is integrally equipped with a cylindrical part 11 that contacts the inner surface of the bulb 1 and a conical part 12 that continuously contacts the end face of the bulb 1, and these cylindrical part 11 and conical part 12 are respectively flocked to the rotating shaft 13. It is formed.

According to such a rotating brush 10, when the brush 10 is inserted into the valve 1 while being rotated, the cylindrical part 11 enters the end of the valve 1 and comes into contact with the inner surface 1a of the valve 1 to wipe it. .

When the rotating brush 10 is pushed further, the conical part 1 cleans the cylindrical part 11 or the inner surface 1a of the valve.
2 comes into contact with the end surface 1b of the valve 1 and cleans this end surface 1b.

Therefore, according to such a rotating brush 10, it is possible to simultaneously clean the end inner surface 1a and the end surface 1b of the valve 1 with one brush, and the number of brushes used can be reduced, resulting in a simpler configuration. , and 1 inner surface in 1 process
Since it is possible to clean two places, i.e. a and the end surface 1b, work efficiency is improved.

Note that the present invention is not limited to cleaning the bulb of a fluorescent lamp, but can also be carried out to clean the spherical bulb of an incandescent lamp, the outer bulb of a discharge lamp, and the like.

Furthermore, the present invention is not necessarily limited to tube bulbs, and can be implemented using other glass tubes as well.

Further, the tube may be a metal other than glass or a plastic tube, and is not limited to being open at both ends.

[Effects of the Invention] As explained above, according to the present invention, the cylindrical part formed on the rotating brush wipes the inner surface of the pipe, and the conical part continuous with the cylindrical part comes into contact with the end face of the pipe to clean this end face. do. Therefore, since one brush simultaneously cleans the inner surface and end surface of the tube, the structure is simple and work efficiency is improved.

[Brief explanation of drawings]

1 and 2 show one embodiment of the present invention, FIG. 1 is a configuration diagram of a valve and a rotating brush before cleaning, and FIG.
The figure is a cross-sectional view during cleaning, FIGS. 3 and 4 show the conventional structure, FIG. 3 is a cross-sectional view when the inner surface is cleaned, and FIG. 4 is a cross-sectional view when the end surface is cleaned. DESCRIPTION OF SYMBOLS 1... Valve, 10... Rotating brush, 11... Cylindrical part, 12... Cone part. Applicant Representative Patent Attorney Takehiko Suzue Figure 3 Ward 2 Tomi 4 Ward

Claims (1)

[Claims] In a cleaning device that uses a rotating brush to clean an end surface of a tube and an inner surface of the end following this end surface, the rotating brush has a cylindrical portion that contacts the inner surface of the tube and a conical portion that continuously contacts the end surface of the tube. A pipe member cleaning device comprising: