CN204975616U - Crest is tin jar for brazier - Google Patents
Crest is tin jar for brazier Download PDFInfo
- Publication number
- CN204975616U CN204975616U CN201520669536.2U CN201520669536U CN204975616U CN 204975616 U CN204975616 U CN 204975616U CN 201520669536 U CN201520669536 U CN 201520669536U CN 204975616 U CN204975616 U CN 204975616U
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- Prior art keywords
- chamber
- tin
- crest
- purifying
- cylinder
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Abstract
The utility model relates to a crest is tin jar for brazier. The utility model discloses a tin jar includes: the crest chamber, the crest intracavity is equipped with and is used for melting the crest nozzle that tin formed the crest, be used for to the crest chamber provides the supply of melting tin chamber, be used for in the backward flow on the way to oneself the backward flow of crest chamber extremely the tin that melts of supplying with the chamber carries out purified purification chamber. The utility model discloses the pollution that can avoid decontaminant contact printing circuit board to lead to, and have advantages such as clean convenient.
Description
Technical field
The utility model relates to a kind of printed circuit board (PCB) welding equipment, particularly, and a kind of wave-soldering furnace tin cylinder.
Background technology
Wave-soldering furnace is the welding equipment in printed circuit-board assembly and PCBA processing procedure.Its Main Function utilizes molten tin crest that the electronic devices and components of attachment or plug-in mounting are in advance welded in printed circuit board (PCB).
Fig. 1 and Fig. 2 gives a kind of primary structure of typical wave-soldering furnace 10.Wave-soldering furnace 10 mainly comprises three functional modules, scaling powder spraying unit 1, preheating unit 2, and tin cylinder 3.Conveyer chain 4 is mainly used in transporting printed circuit board (PCB) (not shown) to be welded successively by described three functional modules.In tin cylinder 3 place, the crest that printed circuit board (PCB) is formed by the scolding tin being fused into liquid, realizes welding of electronic devices and components and printed circuit board (PCB).
Fig. 3 gives the primary structure of the tin cylinder 3 shown in Fig. 1 and 2.Tin cylinder 3 belongs to single chamber dual waves structure.Wherein, solder liquation is under the effect of pump 5, through passage 6, spouting by nozzle 7, forms pulse crest 8; Solder liquation is under the effect of pump 51, through passage 61, spouting by nozzle 71, forms flat crest 81.Two crests are arranged in juxtaposition, and from the sender of printed circuit board (PCB) always, pulse crest 8 is positioned at upstream, and flat wave-wave peak 81 is positioned at downstream.
Scolding tin as solder is alloy material, and its concrete composition determines by product specification and technological requirement.Due to scolding tin need to heat in tin cylinder be dissolved into liquid state to 250 DEG C or more after be injected into crest, scolding tin crest contacts with oxygen under this high temperature again, therefore scolding tin constantly produces oxidation.These oxides, except affecting wave soldering effect, also can add scolding tin use amount and cause cost increase.
For reducing solder oxidation amount and keeping crest stablizing effect, good way adds scarvenger in molten tin surfaces in tin cylinder.Scarvenger can be antioxidant or solder oxidation reducing agent.Antioxidant can reduce solder oxidation.Solder oxidation reducing agent not only can reduce solder oxidation, more already oxidised scolding tin can be reduced to pure scolding tin and then recycle, and also scolding tin constantly can be carried out purifying online, help improve Weldability and quality.
, the chemicals such as scolding tin antioxidant or reducing agent is used all likely to cause the electronic product of required welding contact these chemicals through crest and polluted.In addition, synthetic impurity can be produced after oxidation scolding tin and mixing such as these chemicals and scaling powders etc., these impurity form hard coherent film on the surface of tin cylinder inner surface and build-in components thereof then with molten tin circulating in tin cylinder, thus increase the degree of difficulty of maintenance washes tin cylinder.
Utility model content
In order to solve the problem using antioxidant or the incidental pollution risk of solder oxidation reducing agent and maintenance difficulty in wave-soldering furnace, main purpose of the present utility model is to provide and a kind ofly reduces pollution risk and tin cylinder easy to clean.
For achieving the above object, tin cylinder of the present utility model comprises: crest chamber, is provided with the wave nozzle for molten tin being formed crest in described crest chamber; For providing the feeding chamber of molten tin to described crest chamber; For carrying out the purifying chamber of purifying in backflow way to the molten tin being back to described feeding chamber from described crest chamber.
Owing to only carrying out purifying to the scolding tin refluxed in the purifying chamber separated with crest chamber, correspondingly, scarvenger will be contained in purifying chamber, no longer be mixed in crest, avoid scarvenger and contact caused pollution with printed circuit board (PCB).Meanwhile, the synthetic impurity produced after adding scarvenger in scolding tin and the oxidation scolding tin etc. of discharging from crest chamber are all accommodated in purifying chamber, can concentrate on purifying chamber to the clean of tin cylinder, without the need to cleaning whole tin cylinder again, significantly reduce the difficulty of clean maintenance.Correspondingly, the clean maintenance of wave-soldering furnace is just relatively easy.
As the further optimization of the utility model tin cylinder, be provided with dividing plate between described crest chamber and described purifying chamber, the height of described dividing plate is set to make the top layer of molten tin in described crest chamber be spilled over to described purifying chamber.
Because the internal oxidition soldering of crest chamber mainly concentrates on the top layer contacted with air, the molten tin of endosexine, crest chamber is pushed purifying chamber, both can carry out efficient purifying to scolding tin in cylinder, the use amount of scarvenger can be controlled again.
As the further optimization of the utility model tin cylinder, be provided with baffle plate between described purifying chamber and described feeding chamber, the bottom of described baffle plate is provided with filter screen.
Filter screen can carry out contaminant filter to the soldering stream being back to feeding chamber after purifying, thus guarantees the cleannes of the scolding tin returning feeding chamber.
As the further optimization of the utility model tin cylinder, in described crest chamber, be provided with the directional nozzle that the top layer for melting tin in push chamber is overflowed to described purifying chamber.
The existence of directional nozzle, can help endosexine, crest chamber to melt tin and flow into purifying chamber quickly, and convenient oxidation soldering is sent into purifying chamber in time and processed.
As the further optimization of the utility model tin cylinder, described crest chamber, described purifying chamber, described feeding chamber are arranged in a linear successively.
Three chambeies are arranged in a linear, and facilitate existing single cylinder tin cylinder technology to upgrade to tin cylinder of the present utility model.That is, existing single cylinder tin cylinder can complete upgrading, without the need to increasing miscellaneous part under the prerequisite increasing dividing plate and baffle plate.
As the further optimization of the utility model tin cylinder, described feeding chamber is provided with supply pump.Supply pump to from feeding chamber to the supply stream in crest chamber or go fluid welding tin to produce thrust, and produce suction to the reflow tin soldering going back to supply chamber from purifying chamber, supply pump is located at feeding chamber, is convenient to be formed circulation scolding tin stream; Also tin cylinder structure is convenient to compacter; And, be also convenient to the maintenance process simulation of pump.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further described.
Fig. 1 is the side schematic view of existing wave-soldering furnace;
Fig. 2 is the top view of wave-soldering furnace shown in Fig. 1;
Fig. 3 is the structural representation under the depression angle of the cylinder of tin described in Fig. 1;
Fig. 4 is the schematic side view of the utility model tin cylinder;
Fig. 5 is the schematic top view of the utility model tin cylinder;
Fig. 6 is the figure removing stream line that scolding tin in the utility model tin cylinder is shown;
Fig. 7 is the figure of the return path that scolding tin in the utility model tin cylinder is shown.
Detailed description of the invention
First, see Fig. 4 and Fig. 5.Fig. 4 is the schematic side view of the utility model tin cylinder.Fig. 5 is the schematic top view of the utility model tin cylinder.
Tin cylinder 30 is divided into three chambeies by dividing plate 31 and baffle plate 32, is from left to right respectively, feeding chamber 33, purifying chamber 34 and crest chamber 35.The wave nozzle 39 and 391 for molten tin being formed crest is provided with in crest chamber 35.Feeding chamber 33 provides molten tin respectively by passage 38 and 381 to crest chamber 35 under the effect of pump 37 and 371, and to form crest 43 and 44, wherein 43 is impulse wave, and 44 is flat ripple.Purifying chamber 34 for carrying out purifying to the molten tin being back to feeding chamber 33 from crest chamber 35 in backflow way.
Crest chamber 35 is crossed dividing plate 31 and is communicated with purifying chamber 34.The height of dividing plate 31 is set to make the top layer of molten tin in crest chamber 35 be spilled over to purifying chamber 34.
Purifying chamber 34 is communicated with feeding chamber 33 by the filter screen 36 being positioned at the below of baffle plate 32.Filter screen 36 is conveniently replaced.
Multiple directional nozzles 40 that the top layer for melting tin in push chamber is overflowed to purifying chamber 34 are provided with in crest chamber 35.Directional nozzle 40 is arranged around wave nozzle 39 and 391.Directional nozzle 40 is for the formation of pilot flow 45, and these pilot flow are used for guiding purifying chamber 34, the top layer of the scolding tin in crest chamber 35, and the scolding tin that crest 43 and 44 distance dividing plate 31 part farthest flows out is also in the radiation scope of pilot flow 45.
Crest chamber 35, purifying chamber 34, feeding chamber 33 are transversely arranged in order, in a straight line.Printed circuit board (PCB) to be welded will longitudinally successively by the peaceful wave-wave peak 44 of pulse crest 43.Like this, purifying chamber 34 and feeding chamber 33 are located in the side of printed circuit board (PCB) direction of transfer.
The motor 41 of supply pump 37 is driven to be positioned at the top of feeding chamber 33.Pump 37 is near filter screen 36, and pump provides suction by the scolding tin flowing to feeding chamber 33 from purifying chamber 24.Pump 371 also has identical configuration.
Fig. 6 is the figure removing stream line that scolding tin in the utility model tin cylinder is shown.Fig. 7 is the figure of the return path that scolding tin in the utility model tin cylinder is shown.Below in conjunction with Fig. 6 and Fig. 7, the purification process of scolding tin in tin cylinder is described.
Before operation, in tin cylinder 30, add the scolding tin of scheduled volume.These scolding tin can be melt into liquid state outward in advance at cylinder.Also after the liquid solder of adding portion, the more solid-state welding rod of surplus can be added, after in cylinder, be melt into liquid in the lump.
Although there are two crests in tin cylinder, for the utility model, two crest essence are identical, therefore following description only launches with impulse wave part.
During work, the pressurization of the scolding tin of melting is led directly to crest chamber 35 by feeding chamber 33 and is emitted into crest 43 by pump 37 under the driving of motor 41.As shown in Figure 6, the tributary of the scolding tin in pipeline 38 forms crest 43, and another tributary forms pilot flow 45.
As shown in Figure 7, the scolding tin of crest 43 outflow, under the auxiliary pushing of the pilot flow 45 formed at directional nozzle 40, cross dividing plate 31 and form waterfall stream 46, thus have the surperficial tin layers of oxidation to flow to purifying chamber 34 in drive crest chamber 35, as waterfall down impacts, the antioxidant of interpolation in purifying chamber 34 or solder oxidation reducing agent are rolled thereupon, naturally stir flowing and reaches to effect that is anti-oxidation or reduction-oxidation tin.Be back to feeding chamber 33 through the filter screen 36 of baffle plate 32 bottom after scolding tin completes purifying, then recycle.Backflow 47 through filter screen after purifying is pointed near the entrance of pump 37.
It should be noted that, scolding tin is general solder, and tin cylinder described in the utility model is being commonly called as of solder cylinder.
For those of ordinary skill in the art, do not departing under design of the present utility model and range situation, above-described embodiment has various deformation, and such as, tin cylinder is single crest tin cylinder; Dual waves shares compression pump and passage portion; Filter screen and baffle plate are wholely set etc., and it includes within scope of the present utility model.
Claims (7)
1. for a tin cylinder for wave-soldering furnace, it is characterized in that, described tin cylinder comprises:
Crest chamber, is provided with the wave nozzle for molten tin being formed crest in described crest chamber;
For providing the feeding chamber of molten tin to described crest chamber;
For carrying out the purifying chamber of purifying in backflow way to the molten tin being back to described feeding chamber from described crest chamber.
2. tin cylinder according to claim 1, is characterized in that,
Be provided with dividing plate between described crest chamber and described purifying chamber, the height of described dividing plate is set to make the top layer of molten tin in described crest chamber be spilled over to described purifying chamber.
3. tin cylinder according to claim 1 and 2, is characterized in that,
Be provided with baffle plate between described purifying chamber and described feeding chamber, the bottom of described baffle plate is provided with filter screen.
4. tin cylinder according to claim 3, is characterized in that,
The directional nozzle that the top layer for melting tin in push chamber is overflowed to described purifying chamber is provided with in described crest chamber.
5. tin cylinder according to claim 3, is characterized in that,
Described crest chamber, described purifying chamber, described feeding chamber are arranged in a linear successively.
6. tin cylinder according to claim 3, is characterized in that,
Described filter screen is conveniently replaced.
7. tin cylinder according to claim 3, is characterized in that,
Described feeding chamber is provided with supply pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520669536.2U CN204975616U (en) | 2015-08-31 | 2015-08-31 | Crest is tin jar for brazier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520669536.2U CN204975616U (en) | 2015-08-31 | 2015-08-31 | Crest is tin jar for brazier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204975616U true CN204975616U (en) | 2016-01-20 |
Family
ID=55110035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520669536.2U Expired - Fee Related CN204975616U (en) | 2015-08-31 | 2015-08-31 | Crest is tin jar for brazier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204975616U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105033398A (en) * | 2015-08-31 | 2015-11-11 | 王氏港建经销有限公司 | Tin cylinder for wave soldering furnace and online purification method for soldering tin |
| CN117206625A (en) * | 2023-11-08 | 2023-12-12 | 深圳市矗鑫电子设备有限公司 | Welding equipment and welding method for preventing selective wave soldering from being carried out in succession |
-
2015
- 2015-08-31 CN CN201520669536.2U patent/CN204975616U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105033398A (en) * | 2015-08-31 | 2015-11-11 | 王氏港建经销有限公司 | Tin cylinder for wave soldering furnace and online purification method for soldering tin |
| CN117206625A (en) * | 2023-11-08 | 2023-12-12 | 深圳市矗鑫电子设备有限公司 | Welding equipment and welding method for preventing selective wave soldering from being carried out in succession |
| CN117206625B (en) * | 2023-11-08 | 2024-01-09 | 深圳市矗鑫电子设备有限公司 | Welding equipment and welding method for preventing selective wave soldering from being carried out in succession |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160120 Termination date: 20180831 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |