CN201312442Y - Boss lateral tin-spilling kettle spout - Google Patents
Boss lateral tin-spilling kettle spout Download PDFInfo
- Publication number
- CN201312442Y CN201312442Y CN 200820216483 CN200820216483U CN201312442Y CN 201312442 Y CN201312442 Y CN 201312442Y CN 200820216483 CN200820216483 CN 200820216483 CN 200820216483 U CN200820216483 U CN 200820216483U CN 201312442 Y CN201312442 Y CN 201312442Y
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- tin
- spilling
- hole
- kou
- utility
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Abstract
The utility model relates to a tin stove part for soldering PCBA board, in particular to a boss lateral tin-spilling kettle spout, which comprises a base body and an inserted hole, wherein a step is formed between the base body and the inserted hole, a tin-spilling hole is provided on the base body, and the tin-spilling hole is a triangular opening. The utility model with a simple structure is capable of effectively improving soldering efficiency and adaptable to large-scale automatic production. The utility model can effectively prevent oxide layer on the surface layer of tin liquids from remaining on the surface of PCBA board, thereby guaranteeing the quality of soldering joints.
Description
Technical field
The utility model relates to a kind of tin stove parts of the PCBA of being used for boards solder, especially a kind of lug boss side tin overflowing pot opening.
Background technology
Common wave-soldering adopts manual operations usually, and production efficiency is lower, for the comparatively intensive PCBA plate of need pad, this welding manner is more inadequate, in addition, because stannum export too small (generally long 2 millimeters), can bring the obstruction of scruff, thereby cause the large tracts of land of rosin joint to produce Hu Kou; At the comparatively intensive PCBA plate of pad, the kettle of employing mouth structure is also arranged, but common tin furnace kettle mouth is flat mouthful design, in order to realize scolding tin operation to the PCBA plate, generally need maintenance distance once between PCBA plate and kettle mouth, guarantee to make tin liquor can the electric elements on the PCBA plate of top be welded on the one hand from the Hu Kou ejection, guarantee simultaneously can in time discharge Hu Kou from the tin liquor of Hu Kou ejection subsequently, prevent that the kettle mouth pressure is excessive, influence welding quality, but also there is fault of construction in this structure: when tin liquor when Hu Kou sprays, because the tin liquor of upper space is owing to directly contact the formation oxide layer with air, this part oxide layer at first contacts with the PCBA plate of top along with tin liquor is gushed out from Hu Kou, in the wings under the frontal impact of tin liquor, make this part oxide layer oppressed on PCBA plate face, be difficult for it being taken away, make oxide layer remain between solder joint and the PCBA plate, have a strong impact on welding quality by the kettle mouth tin liquor of gushing out subsequently.In addition, when usually some being had the welding of PBCA plate electronic devices and components of connector, often be not easy to the position of Hu Kou is fixed, thereby influence welding effect.
Summary of the invention
In order to overcome the deficiency that above-mentioned various scolding tin exists, when especially adopting the intensive PCBA plate of the point-to-point wave-soldering butt welding point of automatic selectivity to weld, inefficiency, be unsuitable for extensive batch machining, and contact easily forms the deficiency of rosin joint, it is a kind of simple in structure that the utility model provides, and can effectively improve welding efficiency, guarantees the tin furnace kettle mouth of the quality of welded contact.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of lug boss side tin overflowing pot opening, described Hu Kou is made up of matrix and insertion mouth, forms step between matrix and insertion mouth, offers out the tin hole on matrix.
For the ease of the processing in the tin hole of overflowing, guarantee that simultaneously the tin liquor tin orifice flow that can overflow equably goes out, further: described excessive tin hole is tri-angle-holed.
The existence in excessive tin hole can effectively change the flow direction of tin liquor behind ejection Hu Kou.After tin liquor sprays from Hu Kou, tin liquor can preferentially go out from the tin orifice flow that overflows, so just form certain tin stream that flows to, making the oxide layer of the superiors can directly do not impacted is adsorbed onto on the PCBA plate, even there is the partial oxidation layer to be adsorbed onto on the PCBA plate, can be washed away by the tin liquor that sprays from Hu Kou subsequently, having guaranteed can residual oxide layer not influence the soldering quality between scolding tin and PCBA plate yet; On the other hand, because surface tension, tin liquor upper surface in the kettle mouth is spherical shape, make under the not high situation of furnace pressure, may appear at kettle mouth edge and form rosin joint, influence welding quality, the existence in excessive tin hole, change the flow direction of kettle mouth tin liquor, made tin liquor can maximum possible cover the PCBA plate of kettle mouth top, guaranteed the adequacy and the fastness of welding.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the utility model kettle mouth structure schematic diagram.
Fig. 2 is the placement location schematic diagram of the utility model on the PCBA plate.
1. excessive tin holes, 2 matrixes 3. insert mouthful 4. steps, 5. electronic devices and components 6.PCBA plates among the figure
Embodiment
A kind of lug boss side tin overflowing pot opening as shown in Figure 1, described Hu Kou is made up of matrix 2 and insertion mouth 3, forms step 4 between matrix 2 and insertion mouth 3, offers out tin hole 1 on matrix 2, and described excessive tin hole 1 is the triangle mouth.
As shown in Figure 2, on matrix 2, be provided with and insert mouth 3, be more convenient for inserting in mouthful 3 electronic devices and components 5 that are deep on the PCBA plate 6 and go.The tin hole 1 that goes out that is arranged on the matrix 2 is designed to triangle, and when tin liquor flowed out from going out tin hole 1, the triangle that goes out tin hole 1 had also played good guide functions.
During use, the PCBA plate is placed on the precalculated position of kettle mouth top, and board plane and kettle mouth stannum export are maintained a certain distance, generally be controlled at 2～4mm.The shape of Hu Kou can determine that Hu Kou is designed to rectangular shape usually according to the distribution situation of PCBA plate welding position, and its length is 6～11mm.For the welding position is irregular concentrated distribution, can adopt a plurality of rectangle Hu Kou to piece together required welding shape.Tin liquor keeps earlier certain liquid level to store in the kettle mouth 1～3 minute, the PCBA plate to be welded of top is carried out preheating, so that preceding operation is removed the oxide layer on the PCBA plate at the scaling powder generation chemical reaction of PCBA plate position to be welded spraying.Afterwards, the electronic startup of tin stove, push to Hu Kou by the tin liquor of exerting pressure the tin furnace interior, the continuous lifting of tin liquor face in the kettle mouth, and tin liquor ejects kettle mouth stannum export the most at last, contacts with the PCBA plate of top and welds, and is guaranteeing that tin liquor and PCBA plate fully weld, unnecessary tin liquor can be discharged from the tin hole of overflowing, and takes away the oxide layer and the impurity of tin liquor top layer.At last, take off the PCBA plate, finish the welding of ground PCBA plate from kettle mouth top.
Because adopted kettle mouth method for designing flexibly, enlarged effective solder side, thereby made speed of welding and to enclose border " automatic selectivity welding tin stove " fast on year-on-year basis more than three times.
Because Hu Kou has adopted excessive tin hole design, this scheme has just been removed the main scruff of welding quality and the oxide skin on tin liquor surface of influencing before welding, the qualification rate of welding is reached more than 99.9%.
Claims (2)
1. lug boss side tin overflowing pot opening, it is characterized in that: described Hu Kou is made up of matrix (2) and stannum export (3), forms step (4) between matrix (2) and stannum export (3), offers out tin hole (1) on matrix (2).
2. lug boss side tin overflowing pot opening according to claim 1 is characterized in that: described excessive tin hole (1) is the triangular form mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820216483 CN201312442Y (en) | 2008-11-25 | 2008-11-25 | Boss lateral tin-spilling kettle spout |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820216483 CN201312442Y (en) | 2008-11-25 | 2008-11-25 | Boss lateral tin-spilling kettle spout |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201312442Y true CN201312442Y (en) | 2009-09-16 |
Family
ID=41109698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200820216483 Expired - Fee Related CN201312442Y (en) | 2008-11-25 | 2008-11-25 | Boss lateral tin-spilling kettle spout |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201312442Y (en) |
-
2008
- 2008-11-25 CN CN 200820216483 patent/CN201312442Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090916 Termination date: 20101125 |