阅读说明：本技术 一种短弧汞灯及短弧汞灯分段收缩封接方法 (Short-arc mercury lamp and sectional shrinkage sealing method thereof ) 是由 蔡志国 张米好 黄林峰 张鹏 于 2019-10-12 设计创作，主要内容包括：本发明涉及短弧汞灯及短弧汞灯分段收缩封接方法,解决现有技术中的短弧汞氙灯的阳极与泡壳的灯管同心度偏差大,容易损坏问题。公开了一种金属中缝露色拉链及其制作方法,一种短弧汞灯分段收缩封接方法,包括有如下步骤：A：制作阳极组件石英套管：将阳极组件置于石英套管内；B：将石英套管的两端进行封口,对阳极组件进行氢还原处理,抽真空焊接封口；C：将阳极组件进行同心度的纠正,然后进行收缩：D:将多余的石英管切除；E：将阳极组件尾端与泡壳阳极侧尾端进行同心焊接；F：阴极组件组装,对泡壳阴极端封口,然后对电极组件进行氢还原处理后抽真空封口。所制作的短弧汞灯的阳极组件与泡壳的阳极侧保持同心,防止偏心导致的质量问题。(The invention relates to a short-arc mercury lamp and a method for sealing the short-arc mercury lamp by sectional shrinkage, which solve the problems that the concentricity deviation of an anode of the short-arc mercury xenon lamp and a lamp tube of a bulb shell is large and the short-arc mercury xenon lamp is easy to damage in the prior art. A method for sealing by contraction of short-arc mercury lamp includes following steps: a: manufacturing an anode assembly quartz sleeve: placing the anode assembly in a quartz sleeve; b: sealing two ends of the quartz sleeve, carrying out hydrogen reduction treatment on the anode assembly, vacuumizing, welding and sealing; c: the anode assembly was corrected for concentricity and then shrunk: d, cutting off redundant quartz tubes; e: concentrically welding the tail end of the anode assembly with the tail end of the anode side of the bulb shell; f: and (4) assembling the cathode assembly, sealing the cathode end of the bulb shell, then performing hydrogen reduction treatment on the electrode assembly, and vacuumizing and sealing. The anode assembly of the manufactured short-arc mercury lamp is concentric with the anode side of the bulb shell, so that quality problems caused by eccentricity are prevented.)

1. A short arc mercury lamp segmentation shrink sealing-in method, the said short arc mercury lamp includes the bulb, positive pole subassembly and negative pole subassembly located both ends in the bulb, the said positive pole subassembly include the positive pole, and seal the glass bead, there are bulb extraction openings on the bulb, characterized by that: the sectional shrinkage sealing method comprises the following steps:

a: manufacturing an anode assembly quartz sleeve: one end of the quartz sleeve is sleeved outside the anode, the other end of the quartz sleeve is sleeved outside the sealing glass beads, and one end of the quartz sleeve sleeved on the anode is provided with a quartz sleeve air exhaust port;

b: sealing two ends of the quartz sleeve, carrying out hydrogen reduction treatment on the anode assembly, and finally vacuumizing, welding and sealing;

c: the anode assembly was corrected for concentricity and then shrunk: shrinking from the center of the sealing glass bead to the direction of embedding the glass bead until the glass bead shrinks and covers the whole outer glass bead, and welding the sealing glass and the quartz tube;

d, cooling the anode assembly to be shrunk, and cutting off redundant quartz tubes along the center of the sealing glass bead towards the anode direction;

e: respectively correcting the concentricity of the bulb and the anode assembly which is cut off, pushing the anode assembly into the bulb, introducing nitrogen from the other side of the bulb, welding the tail end of the anode assembly with the tail end of the anode side of the bulb, and stopping introducing the nitrogen after the welding is finished and the anode assembly is cooled;

f: and (3) loading a cathode assembly from the cathode end of the bulb, then sealing the cathode end of the bulb, then carrying out hydrogen reduction treatment on the electrode assembly, and finally vacuumizing the bulb and sealing.

2. The sectional pinch sealing method for a short-arc mercury lamp according to claim 1, wherein: and F, after the bulb shell is vacuumized and sealed, conventionally shrinking the anode end of the lamp tube to bond the shrinking part of the anode assembly with the shrinking part of the bulb shell.

3. The sectional pinch sealing method for a short-arc mercury lamp according to claim 1, wherein: and F, after the bulb shell is vacuumized and sealed, the cathode end of the lamp tube is conventionally contracted, so that the contracted part of the anode assembly is bonded with the contracted part of the bulb shell.

4. The sectional pinch sealing method for a short-arc mercury lamp according to claim 1, wherein: and C, correcting the concentricity of the anode assembly on a lathe.

5. The sectional pinch sealing method for a short-arc mercury lamp according to claim 1, wherein: and E, correcting the concentricity of the bulb and the cut anode assembly on a lathe.

6. The sectional pinch sealing method for a short-arc mercury lamp according to claim 1, wherein: and E, preheating the tail end of the anode side of the bulb shell during welding.

7. A short-arc mercury lamp produced by the sectional shrinkage sealing method for a short-arc mercury lamp according to any one of claims 1 to 6, characterized in that: the sealing glass bead of the anode assembly is sealed with a quartz sleeve, the anode of the anode assembly is positioned in the vacuum bulb, the tail of the quartz sleeve is concentrically welded with the tail of the anode side of the bulb, and the cathode assembly is positioned on one side of the cathode in the bulb.

Technical Field

The invention relates to a short-arc mercury lamp and a sectional shrinkage sealing method thereof.

Background

Short arc mercury xenon lamps are electric light sources that use mercury vapor produced during mercury discharge to obtain visible light. The size and shape of the electrodes in the lamp directly affect the intensity of light, the service life of the lamp tube, and the like. In order to obtain higher power and longer service life of the lamp tube, the internal parts of the lamp tube, especially the anode, need to be further enlarged in the design and manufacture process. The increase of the electrode leads to the lamp tube in the sealing and shrinking process, because the electrode stretches into the bulb shell and is suspended, the electrode is pressed downwards under the action of gravity, and then the electrode component is driven to be integrally tilted upwards. So that the concentricity deviation between the electrode of the lamp tube and the side arm of the lamp tube is large. In the process of shrinking the sealed lamp, because the concentricity deviation between the electrode of the lamp tube and the side arm of the lamp tube is large, the lamp tube can be repeatedly corrected to meet the requirement of concentricity tolerance, and the correction action is excessive, so that microcracks are generated between the embedded glass beads and the sealed glass beads of the lamp tube arm, and the sealed molybdenum foil for conducting is pulled off. The problems of lamp arm breakage, lamp tube air leakage, lamp tube burst and the like in the subsequent use process of the lamp tube are caused.

Disclosure of Invention

The invention aims to solve the problems that the anode of a short-arc mercury xenon lamp in the prior art has large concentricity deviation with a lamp tube of a bulb shell and is easy to damage. The technical scheme adopted for solving the technical problems provided by the invention is as follows: a short arc mercury lamp segmentation shrink sealing-in method, the said short arc mercury lamp includes the bulb, positive pole subassembly and negative pole subassembly located both ends in the bulb, the said positive pole subassembly include the positive pole, and seal the glass bead, there are bulb extraction openings on the bulb, characterized by that: the sectional shrinkage sealing method comprises the following steps:

a: manufacturing an anode assembly quartz sleeve: one end of the quartz sleeve is sleeved outside the anode, the other end of the quartz sleeve is sleeved outside the sealing glass beads, and one end of the quartz sleeve sleeved on the anode is provided with a quartz sleeve air exhaust port;

b: sealing two ends of the quartz sleeve, carrying out hydrogen reduction treatment on the anode assembly, and finally vacuumizing, welding and sealing;

c: the anode assembly was corrected for concentricity and then shrunk: shrinking from the center of the sealing glass bead to the direction of embedding the glass bead until the glass bead shrinks and covers the whole outer glass bead, and welding the sealing glass and the quartz tube;

d, cooling the anode assembly to be shrunk, and cutting off redundant quartz tubes along the center of the sealing glass bead towards the anode direction;

e: respectively correcting the concentricity of the bulb and the anode assembly which is cut off, pushing the anode assembly into the bulb, introducing nitrogen from the other side of the bulb, welding the tail end of the anode assembly with the tail end of the anode side of the bulb, and stopping introducing the nitrogen after the welding is finished and the anode assembly is cooled;

f: and (3) loading a cathode assembly from the cathode end of the bulb, then sealing the cathode end of the bulb, then carrying out hydrogen reduction treatment on the electrode assembly, and finally vacuumizing the bulb and sealing.

The short-arc mercury lamp manufactured by the sectional shrinkage sealing method of the short-arc mercury lamp is characterized in that: the sealing glass bead of the anode assembly is sealed with a quartz sleeve, the anode of the anode assembly is positioned in the vacuum bulb, the tail of the quartz sleeve is concentrically welded with the tail of the anode side of the bulb, and the cathode assembly is positioned on one side of the cathode in the bulb.

The technical scheme for further limiting the invention comprises the following steps:

and F, after the bulb shell is vacuumized and sealed, conventionally shrinking the anode end of the lamp tube to bond the shrinking part of the anode assembly with the shrinking part of the bulb shell.

And F, after the bulb shell is vacuumized and sealed, the cathode end of the lamp tube is conventionally contracted, so that the contracted part of the anode assembly is bonded with the contracted part of the bulb shell.

And C, correcting the concentricity of the anode assembly on a lathe.

And E, correcting the concentricity of the bulb and the cut anode assembly on a lathe.

And E, preheating the tail end of the anode side of the bulb shell during welding.

Through the technical scheme, the invention has the beneficial effects that: the tail part of the anode component of the short arc mercury lamp manufactured by the sectional shrinkage sealing method is sealed with a quartz sleeve, and the tail part of the quartz sleeve is concentric with the tail part of the anode side of the bulb and then welded, so that the anode component and the anode side of the bulb are concentric, and the quality problem caused by the eccentricity of the anode component and the anode side of the bulb is prevented.

Drawings

Fig. 1 is a schematic view of a short-arc mercury lamp according to the present invention.

FIG. 2 is a schematic view showing the structure of the anode assembly placed in the casing in step A.

FIG. 3 is a schematic structural diagram of the welding of the sealing glass of the anode assembly and the quartz tube in step C.

Fig. 4 is a schematic structural diagram of the cut-off redundant quartz tube in step D.

Fig. 5 is a schematic structural diagram of the anode assembly and the bulb casing in step E.

Detailed Description

The present invention is further described with reference to fig. 1 to 5.

The invention relates to a sectional shrinkage sealing method of a short-arc mercury lamp, which comprises a bulb shell 1, an anode assembly 2 and a cathode assembly 3 which are arranged at two ends in the bulb shell, wherein the anode assembly comprises an anode 21 and a sealing glass bead 22, and a bulb shell air suction opening 11 is arranged on the bulb shell. The sectional shrinkage sealing method comprises the following steps:

a: manufacturing an anode assembly quartz sleeve 4: one end 41 of the quartz sleeve is sleeved outside the anode, the other end 42 of the quartz sleeve is sleeved outside the sealing glass bead, and one end of the quartz sleeve sleeved on the anode is provided with a quartz sleeve pumping hole 43; in this embodiment, the diameter of the inner ring at one end of the anode of the quartz tube is greater than the diameter of the anode by 2mm, and the diameter of the end sleeved outside the sealing glass bead is greater than the diameter of the sealing glass bead by 2 mm.

B: sealing two ends of the quartz sleeve, carrying out hydrogen reduction treatment on the anode assembly, and finally vacuumizing, welding and sealing; the hydrogen reduction treatment prevents high-temperature oxidation during welding the seal; the vacuumizing function is to form negative pressure in the quartz tube, and the welding can be inwards shrunk and welded firmly during welding.

C: the anode assembly is clamped on a lathe to correct concentricity and then contracts: shrinking from the center of the sealing glass bead to the direction of embedding the glass bead until the glass bead shrinks and covers the whole outer glass bead, and repeating the shrinking process for 4 times to weld the sealing glass and the quartz tube;

d, cooling the anode assembly to be shrunk, and slowly cutting off redundant quartz tubes along the center of the sealing glass bead towards the anode direction;

e: respectively clamping the bulb shell and the anode assembly which is cut off at the left end and the right end of a lathe, correcting the concentricity, slowly pushing the anode assembly into the bulb shell, introducing nitrogen from the other side of the bulb shell, slowly rotating the lathe, slowly preheating the tail end (close to a molybdenum foil support frame of the anode component) of the anode side 12 of the bulb shell by using oxyhydrogen flame, and slowly turning off the nitrogen. Slowly increasing the oxygen amount and increasing the temperature of oxyhydrogen flame; flatly pressing the tail end of the anode side of the bulb shell by using a carbon plate to stick the tail end of the anode assembly and the tail end of the anode side of the bulb shell together, repeating the flatly pressing action again to thoroughly stick the tail end of the anode side of the bulb shell and the outer surface of the quartz tube of the anode part, and stopping introducing nitrogen after welding is finished and cooled to prevent oxidation in the welding process;

f: the cathode assembly is loaded from the cathode end 13 of the bulb, the bulb cathode end is sealed, and the electrode assembly is then subjected to hydrogen reduction to prevent oxidation during bulb sealing. And finally, vacuumizing and sealing the bulb shell. In order to further ensure that the anode assembly is firmly assembled, after the bulb is vacuumized and sealed, the anode end of the lamp tube is conventionally contracted, the sealing glass bead at the anode end is contracted towards the outer glass bead, and the translation speed of contracted flame needs to be slowed down in the contraction process so as to ensure that the contraction part of the bulb and the contraction part of the anode assembly are adhered two by two. The above shrinking process was repeated 4 times. In order to further ensure that the cathode assembly is firmly assembled, after the bulb shell is vacuumized and sealed, the cathode end of the lamp tube is conventionally contracted, so that the contracted part of the anode assembly is bonded with the contracted part of the bulb shell.

The short-arc mercury lamp manufactured by the method for sealing and shrinking the short-arc mercury lamp in sections is characterized in that a sealing glass bead of an anode assembly is sealed and connected with a quartz sleeve, an anode of the anode assembly is positioned in a vacuum bulb, the tail part of the quartz sleeve is concentrically welded with the tail part of the anode side of the bulb, and a cathode assembly is positioned on one side of a cathode in the bulb.

While the present invention has been described in detail with reference to the specific embodiments thereof, it should not be construed as limiting the scope of the invention. Various modifications and changes may be made by those skilled in the art without inventive step within the scope of the present invention as described in the appended claims.