CN1126629C - Trough for soldering by jetting molten solder - Google Patents
Trough for soldering by jetting molten solder Download PDFInfo
- Publication number
- CN1126629C CN1126629C CN98123561A CN98123561A CN1126629C CN 1126629 C CN1126629 C CN 1126629C CN 98123561 A CN98123561 A CN 98123561A CN 98123561 A CN98123561 A CN 98123561A CN 1126629 C CN1126629 C CN 1126629C
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- China
- Prior art keywords
- pendular body
- soldering
- trough
- molten solder
- spring
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- Electric Connection Of Electric Components To Printed Circuits (AREA)
Abstract
The invention provides a trough for soldering by jetting molten solder makes the height of a jet to part fixed even if a jetting pressure is high, by holding both ends of a floating body by a spring, enabling a floating body to float only in the lateral direction, and restricting the floating in the longitudinal direction. Comparing with traditional trough for soldering by jetting molten solder, a jetting port set with a floating body which two ends fixed by a spring, so when a jetting pressure is high, a fixed height may can not be formed on top of the jetting.
Description
Technical field
The present invention is the relevant trough for soldering by jetting molten solder that is arranged at automatic soldering device.
Background technology
In automatic soldering device, be provided with the treating apparatus of fluxer, preheater, trough for soldering by jetting molten solder, cooler etc.Printed base plate through by fluxer coating solder flux, by preheater heat in advance, by trough for soldering by jetting molten solder adhere to scolder, by steps such as cooler coolings, carry out weld job.
When carrying out the welding of printed base plate, produce weldering sometimes at weld part and drip, stride bridge, the bad weld cases of welding etc. with automatic soldering device.
So-called weldering is dripped, be meant and on the lead-in wire tip of individual part, adhere to the horn shape scolder, weld when dripping and in a single day produce, then be applied in high-tension part, drip the most advanced and sophisticated discharge that produces from weldering, not only can destroy electronic component and printed base plate, and when the assembling e-machine, the scolder of its sharp-pointed horn shape also can injure staff's hand.
What is called is striden bridge, is meant at the adjacent attached scolder of weld part span, and in a single day produces on printed base plate when striding bridge that the part that do not need of conductor can form short circuit, and therefore, this kind has the e-machine of striding bridge and lose its function.
What is called is not welded, be meant at weld part not adhere to scolder fully, though or on the lead-in wire of the weld zone of printed base plate or electronic component, adhere to scolder, the scolder between weld zone and lead-in wire is separated.On printed base plate in case when taking place not weld, become no power between weld zone and the lead-in wire and e-machine can lose its function fully, and become loose contact between weld zone and the lead-in wire, it is big that resistance around here becomes, major accidents such as meeting breaking out of fire then.
The situation of above-mentioned failure welding just can take place when the treating apparatus of automatic soldering device is in inappropriate state.For example, when fluxer applies, produce uneven coating, or when preheater heats printed base plate in advance and all evenly do not heated, then produce failure welding.Especially the jet flow state and the failure welding of trough for soldering by jetting molten solder have much relations.
At trough for soldering by jetting molten solder, be provided with the jet flow flow bigger the first time jet blower and the jet flow fusion welding be jet blower more for the second time.From this first time big flow scolder that jet blower comes out invade in the difficult part that adheres to scolder of the corner of weld part or via hole etc., and realize fully welding.But for the first time the scolder flow of jet flow mouth is bigger, is easy to generate weldering and drips or stride bridge.Thus, with jet flow mouth for the second time stablize jet flow, revise weldering that the first time, the jet flow mouth was produced and drip or stride bridge.
When the welding of printed base plate, for avoiding producing not the situation of welding, indispensable first time, the jet flow mouth and for making the scolder flow bigger, was attempted various means.This kind means, be in nozzle or the nozzle top is provided with kinetoplast, drive unit with the outside makes this kinetoplast swing, the scolder that nozzle is sprayed becomes big (the special public clear 62-35857 of flow, special fair 5-85262), or the plate with hole is set on nozzle, make the fusion welding that blows up from this perforate become flow big (special public clear 63-15063).
Yet, make the trough for soldering by jetting molten solder of kinetoplast swing with drive unit, need drive units such as motor, therefore increased cost, and motor must be arranged near the nozzle, that is, near the trough for soldering by jetting molten solder that is positioned at high temperature, because the influence of heat makes the rotation instability of motor, or motor life is shortened.Again, use the trough for soldering by jetting molten solder of perforated panel, adhere to oxide solder in the hole on every side easily, and through changing the jet flow state in hole for a long time.
In view of above-mentioned, the applicant had once invented a kind of trough for soldering by jetting molten solder that does not use drive unit and be not easy to adhere to oxide solder.This invention has been awarded patent (speciallyying permit No. 1571242), and this kind trough for soldering by jetting molten solder is provided with shaft-like pendular body in nozzle, supports the two ends of this pendular body with spring, or at the two ends of pendular body stop part is installed and is supported.This kind is provided with the trough for soldering by jetting molten solder of pendular body, and be not only with low cost because of not using drive unit fully, and be not easy to adhere to oxide, can obtain jet flow state steady in a long-term.
Use the welding groove of this pendular body, though have above-mentioned advantage, with the trough for soldering by jetting molten solder (hereinafter referred to as spring pendular body welding groove) at spring swinging in the cross rest body two ends, when jet flow pressure reaches very high, to whole mentioned nozzle area, its jet flow top does not form certain height sometimes.In the welding of general printed base plate, though do not make jet flow pressure reach very high, via hole deeply time the as the superimposition printing substrate must make fusion welding invade deep in via hole, has to improve jet flow pressure sometimes.Like this, when improving jet flow pressure, in spring pendular body welding groove, it is certain that the height at its jet top can not keep sometimes.
Summary of the invention
The present invention is directed in the spring pendular body welding groove in the past, the indefinite problem of jet flow height of scolder is studied when improving jet flow pressure, finds as shown in Figure 6, be since the end of pendular body 5 separately towards upper and lower to moving due to (direction of arrow).That is when an end of pendular body lifted toward the top, along with this pendular body that lifts, fusion welding also upwards raise, and is higher than the jet flow of the other end of pendular body.Thus, the inventor be conceived to not make pendular body up and down direction move, make the height of jet flow to become a definite value, just finished the present invention.
Trough for soldering by jetting molten solder of the present invention in spraying the flow jeting port of fusion welding, is provided with pendular body abreast with the length direction of flow jeting port, it is characterized in that the pendular body two ends are being kept by spring, makes the pendular body only can be towards teeter, can not be towards longitudinal oscillation.
Among the present invention, though the two ends that keep pendular body with spring, the swaying direction of pendular body only limits to laterally, and it is swung longitudinally and is limited.
As the means of restriction pendular body, be to use leaf spring to longitudinal oscillation.That is leaf spring is vertically vibrating easily to the direction of plate face, but will not be parallel to the direction vibration of plate face.Therefore, swing at longitudinal direction, stand at the two ends of pendular body and establish leaf spring, and leaf spring is only vibrated at transverse direction in order to limit pendular body.
In the 1st embodiment, leaf spring is made it to become corrugated in a plurality of positions flexing, exist side by side and establish under the state of this corrugated blank spring, the one end is fixed in the end of pendular body, control device and the other end is fixed in.When so using the corrugated leaf spring, the swing of the longitudinal direction of pendular body is limited, and only can freely swing at transverse direction.
Again, in the 2nd embodiment, an end of flat leaf spring is fixed in the end of pendular body, the other end of leaf spring then remains in free state and controls device.
When the end that will be fixed in the flat leaf spring of pendular body remained in free state, pendular body was not swung at longitudinal direction only at lateral shake.
In the 3rd embodiment, the pendular body two ends are kept with helical spring, and with the two ends inside part of pendular body, keep with the hole of growing crosswise in next door.In the 3rd embodiment, because of the grow crosswise hole swing of pendular body, so the swing of longitudinal direction is limited along the next door.
Description of drawings
Fig. 1 is the oblique view of the 1st embodiment;
Fig. 2 is the major part amplification oblique drawing of the 1st embodiment;
Fig. 3 is the major part amplification oblique drawing of the 2nd embodiment;
Fig. 4 is the major part amplification oblique drawing of the 3rd embodiment;
Fig. 5 is the front cross-sectional view of the jet flow state in the explanation trough for soldering by jetting molten solder of the present invention;
Fig. 6 is the front cross-sectional view that the jet flow state in the spring mobile welding groove in the past is described.
The specific embodiment
Trough for soldering by jetting molten solder to the 1st embodiment is illustrated earlier.Trough for soldering by jetting molten solder, its flow jeting port 1 is made of a pair of nozzle plate 2,2 and side plate 3,3.The height of side plate 3,3 is a little more than nozzle plate 2,2.This is that the fusion welding from the flow jeting port ejection can be flowed out from nozzle plate.
At trough for soldering by jetting molten solder, be provided with pump and motor (not shown), because the effect of pump, fusion welding is sent here from the below, sprays from flow jeting port.On side plate 3,3, wear porosely 4,4, pass this hole and be provided with pendular body 5.The diameter in hole 4,4 is greater than the diameter of pendular body 5, and its size is not advisable for not harming freely swinging of pendular body 5.
Be fixed with leaf spring 6,6 at the two ends of pendular body 5.The leaf spring of the 1st embodiment is the corrugated in the bending of a plurality of positions, and its bending direction is a longitudinal direction.One end of this leaf spring then is fixed in the end of pendular body 5, and the other end is fixed in controls device 7,7.Control device 7 and be fixed in welding groove body (not shown).Leaf spring 6 is established state for upright, that is leaf spring 6 is arranged to the state parallel with the jet direction of fusion welding.Therefore leaf spring only can not vibrate at longitudinal direction in transverse direction vibration (arrow X).
Below, the spray regime to the fusion welding in the above-mentioned trough for soldering by jetting molten solder is illustrated.When starting the pump (not shown), as shown in Figure 5, fusion welding 8 is sent from the below, and from jet head piece 1 ejection, flows out from a pair of nozzle plate 2,2.At this moment, cause flows through in the next fusion welding from the below and is provided with pendular body 5, produces the casual eddy current of so-called card in the runner of pendular body rear portion (figure middle and upper part), when runner becomes sinuous flow, the fusion weld materials flow that the oncoming force is more violent makes pendular body swing brokenly up and down.But, kept because the leaf spring of establishing 6,6 founds at the two ends of pendular body, so it only in the left and right directions swing, can not be swung at above-below direction.Therefore, from the fusion welding 8 of flow jeting port 1 jet flow, blocked casual eddy current and formed turbulent flow, and become bigger fluctuating ripple by the swing of the left and right directions of pendular body.At this moment, from the top of the fusion welding of flow jeting port 1 jet flow, fully, always keep certain height towards the above-below direction swing of pendular body.So, the printed base plate (not shown) contacts with the jet flow ripple that becomes certain altitude, like this, can adhere to scolder in the printed base plate universe.
The trough for soldering by jetting molten solder of the 2nd embodiment as shown in Figure 3, at the two ends of pendular body 5, upright established flat leaf spring 9 and is fixed.The other end of flat leaf spring 9 is protected slidably holding and is controlled on the device 10.Control device 10 and be fixed in solder bath body (not shown), inside is the box-shaped in cavity.Control device 10, the part of its maintenance leaf spring 9 forms cracks 11, and leaf spring 9 can freely be come in and gone out.Therefore, in the trough for soldering by jetting molten solder of the 2nd embodiment, when pendular body 5 is swung at left and right directions (arrow X),, limited the swing of above-below direction so on one side Yi Bian crooked the discrepancy in what control device 10 of leaf spring 9 cracks 11.
The trough for soldering by jetting molten solder of the 3rd embodiment, as shown in Figure 4, the two ends of pendular body 5 are kept by helical spring 13.The helical spring other end is controlled device 15 being connected to.On side plate 3,3, be equipped with the grow crosswise hole 14 that diameter slightly big, transverse direction have abundant length of longitudinal direction size than pendular body 5.Therefore, when pendular body 5 is melted the mobile swing of scolder, the swing of longitudinal direction hole 14 restrictions of being grown crosswise, and only can swing at transverse direction (arrow X).
In addition, in an embodiment, the shape of pendular body all is that circular bar is represented with the cross section, is not limited to circular cross-section but be used in pendular body of the present invention, also can use the Any shape of oval cross section, two equilateral triangles, rhombus, rectangle etc.
As mentioned above, trough for soldering by jetting molten solder of the present invention, it is set at the pendular body in the flow jeting port, owing to can freely shake at transverse direction, and the swing of longitudinal direction is limited, so pendular body can not swung at longitudinal direction yet when jet flow pressure is very high.Therefore, the top of jet flow always can form certain height, when the welding printed base plate, can keep uniform contact condition for printed base plate, the phenomenon of failure welding can not occur, can weld reliably.
Claims (4)
1. trough for soldering by jetting molten solder in the flow jeting port of jet flow fusion welding, is provided with the pendular body that is parallel to the flow jeting port length direction, it is characterized in that the pendular body two ends are kept by spring, and this pendular body only can be swung at transverse direction, is limited in the swing of longitudinal direction.
2. trough for soldering by jetting molten solder as claimed in claim 1 is characterized in that, above-mentioned spring is a leaf spring, and this leaf spring is established state with upright, and an end is fixed in the end of pendular body, and the other end is fixed in controls device, and bends to corrugated in longitudinal direction at a plurality of positions.
3. trough for soldering by jetting molten solder as claimed in claim 1 is characterized in that, above-mentioned spring is a leaf spring, and this leaf spring is established state with upright, and an end is fixed in the end of pendular body, and the other end can remain in slidably in front and rear direction and control device.
4. trough for soldering by jetting molten solder as claimed in claim 1, it is characterized in that above-mentioned spring is a helical spring, this helical spring end is fixed in the end of pendular body, the other end is fixed in controls device, and the hole of growing crosswise that the two ends inside part of pendular body is worn on the side plate keeps.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31289397A JP3197856B2 (en) | 1997-10-30 | 1997-10-30 | Jet solder bath |
| JP312893/97 | 1997-10-30 | ||
| JP312893/1997 | 1997-10-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1216726A CN1216726A (en) | 1999-05-19 |
| CN1126629C true CN1126629C (en) | 2003-11-05 |
Family
ID=18034724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98123561A Expired - Fee Related CN1126629C (en) | 1997-10-30 | 1998-10-29 | Trough for soldering by jetting molten solder |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP3197856B2 (en) |
| CN (1) | CN1126629C (en) |
| TW (1) | TW383631U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2012570B1 (en) * | 2006-04-26 | 2011-10-19 | Senju Metal Industry Co., Ltd. | Jet solder tank |
| DE102012013209A1 (en) * | 2012-07-04 | 2014-01-09 | Erwin Quarder Systemtechnik Gmbh | Soldering nozzle for soldering device for soldering components having a number of solder joints to be soldered, comprises nozzle chamber and a device with which solder flow in flow area and contour of exiting soldering wave is influenced |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4463891A (en) * | 1981-11-18 | 1984-08-07 | Rca Corporation | Wave soldering apparatus and method |
| JPH0645744A (en) * | 1992-07-21 | 1994-02-18 | Matsushita Electric Ind Co Ltd | Jet system soldering device |
| EP0713742A1 (en) * | 1994-11-23 | 1996-05-29 | Electrovague | Injection device for inert gas, particularly nitrogen, for a wave soldering machine and wave soldering machine equipped with such a system |
| JPH08309520A (en) * | 1995-05-17 | 1996-11-26 | Tamura Seisakusho Co Ltd | Jet type soldering device |
-
1997
- 1997-10-30 JP JP31289397A patent/JP3197856B2/en not_active Expired - Lifetime
-
1998
- 1998-08-18 TW TW87213502U patent/TW383631U/en not_active IP Right Cessation
- 1998-10-29 CN CN98123561A patent/CN1126629C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4463891A (en) * | 1981-11-18 | 1984-08-07 | Rca Corporation | Wave soldering apparatus and method |
| JPH0645744A (en) * | 1992-07-21 | 1994-02-18 | Matsushita Electric Ind Co Ltd | Jet system soldering device |
| EP0713742A1 (en) * | 1994-11-23 | 1996-05-29 | Electrovague | Injection device for inert gas, particularly nitrogen, for a wave soldering machine and wave soldering machine equipped with such a system |
| JPH08309520A (en) * | 1995-05-17 | 1996-11-26 | Tamura Seisakusho Co Ltd | Jet type soldering device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11135933A (en) | 1999-05-21 |
| CN1216726A (en) | 1999-05-19 |
| JP3197856B2 (en) | 2001-08-13 |
| TW383631U (en) | 2000-03-01 |
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Granted publication date: 20031105 Termination date: 20091130 |