CN201295805Y - Lead-free dip-soldering and tin-soldering adhesion hot-air cleaning mechanism - Google Patents
Lead-free dip-soldering and tin-soldering adhesion hot-air cleaning mechanism Download PDFInfo
- Publication number
- CN201295805Y CN201295805Y CNU2008201436268U CN200820143626U CN201295805Y CN 201295805 Y CN201295805 Y CN 201295805Y CN U2008201436268 U CNU2008201436268 U CN U2008201436268U CN 200820143626 U CN200820143626 U CN 200820143626U CN 201295805 Y CN201295805 Y CN 201295805Y
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- air
- labyrinth type
- type air
- wicking
- soldering
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Abstract
The utility model relates to a lead-free dip-soldering and tin-soldering adhesion hot-air cleaning mechanism which comprises a heating plate provided with a heater inside, a labyrinth type air duct positioned on the heating plate and an air inlet opening and an air outlet opening are formed thereon, a spraying nozzle arranged on one side of the air outlet opening of the labyrinth type air duct and communicated with the air outlet opening and a heat insulating layer formed by the heating plate and the labyrinth type air duct and positioned on the outer side of the heater. The outlet gap of the spraying nozzle has a width of 0.2 to 0.6 mm, and a heating rod is arranged in the outlet gap of the spraying nozzle. An airflow control system used for controlling the air flow in the labyrinth type air duct and provided with double air passages is arranged, and two air passages formed by a pressure-regulating valve, a two-position and two-way solenoid valve, a flow control valve and a one-way valve which are connected in sequence are also arranged, wherein, the air inlet ends of the two air passages are respectively connected with an air source, and the air outlet ends of the two air passages are respectively connected with the air inlet opening of the labyrinth type air duct. The utility model has the advantages of simple structure, easy realization, convenient control and low cost; and the hot-air cleaning mechanism can conduct combined operation with the automatic dip-soldering welding machine, the welding effect is improved, the quality of the products after the hot air treatment is high, and the yield of the products after dip soldering can be greatly improved.
Description
Technical field
The utility model relates to a kind of tin adhesion and removes mechanism, particularly relates to a kind of wicking bonding machine integration of operation automatically together, increase substantially the product yield of wicking weldering, is easy to realize that the unleaded wicking scolding tin adhesion hot blast that efficient is high is removed mechanism.
Background technology
In the modern industry, along with the extensive use of integrated circuit, stitch is pegged graft becomes important technology in electronics, the mechanical industry.After stitch is pegged graft and finished, generally need stitch and wiring board be welded together by the wicking weldering.Along with the raising gradually to environmental requirement, no lead-tin soldering has become a kind of main flow and inexorable trend, but flowability and the wellability of not having a slicker solder have slicker solder far short of what is expected.Under the less situation of stitch spacing, the tin adhesion is the unleaded very common defective in the soldering process of advancing.Many times, have to carry out postwelding removing etc. and study for a second time courses one has flunked work, greatly reduce production efficiency.For example, in the weldering of the wicking of pressure sensor wiring board because in welding process, employing be no slicker solder, the tin flowability is poor, the stitch spacing is little in addition, causes the tin adhesion easily, influences welding quality, and needs subsequent treatment.Once utilized weight vibration to remove before this and connect tin, this mode is simple in structure, and control is also than being easier to, but in use may cause another kind of defective, few tin, even cause in the pad earthquake process and come off.
Summary of the invention
Technical problem to be solved in the utility model is, a kind of employing hot blast is provided, at first providing energy will connect tin partly blows molten, connecting tin under the air-flow effect removes, and the tin on stitch and the pad can still keep under capillary effect, simultaneously the tin that melts of secondary forms the effect of shaping once more to welding, has improved welding effect, and the unleaded wicking scolding tin adhesion hot blast that the product percent defective can reduce is greatly removed mechanism.
The technical scheme that the utility model adopted is: a kind of unleaded wicking scolding tin adhesion hot blast is removed mechanism, includes the heating plate that inside is provided with heater element; Be positioned at the labyrinth type air flue that is formed with air inlet and gas outlet above the heating plate; The nozzle that is arranged on labyrinth type air flue gas outlet one side and is communicated with the gas outlet; And the heat-insulation layer that wraps in the outside of the heater that constitutes by heating plate and labyrinth type air flue.
Be provided with heating rod in the described nozzle.
The outlet gap of described nozzle is 0.2～0.6mm.
Described labyrinth type air flue is provided with the thermocouple that is connected with temperature controller.
The outside of described heater element also is provided with the magnesia insulating heat-conductive layer of high temperature protection against the tide.
Also be provided with the jet system that is used to control air-flow in the labyrinth type air flue with two gas circuits.
Described jet system includes: two gas circuits that are connected to form successively by pressure regulator valve, 2/2-way magnetic valve, flow control valve and check valve, the inlet end of described two gas circuits all is connected with source of the gas, and the outlet side all is connected with the air inlet of labyrinth type air flue.
Unleaded wicking scolding tin adhesion hot blast of the present utility model is removed mechanism, and is simple in structure, is easy to realize, be convenient to control, cost is low.Can not increase the equipment beat, the efficient height with wicking bonding machine integration of operation automatically.Make the defective of pb-free solder obtain the essence improvement, improved welding effect, the product quality height after hot blast is handled can increase substantially the product yield that wicking welds.
Description of drawings
Fig. 1 is an overall structure schematic diagram of the present utility model;
Fig. 2 is a gas circuit control schematic diagram of the present utility model;
Fig. 3 is an application example schematic diagram of the present utility model.
Wherein:
1: heating plate 2: the labyrinth type air flue
3: nozzle 4: heat-insulation layer
5: rotating shaft 6: support
7: deck plate 8: the tin stove
9: manipulator 10: spacing cylinder
11: propulsion cylinder 12: heater element
13: thermocouple 14: air inlet
15: heating rod 16: pressure regulator valve
17: 2/2-way magnetic valve 18: flow control valve
19: check valve 20: source of the gas
The specific embodiment
Provide specific embodiment below in conjunction with accompanying drawing, further specify unleaded wicking scolding tin adhesion hot blast of the present utility model and remove how mechanism to realize.
As shown in Figure 1, unleaded wicking scolding tin adhesion hot blast of the present utility model is removed mechanism, includes the heating plate 1 that inside is provided with heater element 12; Be positioned at the labyrinth type air flue 2 that is formed with air inlet 14 and gas outlet above the heating plate 1, the labyrinth type air flue helps the raising of gas temperature; The nozzle 3 that is arranged on labyrinth type air flue 2 gas outlets, one side and is communicated with the gas outlet; And the heat-insulation layer 4 that wraps in the outside of the heater that constitutes by heating plate 1 and labyrinth type air flue 2.Described nozzle 3 usefulness stainless steels are made, and the outlet gap of nozzle 3 is 0.2～0.6mm, and is provided with a heating rod 15 in nozzle 3, is used for heated nozzle, cause temperature to descend when avoiding air flow stream to cross nozzle 3, influence the effect of hot blast.
Because gas finally may be heated to the temperature about 400 degree, therefore more abominable as the working environment of the electrothermal tube of heater element 12, cause the high temperature electric leakage easily,, placed the magnesia insulating heat-conductive layer of high temperature protection against the tide in the electrothermal tube outside for fear of this problem.
Labyrinth type air flue 2 is provided with the thermocouple 13 that is connected with temperature controller.Gas flow temperature is by connecting the temperature controller of heater element 12, and thermocouple 13 grades form close loop control circuit and realize control automatically, and the temperature range that general air-flow needs is 360～450 degree.
As shown in Figure 2, also be provided with the jet system that is used to control air-flow in the labyrinth type air flue 2 with two gas circuits.Described jet system includes: two gas circuits that are connected to form successively by pressure regulator valve 16,2/2-way magnetic valve 17, flow control valve 18 and check valve 19, the inlet end of described two gas circuits all is connected with source of the gas 20, and the outlet side all is connected with the air inlet 14 of labyrinth type air flue 2.Wherein, stingy amount was supplied with to avoid the heater dry combustion method when one group of gas circuit was used for standby, and another group gas circuit is used for the work gas circuit, and two groups of gas circuits are respectively by pressure regulator valve and flow control valve controlled pressure and flow.Require supply gas pressure during work between 1-5bar.
As shown in Figure 3, in the present embodiment, the unleaded wicking scolding tin of flow control valve of the present utility model adhesion hot blast is removed mechanism be arranged in workpiece manipulator the place ahead, top is fixing by rotating shaft 5, the bottom is auxiliary with propulsion cylinder 11, is used for sending to forward when the spray hot blast nozzle 3.The position of nozzle 3 is about to the nozzle gas port and connects in the 1～2mm scope of tin position apart from circuit board by following principle adjustment.
Place 8 of 350W heating tubes in the heating plate 1 altogether, 1 of 280W heating tube is placed at nozzle 3 places, needs to guarantee that the power density of heating tube is less than 8W/cm
2Surpass this numerical value, the heating tube life-span can reduce.Temperature controller is selected West P8100 for use, and 0.35mm is selected in the air-flow slit of nozzle for use.Air pressure is adjusted into 4bar, and gas flow temperature is controlled at about 380 degree.
In welding process, the jaw band welding work pieces and is entered molten tin bath and weld, and waits and climbs after tin finishes, and jaw is carried under cylinder drives, when jaw just rises, propulsion cylinder 11 is sent nozzle 3 forward to, opens magnetic valve simultaneously, and thermal current blows the tin of adhesion molten the time, puncture the surface of adhesion tin by the pressure of air-flow, the tin that melts then flows down along stitch, thereby, the removing function of realization adhesion tin.
Claims (7)
1. a unleaded wicking scolding tin adhesion hot blast is removed mechanism, it is characterized in that, includes the heating plate (1) that inside is provided with heater element (12); Be positioned at the labyrinth type air flue (2) that is formed with air inlet (14) and gas outlet above the heating plate (1); The nozzle (3) that is arranged on labyrinth type air flue (2) gas outlet one side and is communicated with the gas outlet; And the heat-insulation layer (4) that wraps in the outside of the heater that constitutes by heating plate (1) and labyrinth type air flue (2).
2. unleaded wicking scolding tin adhesion hot blast according to claim 1 is removed mechanism, it is characterized in that, is provided with heating rod (15) in the described nozzle (3).
3. unleaded wicking scolding tin adhesion hot blast according to claim 1 is removed mechanism, it is characterized in that the outlet gap of described nozzle (3) is 0.2～0.6mm.
4. unleaded wicking scolding tin adhesion hot blast according to claim 1 is removed mechanism, it is characterized in that described labyrinth type air flue (2) is provided with the thermocouple (13) that is connected with temperature controller.
5. unleaded wicking scolding tin adhesion hot blast according to claim 1 is removed mechanism, it is characterized in that the outside of described heater element (12) also is provided with the magnesia insulating heat-conductive layer of high temperature protection against the tide.
6. unleaded wicking scolding tin adhesion hot blast according to claim 1 is removed mechanism, it is characterized in that, also is provided with the jet system with two gas circuits that is used to control the interior air-flow of labyrinth type air flue (2).
7. unleaded wicking scolding tin adhesion hot blast according to claim 6 is removed mechanism, it is characterized in that, described jet system includes: two gas circuits that are connected to form successively by pressure regulator valve (16), 2/2-way magnetic valve (17), flow control valve (19) and check valve (19), the inlet end of described two gas circuits all is connected with source of the gas (21), and the outlet side all is connected with the air inlet (14) of labyrinth type air flue (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201436268U CN201295805Y (en) | 2008-11-28 | 2008-11-28 | Lead-free dip-soldering and tin-soldering adhesion hot-air cleaning mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201436268U CN201295805Y (en) | 2008-11-28 | 2008-11-28 | Lead-free dip-soldering and tin-soldering adhesion hot-air cleaning mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201295805Y true CN201295805Y (en) | 2009-08-26 |
Family
ID=41041766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201436268U Expired - Lifetime CN201295805Y (en) | 2008-11-28 | 2008-11-28 | Lead-free dip-soldering and tin-soldering adhesion hot-air cleaning mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201295805Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105345208A (en) * | 2015-12-18 | 2016-02-24 | 东莞市合易自动化科技有限公司 | Tin spraying device with air blowing structure |
| CN114247954A (en) * | 2021-12-13 | 2022-03-29 | 中国电子科技集团公司第十三研究所 | Immersion type tin-coating gold-removing device |
-
2008
- 2008-11-28 CN CNU2008201436268U patent/CN201295805Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105345208A (en) * | 2015-12-18 | 2016-02-24 | 东莞市合易自动化科技有限公司 | Tin spraying device with air blowing structure |
| CN105345208B (en) * | 2015-12-18 | 2019-05-31 | 东莞市合易自动化科技有限公司 | A kind of tin jet device with blow structure |
| CN114247954A (en) * | 2021-12-13 | 2022-03-29 | 中国电子科技集团公司第十三研究所 | Immersion type tin-coating gold-removing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090826 |