CN206335218U - A kind of reflow soldering welds nitrogen gas handling system - Google Patents
A kind of reflow soldering welds nitrogen gas handling system Download PDFInfo
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- CN206335218U CN206335218U CN201621436167.3U CN201621436167U CN206335218U CN 206335218 U CN206335218 U CN 206335218U CN 201621436167 U CN201621436167 U CN 201621436167U CN 206335218 U CN206335218 U CN 206335218U
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- air inlet
- branch road
- inlet branch
- nitrogen
- reflow soldering
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Abstract
The utility model is related to a kind of reflow soldering welding nitrogen gas handling system, Redundant Control is carried out to the nitrogen air inlet to reflow soldering, ensure the nitrogen supply (NS) in welding process, the gas handling system includes control display device, the first air inlet branch road being connected and the second air inlet branch road and the nitrogen supply (NS) device being connected respectively with the first air inlet branch road and the second air inlet branch road are responsible for the air inlet of reflow soldering nitrogen respectively, the first described air inlet branch road and the second air inlet branch road include main air inlet branch road and standby air inlet branch road parallel with one another, described main air inlet branch road is provided with main solenoid valve and pressure sensor, described standby air inlet branch road is provided with standby magnetic valve, described main solenoid valve, standby magnetic valve and pressure sensor are connected with control display device respectively.Compared with prior art, the utility model there is economic and reliable, it is easy to operate, the advantages of high precision.
Description
Technical field
The utility model is related to SMT industry reflow soldering operation water chestnut leaves, and nitrogen is welded more particularly, to a kind of reflow soldering
Gas handling system.
Background technology
Reflow soldering is for a kind of welding equipment in SMT industries.It can provide automatic and stable heating environment, make
Solder(ing) paste melted by heat in burner hearth, so as to allow on circuit board the electric elements mounted in advance and circuit board to pass through soldering alloy
Reliably it is combined together.
In SMT industries, with unleaded propulsion, the backflow traditional to SMT of the high-melting-point of lead-free brazing, low wetability
Welding procedure brings great impact, and butt welding point mass also generates very big influence.For anti-oxidation, improve solder with
Wetability between pad and component pin, improves product yield, and increasing Reflow Soldering uses nitrogen to be protected as welding
Gas is protected, with the firmness and aesthetics for preventing solder oxidation, reducing welding slag, improving welding.
Current enterprise typically provides nitrogen using two ways：One kind is PSA nitrogen making machines scene nitrogen processed, and another is purchase
Buy liquid nitrogen and supply nitrogen.No matter enterprise provides nitrogen using which kind of mode, the nitrogen reflux soldering equipment purchased in the market, general
Leave all the way or two-way nitrogen inlet channel.
Requirement of the different products to nitrogen inert atmosphere protection in stove can be different.General product requirement oxygen content<
200ppm, but there is the product for much requiring high to need oxygen content<100ppm is even lower.If reflow soldering be equipped with all the way or
Person's two-way nitrogen breaks down, or nitrogen pressure it is too low when, be filled with nitrogen in burner hearth and stop, the circuit board in burner hearth may
Just occur that component is oxidized caused by oxygen content is too high, is caused the off quality of circuit board or even is scrapped.
Nitrogen air inlet only one of which main road system used by current reflow soldering, once there is hypotony in main road nitrogen pot
Or break down, the circuit board in burner hearth is raised due to oxygen content, it may appear that oxidized probability rise, so as to cause circuit
Plate disqualification rate rises significantly；If nitrogen pot breaks down, in the repair time, client can only stop production, so as to cause economy
Benefit is damaged.
Utility model content
The purpose of this utility model be exactly in order to overcome defect that above-mentioned prior art is present and provide a kind of economic and reliable,
It is easy to operate, the reflow soldering welding nitrogen gas handling system of high precision.
The purpose of this utility model can be achieved through the following technical solutions：
A kind of reflow soldering welds nitrogen gas handling system, carries out Redundant Control to the nitrogen air inlet to reflow soldering, protects
Demonstrate,prove nitrogen supply (NS) in welding process, the gas handling system include control display device, respectively with reflow soldering nitrogen air inlet master
The first air inlet branch road and the second air inlet branch road of pipe connection and respectively it is connected with the first air inlet branch road and the second air inlet branch road
Nitrogen supply (NS) device, the first described air inlet branch road and the second air inlet branch road include main air inlet branch road parallel with one another and standby
Air inlet branch road, described main air inlet branch road is provided with main solenoid valve and pressure sensor, and described standby air inlet branch road is provided with
Standby magnetic valve, described main solenoid valve, standby magnetic valve and pressure sensor is connected with control display device respectively.
The first main solenoid valve and first pressure sensor are sequentially provided with the main air inlet branch road of the first described air inlet branch road,
The second main solenoid valve and second pressure sensor, described are sequentially provided with the main air inlet branch road of the second described air inlet branch road
The standby air inlet branch road of one air inlet branch road is provided with the first standby magnetic valve, the standby air inlet branch road of described the second air inlet branch road
It is provided with the second standby magnetic valve.
Described control display device includes controller, display lamp and buzzer, and described controller passes through relay point
Current supply circuit not with the first main solenoid valve, the second main solenoid valve, the first standby magnetic valve and the second standby magnetic valve is connected, and
And be connected with first pressure sensor and second pressure sensor, described display lamp and buzzer are connected with controller respectively.
First manual pressure regulator valve is provided between the first described main solenoid valve and reflow soldering nitrogen air inlet supervisor, it is described
The second manual pressure regulating valve is provided between second main solenoid valve and reflow soldering nitrogen air inlet supervisor.
Described nitrogen supply (NS) device includes PSA nitrogen making machines and liquid nitrogen storage tank.
Described first pressure sensor and second pressure sensor model number are LF16.
Compared with prior art, the utility model has advantages below：
First, economic and reliable：The utility model sets active and standby respectively by setting up in two-way air inlet branch road, two-way air inlet branch road
Two circuits, instead of original main air inlet pipe all the way by active and standby setting, when main line breaks down, enable spare duct
The pressure of nitrogen air inlet is ensure that, can not only ensure that the circuit board in burner hearth will not be oxidized, and equipment can be ensured not
Stop line, increase economic benefit.
2nd, it is easy to operate, high precision：The nitrogen pressure sensor accuracy that the utility model is used is high, once monitor master
Road nitrogen pressure is too low, can the very first time signal pass to controller carry out sound and light alarm, so as to operating personnel switch to it is standby
Nitrogen, it is easy to operate all by independent solenoid valve control per nitrogen all the way.
Brief description of the drawings
Fig. 1 is system construction drawing of the present utility model.
Wherein, 1, reflow soldering nitrogen air inlet supervisor, the 11, first main solenoid valve, 12, first pressure sensor, 13, first
Manual pressure regulating valve, the 21, second main solenoid valve, 22, second pressure sensor, the 23, second manual pressure regulating valve, the 31, first standby electricity
Magnet valve, the 41, second standby magnetic valve.
Embodiment
The utility model is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment：
As shown in figure 1, a kind of reflow soldering welding nitrogen gas handling system, is carried out superfluous to the nitrogen air inlet to reflow soldering
Remaining control, it is ensured that the nitrogen supply (NS) in welding process, the gas handling system include control display device, respectively with reflow soldering nitrogen
Gas air inlet supervisor 1 connection the first air inlet branch road and the second air inlet branch road and respectively with the first air inlet branch road and the second air inlet branch
The nitrogen supply (NS) device of road connection, the first air inlet branch road and the second air inlet branch road include main air inlet branch road parallel with one another and standby
With air inlet branch road, main air inlet branch road is provided with main solenoid valve and pressure sensor, and standby air inlet branch road is provided with standby magnetic valve,
Main solenoid valve, standby magnetic valve and pressure sensor are connected with control display device respectively.
The first main solenoid valve 11 and first pressure sensor 12 are sequentially provided with the main air inlet branch road of first air inlet branch road, the
The second main solenoid valve 21 and second pressure sensor 22, the first air inlet branch road are sequentially provided with the main air inlet branch road of two air inlet branch roads
Standby air inlet branch road be provided with the first standby magnetic valve 31, the standby air inlet branch road of the second air inlet branch road is standby provided with second
Magnetic valve 41.
Control display device include controller, display lamp and buzzer, controller by relay respectively with the first main electricity
Magnet valve 11, the second main solenoid valve 21, the current supply circuit connection of the first standby magnetic valve 41 of standby magnetic valve 31 and second, and with
First pressure sensor 12 and first pressure sensor 22 are connected, and display lamp and buzzer are connected with controller respectively.
First manual pressure regulator valve 13, the second master are provided between first main solenoid valve 11 and reflow soldering nitrogen air inlet supervisor 1
The second manual pressure regulating valve 23 is provided between magnetic valve 21 and reflow soldering nitrogen air inlet supervisor 1.
Nitrogen supply (NS) device uses PSA nitrogen making machines and liquid nitrogen storage tank.
Operation principle of the present utility model is as follows：
Under normal circumstances, the main air inlet of the main air inlet branch road and the second air inlet branch road of the first air inlet branch road of the present utility model
Branch road is in running order, and nitrogen protection is provided to burner hearth；When the first pressure sensor 12 or second pressure sensor of nitrogen
22 monitor that the nitrogen pressure of the main air inlet branch road of the main air inlet branch road of the first air inlet branch road and the second air inlet branch road is too low, or
When the main air inlet branch road of first air inlet branch road and the main air inlet branch road of the second air inlet branch road break down, nitrogen pressure sensor meeting
Signal is transmitted to computer, alarmed, and standby air inlet branch road by controller automatic switchover air inlet to the first air inlet branch road and/
Or second air inlet branch road the work of standby air inlet branch road, when main air inlet branch road pressure recovers or after failture evacuation, controller is again
Nitrogen air inlet is switched into main air inlet branch road.
When carrying out air inlet, operating personnel can also manually be adjusted by manual pressure regulating valve to the pressure of pipeline.
Claims (6)
1. a kind of reflow soldering welds nitrogen gas handling system, Redundant Control is carried out to the nitrogen air inlet to reflow soldering, it is ensured that
Nitrogen supply (NS) in welding process, it is characterised in that the gas handling system include control display device, respectively with reflow soldering nitrogen
Gas air inlet supervisor (1) connection the first air inlet branch road and the second air inlet branch road and respectively with the first air inlet branch road and the second air inlet
The nitrogen supply (NS) device of branch road connection, the first described air inlet branch road and the second air inlet branch road include main air inlet parallel with one another
Branch road and standby air inlet branch road, described main air inlet branch road are provided with main solenoid valve and pressure sensor, described standby air inlet
Branch road is provided with standby magnetic valve, and described main solenoid valve, standby magnetic valve and pressure sensor is respectively with controlling display device
Connection.
2. a kind of reflow soldering welding nitrogen gas handling system according to claim 1, it is characterised in that described first enters
It is sequentially provided with the first main solenoid valve (11) and first pressure sensor (12) in the main air inlet branch road of gas branch road, described second enters
It is sequentially provided with the second main solenoid valve (21) and second pressure sensor (22) in the main air inlet branch road of gas branch road, described first enters
The standby air inlet branch road of gas branch road is provided with the first standby magnetic valve (31), the standby air inlet branch road of described the second air inlet branch road
It is provided with the second standby magnetic valve (41).
3. a kind of reflow soldering welding nitrogen gas handling system according to claim 2, it is characterised in that described control shows
Showing device includes controller, display lamp and buzzer, described controller by relay respectively with the first main solenoid valve (11),
The current supply circuit connection of second main solenoid valve (21), the first standby magnetic valve (31) and the second standby magnetic valve (41), and with
First pressure sensor (12) and second pressure sensor (22) connection, described display lamp and buzzer connect with controller respectively
Connect.
4. a kind of reflow soldering welding nitrogen gas handling system according to claim 3, it is characterised in that the first described master
First manual pressure regulator valve (13), the second described main electricity are provided between magnetic valve (11) and reflow soldering nitrogen air inlet supervisor (1)
The second manual pressure regulating valve (23) is provided between magnet valve (21) and reflow soldering nitrogen air inlet supervisor (1).
5. a kind of reflow soldering welding nitrogen gas handling system according to claim 1, it is characterised in that described nitrogen is supplied
Answering device includes PSA nitrogen making machines and liquid nitrogen storage tank.
6. a kind of reflow soldering welding nitrogen gas handling system according to claim 2, it is characterised in that the first described pressure
Force snesor (12) and second pressure sensor (22) model LF16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621436167.3U CN206335218U (en) | 2016-12-26 | 2016-12-26 | A kind of reflow soldering welds nitrogen gas handling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621436167.3U CN206335218U (en) | 2016-12-26 | 2016-12-26 | A kind of reflow soldering welds nitrogen gas handling system |
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| Publication Number | Publication Date |
|---|---|
| CN206335218U true CN206335218U (en) | 2017-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621436167.3U Active CN206335218U (en) | 2016-12-26 | 2016-12-26 | A kind of reflow soldering welds nitrogen gas handling system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108237294A (en) * | 2016-12-26 | 2018-07-03 | 上海朗仕电子设备有限公司 | A kind of reflow soldering welds nitrogen gas handling system |
| CN111299772A (en) * | 2020-02-25 | 2020-06-19 | 长春伟成机械设备有限公司 | Gantry submerged arc welding machine with automatic welding flux adjusting and drying functions |
-
2016
- 2016-12-26 CN CN201621436167.3U patent/CN206335218U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108237294A (en) * | 2016-12-26 | 2018-07-03 | 上海朗仕电子设备有限公司 | A kind of reflow soldering welds nitrogen gas handling system |
| CN111299772A (en) * | 2020-02-25 | 2020-06-19 | 长春伟成机械设备有限公司 | Gantry submerged arc welding machine with automatic welding flux adjusting and drying functions |
| CN111299772B (en) * | 2020-02-25 | 2021-10-22 | 长春伟成机械设备有限公司 | Gantry submerged arc welding machine with automatic welding flux adjusting and drying functions |
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