CN203265891U - Electrode component used for ultrahigh-performance projection lamp - Google Patents
Electrode component used for ultrahigh-performance projection lamp Download PDFInfo
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- CN203265891U CN203265891U CN 201320242140 CN201320242140U CN203265891U CN 203265891 U CN203265891 U CN 203265891U CN 201320242140 CN201320242140 CN 201320242140 CN 201320242140 U CN201320242140 U CN 201320242140U CN 203265891 U CN203265891 U CN 203265891U
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- electrode
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- molybdenum sheet
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- projection lamp
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Abstract
The utility model relates to an electrode component used for an ultrahigh-performance projection lamp. The electrode component is formed by welding an electrode and a molybdenum sheet; a flat wolfram rod is arranged at the tail end of the electrode; the electrode is connected to one end of the molybdenum sheet through the flat wolfram rod in a laser welding manner. Compared with the prior art, the electrode component solves the problem that high-power electrodes can not be welded through laser welding, and the laser energy is controlled to be stable; the surface of the wolfram rod is flattened, so that the welding area is increased, and the molybdenum sheet is enabled not to be punched easily; the welding uniformity of the product is good, and the quality is ensured.
Description
Technical field
The utility model relates to a kind of electrode assemblie, especially relates to a kind of electrode assemblie for the very-high performance projection lamp.
Background technology
The strength problem of very-high performance projection lamp welding is one of difficult problem of puzzlement illumination electrode manufacturing enterprise always, prior art adopts up and down tungsten electrode discharge welding, being about to thick tungsten bar and molybdenum sheet is pressed between two electrodes, and impose electric current, resistance heat effect that workpiece contact-making surface and adjacent domain produce is heated fusing or mecystasis to utilize electric current to flow through, and makes it to form a kind of method of metal combination.Because the diameter of tungsten bar is thicker, cause electric current two contact-making surfaces of can not flowing through uniformly, this makes the product quality after welding be difficult to be guaranteed, and the uniformity of weld strength is very poor, specifically has following shortcoming:
(1) welding tungsten shank diameter is that the above electric resistance welding that uses of 0.8mm can not guarantee that weldment melts fully, causes the intensity of welding very unstable.
(2) electrode surface because discharge generation is uneven, needs cost manually to carry out in a large number reconditioning work.And can produce after useless electrode is discarded and pollute.
(3) after the annealing in hydrogen atmosphere in road was processed later, solder joint had obscission.
(4) when welding, extremely thick due to the relative molybdenum sheet of tungsten bar, and molybdenum sheet material (0.02mm) as thin as a wafer, the extruding of upper/lower electrode can cause the distortion of product.
(5) welding energy changes, and causes the product embrittlement, crosses weldering.
(6) product manual welding, single product is long weld interval, and efficiency is low.Weld size requires high, uses simple clamp tool can not guarantee the quality of welding.
The utility model content
The purpose of this utility model is exactly to provide a kind of electrode assemblie that is used for the very-high performance projection lamp that improves welding quality, guarantees product stability for the defective that overcomes above-mentioned prior art existence.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of electrode assemblie for the very-high performance projection lamp, this electrode assemblie is welded by electrode and molybdenum sheet, and the end of described electrode is provided with the tungsten bar of flat, and electrode is connected to an end of molybdenum sheet by the tungsten bar of described flat through laser weld.
The width of the tungsten bar of described flat is 0.8-2.5mm.
The weld seam of laser weld is positioned at the position of center line of the tungsten bar of flat.
Described molybdenum sheet is the molybdenum sheet of flat configuration or the molybdenum sheet of curved structure.
Laser weld belongs to fusion weld, passes through the laser emitting head take laser beam as the energy, impacts on the weldment joint.Laser beam can be guided by planar optical elements, with reflect focalization element or eyeglass, light beam is throwed in welded joints more subsequently, laser weld belongs to contactless welding, due to molybdenum sheet as thin as a wafer, easily bore a hole when causing welding, this is the technical problem of the most critical that solves of the utility model, is also advantage of the present utility model place:
(1) scope of welding diameter is 0.8mm-2.5mm, has solved the problem that laser weld can not be welded high-power electrode.
(2) control laser energy stable, processing is flattened on tungsten bar surface, has increased the area of welding, guarantees that again molybdenum sheet is difficult for being punched, and the Product jointing high conformity, and quality is guaranteed.
(3) need not use welding electrode, there is no electrode fouling or impaired misgivings.And because not belonging to the contact type welding processing procedure, the consume of product and distortion connect can be down to minimumly, has farthest guaranteed the uniformity of product.
(4) laser beam is easy to focus on, aim at and guided by optical instrument, can be placed on from the suitable distance of workpiece, and guide between facility that can be around workpiece or obstacle again, can aim at accurately weldment, and this is very crucial for our tungsten filament.
(5) equipment with the CCD checkout gear, guarantees the quality of product.
(6) equipment automatization production, efficient increases substantially.
(7) computer is controlled, and can switching device shifter laser beam be sent to a plurality of outgoing heads.
(8) due to the melting mutually of latter two article of welding, and the contact-making surface change is large, and it is better that the intensity of the product after annealing in hydrogen atmosphere becomes.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation that the utility model is installed.
In figure, 1 is that electrode, 2 is that tungsten bar, 3 is that molybdenum sheet, 4 is that molybdenum sheet fixture, 5 is that tungsten bar tool, 6 is the laser emitting head.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
Embodiment
A kind of electrode assemblie for the very-high performance projection lamp, its structure as shown in Figure 1, this electrode assemblie is welded by electrode 1 and molybdenum sheet 3, the end of electrode 1 is provided with the tungsten bar 2 of flat, the width of tungsten bar 2 is 0.8-2.5mm, electrode 1 is connected through laser weld with molybdenum sheet 3 through the tungsten bar 2 of flat, and the weld seam of laser weld is positioned at the position of center line of the tungsten bar 2 of flat.
During fabrication, molybdenum sheet 3 is fixing through molybdenum sheet fixture 4, that electrode 1 end arranges tungsten bar 2 is fixing through tungsten bar tool 5, then utilizes the laser that laser generator produces to pass through 6 outputs of laser emitting head, and electrode and molybdenum sheet 3 are welded to connect.Wherein, laser is produced the continuous single wavelength light beam of 1-8KW for the yttrium-aluminium-garnet crystal bar (Nd:YAG) that excites element by the neodymium in laser generator (ND).The wavelength of laser is 1.06 μ m, and the welding waveform is trapezoidal, and pulse width is 1.5.In manufacture process, laser generator carries out cooling processing by the external refrigeration unit, and operating temperature is constant in 30 ℃, and laser is connected to the laser emitting head by the multiple tracks flexible optical fibre.
The time of laser emitting is 1/2 seconds.How laser is by being connected to the laser emitting head to flexible optical fibre.Tungsten bar electrode cutting agency is recognized the direction blanking automatically, after fixing on tool, coordinates with molybdenum sheet on the main equipment clamping jig, arrives laser emitting head below and welds.The product automatic blanking that welding is good has been saved artificial.The weld strength of product is greater than 8 pounds, and bending power is greater than 5 pounds, and length tolerance can be controlled at+/-0.3mm, diameter tolerance is controlled at+/-0.01mm.Equipment is furnished with prosecution mechanism simultaneously, guarantees the quality of product, and is stable.
Because tungsten bar solder side before welding is flattened, be convenient to welding, be furnished with simultaneously accurate clamp tool, to guarantee that the welding position is at the center of tungsten bar (diameter is as more than 0.8mm); Equipment is furnished with optical fiber accurately, is furnished with gas shield to satisfy our electrode outgoing head, guarantees that oxidation does not occur the electrode of welding; The electrode product high-speed full-automatic is produced, and has greatly improved labor productivity, also guarantees effective welding of tungsten bar and thin molybdenum sheet, there is no simultaneously pore and embrittlement phenomenon.
The utility model has adopted the traditional electrode resistance solder technology of present use laser technology replacement very widely, and the thick tungsten bar of welding has been done flattened processing, no matter be on the efficient of device fabrication, on the processing technology of product, or on the stability of quality, be a kind of lifting for our prior art.
Claims (4)
1. electrode assemblie that is used for the very-high performance projection lamp, this electrode assemblie is welded by electrode and molybdenum sheet, it is characterized in that, the end of described electrode is provided with the tungsten bar of flat, and electrode is connected to an end of molybdenum sheet by the tungsten bar of described flat through laser weld.
2. a kind of electrode assemblie for the very-high performance projection lamp according to claim 1, is characterized in that, the width of the tungsten bar of described flat is 0.8-2.5mm.
3. a kind of electrode assemblie for the very-high performance projection lamp according to claim 1, is characterized in that, the weld seam of laser weld is positioned at the position of center line of the tungsten bar of flat.
4. a kind of electrode assemblie for the very-high performance projection lamp according to claim 1, is characterized in that, described molybdenum sheet is the molybdenum sheet of flat configuration or the molybdenum sheet of curved structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320242140 CN203265891U (en) | 2013-05-07 | 2013-05-07 | Electrode component used for ultrahigh-performance projection lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320242140 CN203265891U (en) | 2013-05-07 | 2013-05-07 | Electrode component used for ultrahigh-performance projection lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203265891U true CN203265891U (en) | 2013-11-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320242140 Expired - Lifetime CN203265891U (en) | 2013-05-07 | 2013-05-07 | Electrode component used for ultrahigh-performance projection lamp |
Country Status (1)
| Country | Link |
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| CN (1) | CN203265891U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104785925A (en) * | 2014-01-22 | 2015-07-22 | 上海亚尔光源有限公司 | Electrode molybdenum sheet assembly for ultrahigh-voltage point light source and forming method thereof |
-
2013
- 2013-05-07 CN CN 201320242140 patent/CN203265891U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104785925A (en) * | 2014-01-22 | 2015-07-22 | 上海亚尔光源有限公司 | Electrode molybdenum sheet assembly for ultrahigh-voltage point light source and forming method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131106 |
|
| CX01 | Expiry of patent term |