阅读说明：本技术 提高车用卤素灯照度的玻壳的加工方法 (Processing method of glass bulb for improving illuminance of halogen lamp for vehicle ) 是由 何正安 赵国英 钱广源 于 2020-04-27 设计创作，主要内容包括：一种提高车用卤素灯照度的玻壳的加工方法,步骤：按玻壳的规格尺寸选择石英玻璃管并进行断切,得到玻壳坯；用富氧的且火苗细而尖的天然气火焰对玻壳坯的一端开口部位加热,加热中通过火焰的冲击力冲击加热区域而迫使一端开口部位缩口,得到一端缩口的玻壳；将一根排气管从玻壳一端的缩口处插入玻壳,再用趋于与接管形状相吻合的缩口盘挤压玻壳而成形出接管,当接管成形至其孔径与排气管孔径一致的程度时,玻壳与排气管连接；继续用添加纯氧的火苗细而尖的天然气火焰对接管与玻壳的接壤部位加热,且向玻壳方向挤压排气管,再朝着背离玻壳的方向拉排气管,使排气管与玻璃管间形成气密封接,使接管外形规整,得到玻壳成品。保障卤素灯的照度提升。(A processing method of a glass bulb for improving the illumination of a halogen lamp for a vehicle comprises the following steps: selecting a quartz glass tube according to the specification and the size of the glass shell and cutting to obtain a glass shell blank; heating an opening part at one end of the glass shell blank by using oxygen-enriched natural gas flame with thin and sharp flame, impacting a heating area by the impact force of the flame during heating to force the opening part at one end to be shrunk, and obtaining a glass shell with one shrunk end; inserting an exhaust pipe into the glass shell from a necking part at one end of the glass shell, extruding the glass shell by using a necking disc which tends to be matched with the shape of the connecting pipe to form the connecting pipe, and connecting the glass shell with the exhaust pipe when the connecting pipe is formed to the degree that the aperture of the connecting pipe is consistent with that of the exhaust pipe; and continuously heating the junction part of the pipe and the glass shell by using the natural gas flame with fine and sharp flame added with pure oxygen, extruding the exhaust pipe towards the glass shell, and pulling the exhaust pipe towards the direction away from the glass shell to form airtight sealing between the exhaust pipe and the glass pipe, so that the shape of the connecting pipe is regular, and thus the finished glass shell is obtained. The illumination of the halogen lamp is guaranteed to be improved.)

1. A processing method of a glass bulb for improving the illumination of a halogen lamp for a vehicle is characterized by comprising the following steps:

A) preparing a glass shell blank, selecting a quartz glass tube according to the specification and the size of the glass shell, and cutting to obtain the glass shell blank;

B) preparing a glass shell with a reduced mouth, heating the opening part at one end of the glass shell blank obtained in the step A) by using natural gas flame which is rich in oxygen and thin and sharp in flame, and impacting a heating area by the impact force of the flame in the heating process to force the opening part at one end to be reduced in mouth to obtain the glass shell with a reduced mouth at one end;

C) the glass shell is connected with the exhaust pipe, firstly, an exhaust pipe is inserted into the glass shell from the necking part at one end of the glass shell obtained in the step B), then, a necking disc which tends to be matched with the shape of the connecting pipe is used for extruding the glass shell to form the connecting pipe, and when the connecting pipe is formed to the degree that the aperture of the connecting pipe is consistent with that of the exhaust pipe, the glass shell is connected with the exhaust pipe;

D) and preparing a glass shell finished product, continuously heating the junction part of the pipe and the glass shell by using natural gas flame with fine and sharp flame added with pure oxygen, extruding the exhaust pipe towards the glass shell, pulling the exhaust pipe towards the direction deviating from the glass shell, forming airtight sealing between the exhaust pipe and the glass pipe, and regulating the appearance of the connection pipe to obtain the glass shell finished product.

2. The method for processing a glass bulb for improving the illuminance of a halogen lamp for a vehicle as claimed in claim 1, wherein the oxygen enrichment in step B) means that the oxygen content in the natural gas is more than 21%.

3. The method as claimed in claim 1, wherein the necking in step B) is performed by tapering an opening portion at one end of the glass envelope blank.

Technical Field

The invention belongs to the technical field of manufacturing of automobile light source parts, and particularly relates to a method for processing a glass bulb for improving the illumination of an automobile halogen lamp.

Background

The aforementioned halogen lamps for vehicles can be found in published chinese patent documents, such as CN100538995C (metal halogen lamp), CN101103436A (halogen lamp), CN101142654A (halogen lamp), CN101578685A (halogen incandescent lamp), CN203192768U (high performance long life halogen vehicle lamp), CN102792418B (halogen lamp for vehicle headlamp), CN101447393B (halogen lamp and manufacturing method thereof), CN102082066B (C-class halogen lamp), CN203192765U (anti-shock halogen vehicle lamp), CN103413753A (single end halogen lamp with support frame positioning hook), CN203744082U (halogen lamp for vehicle), CN204537986U (halogen lamp for vehicle), CN207082510U (halogen lamp for vehicle), CN207338301U (halogen lamp for vehicle), and CN207074643U (long life halogen lamp), and so on. Also found in foreign patent documents are, for example, US6536918B1, US20030102808A1, US4078188A, JP 50-65082A, WO2006/097058, WO2005/088675, etc.

From a reading of the patent literature not limited to the above, it is clear that the envelope is a very important and at the same time technically demanding component of the structural system of halogen lamps for vehicles

As known in the art, in order to ensure the versatility of the halogen lamp for vehicles, the standards such as GB15766.1-2008 and ECE R37 have clear technical index requirements for the external dimensions, the position dimensions of the filament, and various parameters of the bulb, such as electrical parameters, etc., and for the bulb manufacturers of halogen lamps for vehicles, as long as the bulb of the halogen lamp meets the requirements of the aforementioned standards, the product is qualified, and vice versa. However, taking a typical H4 lamp (automobile headlight, also called "headlight") as an example, the following technical problems have been troubling in the industry for a long time: the produced halogen lamp product for the vehicle obviously meets the national standard requirement of GB15766.1 and the European standard requirement of ECE R37, but when the halogen lamp product reaches a lamp factory or a whole vehicle factory and is distributed with the bulb of H4, the requirement of GB4599-1994 standard cannot be met, the most typical situation is that a III area of a light distribution test is unqualified, a light distribution screen has a plurality of test points, the whole vehicle factory pays most attention to a point 75R, because the illumination of the point 75R is easy to be low, and the illumination of the point 75R is mainly caused by the manufacturing process and the matching error of the lamp and the glass bulb serving as the whole bulb. In the case of a bulb, in order to increase the illuminance at 75R point, the current practice is to make the filament position of the bulb near the standard center value, which can increase the luminous flux of the bulb, but the increase of the luminous flux is limited by the life of the bulb.

The applicant tests and analyzes the halogen lamp for the vehicle for a long time and considers that the reason that the light distribution test does not meet the requirement of the maximum value in the area III is as follows: the cambered surface at the connecting pipe of the glass bulb is deformed too much, the coating head cannot fully cover the deformed area, and the cambered surface which is not covered by the opaque coating (namely the non-transparent coating) at the connecting pipe (also called as a top cover, such as CN 102792418B) can generate light refraction; the deformation of the connecting pipe is reduced, the coverage area of the opaque coating can be correspondingly reduced, the light shielding is reduced, the luminous flux of the bulb can be correspondingly improved by more than 3%, and the illumination of 75R points is improved by more than 20%.

As can be seen from the above description, the area of deformation of the pipe connection portion is large and must be compensated for by increasing the coverage area of the opaque coating, which blocks (blocks) the light output and reduces the illuminance at the 75R point. It is needless to say that the control of the deformation of the envelope and its connecting tube to the maximum extent during the processing is the key to solve the aforementioned technical problems, and the technical solutions to be described below are made in this context.

Disclosure of Invention

The invention aims to provide a method for processing a glass bulb for improving the illumination of a halogen lamp for a vehicle, which can effectively control the precision of the position where a connecting pipe is connected with the glass bulb and avoid the deformation of the connecting pipe so as to improve the illumination of a 75R point.

The task of the invention is completed in such a way that the processing method of the glass bulb for improving the illumination of the halogen lamp for the vehicle comprises the following steps:

A) preparing a glass shell blank, selecting a quartz glass tube according to the specification and the size of the glass shell, and cutting to obtain the glass shell blank;

B) preparing a glass shell with a reduced mouth, heating the opening part at one end of the glass shell blank obtained in the step A) by using natural gas flame which is rich in oxygen and thin and sharp in flame, and impacting a heating area by the impact force of the flame in the heating process to force the opening part at one end to be reduced in mouth to obtain the glass shell with a reduced mouth at one end;

C) the glass shell is connected with the exhaust pipe, firstly, an exhaust pipe is inserted into the glass shell from the necking part at one end of the glass shell obtained in the step B), then, a necking disc which tends to be matched with the shape of the connecting pipe is used for extruding the glass shell to form the connecting pipe, and when the connecting pipe is formed to the degree that the aperture of the connecting pipe is consistent with that of the exhaust pipe, the glass shell is connected with the exhaust pipe;

D) and preparing a glass shell finished product, continuously heating the junction part of the pipe and the glass shell by using natural gas flame with fine and sharp flame added with pure oxygen, extruding the exhaust pipe towards the glass shell, pulling the exhaust pipe towards the direction deviating from the glass shell, forming airtight sealing between the exhaust pipe and the glass pipe, and regulating the appearance of the connection pipe to obtain the glass shell finished product.

In a particular embodiment of the invention, oxygen enrichment in step B) means that the oxygen content in the natural gas is greater than 21%.

In another specific embodiment of the present invention, the necking in step B) is to taper an opening portion at one end of the glass shell blank.

According to the technical scheme provided by the invention, because oxygen-enriched flame impact is used and the necking disc is used for extruding the glass shell, the joint part of the connecting pipe and the glass shell and the deformation of the connecting pipe can be effectively controlled, and the illumination of a 75R point can be obviously improved.

Detailed Description

Example (b):

the processing method of the glass bulb for improving the illuminance of the halogen lamp for the vehicle comprises the following steps:

A) preparing a glass shell blank, selecting a quartz glass tube according to the specification and the size of the glass shell, and cutting to obtain the glass shell blank;

B) preparing a glass bulb with a necking, heating an opening part at one end of the glass bulb blank obtained in the step A) by using oxygen-enriched natural gas flame with oxygen content more than 21% and fine and sharp flame, impacting a heating area by the impact force of the flame in the heating process to force the opening part at one end to be necked to obtain the glass bulb with one end being necked, and forming a clamping end at the other end of the glass bulb by using a separate process;

C) the glass shell is connected with the exhaust pipe, firstly, an exhaust pipe is inserted into the glass shell from the necking position of one end of the glass shell obtained in the step B), then, a circular necking disc which tends to be matched with the shape of the connecting pipe and is just like the effect of a connecting pipe forming die is used for extruding the glass shell to form the connecting pipe, and when the connecting pipe is formed to the degree that the aperture of the connecting pipe is consistent with that of the exhaust pipe, the glass shell is connected with the exhaust pipe;

D) preparing a glass shell finished product, continuously heating the junction part of the pipe and the glass shell by using a flame which is added with pure oxygen, namely natural gas with oxygen content more than 21 percent and is thin and sharp, extruding the exhaust pipe towards the direction of the glass shell, pulling the exhaust pipe towards the direction deviating from the glass shell, forming airtight sealing between the exhaust pipe and the glass tube, and enabling the shape of the connecting pipe to be regular, thus obtaining the glass shell finished product.

In conclusion, the technical scheme provided by the invention overcomes the defects in the prior art, successfully completes the invention task and truly realizes the technical effects of the applicant in the technical effect column.