CN105312704A - Self-flowing type soldering method and system used for laser welding - Google Patents
Self-flowing type soldering method and system used for laser welding Download PDFInfo
- Publication number
- CN105312704A CN105312704A CN201510753822.1A CN201510753822A CN105312704A CN 105312704 A CN105312704 A CN 105312704A CN 201510753822 A CN201510753822 A CN 201510753822A CN 105312704 A CN105312704 A CN 105312704A
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- Prior art keywords
- tin
- send
- tube
- gravity flow
- flow soldering
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- 238000005476 soldering Methods 0.000 title claims abstract description 34
- 238000003466 welding Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 19
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 95
- 239000007791 liquid phase Substances 0.000 claims abstract description 34
- 239000007790 solid phase Substances 0.000 claims abstract description 26
- 229910000679 solder Inorganic materials 0.000 claims description 35
- 230000005484 gravity Effects 0.000 claims description 30
- 238000010438 heat treatment Methods 0.000 claims description 11
- 125000006850 spacer group Chemical group 0.000 claims description 4
- 238000004064 recycling Methods 0.000 claims description 2
- 230000008595 infiltration Effects 0.000 abstract description 2
- 238000001764 infiltration Methods 0.000 abstract description 2
- 238000005485 electric heating Methods 0.000 abstract 1
- 230000005855 radiation Effects 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 239000006071 cream Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/005—Soldering by means of radiant energy
- B23K1/0056—Soldering by means of radiant energy soldering by means of beams, e.g. lasers, E.B.
Abstract
The invention relates to a self-flowing type soldering method and system used for laser welding and relates to the technical field of laser automatic welding. The self-flowing type soldering method used for laser welding comprises the steps that solid-phase tin is converted into liquid-phase tin to be stored through an electric heating mode, and keeps in a liquid-phase state; and after the liquid-phase tin flows to a bonding pad, welding points are heated through laser, and the tin is infiltrated on the bonding pad well. Through combination of the tin in the liquid-phase state and laser radiation, the infiltration of the tin on the cold-state bonding pad is achieved effectively.
Description
Technical field
The present invention relates to Automatic laser welding technology field, be specifically related to a kind of gravity flow soldering method for laser weld and system.
Background technology
In process of manufacture, the most frequently used solder welding method is flatiron weldering and laser reflow weldering.
It is electric iron that flatiron welds general use instrument, and it is that weldment and the fusing point solder lower than weldment are heated to solder melt point jointly, in the infusible situation of weldment, solder fusing and infiltrate solder side rely on both the connection diffuseing to form weldment.Its principal character has following 3 points: a. solder melt point is lower than weldment fusing point; B. during welding, weldment and solder are heated to solder melt point jointly, solder fusing and weldment is non-fusible; C. the formation of solder joint relies on the wetting solder side of molten state, makes solder enter the gap of weldment, form a binder course, thus realize the combination of weldment by capillarity.When using electric iron, by power line, alternating current is added to the two ends of iron core, iron core is a kind of heating resistance wire, converting electric energy is become heat energy by it, by heat transfer, heat energy is passed on solder horn again, solder horn is heated, the solder horn of heat is leaned against the lead-in wire junction of pad and components and parts, heat two weldments, after two weldment solders side are heated to uniform temperature, by solder stick from solder horn opposite contact weldment, after solder stick has melted certain amount, remove solder stick, the welding portion of scolding tin wettable pads and weldment removes electric iron later, now weld, specifically see Fig. 1, in figure, the title of each respectively: 1. the lead-in wire of components and parts, 2. pad, 3. solder stick, 4. electric iron.
Laser reflow welding technology, it supplements the one of Reflow Soldering mode, is be expressed on pad by tin cream syringe, then utilizes laser beam direct irradiation welding position and produce heat tin cream is melted, and forming solder joint.This technology is applicable to: easy heat damage or components and parts easy to crack in other welding of a.; B. can remove some circuit line or add some element on the intensive circuit of components and parts, and without the need to heating whole circuit board; C. during welding, whole circuit board does not bear thermal stress, can not make circuit board warpage; D. weld interval is short, not easily forms thicker Intermetallic compound layer.
Above-mentioned two kinds of welding method Problems existing: 1. in flatiron weldering there be Problems existing: if a. maintains improper, solder horn easily corrodes, and causes solder horn to eat tin difficulty; B. rosin or faintly acid scaling powder must be used; C. pure manual welding, production efficiency is low.2. laser reflow weldering Problems existing has: a. preservation condition requires strict, and the shelf-life is short, need certainly under the environment of 5-10 DEG C, and under the condition do not broken a seal, useful life is 6 months, and normal temperature lower seal is preserved only can preserve 1 month; B. using method is more loaded down with trivial details, needs to make tin cream return to normal temperature at normal temperatures before Kaifeng, consuming time longer, needs to stir after rising again; Need be extruded on pad by tin cream with syringe when c. using, because tin cream contains a certain amount of scaling powder, solder joint easily subsides, and welding quality is deteriorated; D. the scaling powder composition in tin cream is more, easily forms bubble and causes solder joint expansion explosion that tin cream is splashed, drop on element surface, form unnecessary solder joint during backflow.
Summary of the invention
Object of the present invention is exactly the defect for prior art, provides a kind of gravity flow soldering method for laser weld and system.Thus effectively improve efficiency and the quality of Laser industryization production.
The technical solution used in the present invention is: a kind of gravity flow soldering method for laser weld, stores, and remain on liquid phase state after solid phase tin is transformed into liquid phase tin by electrically heated mode; Flow to after on pad by liquid phase tin, because pad is that cold liquid phase tin becomes solid phase solder joint, recycling laser butt welding point heats, and good the invading of tin is moistened on pad.
During conveying liquid phase state tin, controlled the flow of tin under liquid phase state by controlled pressure.
For a gravity flow soldering system for laser weld, comprise
Focus head, described focus head is for heating on Laser Focusing to solder joint;
Gravity flow soldering device, described gravity flow soldering device stores also from flowing to pad for solid phase tin being transformed into liquid phase tin.
Further preferred structure, described gravity flow soldering device comprises and send tin-tube support, is arranged on and send sending tin-tube body, be wrapped in and send the heating system of the electrical equipment on tin-tube body on tin-tube support.
Further preferred structure, described in send tin-tube support to comprise base plate and do not close gusset plate, described in send tin-tube body to pass base plate to be fixedly connected with base plate, described in send tin-tube body top to be arranged with nut to be connected with jacking of floor.Ensure in heating process, send tin-tube body can not fall under fluffing by the effect of rising-heat contracting-cold.
Further preferred structure, described in send tin-tube body and back plate connections to be provided with radiator structure, described radiator structure be on base plate with the louvre sending tin-tube body to be connected place to offer, described louvre edge send tin-tube body border to be evenly arranged.The Welding Structure being similar to point cantact effectively reduces send the heat of tin-tube body to sending tin-tube support to transmit, and both can ensure that heat leaks the phenomenon of waste, the situation that also can ensure to send tin-tube support overheated occurs.
Preferred structure further, described solid phase tin-tube, the tin storing tube of bottom and the tin that send of bottom sending tin-tube body to comprise top is bored, be connected with tin storing tube top bottom described solid phase tin-tube, be connected with sending tin cone top part bottom described tin storing tube, in described tin storing tube, be also provided with temperature thermocouple.
Further preferred structure, described in send tin to bore to comprise and send tin cone and be arranged at the screen pack sent in tin cone.
Further preferred structure, described screen pack comprises two-layer, and between be provided with spacer ring, the online portion of upper level filter is provided with trim ring.The two-layer screen pack screen pack spacer ring of a lot of pore is had to separate, compressing with screen pack trim ring makes it loosen again, for filtering the impurity in liquid phase state tin, thus effectively prevent impurity from blocking the aperture sending tin cone lower end, wherein send tin cone to be connected with tin storing tube by screw thread, regularly can split removing impurity wherein.
Preferred structure further, the upper end of described solid phase tin-tube is provided with helicitic texture.
Preferred structure further, described helicitic texture is connected with funnel structure.Solid phase tin ball is sent into from funnel structure, then delivers into tin storing tube by straight tube structure, and the tin that send screwing off portion after filling tin storing tube is bored.
Preferred structure further, described helicitic texture is connected with the snap joint can inserting tracheae.The snap joint can inserting tracheae can be screwed in is connected on helicitic texture, by tracheae, certain malleation or negative pressure are applied to the tin of liquid phase state in tin storing tube during conveying liquid phase state tin, thus the flow of tin under effectively controlling liquid phase state, the amount making the tin amount flow on pad reach regulation to require.
Tool of the present invention has the following advantages: low cost of manufacture, the machining accuracy of parts easily ensures, owing to extremely not holding yielding sheet parts, but have employed the not high and processing that is that easily ensure of processing request and weld, this effectively will realize being very helpful to whole body function; Can make " tin continues to remain on liquid phase state ", this is that existing Welding Structure can not reach; Can Real-Time Monitoring control the temperature of " tin of liquid phase state " in tin storing tube, thus adjust in real time, reach good control effects; Filter screen structure is provided with in mechanism, can effective impurity screening, and can regularly clear up, avoid the problem of blocking; Without the need to adding any scaling powder in welding process, avoid the problem that in laser reflow weldering, solder joint easily subsides and splashes; The item that solder additionally should be noted that without the need to other except keeping cleaning, using method is simple, solder long shelf-life; Without the need to special maintenance, there is not etching problem in whole device, greatly enhances productivity in conjunction with laser irradiation techniques.
Accompanying drawing explanation
Fig. 1 is the welding method schematic diagram of existing flatiron weldering;
Fig. 2 is the gravity flow soldering method schematic diagram of the present invention for laser weld;
Fig. 3 is gravity flow soldering device structural representation of the present invention;
Fig. 4 is gravity flow soldering device top view of the present invention;
Fig. 5 is that gravity flow soldering device A-A of the present invention is to sectional view;
Fig. 6 is solid phase tin-tube generalized section of the present invention;
Fig. 7 is solid phase tin-tube of the present invention and funnel structure connection diagram;
Fig. 8 is solid phase tin-tube of the present invention and snap joint connection diagram;
Fig. 9 is that the present invention send tin to bore generalized section.
In figure: 1-send tin-tube support (1-1-base plate, 1-2-gusset plate, 1-3-radiator structure), 2-send tin-tube body (2-1-solid phase tin-tube, 2-1-1-helicitic texture, 2-1-2-funnel structure, 2-1-3-snap joint, 2-2-nut, 2-3-tin storing tube, 2-4-send tin to bore, 2-4-1-send tin cone, 2-4-2-screen pack, 2-4-3-spacer ring, 2-4-4-trim ring, 2-5-temperature thermocouple), 3-electrical equipment heating system, the 4-the second balsaming lens, 5-the first balsaming lens, 6-fibre-optical splice.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail, is convenient to be well understood to the present invention, but they do not form restriction to the present invention.
A kind of gravity flow soldering method for laser weld of the present invention, stores after solid phase tin is transformed into liquid phase tin by electrically heated mode, and remains on liquid phase state; Liquid phase tin is flow to after on pad, because pad is that cold liquid phase tin becomes solid phase solder joint, now recycles laser butt welding point and heat, good the invading of tin is moistened on pad.
During conveying liquid phase state tin, controlled the flow of tin under liquid phase state by controlled pressure.
For a gravity flow soldering system for laser weld, comprise
Focus head, focus head is for heating on Laser Focusing to solder joint;
Gravity flow soldering device, gravity flow soldering device stores also from flowing to pad for solid phase tin being transformed into liquid phase tin.
As shown in Figure 2, gravity flow soldering device comprises and send tin-tube support 1, is arranged on and send sending tin-tube body 2, be wrapped in the electrical equipment heating system 3 sent on tin-tube body 2 on tin-tube support 1.Focus head comprises the fibre-optical splice 6 being arranged at top, the first balsaming lens 5 and the second balsaming lens 4 being arranged at inside.The invention is not restricted to the focusing of two panels balsaming lens.
As shown in Figure 3, the gusset plate 1-2 sending tin-tube support 1 to comprise base plate 1-1 and do not close, send tin-tube body 2 to be fixedly connected with base plate 1-1 through base plate 1-1.Tin-tube body 2 top is sent to be arranged with nut 2-2 and base plate 1-1 reinforces the connection.
As shown in Figure 4, tin-tube body 2 and base plate 1-1 junction is sent to be provided with radiator structure 1-3.Radiator structure 1-3 be on base plate 1-1 with the louvre sending tin-tube body 2 to be connected place to offer, louvre is along sending tin-tube body 2 border to be evenly arranged.
As shown in Figure 5, the tin that send of the solid phase tin-tube 2-1 sending tin-tube body 2 to comprise top, the tin storing tube 2-3 of bottom and bottom bores 2-4, be connected with tin storing tube 2-3 top bottom solid phase tin-tube 2-1, bottom tin storing tube 2-3 with send tin to bore 2-4 top to be connected, in tin storing tube 2-3, to be also provided with temperature thermocouple 2-5.
As shown in Fig. 6-Fig. 8, the upper end of solid phase tin-tube 2-1 is provided with helicitic texture 2-1-1.Helicitic texture 2-1-1 is connected with funnel structure 2-1-2.Helicitic texture 2-1-1 can also be connected with the snap joint 2-1-3 that can insert tracheae.
As shown in Figure 9, sending tin cone 2-4 to comprise send tin cone 2-4-1 to send the 2-4-2 of the screen pack in tin cone 2-4-1 with being arranged at.Screen pack 2-4-2 comprises two-layer, and between be provided with spacer ring 2-4-3, upper level filter net 2-4-2 top is provided with trim ring 2-4-4, and screen pack 2-4-2 is steel mesh.
Operation principle of the present invention: solid phase tin ball warp is sent in tin storing tube by sending the solid phase tin-tube on tin-tube body, the tin of liquid phase state is melted into after electrical equipment heating system heats to certain temperature, and remain on liquid phase state always, its temperature is monitored in real time by temperature thermocouple, subsequently via send tin coning tower tray to go out and deliver to be placed in focus head focus pad on; Laser through fibre-optical splice enter to be undertaken by the first balsaming lens after focus head first time focus on, carried out second time focusing again by the second balsaming lens after gather focus, the laser wherein dispersed enters after focus head through fibre-optical splice, focused on by the first time of the first balsaming lens and become directional light, directional light gathers focus by the focussing force of the second balsaming lens again.The tin of liquid phase state is delivered to after on pad after sending tin cone to flow out, and because pad is cold, the tin of liquid phase state becomes solid phase instantaneously, effect of impregnation is not good, now with the use of focus head, utilizes laser to irradiate, make pad temperature increase, the infiltration that tin can be good is on pad.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly belongs to those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (10)
1. for a gravity flow soldering method for laser weld, it is characterized in that: store after solid phase tin is transformed into liquid phase tin by electrically heated mode, and remain on liquid phase state; Flow to after on pad by liquid phase tin, recycling laser butt welding point heats, and good the invading of tin is moistened on pad.
2. the gravity flow soldering method for laser weld according to claim 1, is characterized in that: during conveying liquid phase state tin, controlled the flow of tin under liquid phase state by controlled pressure.
3., for a gravity flow soldering system for laser weld, it is characterized in that: comprise
Focus head, described focus head is for heating on Laser Focusing to solder joint;
Gravity flow soldering device, described gravity flow soldering device stores also from flowing to pad for solid phase tin being transformed into liquid phase tin.
4. the gravity flow soldering system for laser weld according to claim 3, is characterized in that: described gravity flow soldering device comprises and send tin-tube support (1), is arranged on and send sending tin-tube body (2), be wrapped in and send the electrical equipment heating system on tin-tube body (2) (3) on tin-tube support (1).
5. the gravity flow soldering system for laser weld according to claim 4, it is characterized in that: described in send tin-tube support (1) comprise base plate (1-1) and close gusset plate (1-2), the described tin-tube body (2) that send is fixedly connected with base plate (1-1) through base plate (1-1), described in send tin-tube body (2) top to be arranged with nut (2-2) and base plate (1-1) to reinforce the connection.
6. the gravity flow soldering system for laser weld according to claim 5, it is characterized in that: described in send tin-tube body (2) and base plate (1-1) junction to be provided with radiator structure (1-3), described radiator structure (1-3) is connected with sending tin-tube body (2) louvre offered in place for base plate (1-1) is upper, and described louvre is along sending tin-tube body (2) border to be evenly arranged.
7. the gravity flow soldering system for laser weld according to claim 4, it is characterized in that: described in send tin-tube body (2) to comprise top solid phase tin-tube (2-1), the tin storing tube (2-3) of bottom and bottom the tin that send bore (2-4), described solid phase tin-tube (2-1) bottom is connected with tin storing tube (2-3) top, described tin storing tube (2-3) bottom with send tin to bore (2-4) top to be connected, in described tin storing tube (2-3), to be also provided with temperature thermocouple (2-5).
8. the gravity flow soldering system for laser weld according to claim 7, is characterized in that: described in send tin to bore (2-4) to comprise sending tin cone (2-4-1) and being arranged at and send the screen pack in tin cone (2-4-1) (2-4-2).
9. the gravity flow soldering system for laser weld according to claim 8, it is characterized in that: described screen pack (2-4-2) comprises two-layer, and between be provided with spacer ring (2-4-3), upper level filter net (2-4-2) top is provided with trim ring (2-4-4).
10. the gravity flow soldering system for laser weld according to claim 7, it is characterized in that: the upper end of described solid phase tin-tube (2-1) is provided with helicitic texture (2-1-1), described helicitic texture (2-1-1) is connected with the snap joint (2-1-3) that funnel device (2-1-2) maybe can insert tracheae.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510753822.1A CN105312704B (en) | 2015-11-05 | 2015-11-05 | For the gravity flow soldering method and system of laser welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510753822.1A CN105312704B (en) | 2015-11-05 | 2015-11-05 | For the gravity flow soldering method and system of laser welding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105312704A true CN105312704A (en) | 2016-02-10 |
| CN105312704B CN105312704B (en) | 2018-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510753822.1A Active CN105312704B (en) | 2015-11-05 | 2015-11-05 | For the gravity flow soldering method and system of laser welding |
Country Status (1)
| Country | Link |
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| CN (1) | CN105312704B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108098251A (en) * | 2017-12-20 | 2018-06-01 | 重庆洛昂机械有限公司 | For the method for maintaining of safety-valve |
| CN108803449A (en) * | 2018-05-10 | 2018-11-13 | Tcl王牌电器(惠州)有限公司 | The device and method of monitoring inspection weldering fraction defective |
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| US5193738A (en) * | 1992-09-18 | 1993-03-16 | Microfab Technologies, Inc. | Methods and apparatus for soldering without using flux |
| DE10113471B4 (en) * | 2001-03-19 | 2005-02-17 | Highyag Lasertechnologie Gmbh | Method for hybrid welding by means of a laser double focus |
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| CN108098251A (en) * | 2017-12-20 | 2018-06-01 | 重庆洛昂机械有限公司 | For the method for maintaining of safety-valve |
| CN108803449A (en) * | 2018-05-10 | 2018-11-13 | Tcl王牌电器(惠州)有限公司 | The device and method of monitoring inspection weldering fraction defective |
| CN108803449B (en) * | 2018-05-10 | 2022-01-04 | Tcl王牌电器(惠州)有限公司 | Device and method for monitoring defective rate of welding inspection |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105312704B (en) | 2018-06-05 |
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