CN204975704U - Laser seal welded device - Google Patents
Laser seal welded device Download PDFInfo
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- CN204975704U CN204975704U CN201520288599.3U CN201520288599U CN204975704U CN 204975704 U CN204975704 U CN 204975704U CN 201520288599 U CN201520288599 U CN 201520288599U CN 204975704 U CN204975704 U CN 204975704U
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Abstract
The utility model provides a laser seal welded device, includes laser instrument, the horizontal outgoing of laser instrument light beam, concavees lens and convex lens expand laser beam and restraint and the collimation, improve laser beam's the characteristic of dispersing, a planar mirror makes horizontal transmission's the vertical downward propagation of laser beam, a diffraction optical element divide into four bundles with the incident beam, a laser focusing mirror is four focuses with four bundles of laser beam focus, and these four focuses are two distributions, every 2 focuses for X direction and Y direction welding seam are all in the middle of two focuses, distance and the distance between two in the same row between the bifocal equal that because burnt scatter of points is symmetrical for the welding seam, consequently when welding direction changed, the laser energy distribution of welding seam department can not change, can not influence welding quality yet.
Description
Technical field
The utility model belongs to laser seal welding technical field, relates to a kind of laser seal welding device, is particularly useful for sealing property and requires in the welding of high cavity body structure.
Background technology
Have various seal chamber structure in all trades and professions, such as medicine equipment, sensor, Aero-Space, microwave device etc. all need to use accurate seal chamber structure.Because material is more and more special, thickness is more and more thinner, and quality is more and more lighter, and to the requirement of outward appearance and more and more higher to air-tightness index request, traditional seal weld method more and more can not meet its requirement.Therefore laser seal welding is greatly developed.
Because the spot diameter of laser is little, Gaussian distribution feature etc., conventional laser seal welding requires that the rigging error between housing and cover plate is less than 100um, to reach good welding quality.This requirement on machining accuracy for housing and cover plate is higher, improves the cost of product.And the material had easily cracks in welding process.For microwave device, the housing of conventional cavity and the material of cover plate are sial.The crack sensitivity of silica-alumina material is very high, is very easy to crack.General in order to avoid cracking, add eutectic metal as filling solder, can crackle be reduced.But add after filling solder welding, weld appearance be uncontrollable, it is inconsistent to weld, penetrability and bath properties stable all not; And likely can reduce hot strength.
Summary of the invention
In order to solve conventional laser seal welding cover plate and housing processing more coarse, when the rigging error between cover plate and housing is larger, easily crack, be difficult to welding; And easily crack in some crack-sensitivity material welding processes, the utility model proposes a kind of symmetrical multifocal laser beam seal welding device.
The purpose of this utility model is achieved through the following technical solutions:
A kind of laser seal welding device, it comprises laser instrument, laser concavees lens, laser convex lens, plane mirror, diffraction optical element, laser condensing lens and protective lens thereof, air-breathing dust arrester and air intake duct, need cover plate and the shell of welding, it is characterized in that: described laser instrument is used for transmitting and has high-octane pulse laser; Described laser concavees lens and described laser convex lens are combined and are carried out beam-expanding collimation to described laser beam; So the described plane mirror laser beam of horizontal transmission is propagated straight down; The a branch of described laser beam outgoing of incidence is 4 bundle laser beams by described diffraction optical element, after described laser condensing lens and protective lens thereof, focal plane presents 4 focus points.
Laser concavees lens of the present utility model and laser convex lens carry out beam-expanding collimation to described laser beam, improve the divergence characterization of laser beam.
Diffraction optical element of the present utility model changes the wavefront state of laser beam, laser beam is divided into four bundles by a branch of, four bundle light are rendered as two column distributions, often show two-beam, the angle of the two-beam often arranged is equal with the angle between two row light beams, when needing change focus point to count with arranged distribution, then need to redesign the diffraction optical element described in changing.
The 4 bundle light that described diffraction optical element separates by laser condensing lens of the present utility model focus on focal plane, focus on final focal plane is also rendered as two column distributions, often be classified as two focuses, distance between two focuses often arranged is equal with the distance between two row focuses, when needing size or the operating distance adjusting laser facula, then need the laser condensing lens described in changing.
In laser seal welding device of the present utility model, diffraction optical element and laser condensing lens is selected according to the width of weld seam, on focal plane four focus points are made to become two column distributions, often row two focuses, need the weld seam between the cover plate of welding and shell to be in the centre of two described focuses, 4 focuses relative to X-direction and Y-direction weld seam all symmetrical, therefore when changing laser weld direction, the laser energy density of welded seam area remains unchanged, and does not affect welding quality.
In laser seal welding device of the present utility model; there is assisted inhalation dust arrester; the spark produced the effect of welding material due to high-octane laser in welding process splashes and siphons away by air-breathing dust arrester; be attached on laser radiation eyeglass to avoid splashing; destroy protective lens; affect the output of laser beam, the quality of the surface impact welding that it also avoid splashes simultaneously is attached to welding work pieces and outward appearance.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of laser seal welding device of the present utility model;
Fig. 2 is the distribution schematic top plan view of welding focus in welding work pieces commissure;
Fig. 3 is the sectional view of welding focus in welding work pieces commissure;
In figure, the implication of each mark is as follows:
1: laser instrument
2: laser concavees lens;
3: laser convex lens;
4: plane mirror;
5: diffraction optical element;
6: laser condensing lens and protective lens thereof;
7: focal plane;
8:X direction weld seam;
9:Y direction weld seam;
10:4 focus;
11: air-breathing dust arrester;
12: air intake duct
13: welded cover plate;
14: welding shell;
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in detail:
Fig. 1 shows the schematic diagram of laser seal welding device described in the utility model.Laser seal welding device is composed as follows: laser instrument 1, has high-octane pulse laser for launching; Laser concavees lens 2 carry out beam-expanding collimation to laser beam together with combining with laser convex lens 3; Plane mirror 4 makes the laser beam of horizontal transmission propagate straight down; The beam of laser beam exit of incidence is 4 bundle laser beams by diffraction optical element 5, after laser condensing lens and protective lens 6 thereof, focal plane 7 presents 4 focus points 10.The air intake duct 12 of air-breathing dust arrester 11 is placed near welded seam place; the various splashings produced in welding process are siphoned away; in order to avoid be attached in laser condensing lens and protective lens 6 thereof, also avoid splashing to be attached to welding work pieces on the surface, in order to avoid affect welding quality and outward appearance simultaneously.
4 focus points 10 on focal plane are in two column distributions, often row two focus points.Distance between distance often between row two focus points arranges with two is equal.In the laser weld of routine, require that welded cover plate 13 and welding shell 14 coordinate precision, the weld width between General Requirements welded cover plate 13 and welding shell 14 is less than 100um.When machining accuracy is inadequate time, the weld width between welded cover plate 13 and welding shell 14 can be greater than 100um.When being about 100um for weld width, generally the distance between often arrange two focus point centers is set to 200um, general welding spot size is 400-800um, keep equal at the laser energy density of Weld pipe mill like this, but the width that is heated then doubles, avoid the crackle produced due to the cold and hot cataclysm of commissure in welding process, it also avoid simultaneously welded cover plate 13 and welding shell 14 machining accuracy not enough and cause soldered wide too large time, in welding region, variations in temperature is excessive and be difficult to the problem of welding.
Fig. 2 is the schematic top plan view of welding focus in the distribution of welding work pieces commissure.Fig. 3 is then the sectional view of welding focus in welding work pieces commissure.As can be seen from Fig. 2 and Fig. 3, due to 4 focuses 10 distribute relative to X-direction weld seam 8 and Y-direction weld seam 9 all symmetrical, therefore welding direction change in, do not affect the distribution of laser energy density at welded seam area.
It is emphasized that this laser seal welding device does not do any pro forma restriction, every simple modification of carrying out according to technical spirit of the present utility model, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (6)
1. a laser seal welding device, it comprises laser instrument, laser concavees lens, laser convex lens, plane mirror, diffraction optical element, laser condensing lens and protective lens thereof, air-breathing dust arrester and air intake duct, need cover plate and the shell of welding, it is characterized in that: described laser instrument is used for transmitting and has high-octane pulse laser; Described laser concavees lens and described laser convex lens are combined and are carried out beam-expanding collimation to described laser beam; So the described plane mirror laser beam of horizontal transmission is propagated straight down; The a branch of described laser beam outgoing of incidence is 4 bundle laser beams by described diffraction optical element, after described laser condensing lens and protective lens thereof, focal plane presents 4 focus points.
2. laser seal welding device as claimed in claim 1, is characterized in that: described laser concavees lens and laser convex lens carry out beam-expanding collimation to described laser beam, improve the divergence characterization of laser beam.
3. laser seal welding device as claimed in claim 1, it is characterized in that: described diffraction optical element changes the wavefront state of laser beam, laser beam is divided into four bundles by a branch of, four bundle light are rendered as two column distributions, often show two-beam, the angle of the two-beam often arranged is equal with the angle between two row light beams, when needing change focus point to count with arranged distribution, then needs to redesign the diffraction optical element described in changing.
4. laser seal welding device as claimed in claim 1, the 4 bundle light that described diffraction optical element separates by described laser condensing lens focus on focal plane, focus on final focal plane is also rendered as two column distributions, often be classified as two focuses, distance between two focuses often arranged is equal with the distance between two row focuses, when needing size or the operating distance adjusting laser facula, then need the laser condensing lens described in changing.
5. laser seal welding device as claimed in claim 4, it is characterized in that: the weld seam between the cover plate of described needs welding and shell is in the centre of two described focuses, 4 focuses are relative to X-direction and Y-direction weld seam symmetry, therefore when changing laser weld direction, the laser energy density of welded seam area remains unchanged, and does not affect welding quality.
6. laser seal welding device as claimed in claim 1; the splashing produced in welding process siphons away by described air-breathing dust arrester; to avoid splashing the output being attached to and laser condensing lens and protective lens thereof affecting laser, it also avoid splashing simultaneously and be attached to welding work pieces surface and affect welding quality and outward appearance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520288599.3U CN204975704U (en) | 2015-05-07 | 2015-05-07 | Laser seal welded device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520288599.3U CN204975704U (en) | 2015-05-07 | 2015-05-07 | Laser seal welded device |
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| Publication Number | Publication Date |
|---|---|
| CN204975704U true CN204975704U (en) | 2016-01-20 |
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| CN201520288599.3U Active CN204975704U (en) | 2015-05-07 | 2015-05-07 | Laser seal welded device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105689890A (en) * | 2016-04-05 | 2016-06-22 | 沈阳工业大学 | Annular laser welding head and annular laser welding method |
| CN108115274A (en) * | 2016-11-29 | 2018-06-05 | 深圳中科光子科技有限公司 | A kind of laser-processing system and method |
| CN108247220A (en) * | 2018-01-31 | 2018-07-06 | 中国电子科技集团公司第三十八研究所 | A kind of laser of microwave components tears lid method open |
| CN108372362A (en) * | 2017-01-31 | 2018-08-07 | 罗伯特·博世有限公司 | Method for laser welding and laser welding apparatus for generating weld seam on the surface of material member |
-
2015
- 2015-05-07 CN CN201520288599.3U patent/CN204975704U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105689890A (en) * | 2016-04-05 | 2016-06-22 | 沈阳工业大学 | Annular laser welding head and annular laser welding method |
| CN108115274A (en) * | 2016-11-29 | 2018-06-05 | 深圳中科光子科技有限公司 | A kind of laser-processing system and method |
| CN108372362A (en) * | 2017-01-31 | 2018-08-07 | 罗伯特·博世有限公司 | Method for laser welding and laser welding apparatus for generating weld seam on the surface of material member |
| CN108247220A (en) * | 2018-01-31 | 2018-07-06 | 中国电子科技集团公司第三十八研究所 | A kind of laser of microwave components tears lid method open |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100176 Beijing Economic and Technological Development Zone, 1st Floor C, No. 14 Building, 156 Jinghai Fourth Road, Beijing Patentee after: Beijing Zhongke Radium Electronics Co., Ltd. Address before: 100176 Beijing Economic and Technological Development Zone, 1st Floor C, No. 14 Building, 156 Jinghai Fourth Road, Beijing Patentee before: BEIJING WANHENG LEITE MECHANICAL AND ELECTRICAL EQUIPMENT CO., LTD. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Laser seal welded device Effective date of registration: 20190213 Granted publication date: 20160120 Pledgee: Beijing Zhongke micro Intellectual Property Service Co., Ltd. Pledgor: Beijing Zhongke Radium Electronics Co., Ltd. Registration number: 2019990000122 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20220614 Granted publication date: 20160120 Pledgee: Beijing Zhongke Micro Intellectual Property Service Co.,Ltd. Pledgor: BEIJING ZHONGKE LEITE ELECTRONICS Co.,Ltd. Registration number: 2019990000122 |