JP2001229827A - Sealing method and device for fluorescent lamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sealing method and device for a fluorescent lamp being able to manufacture the products of the same quality and to keep the same quality in sealing the bulb and stem in the course of the fluorescent lamp manufacturing process. SOLUTION: Bisected type cylindrical burner 7 is installed at the fixed side. After a sealing head 8 with a set of bulb 1 and stem 6 arrives and the sealing burner is transferred to the prescribed location by the up and down/opening and shutting drive, heating is made using the flame adjusted by a gas flow controller 9. The products of the same quality are manufactured in the mill equipped with a plural number of the above burners using the same process for the whole work to realize the stabilization of quality.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluorescent lamp sealing method and apparatus for sealing a bulb and a stem in a fluorescent lamp manufacturing process.

[0002]

2. Description of the Related Art FIG. 3 shows a conventional fluorescent lamp sealing method and apparatus.

[0003] In FIG. 3, in a fluorescent lamp horizontal sealing method for sealing a bulb 1 and a stem 6 of a fluorescent lamp, a mount pin 2 for holding a tip of the bulb 1 held by a valve chuck 14 and an outer periphery thereof. The sealing head 4 is constituted by the burner 3 provided in the above. This sealing head 4
A plurality of cylindrically arranged sealing mills 5 are formed.
While the sealing mill 5 makes one rotation by continuous driving or intermittent driving, the flame is changed by changing the gas flow rate in the burner 3 provided in the sealing head 4 while moving along the opening end of the valve 1. The periphery of the stem 6 is heated and the stem 6 is welded to the opening of the bulb 1 to perform a glass sealing operation for sealing the stem 6 at the tip of the bulb 1.

[0004]

However, with the above structure, in a horizontal sealing device for sealing a bulb and a stem of a fluorescent lamp like a conventional device, the sealing head 4 is not provided.
In other words, even if the burners 3 of exactly the same dimensions are arranged, the flames are slightly different because the processing accuracy varies in each burner 3 and the soot adhesion state is different. There is a problem that the quality varies by the number of the stop heads 4.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the above-mentioned problems, and when sealing a bulb and a stem in a fluorescent lamp manufacturing process, it is possible to produce products of the same quality and to stabilize the quality. To provide a method and apparatus for sealing a fluorescent lamp.

[0006]

In order to achieve the above object, the present invention is configured as follows.

According to a first aspect of the present invention, in a method of sealing a glass of a bulb and a stem of a fluorescent lamp during manufacturing of the fluorescent lamp, a plurality of sealing heads respectively holding the bulb and the stem are provided. By heating the valve and the stem conveyed respectively by the same sealing burner, all the sealing heads are heated by the same sealing burner. To provide a method for sealing a fluorescent lamp.

According to a second aspect of the present invention, there is provided a sealing device for sealing a bulb and a stem glass of a fluorescent lamp at the time of manufacture of the fluorescent lamp. A sealing head, and a single sealing burner for heating the valve and the stem conveyed by all of the plurality of sealing heads, respectively. A locking device is provided.

According to a third aspect of the present invention, in the second aspect, the burner is separated from the sealing head holding the stem and the valve and has a cylindrical split burner on a sealing device fixed side. A sealing device for a fluorescent lamp as described above is provided.

According to a fourth aspect of the present invention, a loading conveyor for sequentially transferring the valve fired in the firing furnace from the firing furnace while maintaining the temperature of the valve, a stem loading conveyor for supplying the stem, and A sealing mill having a sealing head is arranged and intermittently rotated, the valve transferred by the loading conveyor is held by the sealing head, and the stem supplied by the stem loading conveyor is held. A main turret that engages the valve with the stem and then performs a sealing operation with the single sealing burner; and ends sealing with the main turret. A second or third aspect in which an unloading conveyor for transferring the ramp to a subsequent process is provided. Providing a sealing device of a fluorescent lamp mounting.

[0011]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a schematic diagram of the entirety of a sealing device for realizing a method for sealing a fluorescent lamp according to an embodiment of the present invention. FIG. 2 is a partially enlarged view of a sealing mill having a sealing head, which is arranged on the outer periphery of a main turret of the sealing device. The sealing mill has a plurality of sealing burners 7 in order to divide the heating process in order to shorten the tact time and to heat with a plurality of sealing burners.

The sealing device for realizing the method for sealing a fluorescent lamp according to the above-described embodiment of the present invention is a sealing device for sealing the glass of the bulb 1 and the stem 6 of the fluorescent lamp at the time of manufacturing the fluorescent lamp. Then, the burner section is removed from the conventional sealing head which is the movable side, and one cylindrical two-piece sealing burner 7 is provided not on the sealing head 8 which is the movable side but on the sealing device fixed side, and the valve 1 is provided. After the arrival of the sealing head 8 in a state in which the valve 6 and the stem 6 are set, the one sealing burner 7 is required to be in a fixed position by the vertical and open / close driving devices, that is, for sealing and heating the valve 1 and the stem 6. Suitable burner position (ie, FIG. 2
, And then the sealing burner 7 heats the valve 1 and the stem 6 of the sealing head 8 with the flame adjusted by the gas flow controller 9 provided on the sealing device fixed side. To do.

Here, FIG. 4 shows a view from the direction A in FIG.
The cylindrical two-piece sealing burner 7 composed of two divided bodies 7A and 7B is shown. The reason why the sealing burner 7 is divided into two in this way is to perform the following operation. That is, in order to heat the sealing portion with the valve 1 and the stem 6 set, it is necessary to dispose the sealing burner 7 at a position surrounding the mount pin 2 holding the stem 6. For this reason, as shown in FIG. 5A, when the two divided bodies 7A and 7B of the sealing burner 7 are in an open state, the valve 1 and the stem 6 are fixed at a position below them. After the sealing head 8 has moved, as shown in FIG. 5B, the sealing burner 7 is lowered toward the valve 1 and the stem 6 with the two divided bodies 7A and 7B of the sealing burner 7 open. As shown in FIG. 5C, the two divided bodies 7A, 7A,
Close 7B. Thereafter, heating is performed by the sealing burner 7, and after the heating is completed, the two divided bodies 7 of the sealing burner 7 are heated.
A, 7B are opened, and the two divided bodies 7A,
7B rises while being opened, and waits until the next sealing head 8 comes.

As shown in FIG. 2, the vertical movement of the sealing burner 7 and the opening / closing operation of the sealing burner 7 are caused by the raising and lowering of the vertical cam lever 100, whereby the rotation lever 103 is rotated counterclockwise around the fulcrum 104 of the frame 102. The sealing burner 7 connected to the distal end of the rotating lever 103 is lowered by the downward movement of the distal end. Conversely, when the upper and lower cam levers 100 descend, the fulcrum 1
As the tip of the rotating lever 103 that rotates clockwise around 04 rises, the sealing burner 7 connected to the tip of the rotating lever 103 rises. When the opening / closing cam lever 101 moves to the left in FIG. 2, a plate that normally holds the two divided bodies 7A and 7B open by a tension spring 15A as shown in FIG. 6A. The cam 15 moves rightward in FIG. 6A and moves to a state as shown in FIG. 6B. As a result, 2
The two divided bodies 7A and 7B are in a closed state. Conversely, when the opening / closing cam lever 101 moves rightward in FIG. 2, the plate cam 15, which holds the two divided bodies 7A and 7B in a closed state as shown in FIG. In (B), it moves to the left and moves to the state shown in FIG. As a result, the two split bodies 7A and 7B are opened by the tension spring 15A.

The above-mentioned sealing device comprises a loading conveyor 1
1, a main turret 10, an unloading conveyor 12, and a stem loading conveyor 13.

The loading conveyor 11 sequentially transfers the valve 1 fired in the firing furnace 30 from the firing furnace 30 to the main turret 10 while keeping the temperature of the valve 1 warm.

The main turret 10 rotates clockwise to seal the valve 1 transported by the loading conveyor 11.

The unloading conveyor 12 transfers the sealing end lamp 31 sealed by the main turret 10 to a subsequent process.

The stem loading conveyor 13 has
The stem 6 is sequentially supplied to the main turret 10.

A sealing mill 5 having a plurality of sealing heads 8 is arranged on the outer periphery of the main turret 10, and rotates one clockwise by intermittent driving. At the lowermost end of the main turret 10 in FIG. 1, the stem 6 supplied by the stem loading conveyor 13 is connected to the plurality of sealing heads 8.
Respectively. Subsequently, after intermittently rotating clockwise by a predetermined angle, the valves 1 transferred by the loading conveyor 11 are inserted into the plurality of valve chucks 14 of the main turret 10, respectively. In this insertion operation, the push-up device 11c provided inside the loading conveyor 11 pushes up to the position of the valve chuck 14. That is, as shown in FIG. 7, the valve 1 is held in a valve holding portion 11a having a U-shaped cross section of the loading conveyor 11 and is conveyed by the movement of the conveyor main body 11b. The valve 1 is pushed up from the holding portion 11a toward the valve chuck 14 of the main turret 10, and is held by the valve chuck 14.

After that, after a further intermittent rotation in the clockwise direction by a predetermined angle, when reaching the sealing position, the sealing head 8 having the stem 6 is rotated by the rotation of the main turret to stop the sealing head 8 while the rotation is stopped. With the groove cam provided at the rear of the main turret 10, the valve 1 is moved forward (moves leftward in FIG. 2) toward the valve 1 held by the valve chuck 14, and the valve 1 and the stem 6 are engaged. . After that, the burner 7 is moved to a fixed position by the above and below and the opening / closing drive device, and the gas flow rate is changed by the digital gas flow rate controller 9 to change the flame in the burner 7 along the open end of the valve 1. Then, the periphery of the stem 6 meshed with the valve 1 is heated. As a result, the stem 6 is welded to the opening of the valve 1, and a sealing operation for sealing the stem 6 at the tip of the valve 1 is performed.

In this sealing operation, after the burner 7 is ignited,
By lowering the burner 7 movable in the direction perpendicular to the moving direction (left direction in FIG. 2) of the valve 1 in FIG. 2 and moving the opening / closing plate 15 having an opening / closing function in the horizontal direction with the valve 1, the burner 7 is moved. Close and heat. That is, the plate 15 is a plate cam, and the two split bodies 7A and 7B of the sealing burner 7 are normally kept open by the tension spring 15A. However, when the sealing burner 7 is lowered after the sealing head 8 is sealed below the sealing burner 7, the movement of the opening / closing cam lever 101 causes the plate 1 to move.
5 moves and the two divided bodies 7A and 7B of the sealing burner 7
Is closed and heated to perform a sealing operation. After the end of the sealing operation, the main turret 10 is again intermittently rotated clockwise by a predetermined angle, and then the sealing end lamp 31 sealed by the main turret 10 is transferred to the unloading conveyor 12, and the unloading conveyor 12 is moved. 1
2 transfers the sealing end lamp 31 sealed by the main turret 10 to a subsequent process.

According to the above embodiment, the burner portion is removed from the conventional movable-side sealing head, the cylindrical two-part burner 7 is provided on the sealing device fixed side, and the valve 1 is mounted.
And the stem 6 are held by the sealing head 8, and all sets of the valve 1 and the stem 6 transported by the sealing head 8 are heated by the same sealing burner 7 provided on the sealing device fixed side. By doing so, all the workpieces are heated by the same sealing burner 7, so that all the workpieces can be produced in the same process and with the same quality, and the quality can be stabilized.

It should be noted that the present invention is not limited to the above embodiment, but can be implemented in other various modes.

For example, the above-mentioned sealing device is not limited to a device that is more generally constituted by a loading conveyor 11, a main turret 10, an unloading conveyor 12, and a stem loading conveyor 13.

[0027]

As described above, according to the present invention, the valve and the stem are held by the sealing head, and all sets of the valve and the stem conveyed by the sealing head are provided on the sealing device fixed side. By heating with the same sealing burner, all the workpieces are heated by the same sealing burner and all products can produce the same process and the same quality products, realizing quality stabilization. Can be. That is, since all the workpieces pass through the same sealing burner, products of the same quality are produced and the quality is stabilized.

Further, by removing the burner portion from the conventional sealing head on the movable side and providing a cylindrical two-piece burner on the fixed side of the sealing device, the effect that the sensor valve becomes unnecessary can be obtained.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a sealing device for realizing a fluorescent lamp sealing method according to a first embodiment of the present invention.

FIG. 2 is an enlarged side view of a main part of a sealing device for realizing the fluorescent lamp sealing method according to the embodiment.

FIG. 3 is an enlarged side view of the configuration of a conventional sealing device.

FIG. 4 is a front view showing a cylindrical two-part sealing burner of the sealing device as viewed from a direction A in FIG. 2;

FIGS. 5A, 5B, and 5C show a state in which the sealing burner of the sealing device is in a standby state in which two divided bodies are open, respectively, and are lowered in a state in which two divided bodies are opened. Status,
FIG. 4 is an explanatory diagram of a state where two divided bodies are closed.

6 (A) and 6 (B) are explanatory views of an open state and a closed state of two divided bodies of a sealing burner of the sealing device, respectively, as viewed from a direction B in FIG. 2;

FIG. 7 is an explanatory view showing a mechanism for moving a valve from a loading conveyor to a main turret of the sealing device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Valve, 2 ... Mount pin, 5 ... Sealing mill, 6 ... Stem, 7 ... Burner, 8 ... Sealing head, 9 ... Gas flow controller, 10 ... Main turret, 11 ... Loading conveyor, 12 ... Unloading conveyor , 1
3 ... Stem loading conveyor, 14 ... Valve chuck, 15 ... Opening / closing plate, 30 ... Baking furnace, 31 ... Sealing end lamp.

 ──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Nobuya Uemura 1006 Kazuma Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. F term (reference) 5C012 JJ01

Claims (4)

[Claims] 1. A method for sealing a glass of a bulb (1) and a stem (6) of a fluorescent lamp during manufacture of the fluorescent lamp, wherein a plurality of sealing heads (8) holding the bulb and the stem, respectively. By heating the valve and the stem conveyed at the same time by the same sealing burner (7), all the sealing heads are heated by the same sealing burner. A method for sealing a fluorescent lamp, comprising: 2. A sealing device for sealing a glass of a bulb (1) and a stem (6) of a fluorescent lamp during manufacture of a fluorescent lamp, wherein a plurality of sealing heads respectively holding and conveying the bulb and the stem. (8), and a single sealing burner (7) for heating the valve and the stem conveyed by all of the plurality of sealing heads, respectively. Fluorescent lamp sealing device. 3. The fluorescent lamp according to claim 2, wherein the burner (7) is separated from the sealing head holding the stem and the bulb, and has a cylindrical split burner on a fixing device fixed side. Sealing device. 4. A loading conveyor (11) for successively transferring the valves fired in a firing furnace (30) from the firing furnace while keeping the temperature of the valves, and a stem loading conveyor (1) for supplying the stems.
3) and a sealing mill (5) having the plurality of sealing heads on the outer periphery is arranged, intermittently rotated, and the valve transferred by the loading conveyor is held by the sealing head. A valve chuck (14) for holding the stem supplied by a stem loading conveyor, the valve being engaged with the stem, and then sealed by the single sealing burner. A turret (10), and a sealing end lamp (3) sealed with the main turret.
Unloading conveyor (1) for transferring 1) to the subsequent process
The fluorescent lamp sealing device according to claim 2 or 3, further comprising (2).