JPS5846553A - Manufacturing device of tube - Google Patents

Abstract

PURPOSE:To present a tube manufacturing device, capable of mounting even a mount for a bulb of external diameter thinner than of a general bulb and welding a thin bulb to a stem. CONSTITUTION:An inner cylinder member 12 is coaxially provided in an outer cylinder member 11 to form a burner main unit 10, and a flared part 103 of a stem is directly supported to the point end part of the burner main unit 10, then an exhaust pipe 102 is movably inserted into the inner member thus an exhaust pipe insertion hole 17 is formed, while a flame hole 18 for seal cutting of an exhaust pipe is opened to an internal surface of the insertion hole, further a gas passage 22, communicated to the flame hole, is provided between an internal peripheral surface of the outer cylinder member 11 and a peripheral surface of the inner cylinder member 12. The burner main unit itself is jointly provided with a function corresponding to a mount holder, and the necessity for the mount holder is eliminated, thus even a flared part of bore smaller by the space of the mount holder can be supported. Accordingly, even if a lamp is of particular diameter smaller than of a generally popularized lamp, sealing of the stem and seal cutting of the exhaust pipe can be continuously performed similarly to a lamp of general type, and work efficiency can be remarkably improved.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tube manufacturing apparatus that seals the pulp of a tube with a mount, replaces the inside of the pulp with gas, and cuts an exhaust pipe.

For example, in a fluorescent lamp, there is a sealing process in which a flare sv of a mounted stem is welded to the opening edge of a tubular pulp, and following this sealing process, the inside of the pulp is evacuated through an exhaust pipe protruding from the stem. However, through this exhaust pipe, mercury and inert crab
It goes without saying that there is an exhaust process that stops the +, but in recent years manufacturing equipment has been developed that allows both of these processes to be performed continuously on the same machine.

This device is equipped with a mount holder V that supports the stem attached to the head body, and a cylindrical holder V for sealing the exhaust pipe is installed in the burner mounting hole of this mount holder. A sealing burner is placed around the outer periphery to heat and melt the flared portion of the stem and the pulp opening edge, and a batting plate is installed to suppress heating and melting between these flared portions and the valve opening edge. A gas displacement head is disposed so as to be able to reciprocate in the l-axis direction, and furthermore, in a portion close to and facing the above-mentioned mount holder, the tip of the exhaust pipe is chucked in an airtight manner and the gas in the valve is replaced through this exhaust pipe. It has a laid out structure.

By the way, this type of equipment is used to manufacture the generally popular bulb diameters of 30 to 38 cm, but in recent years, in order to improve the efficiency of lamps, the bulb diameter has become even smaller. lamps are being developed. When using the above device to manufacture fluorescent lamps with small bulb diameters, the inner diameter of the putting plate needs to be slightly smaller than the outer diameter of the bulb, so naturally the outer diameter of the mount holder is also made smaller accordingly. There is a need to. However, since a chipping burner is inserted into the mount holder, it is difficult to reduce the diameter of the holder, which makes it difficult to reduce the diameter of the putting plate. There were mismatches such as the outer diameter of the mount holder being larger than the flare part, making it impossible to mount the stem.

The present invention was made based on these circumstances, and
The purpose is to provide a tube manufacturing device that can be attached to a mount for a valve whose outer diameter is smaller than that of a general valve, and which makes it possible to weld a valve with a smaller outer diameter to a stem. That is.

In other words, 1 the present invention has been made to achieve the above-mentioned objects.
The flare WjAyhr of the stem is directly supported by As, and this inner cylinder member has a shape 5 exhaust pipe insertion hole into which the exhaust pipe of the stem is loosely inserted. At the same time, a flame hole is provided on the inner surface of the exhaust pipe insertion hole for sealing and cutting the exhaust pipe, and a flame hole is provided on at least one of the inner peripheral surface of the outer cylinder member or the outer peripheral surface of the inner cylinder member. , V is characterized in that a gas passage connected to the flame hole is provided.

The present invention will be explained below based on an embodiment shown in the drawings.

In the figure, l is an exhaust head movable in the direction of arrow A,
A ring-shaped fastening rubber S is installed in the introduction hole z in the exhaust head °l. The inside of 111I4 on the outer peripheral end surface of this tightening rubber 1 is communicated with the pressure supply pipe 5, and when high pressure air is supplied into #14, the inner diameter of the tightening rubber S is reduced. exhaust pipe ioz
y It is designed to be tightly tightened and fixed. Also, introduction hole 2
is communicated with a gas replacement path 6, which is configured to perform flow exhaust, gas cleaning, and injection of mercury and inert gas through an exhaust pipe 1021.

On the other hand, in front of the exhaust head 1, a sealing head r movable in the direction of arrow A, either integrally with the exhaust head 1 or independently of each other, is arranged facing away from the exhaust head 1. A mounting hole 8 is formed in a portion of the sealing head 2 that directly faces the introduction hole 2, and a chipping burner 9 is installed in the mounting hole 8.
has been interpolated. Reference numeral 10 denotes the burner body, and the burner body 10 is constructed by coaxially fitting a metal inner cylinder member 11 into a ceramic outer cylinder S material 1. That is, the outer cylinder member 11 has the through hole 11 on the axis.
The through hole 11 has a cylindrical shape, and the tip side of the through hole 11 is formed to have a small diameter. Therefore, a step s14 that bulges inward is formed on the inner surface of the through hole 75.
The inside inserted into the through hole is on the end face of 11flA14 *
The insertion end surface of ll#7J is in contact. Further, a tapered support surface 7j is formed on the periphery of the photoelectric portion of the outer cylinder member 11. This support surface III fits into the inner surface of the flare @ 103 of the mount 101 and flares! Iio:
It is designed to determine the position of I. Further, this outer cylinder member 11 has a lead wire 1 led out from one stem 104.
01aj01 is inserted through the lead wire insertion hole t6゜16, and these lead wire insertion holes 111m1
g are located opposite to each other on both sides of the through hole ixv.

・Also, on the axis of the inner cylinder member 12, an exhaust pipe insertion hole J'F into which the exhaust pipe 102 is loosely inserted is modified to be penetrating.
A plurality of flame holes 18 are opened at intervals r in the circumferential direction on the inner circumferential surface of the tip side of the exhaust pipe insertion hole 17. A plurality of concave grooves are provided at intervals in the circumferential direction on the distal end surface of the groove, one end of which is open to the outer circumferential surface of the inner # member 12 and the other end of which is open to the inner circumferential surface of the exhaust pipe insertion hole 17. It is composed by:

In addition, the inner cylinder member 2 is opened to a small diameter except for the exhaust head @ end 81, and this small diameter 819 outer peripheral surface and the through hole J'!
A gap 820 is formed between the inner peripheral surface and the inner peripheral surface. During this time l
! 1Ji20 is connected to the flame hole 18 on the light weight side, and is also connected to the gas supply pipe 2 at the end on the exhaust head side, so that during this time Mz
v- is gas r in the flame hole 18... in the burner body l#.
Gas supply path for supply T: Ijll: is configured.

On the other hand, an annular sealing burner 21 is attached to the front surface of the sealing head 2, and this sealing purl 11 is arranged coaxially around the outer periphery of the chipping burner 9. The sealed burner 11 is equipped with a large number of flame holes 14 toward the outer peripheral edge of the tip of the flare 1118H, and
A gas passage 11f connected to the flame holes 14 is formed between the sealing head r and the flame hole 14. Furthermore, this gas passage z
5 is connected to a gas supply pipe 16.

In addition, a ring-shaped putting plate 28 is disposed in a space zr surrounded by the front surface of the sealing head r and the inside of the sealing burner 11.
1 is located coaxially around the outer periphery of the chipping burner 9. This putting I! 21 is connected to a pressing plate 29 via a rod (not shown), and this pressing plate -
A flare Wlt is caused from inside the space 1r along the axial direction of the chipping burner 9 by bringing out # to the sealing bed side.
It is set to advance to el1g.
゛The symbol 1att in the i11 diagram is a straight glass bulb that is supported horizontally by a bulb holder so that its opening Ils directly faces the peripheral edge of the flare @IOI% 10f
l is coated on the inner surface of the bulb 106 - phosphor coating l
O8 is a filament coil.

The reference numeral 106 in the first fItJ is a straight glass bulb 10F, which is horizontally supported by a bulb holder so that its opening edge directly faces the peripheral edge of the flare tube 103.
108 is a filament coil, and 108 is a broken phosphor film adhered to the pulp l06P'3 surface.

Next, the operation of the above configuration will be explained in detail T;o.

The exhaust head 1 and the sealing head 7 are placed on the machint 101 while being moved integrally or independently from each other in a direction opposite to the red stamp insertion direction. In this case, the exhaust pipe is 1oz”y
The support surface 15 of the burner body IO is passed through the exhaust pipe insertion hole 1'1 of the burner body JO, and its tip is introduced into the introduction hole 1' of the exhaust~rad l, and at this time, the lead wire tol
elO1 through lead wire insertion hole t6. Penetrate inside ii.

When the inner circumference of the flare 1lIlOJ of the mount 7 101 contacts and matches the support/support 15 of the burner body 10, the tightening rubber 1 is reduced in diameter by 1%, and the exhaust pipe 10 is
Tighten and fix 1. Therefore, the macanto 101 is directly supported by the burner body IO. After such operation, the valve 'i o g is supported by the valve holder II! It is sent along the direction of arrow B in FIG. 1 to the illustrated position and stops there and waits.

Next maun) 707! Move the supported exhaust air Rad 1 and sealing head Fv in the direction of the arrow.

The peripheral edge S of the flare 1#1 is brought into contact with the opening edge S of the valve 1g1g. Subsequently, when the sealed burner 21 is ignited, the gas flame ejected from the flame hole 24...
- towards the contact between the flare 910M and the flare 910M, these pain m1
at-heat and melt ◇.

Along with this melting, the valve 10- and the flare @JOB are sealed, but in this sealing process, the pressure @1
Move the polisher forward in the direction of the arrow.

Then, the putting board 2a rushes toward the flare @101 side, and flares with the heated and melted pulp 10g! B
Contact with J o J! Press lightly on I11 to promote mutual familiarization of the glasses. In this way pulp IO
6) After the arrival of 701 is completed, the sealing burner 2
3 and exhaust the inside of the pulp 106. At this time, the leads IIjfios and ios led out from the open end of the lead edge insertion hole 16.16 are energized, and the filament coil 1081 is turned on. The coating substance applied to the IO 8 is decomposed and the adsorbed impurities are released, ie, so-called flushing is performed. After that, mercury and a filling gas are sealed into the pulp lQc through the gas exchange path 5 and the exhaust pipe 102.

After this, the chipping burner 9 is ignited, and the flame hole 18...
A gas flame is ejected into the exhaust pipe insertion hole 11 from the exhaust pipe insertion hole 11. The steel and the 1 oz portion of the exhaust pipe exposed to the gas flame are heated and melted. When only one exhaust head l is moved in the direction opposite to the manual direction of the arrow during this melting, the exhaust pipe 102 is expanded in the melted portion, and at this time the molten glass is squeezed and closed, so that the exhaust pipe 101 is The seal is cut off.

According to such a manufacturing apparatus C, a support surface 75m1 for supporting the flare @lag is formed on the distal end surface of the outer cylinder member 11 of the Tetsubing Paraku.

Since the chipping burner 9 is made to directly support the mount 101, the chipping burner itself functions as a conventional mount holder. Even if the diameter of the flare 510M is small, it can be reliably supported by the sealing head i. Therefore, even if it is a special fluorescent lamp with a pulp diameter of less than 30cm, the sealing of the 181 and the exhaust pipe 101 are similar to the generally popular fluorescent lamps with a bulb diameter of 30m5 to 38cm. Sealing cutting [It has the advantage of being able to be performed continuously and greatly improving work efficiency. Moreover, the inner cylinder member 12
This small diameter sl# and the outer cylinder member 11
Since the gap 20 formed between the gas supply passage 21 and the through hole 13 of Along with.

This is more advantageous in terms of reducing the diameter of the burner body 10.

In addition, this device is generally used for reading 30 popular pulp books.
- It can also be applied to the manufacture of the above fluorescent lamps.Especially in this case, the support surface 15 comes into contact with a portion of the flare portion 103 whose outer peripheral edge area also extends far into the radial direction V3111, and the force T also causes the flare to flare. When heating the outer periphery of the @ion, the proportion of heat absorbed by the support surface 15 at the outer periphery is reduced. Therefore, the outer peripheral edge of the flare stag is heated and melted in a short time, and is also heated uniformly in the circumferential direction, which has the advantage of preventing the occurrence of cracks and the like.

In addition, in the above embodiment, a small diameter portion was provided on the outer periphery of the inner cylindrical member after forming the gas supply passage, but a large diameter portion may be formed on the inner surface of the through hole of the outer cylindrical member, or the inner cylindrical member A small diameter 11 may be provided on the outer periphery of the through hole, and a large diameter ff1v may be formed on the inner surface of the through hole of the outer cylinder member, and a gas passage may be formed between the small diameter portion and the large diameter portion.

Further, the bulb manufacturing apparatus according to the present invention can be applied to a lamp equipped with a mount having the above-mentioned configuration, such as a general incandescent light bulb.

In the present invention described in detail above, the tip nAs of the burner body, which is formed by coaxially providing a cylindrical member within the outer cylindrical member, supports the frame ilv[Ii of the stem, and the inner cylinder 111t
An exhaust pipe insertion hole ytl/I is formed into which the exhaust pipe is loosely inserted, and a flame hole for cutting the exhaust pipe material is formed on the inner surface of this insertion hole, and the inner peripheral surface of *m*t outside *m*t is A gas passage connected to the elongated hole is provided between the outer peripheral surface of the cylindrical member and the outer peripheral surface of the cylindrical member.

According to this product, the burner itself is compatible with the conventional mount holder! Since it also has the function of tilting, there is no need for a mount holder, and even a flare with a small diameter can be supported.

Therefore, even if it is a special lamp whose bulb diameter is smaller than that of commonly used pumps, the stem sealing and exhaust pipe sealing and cutting can be carried out in succession in the same way as for general lamps, and can be done in one operation. Efficiency is significantly improved. However, there is no gas supply route! ! This is because it is provided at the abutment surface between the ll material and the inner member.

The gas supply passage into the burner body can be easily formed, and this has excellent effects such as being extremely convenient in reducing the diameter of the burner body.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, FIG. 111 is an overall sectional view, and FIG. 2 is an enlarged sectional view taken along the edge 1-1 in FIG. 10... Burner body, 11... Outer cylinder member, 12...
・Inner cylinder member, tti-...support surface, 1B...lead edge insertion hole, 12...exhaust pipe insertion hole, itt...flame hole, 22...gas passage C gas supply path)% 2J...Sealed burner.

Claims (1)

[Claims] A support surface is formed at the tip of the burner body, which has an inner cylinder member disposed coaxially within the outer cylinder member, to abut against the inner surface of the flared part of the Sumem and support the stem. A sealing burner is arranged around the periphery of the flared portion of the stem and the opening of the glass pulp for the bulb is welded by contact SV, and the outer cylinder member has a lead wire through which the lead wire led out from the stem is passed. In addition, an exhaust pipe insertion hole is formed in the cylindrical member, into which the exhaust pipe led out from the stem t11 is loosely inserted, and the inner surface of the exhaust pipe insertion hole has a flame directed toward the exhaust pipe. A flame hole is opened for ejecting and sealing the exhaust pipe, and at least one of the inner circumferential surface of the outer cylinder member or the inner circumferential surface of the cylindrical member that abuts the inner circumferential surface of the outer cylinder member is formed. A tube manufacturing apparatus characterized in that one side is provided with a gas passage for gas supply connected to the above-mentioned hole.