JPS59128741A - Manufacturing device for bulb - Google Patents

Abstract

PURPOSE:To make the diameter of a mount holder smaller and make the captioned device applicable to manufacture a bulb with small diameter by commonly inserting an exhaust tube and a lead wire in the mount holder and bending the lead wire in the direction separated from the exhaust tube, and sealing-cutting it. CONSTITUTION:A butting plate 18 provided at the outside of the small diameter section 17 of a sealing head 9 is connected to guide rods 19 and 19 that penetrate into a slider 8 and can be reciprocated in the axial direction of a mount holder 11 and then is connected to the piston rod 21 of an air cylinder 20. On the other hand, a bending mechanism 22 that bends the root section of the lead wires 105 and 105 in the direction separated from the exhaust tube 103 when the sealing head 9 is separated from a mount 101 and an exhaust tube 103 and lead wires 105 and 105 are pulled out from the inside of an insertion hole 13 is provided at the outside of the sealing head 9. In addition, a sealing and cutting burner 32 is provided at the lower side of the sealing head 9.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a tube manufacturing device that seals the bulb and mount of the tube, replaces the inside of the bulb with gas, and seals and cuts the exhaust pipe. .

[Technical background of the invention and its problems]

For example, in a fluorescent lamp, there is a sealing process in which the flared part of the mounted stem is welded to the opening edge of the tubular nozzle, and following this sealing process, an exhaust pipe protruding from the stem is Needless to say, there is an exhaust process that exhausts the inside of the valve, fills in mercury or inert gas through this exhaust pipe, and then seals and cuts the exhaust pipe, but in recent years both processes have been performed consecutively on the same machine. Manufacturing equipment has been developed to enable this. In this device, a mount holder for supporting the stem is attached to the head body, and a chibbing gunner for sealing and cutting the exhaust pipe is attached to the burner attachment hole of the mount holder.
Moreover, a sealing burner is placed around the outer circumference of the mount holder to melt the abutting part between the flare part of the stem and the opening edge of the valve in a heating bath, and the abutting part heated and melted by this sealing burner is pressed. A putting plate is disposed so as to be able to reciprocate in the axial direction, and a gas displacement head for displacing gas in the valve through an exhaust pipe is disposed roughly near the mount holder.

By the way, this kind of equipment is used to manufacture fluorescent rungs with pulp diameters of 29 m to 38 m, which are commonly used, but in recent years, in order to improve the efficiency of lamps, the pulp diameter has been made even smaller. Development of a new lamp is underway. When using the above apparatus for producing this kind of small-diameter fluorescent rungs, the inner diameter of the putting plate needs to be smaller than the outer diameter of the pulp, and of course the outer diameter of the mount holder also needs to be smaller accordingly. Roru.

However, since a chipping burner is installed inside the mount holder, the inner diameter is restricted, and if the outer diameter is made smaller as described above, the wall thickness of the mount holder will become extremely thin, which may reduce its mechanical strength. There is. Moreover, in order to prevent the lead wire from being burned by the chipping burner, the mount holder has separate insertion holes for the exhaust pipe insertion and IJ-)' wire insertion, so the burner itself The outer diameter becomes relatively large, which also hinders the reduction in the diameter of the mount holder.

[Purpose of the invention]

The present invention was made based on these circumstances, and
It is possible to reduce the diameter of the mount holder while ensuring its mechanical strength, and it can also be applied to manufacturing tubes with small pulp diameters, and in this case, there is no risk of the lead wire being burned by the flame of the sealing burner. The purpose is to provide a unique tube manufacturing device.

[Summary of the invention]

That is, in order to achieve the above object, the present invention connects an exhaust pipe and a lead M? to a mount holder. A common insertion hole is provided on the outside of the mount holder, and a bending mechanism is provided on the outside of the mount holder to bend the lead wire away from the exhaust pipe when the mount holder is moved away from the stem after the stem is sealed. The exhaust pipe is characterized in that it is provided with a sealing burner that blows out flame into the exhaust pipe to perform sealing V.

Example The invention will be described below based on an embodiment shown in the drawings.

In the figure, reference numeral 1 denotes a guide rail, and an exhaust head 3 is attached to the guide rail 1 via a slider 2 so as to be able to reciprocate in the direction of arrow AB. The exhaust head 3 has an insertion hole 4 into which an exhaust pipe 103 led out from the stem 102 of the mount 101 is inserted, and an annular tightening pummel 5 is attached to the insertion hole 4 . The diameter of the tightening arm 5 is reduced by tightening a tightening ring 65- screwed onto the outer periphery of the exhaust rod 3, so that the exhaust pipe 103 is tightly tightened and fixed. The insertion hole 4 also communicates with a gas replacement path 7 for flow exhaust, gas cleaning, and injection of mercury or inert gas.

10,000, a seal head 9 is attached to the guide rail 1 via another slider 8 so as to be able to reciprocate in the direction of the arrow AB. It is designed to move independently. The sealing head 9 faces the exhaust door 3, is opened at a portion directly facing the insertion hole 4 of the exhaust head 3, and has a mount holder 1 in the mounting hole 10.
1 is attached. The mount holder 11 has a cylindrical shape, and its outer diameter is the same as the flared portion 10 of the stem 102.
4, and the tapered tip 12 abuts the circular surface of the flared portion 104 substantially coaxially to position the flared portion 104. On the axis of the mount holder 11, there is an exhaust pipe 103 and two lead wires 1 led out from the stem 102 parallel to the exhaust pipe 1036.
05 and 105 are commonly inserted through the single insertion hole 13. Furthermore, a sealing burner 14 is integrally provided within the sealing door 9. This sealed burner 14
is the flare portion 10 on the outside of the mount holder 11.
It has a large number of flame holes 15 toward the periphery of 4,
These flame holes 15 are arranged in parallel at intervals in the circumferential direction, and communicate with a gas passage 16 provided between the inner surface of the mounting hole 10 and the outer surface of the mount holder 11. Further, a ring-shaped putting plate 18 is disposed coaxially on the outside of the small diameter portion 12 in the sealing head 9, and the inner diameter of this batting plate 180 is the same as that of the flared portion 12.
It is formed smaller than the outer diameter of No. 4. The putting plate 18 passes through the slider 8 and is connected to the idle rods 19 and 19 so as to be able to reciprocate in the axial direction of the mount holder 11, and this putting plate 18 is connected to the piston rod 21 of the air cylinder 20. has been done. Therefore, when the air cylinder 20 is operated in the direction of protruding the two-stone rod 21, the putting plate 18 moves from the outer periphery of the small diameter portion 17 to the flared portion 10 as shown by the imaginary line in FIG.
It is designed to advance towards the 4th side. The putting plate 18, the sealing burner 14, and the mount holder 11 are moved together with the sealing head 9 toward and away from the mount 101.

On the other hand, when the sealing head 9 is retreated in the direction away from the mount 101 and the exhaust pipe 103 and the lead wires 105, 105 are pulled out from the insertion hole 13I7'3, A bending mechanism 22 for bending the root portions of the lead wires 105, 105 in a direction away from the exhaust pipe 103 is disposed. The bending mechanism 22 is shown in detail in FIGS. 3 and 4. That is, 23
is its main body, and has a pair of guide rails 24, 24 arranged in parallel and spaced apart from each other in the vertical direction. Guide rail 24.2
The proximal ends of a pair of bending members 25 and 25 are coaxially supported between the distal ends of the bending members 25 and 25 via a pivot shaft 26. Bending member 2
The tip of 5.25 is formed into a sharp shape, and
They are aligned parallel to each other by the biasing force of the spring 27, and because of the directional force perpendicular to the axial direction of the exhaust pipe 103, they are accurately directed to the gap between the exhaust pipe 103 and the lead wires 105 and 105. There is. In addition, the guide rail 24
．． A slide member 28 is slidably attached between the bending members 25 and 24, and the slide member 28 is connected to the piston rod 3° of the air cylinder 29 and
It is out so as to be reciprocated in the direction toward and away from 5. Each bending member 25.2 is provided at the tip of the slide member 28.
Protrusions 31, 31 that press eccentric positions on both sides are protruded from the pivot portion of the proximal end of 5, and these protrusions, ? 1
, 31 press the bending member 25.25, the distal ends of the bending member 25.25 are rotated in a direction vertically away from each other against the biasing force of the spring 27. Note that the bending members 25, 25 of this embodiment are made of a conductive material and are connected to a power source (not shown).
- It also serves as a current-carrying terminal for energizing the lead wires 105 and 105. The entire bending mechanism 22 is driven by a driving source such as an air cylinder (not shown).
Lead wire 1 from the direction perpendicular to the axial direction of exhaust 'W103
It is designed to be reciprocated in the direction of approaching and separating from 05.105.

Further, a sealing burner 32 is arranged at the lower side of the sealing head 9. As shown in FIG. 6, the sealing burner 32 has a pair of burner nozzles 33 and 33 spaced apart and facing each other in the left and right directions, and is connected to a drive source such as an air cylinder (not shown). It is reciprocated diagonally upward toward . When the cut-off burner 32 is raised, the burner nozzle 3.3.33 inserts the base of the exhaust pipe Jos from both left and right sides.

In addition, the reference numeral 106 in FIG. 1 is a filament coil, 10
7 is a straight tube type glass bulb, and this glass bulb 10
7 is supported by a valve holder 10- (not shown) so that its opening edge directly faces the circumference of the flare portion 104.

Next, the operation of the above configuration will be explained. .

To exhaust air, the door 3 and the sealing head 9 take off the mount 101 while moving in the direction of the arrow B, respectively. That is, the exhaust pipe 103 and the lead wires 105 and 105 are commonly inserted into the insertion hole 13 from the distal end 12 side of the mount holder 11, and the distal end of the exhaust pipe 103 is further inserted into the insertion hole 4 of the exhaust head 3. You can get it inserted. When the inner circumferential surface of the flare portion 1040 comes into contact with the tip 12 of the mount holder 11, the diameter of the tightening rubber 5 is reduced, and the exhaust pipe 103 is tightened. In the process of operation up to this point, the glass bulb 107 is supported by the bulb holder and is sent along the direction of arrow C in FIG. 1 to the illustrated position, where it is stopped and is on standby.

Next, the door 9 is moved in the direction of arrow A toward the exhaust spatula P3 and the seal, so that the peripheral edge of the flare portion 104 comes into contact with the opening edge of the valve 107. In this state, the sealed burner 14
When ignited, the flame ejected from the flame holes 15 is directed toward the abutting part between the bulb 107 and the flare part 104, and heats and melts this abutting part. This melting seals the valve 107 and the stem 102. At this time, by protruding the piston rod 21 of the air cylinder 20, the putting plate 18 is flared as shown by the imaginary line in FIG. 104 side, and lightly presses the abutment part in the molten state to promote mutual familiarization of the glasses.

In the operating process up to this point, the bending mechanism 22 and the sealing burner 32 are located at positions remote from the outer side and lower side of the sealing head 9 and the putting plate 18, respectively.
There is no interference between the sealing burner 32 and the bending mechanism 22. When the sealing between the valve 107 and the mount 101 is completed in this way, the sealing burner 14 is stopped and the rad 3 is exhausted.
The inside of the glass bulb 107 is evacuated through. At this time, the sealing plate 9 and the padding plate 18 are moved in the direction of arrow B via the slider 8, and the exhaust pipe 103 and the lead wire 105 are pulled out from the insertion hole 13 and exposed to the outside. At the same time, the entire bending mechanism 22 is advanced toward the lead wires 105, 105 through the drive source, and the tips of the bending members 2.5, 25 are inserted into the gap between the exhaust pipe 103 and the lead wires 105, 105, respectively. let

Subsequently, the piston rod 30 of the air cylinder 29 is projected, and the bending member 25.25 is moved through the slide member 28.
Rotate it in the direction of moving away from it up and down. Through this series of wires, the lead wires 105, 105 are
As shown in the figure, the bending member 25° is pushed by the bending member 25, and its attachment point expands upward and downward from the root, that is, the exhaust pipe 103.
The exhaust pipe 103 is bent in a direction substantially perpendicular to the axial direction of the exhaust pipe 103, and moves away from the exhaust pipe 103. In this case, in this embodiment, the bending member 2
By energizing the lead wires 105, 105 through the wires 5.25 and lighting the filament coil 106, the coating material applied to the filament coil 106 is decomposed and the adsorbed impurities 13- are released, so-called flushing. After that, the glass bulb 1 is passed through the gas exchange path 7 and the exhaust pipe 103.
07 is filled with mercury and inert gas.

Next, the cut-off burner 32 is ignited, and its burner nozzle 33.
This opening burner 32
is raised diagonally upward from the standby position below the sealing head 9, and the burner nozzles 33, 33 are positioned on both sides of the base of the exhaust pipe 103. Then, the exhaust pipe 103 is burned and heated and melted, so if only the door 3 is moved in the direction of arrow B to the exhaust gas, the exhaust pipe 103 is pulled and expanded at the melted part, and as a result, the molten glass is closed and the exhaust pipe 103 is sealed off.

According to such a manufacturing apparatus, the sealing burner 14 for sealing and cutting the exhaust pipe 103 is arranged outside the mount holder 11 as a separate body from the mount holder 11, so that the diameter of the glass bulb 107 and the putting plate 18 can be reduced. Even if the outer diameter of the mount 14-holder 11 is reduced accordingly, the wall thickness does not become extremely thin. Moreover, the exhaust pipe is 10.9 and the lead wire is 10.
5.105 and 105 are inserted through the common insertion hole 13, the lead wire is reduced by 1 os compared to the conventional structure.
The diameter of the mount holder 11 can be reduced by the diameter of the hole through which the +zosfe passes. Therefore, it is possible to reduce the diameter of the mount holder 11 while ensuring sufficient mechanical strength, and the mount holder 11 can be used without any problems in manufacturing fluorescent lamps with small bulb diameters.

Further, according to the above configuration, the lead wires 105, 105 are bent in a direction away from the exhaust pipe 103 before the exhaust pipe 103 is sealed and cut.
5 is not burned by the sealing burner 32, and thermal deterioration such as oxidation can be prevented. In addition, in this embodiment, c. a bending member 25 for bending the lead wires J 05 and 'J 05;
Since the terminal 25 is provided with a function as a current-carrying terminal, a special current-carrying terminal is not required, and therefore the number of parts can be reduced and the structure can be simplified. Furthermore, since there is no need to incorporate the cut-off burner 32 into the mount holder 11, the structure of the cut-off burner 32 itself and the mount holder 11 can be simplified, and troublesome disassembly and assembly is not required during maintenance and inspection.

Not only can the gas flame ejected from the sealing burner 32 be easily confirmed from the outside, but since this gas flame is ejected into a wide space, the gas flame is extremely stable, and the exhaust pipe 103 is welded and sealed. This can be done completely reliably, improving reliability.

However, the manufacturing apparatus according to the present invention is not limited to manufacturing fluorescent lamps, and can be similarly applied to lamps equipped with the mounts configured as described above, such as general incandescent light bulbs.

Furthermore, the configurations of the bending mechanism and the sealing burner are not limited to those of the above-described embodiments.

〔Effect of the invention〕

According to the invention detailed above, the mount holder is provided with an insertion hole through which the exhaust pipe and the lead wire are commonly inserted, and the mount holder is provided on the outside of the mount holder so that the mount holder moves away from the stem after the stem is sealed. A bending mechanism is provided to bend the lead wire away from the exhaust pipe when the lead wire is moved, and a cutoff burner is provided to seal off the exhaust pipe. It is possible to reduce the diameter of the mount holder by the hole through which the wire is passed, and the wall thickness of the mount holder itself does not become extremely thin, which is a problem when manufacturing tubes with small valve diameters. <Can be used. Moreover, when sealing and cutting the exhaust pipe, the lead wires are bent in the direction away from the exhaust pipe, so the lead wires are often burned together with the exhaust pipe, and this has the advantage of preventing thermal deterioration. be.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a cross-sectional view of the entire structure, Fig. 2 is a cross-sectional view of the sealing section, Fig. 3 is a side view of the bending mechanism, and Fig. 4 is a cross-sectional view of the bending mechanism. FIG. 5 is a sectional view showing the bent state of the lead wire, and FIG. 6 is a plan view showing the positional relationship between the sealing burner and the sealing burner 17-'. 11...Mount holder, 13...Insertion hole, 14...
... Sealing burner, 18... Putting plate, 22 River bending mechanism, 32... Sealing burner, 1o2... Stem,
103... Exhaust pipe, 1o4... Flare part, 105.
...Lead wire, 107...Glass bulb. Applicant's agent Patent attorney Takehiko Suzue 18-

Claims (1)

[Claims] A sealing burner is disposed coaxially on the outside of the mount holder that holds the stem, and heats and melts the abutting part between the flare part of the stem and the opening edge of the bulb valve. In a tube manufacturing device in which a putting plate for pressing a contact portion is provided so as to be able to reciprocate in the axial direction, the mount holder is provided with an insertion hole through which an exhaust pipe and a lead wire guided from the stem are commonly inserted. At the same time, the mount holder side is provided so that it can reciprocate in the axial direction independently of the stem, and the outside of this mount holder is connected to the lead wire when the mount holder is moved away from the stem. A bending mechanism is provided that allows the lead wire to move forward and backward, and bends the lead wire in a direction away from the exhaust pipe. A tube manufacturing device characterized by being provided with a sealing burner that cuts the seal.