CN109742011A - The method of filament shaping device and filament shaping - Google Patents
The method of filament shaping device and filament shaping Download PDFInfo
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- CN109742011A CN109742011A CN201811648435.1A CN201811648435A CN109742011A CN 109742011 A CN109742011 A CN 109742011A CN 201811648435 A CN201811648435 A CN 201811648435A CN 109742011 A CN109742011 A CN 109742011A
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- filament
- electrode
- fixed
- clamping section
- fixed part
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Abstract
The present invention discloses a kind of filament shaping device, including workbench, electrode, pre-tightening apparatus, fixed device and conductive sizing bar；The pre-tightening apparatus includes pretightning force lock and prefastening force spring；Fixed device includes the first fixed device and the second fixed device, and the first fixed device includes the first clamping section, the first fixed part and the first bolt, and the second fixed device includes the second clamping section, the second fixed part and the second bolt；Electrode includes first electrode and second electrode；First fixed part is connected with first clamping section, and the first clamping section and the first bolt thread cooperate；First fixed part is mobilizable to be set in the first electrode, and pretightning force is locked in first electrode, and prefastening force spring is set to the end of first fixed part；Conduction sizing bar is located in the space that first clamping section and the second clamping section limit.The device can be well to filament shaping.The invention also discloses the methods using the filament shaping device to filament shaping.
Description
Technical field
The present invention relates to filament shaping technical fields.More particularly, to a kind of filament shaping device and filament shaping side
Method.
Background technique
Filament is the core component of electron tube, need to have long service life and high-temperature and high-presure resistent characteristic.
The structure of filament influences its service performance, and generation type then directly affects the stability and quality of its structure.
In the prior art, common filament shaping method is that pure tungsten cathode assembly is placed in bell-jar vacuum drying oven, right
Filament carries out connecing electricity, carries out vacuum pumping to bell-jar vacuum drying oven, when its vacuum degree is better than 3 × 103When Pa, lamp is begun to turn on
Heater current, is added to the rated operational current of filament, to achieve the purpose that sizing by silk power supply.The method is disadvantageous in that
Entire type-approval process is directly to carry out electrified regulation to entire filament, and heating temperature is more than 1350 DEG C, recrystallizes tungsten,
Its crystal grain loses original elongated shape, and becomes big block structure, and toughness reduces, and causes to be easy at filament leg
Brittle failure influences subsequent machining technology, causes machinability poor, yield rate is low.
Accordingly, it is desirable to provide a kind of new filament shaping device and method for shaping, to solve above-mentioned technical problem.
Summary of the invention
The first purpose of this invention is to provide a kind of filament shaping device, by setting pre-tightening apparatus in the device,
And then realize makes conductive sizing bar be in the exceptionally straight state tensed during filament shaping, prevents it from expanding during heating
Elongation, being bent downwardly deformation causes filament to deform, so that the filamentray structure for obtaining sizing is uniformly and stable, high yield rate.
Second object of the present invention is to provide a kind of method of filament shaping, the yield rate of party's legal type filament
Height, and filamentray structure is more evenly and stable.
In order to achieve the above first purpose, the present invention adopts the following technical solutions:
Filament shaping device, including workbench, electrode, pre-tightening apparatus, fixed device and conductive sizing bar；
The pre-tightening apparatus includes pretightning force lock and prefastening force spring；
The fixed device includes the first fixed device and the second fixed device, and the described first fixed device includes the first folder
Tight portion, the first fixed part and the first bolt, the described second fixed device includes the second clamping section, the second fixed part and the second spiral shell
Bolt；
The electrode includes first electrode and second electrode；
Wherein,
The first electrode and second electrode are set on workbench；
First fixed part is connected with first clamping section, and first clamping section and the first bolt thread cooperate；
First fixed part is mobilizable to be set in the first electrode, and the pretightning force is locked in first electrode,
For fixing or unclamping first fixed part, the prefastening force spring is set to the end of first fixed part；
Second fixed part is connected with second clamping section, and second clamping section and the second bolt thread cooperate；
Second fixed part is set in the second electrode；
The conductive sizing bar is located in the space that first clamping section and the second clamping section limit.
Preferably, the first electrode and second electrode are respectively anode and cathode.
Preferably, the material of the conductive sizing bar is tungsten.
Preferably, the filament shaping device further includes cover, and the cover is set on the workbench, the electrode,
Pre-tightening apparatus, fixed device and conductive sizing bar are located in the space that the cover and workbench limit.
Preferably, the filament shaping device further includes cover pressing device, and the cover pressing device is set to the work
Make on platform.
Preferably, the filament shaping device further includes vacuum evacuation device, and the vacuum evacuation device is by the cover and work
The space for making platform restriction is formed as vacuum space.
To reach above-mentioned second purpose, the present invention is adopted the following technical solutions:
A kind of filament shaping method, includes the following steps:
Filament is set on conductive sizing bar；
Apply the pretightning force towards conductive sizing bar direction to the first fixed part, prefastening force spring made to be in compressive state,
Pretightning force lock is locked, and conduction sizing bar both ends are separately fixed on the first clamping section and the second clamping section；
Removal pretightning force simultaneously unclamps pretightning force lock, and conductive sizing bar is made to be in straight condition；
Under hydrogen atmosphere, conduction sizing bar is electrically heated, to realize the sizing to filament.
Preferably, the filament and conductive sizing bar slide fit setting.
Preferably, conduction sizing bar is electrically heated using DC constant current power supply.
Preferably, the filament is identical as the conduction sizing material of bar, more preferably tungsten wire.
Beneficial effects of the present invention are as follows:
A purpose according to the present invention in filament shaping device provided by the invention, fixed is filled by setting to first
The pre-tightening apparatus pre-tightened is set, and then realize makes conductive sizing bar be in the exceptionally straight state tensed during filament shaping,
Prevent it from expanding elongation during heating, being bent downwardly deformation causes filament to deform.The setting of conduction sizing bar is so that the lamp
Silk shaping equipment is during carrying out shaping filament, it is ensured that the temperature of filament leg is lower than its recrystallization temperature, makes lamp
Good toughness at silk pin, machinability is good, and the filamentray structure that sizing obtains is uniformly and stable, high yield rate.According to the present invention
Second purpose, in filament shaping method provided by the invention, by applying pulling force to fixed conductive sizing bar, make at its
In the exceptionally straight state of tension, so that playing prevents conductive sizing bar from expanding elongation during heating, it is bent downwardly deformation and leads
The effect for causing filament deformation, avoid filament deform during the work time, turn-to-turn short circuit, improve filament in the devices reliable
Property.The heat transfer efficiency between conductive sizing bar and filament further preferably is can be improved into filament and conductive sizing bar slide fit setting, is protected
The temperature for demonstrate,proving filament leg in type-approval process is lower than its recrystallization temperature, when preventing high-temperature heating, pin tungsten wire recrystallization.
Detailed description of the invention
Specific embodiments of the present invention will be described in further detail with reference to the accompanying drawing.
Fig. 1 shows the structural schematic diagram of the filament shaping device in the embodiment of the present invention.
Fig. 2 shows filaments in the embodiment of the present invention to be set in the schematic diagram on conductive sizing bar.
Specific embodiment
In order to illustrate more clearly of the present invention, the present invention is done further below with reference to preferred embodiments and drawings
It is bright.Similar component is indicated in attached drawing with identical appended drawing reference.It will be appreciated by those skilled in the art that institute is specific below
The content of description is illustrative and be not restrictive, and should not be limited the scope of the invention with this.
On the one hand, one embodiment of the present of invention provides a kind of filament shaping device, as shown in Figure 1, the filament shaping fills
It sets including workbench 1, electrode, pre-tightening apparatus, fixed device and conductive sizing bar 5；
The pre-tightening apparatus includes pretightning force lock 41 and prefastening force spring 42；
The fixed device includes the first fixed device and the second fixed device, and the described first fixed device includes first solid
Determine portion 31, the first clamping section 32 and the first bolt 33, the described second fixed device includes the second fixed part 31 ', the second clamping section
32 ' and second bolt 33 '；
The electrode includes first electrode 21 and second electrode 22；
Wherein,
The first electrode 21 and second electrode 22 are set on workbench 1；
First fixed part 31 is connected with first clamping section 32,33 spiral shell of first clamping section 32 and the first bolt
Line cooperation；
First fixed part 31 is mobilizable to be set in the first electrode 21, and the pretightning force lock 41 is set to the first electricity
On pole 21, for fixing or unclamping first fixed part 31, the prefastening force spring 42 is set to first fixed part 31
End；
Second fixed part 31 ' is connected with second clamping section 32 ', second clamping section 32 ' and the second bolt
33 ' are threadedly engaged；
Second fixed part 31 ' is set in the second electrode 22；
The conductive sizing bar 5 is located in the space that first clamping section 32 and the second clamping section 32 ' limit.
It should be noted that first fixed part 31 is mobilizable to be set in the first electrode 21 in the present embodiment
Can be regarded as first fixed part 31 can be movable on perpendicular direction relative to first electrode 21, locking pretightning force lock 41,
First fixed part 31 can be fixed.Prefastening force spring 42 is set to the end on the first fixed part 31 far from the first clamping section 32
Portion, for being applied by pointer pull and push dynamometer 6 to the first fixed part 31 and deviating from electric-conduction when conduction sizing bar 5 is fixed
The power of type bar.At work, the setting of pre-tightening apparatus can make conductive sizing bar be in the exceptionally straight shape tensed to the filament shaping device
State prevents it from expanding elongation during heating, and being bent downwardly deformation causes filament to deform, thus keep filament shape uniform, it can
Processability is good.
In the present embodiment, the first fixed device and the second fixed device are electric installation, and material can be conventional for this field
The high voltage bearing conductive material with some strength.It can be realized in the energized state by fixed device, conduction sizing
Bar passes through fixed device and is electrically connected with electrode.In addition, first electrode 21 and second electrode 22 are respectively anode and cathode, thus real
The normal circulation of existing electric current.
Conduction sizing bar provides the effect of support force and heating when being mainly used for filament shaping.Its material can for
The conductive material of some strength.In a preferable example, the material of the conductive sizing bar 5 is tungsten.Generally due to filament
For tungsten wire, therefore when the material of conductive sizing bar is identical as filament, can effectively avoid in heating up process due to the two material
Filament caused by thermal expansion coefficient is different deforms.
In a preferable example, the filament shaping device further includes cover, and the cover is set on the workbench,
The electrode, pre-tightening apparatus, fixed device and conductive sizing bar 5 are located in the space that the cover and workbench limit.Cover
It can be quartz bell cover, stainless steel bell jar etc..
Further, in another preferable example, the filament shaping device further includes cover pressing device, the cover
Body pressing device is set on the workbench.Cover pressing device is for cover to be fixed and clamped on the table.
In a preferable example, the filament shaping device further includes vacuum evacuation device, and the vacuum evacuation device is by institute
It states the space that cover and workbench limit and is formed as vacuum space.
Furthermore, it is to be understood that filament shaping device further includes having its in conventional filament shaping device in the present embodiment
His component, such as the electrical control system with control panel, the air-breather with gas valve etc., this will not be repeated here.
On the other hand, another embodiment of the invention provides a kind of method of filament shaping, and the method use above-mentioned
Filament shaping device in embodiment, this method comprises the following steps:
Filament 7 is set on conductive sizing bar 5, as shown in Figure 2；
Apply the pretightning force towards conductive sizing 5 direction of bar to the first fixed part 31, prefastening force spring 42 is made to be in compression
State, locking pretightning force lock 41, and conduction sizing 5 both ends of bar are separately fixed at the first clamping section 32 and the second clamping section
On 32 '；
Removal pretightning force simultaneously unclamps pretightning force lock 41, and conductive sizing bar 5 is made to be in straight condition；
Under hydrogen atmosphere, conduction sizing bar 5 is electrically heated, to realize the sizing to filament 7.
In this method, after removing pretightning force, the prefastening force spring in compressive state is in elastic recovery state, thus right
Fixed conductive sizing bar applies pulling force, is at the exceptionally straight state of tension, and having further functioned as prevents conductive sizing bar from existing
Elongation is expanded in heating process, is bent downwardly the effect that deformation causes filament to deform.Obtained filamentray structure is uniform.In addition,
Heat-shaping is carried out under hydrogen atmosphere can effectively remove the oxide layer of filament surface.
In a preferable example, the filament 7 is identical as the conduction sizing material of bar 5, can effectively avoid heating at this time
The filament as caused by the two material thermal expansion coefficient is different deforms in temperature-rise period.Its material is preferably tungsten wire.
In a preferable example, biography between the two is can be improved in the filament 7 and conductive sizing 5 slide fit of bar setting at this time
The thermal efficiency when preventing high-temperature heating, because of the excessively high recrystallization of temperature at filament leg, makes to reduce toughness.
In a preferable example, conduction sizing bar 5 is electrically heated using DC constant current power supply.The mode of heating is,
To DC constant current power supply is applied between two electrodes, electric current further flows towards conductive sizing bar by fixed device, and conduction sizing bar will
Electric energy is converted to thermal energy, to realize the heating to conductive sizing bar.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention may be used also on the basis of the above description for those of ordinary skill in the art
To make other variations or changes in different ways, all embodiments can not be exhaustive here, it is all to belong to this hair
The obvious changes or variations that bright technical solution is extended out are still in the scope of protection of the present invention.
Claims (10)
1. filament shaping device, which is characterized in that including workbench, electrode, pre-tightening apparatus, fixed device and conductive sizing
Bar；
The pre-tightening apparatus includes pretightning force lock and prefastening force spring；
The fixed device includes the first fixed device and the second fixed device, and the described first fixed device is clamped including first
Portion, the first fixed part and the first bolt, the described second fixed device includes the second clamping section, the second fixed part and the second bolt；
The electrode includes first electrode and second electrode；
Wherein,
The first electrode and second electrode are set on workbench；
First fixed part is connected with first clamping section, and first clamping section and the first bolt thread cooperate；
First fixed part is mobilizable to be set in the first electrode, and the pretightning force is locked in first electrode, is used for
First fixed part is fixed or unclamps, the prefastening force spring is set to the end of first fixed part；
Second fixed part is connected with second clamping section, and second clamping section and the second bolt thread cooperate；
Second fixed part is set in the second electrode；
The conductive sizing bar is located in the space that first clamping section and the second clamping section limit.
2. filament shaping device according to claim 1, which is characterized in that the first electrode and second electrode are respectively
Anode and cathode.
3. filament shaping device according to claim 1, which is characterized in that the material of the conductive sizing bar is tungsten.
4. filament shaping device according to claim 1, which is characterized in that the filament shaping device further includes cover,
The cover is set on the workbench, the electrode, pre-tightening apparatus, fixed device and conductive sizing bar be located at the cover and
In the space that workbench limits.
5. filament shaping device according to claim 4, which is characterized in that the filament shaping device further includes cover pressure
Tight device, the cover pressing device are set on the workbench.
6. filament shaping device according to claim 4, which is characterized in that the filament shaping device further includes vacuumizing
The space that the cover and workbench limit is formed as vacuum space by device, the vacuum evacuation device.
7. using filament shaping device as claimed in any one of claims 1 to 6 to the method for filament shaping, which is characterized in that packet
Include following steps:
Filament is set on conductive sizing bar；
Apply the pretightning force towards conductive sizing bar direction to the first fixed part, so that prefastening force spring is in compressive state, lock
Pretightning force lock, and conduction sizing bar both ends are separately fixed on the first clamping section and the second clamping section；
Removal pretightning force simultaneously unclamps pretightning force lock, and conductive sizing bar is made to be in straight condition；
Under hydrogen atmosphere, conduction sizing bar is electrically heated, to realize the sizing to filament.
8. the method according to the description of claim 7 is characterized in that the filament and conductive sizing bar slide fit setting.
9. adding the method according to the description of claim 7 is characterized in that carrying out electricity to conduction sizing bar using DC constant current power supply
Heat.
10. the method according to the description of claim 7 is characterized in that the filament is identical as the conduction sizing material of bar, preferably
For tungsten wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811648435.1A CN109742011B (en) | 2018-12-30 | 2018-12-30 | Filament shaping device and filament shaping method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811648435.1A CN109742011B (en) | 2018-12-30 | 2018-12-30 | Filament shaping device and filament shaping method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109742011A true CN109742011A (en) | 2019-05-10 |
| CN109742011B CN109742011B (en) | 2021-07-06 |
Family
ID=66362921
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|---|---|---|---|
| CN201811648435.1A Active CN109742011B (en) | 2018-12-30 | 2018-12-30 | Filament shaping device and filament shaping method |
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| CN (1) | CN109742011B (en) |
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| JPH04303557A (en) * | 1991-03-30 | 1992-10-27 | Toshiba Lighting & Technol Corp | Filament coil molding device |
| US20030222466A1 (en) * | 2002-06-03 | 2003-12-04 | Schulte Gene H. | Device for inserting and removing lighting tubes |
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| CN202549797U (en) * | 2011-11-24 | 2012-11-21 | 天津兰普里克照明电器有限公司 | Filament shaping and purifying apparatus |
| KR20130093956A (en) * | 2012-02-15 | 2013-08-23 | 주식회사 새한텅스텐 | Apparatus for joining sleeve of filament |
| CN103469872A (en) * | 2013-09-10 | 2013-12-25 | 西北农林科技大学 | Mechanical flushing squatting pan |
| CN108505019A (en) * | 2018-06-12 | 2018-09-07 | 深圳先进技术研究院 | Heated filament fixture and hot filament deposit equipment and its application and the utensil obtained using it |
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2018
- 2018-12-30 CN CN201811648435.1A patent/CN109742011B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2078046U (en) * | 1990-11-01 | 1991-05-29 | 复旦大学 | Horizontal type shaped device for lamp filament of halogen-tungsten |
| JPH04303557A (en) * | 1991-03-30 | 1992-10-27 | Toshiba Lighting & Technol Corp | Filament coil molding device |
| US20030222466A1 (en) * | 2002-06-03 | 2003-12-04 | Schulte Gene H. | Device for inserting and removing lighting tubes |
| JP2008133521A (en) * | 2006-11-29 | 2008-06-12 | High Frequency Heattreat Co Ltd | Metal wire heater |
| CN101716963A (en) * | 2009-11-16 | 2010-06-02 | 济南吉利汽车有限公司 | Device and method for loading rod pieces in independent suspension system of vehicle |
| CN102582373A (en) * | 2011-01-06 | 2012-07-18 | 周立新 | System for quickly assembling and disassembling auxiliary tyre for motor vehicle |
| CN102427017A (en) * | 2011-11-24 | 2012-04-25 | 天津兰普里克照明电器有限公司 | Filament shaping and purifying apparatus and method thereof |
| CN202549797U (en) * | 2011-11-24 | 2012-11-21 | 天津兰普里克照明电器有限公司 | Filament shaping and purifying apparatus |
| KR20130093956A (en) * | 2012-02-15 | 2013-08-23 | 주식회사 새한텅스텐 | Apparatus for joining sleeve of filament |
| CN103469872A (en) * | 2013-09-10 | 2013-12-25 | 西北农林科技大学 | Mechanical flushing squatting pan |
| CN108505019A (en) * | 2018-06-12 | 2018-09-07 | 深圳先进技术研究院 | Heated filament fixture and hot filament deposit equipment and its application and the utensil obtained using it |
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| CN109742011B (en) | 2021-07-06 |
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Effective date of registration: 20230625 Address after: No. 1918, 16th floor, scientific research building, No. 13 Jiuxianqiao Road, Chaoyang District, Beijing 100015 Patentee after: CETC Ruishi Technology (Beijing) Co.,Ltd. Address before: 13 Jiuxianqiao Road, Chaoyang District, Beijing 100015 Patentee before: BEIJING VACUUM ELECTONICS Research Institute |