CN114484277A - Nitrogen saving system based on BTU reflow furnace and control method thereof - Google Patents
Nitrogen saving system based on BTU reflow furnace and control method thereof Download PDFInfo
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- CN114484277A CN114484277A CN202210014345.7A CN202210014345A CN114484277A CN 114484277 A CN114484277 A CN 114484277A CN 202210014345 A CN202210014345 A CN 202210014345A CN 114484277 A CN114484277 A CN 114484277A
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- China
- Prior art keywords
- nitrogen
- btu
- flow valve
- control module
- flow
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Links
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 179
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 80
- 238000000034 method Methods 0.000 title claims abstract description 17
- 229910001873 dinitrogen Inorganic materials 0.000 claims abstract description 19
- 230000033228 biological regulation Effects 0.000 claims abstract description 4
- 230000001276 controlling effect Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 4
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 4
- 230000006698 induction Effects 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000001960 triggered effect Effects 0.000 abstract 2
- 230000002159 abnormal effect Effects 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
Abstract
The invention discloses a nitrogen saving system based on a BTU reflow oven and a control method thereof, wherein the nitrogen saving system comprises the following steps: PLC control module, flow valve, touch screen display show the ware, the flow valve sets up on the nitrogen gas pipeline to the flow of regulation and control nitrogen gas, PLC control module respectively with flow valve and touch screen display show the ware and are connected, in order to control flow control valve. Through the mode, the nitrogen saving system based on the BTU reflow furnace and the control method thereof have the advantages that the two nitrogen saving modes are arranged in the system, so that the first nitrogen saving mode is automatically triggered during normal production, 25% of nitrogen can be saved, when no circuit board exists in the BTU due to abnormal production, the second nitrogen saving mode is automatically triggered, 50% of nitrogen can be saved, the nitrogen conveying accuracy and efficiency are improved, the cost is reduced, and energy is saved.
Description
Technical Field
The invention relates to the technical field of SMT surface mounting assembly lines, in particular to a nitrogen saving system based on a BTU reflow furnace and a control method thereof.
Background
At present, in the process of a BTU reflow oven, when the BTU reflow oven starts a nitrogen function, the BTU reflow oven is rapidly filled with nitrogen for half an hour, when the oven cavity is full of nitrogen, the rapid nitrogen filling function is closed, and the BTU reflow oven starts to continuously fill nitrogen for the BTU with full load. This control method has the following problems:
1. with circuit boards in the BTU reflow oven, the nitrogen is consumed too much as the BTU nitrogen is continuously supplied at full load.
When there is no board in the BTU reflow furnace, the BTU nitrogen is still fully loaded and continuously supplied, resulting in nitrogen waste.
Disclosure of Invention
The invention mainly solves the technical problem of providing a nitrogen saving system based on a BTU reflow furnace and a control method thereof, has the advantages of high reliability, energy conservation, emission reduction and the like, and has wide market prospect in the application and popularization of small numerical control machines.
In order to solve the technical problems, the invention adopts a technical scheme that:
provided is a nitrogen saving system based on a BTU reflow oven, which includes: PLC control module, flow valve, touch-screen display show ware, the flow valve sets up on the nitrogen gas pipeline to the flow of regulation and control nitrogen gas, PLC control module respectively with flow valve and touch-screen display show ware and are connected to control flow valve, touch-screen display show ware be used for real-time input work order and look over the operating condition of the BTU reflow oven and the flow valve that show, are provided with first festival nitrogen control module and second festival nitrogen control module in the PLC control module.
A control method of a nitrogen saving system based on a BTU reflow oven comprises the following steps:
(1) when the BTU reflow furnace starts to use the nitrogen function, the BTU reflow furnace carries out rapid nitrogen filling according to preset nitrogen filling time, a sensor detects the content of nitrogen in the reflow furnace in real time, and a detection signal is input to a PLC control module in real time and used for controlling a first nitrogen control mode and a second nitrogen control mode;
(2) when the furnace chamber of the reflow furnace is filled with nitrogen, the BTU reflow furnace sends out a rapid nitrogen filling end signal;
(3) when the PLC control module receives a rapid nitrogen filling ending signal, the PLC control module outputs a signal of a first nitrogen control mode to the flow valve, and adjusts the flow valve according to preset first-stage adjusting parameters and second-stage adjusting parameters, so that the flow and the opening time of nitrogen are adjusted; wherein the first-stage regulating parameters comprise a first-stage flow value and a first-stage opening time; the second-stage adjusting parameters comprise a second-stage flow value and a second-stage opening time;
(4) when no product is detected by induction in the BTU reflow oven, the BTU reflow oven feeds back a detection signal to the PLC control module; when no product is detected in the BTU reflow oven in a sensing mode within the preset sensing time, the PLC control module outputs a signal of a second nitrogen-saving control mode to the flow valve and adjusts the flow valve according to preset second mode adjusting parameters to continuously output nitrogen, wherein the second mode adjusting parameters comprise a second flow value and second opening time;
(5) when the return furnace front rail senses a product, the rail feeds back a signal to the PLC control module, and the PLC control module outputs a signal of a first section of nitrogen control mode to the flow valve and adjusts the flow valve.
In a preferred embodiment of the invention, the first nitrogen charging time is half an hour.
In a preferred embodiment of the invention, the first flow value is a flow valve full open value, and the first open time is 1 minute; the second flow value is the flow valve half-open value and the second open time is 1 minute.
In a preferred embodiment of the invention, the sensing time is half an hour.
In a preferred embodiment of the invention, the second flow value is a flow valve ajar value.
The invention has the beneficial effects that: through setting up two kinds of festival nitrogen modes in the system for when normal production, the first festival nitrogen mode of automatic trigger can save 25% nitrogen gas, when production abnormity leads to in the BTU not having the circuit board, the second nitrogen mode of automatic trigger can save 50 nitrogen gas, improves the accurate nature and the high efficiency that nitrogen gas carried, reduce cost, the energy saving.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention comprises the following steps:
the utility model provides a nitrogen gas saving system based on BTU reflow oven, its includes that PLC control module, flow valve, touch-screen display show the ware, at the flow valve of nitrogen gas house steward road installation for the flow of regulation and control nitrogen gas, PLC control module respectively with flow valve and touch-screen display show the ware and are connected to control flow valve, the user can show the ware through touch-screen display and show real-time input work order or look over the operating condition of the BTU reflow oven and the flow valve that show.
Be provided with first section nitrogen control module and second section nitrogen control module in the PLC control module. The input signal of the flow valve is accessed to a PLC control module so as to achieve the purpose of controlling the flow valve by the PLC; and the output signal (with a product input signal) of the rapid nitrogen charging is connected to the PLC control module to achieve the function of starting the first nitrogen control module, and the product sensor signal (without the product input signal) on the BTU reflow oven track is connected to the PLC control module to achieve the function of starting the second nitrogen control module.
A control method of a nitrogen saving system based on a BTU reflow oven comprises the following steps:
(1) when the BTU reflow furnace uses the nitrogen function, the BTU reflow furnace is firstly and quickly filled with nitrogen for half an hour, and the content of the nitrogen in the reflow furnace is detected in real time.
(2) And inputting a signal (DC 24) of the rapid nitrogen filling of the BTU reflow oven into the PLC control module in real time, and controlling the first nitrogen-saving control mode and the second nitrogen-saving control mode. When the furnace chamber is full of nitrogen, the BTU reflow furnace sends out a rapid nitrogen charging end signal.
(3) After the PLC control module receives a finishing signal of rapid nitrogen charging, the PLC control module starts to output a signal of a first nitrogen control mode to the flow valve so as to enable the flow valve to be fully opened for 1 minute for nitrogen charging firstly and then to be half opened for one minute for nitrogen charging through the flow of nitrogen adjusted by the flow valve. Or the flow valve can set the flow and the opening time according to the actual conditions.
(4) When not sensing product (circuit board) in the BTU backward flow stove, the BTU backward flow stove feeds back the detected signal to PLC control module, and when not sensing product (circuit board) in the BTU backward flow stove surpassed half an hour, PLC control module output second festival nitrogen control mode's signal gives the flow valve for the flow valve adjusts to half-open (can set for according to actual conditions) state in order to carry out the continuous output of nitrogen gas.
(5) When the track in front of the reflow oven senses a product (a circuit board), the track feeds back a signal to the PLC control module, and the PLC control module outputs a signal of a first nitrogen control mode to the flow valve.
The nitrogen saving system based on the BTU reflow furnace and the control method thereof have the beneficial effects that: through setting up two kinds of festival nitrogen modes in the system for when normal production, the first festival nitrogen mode of automatic trigger can save 25% nitrogen gas, when production abnormity leads to in the BTU not having the circuit board, the second nitrogen mode of automatic trigger can save 50 nitrogen gas, improves the accurate nature and the high efficiency that nitrogen gas carried, reduce cost, the energy saving.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (6)
1. A nitrogen gas saving system based on a BTU reflow oven, comprising: PLC control module, flow valve, touch-screen display show ware, the flow valve sets up on the nitrogen gas pipeline to the flow of regulation and control nitrogen gas, PLC control module respectively with flow valve and touch-screen display show ware and are connected to control flow valve, touch-screen display show ware be used for real-time input work order and look over the operating condition of the BTU reflow oven and the flow valve that show, are provided with first festival nitrogen control module and second festival nitrogen control module in the PLC control module.
2. A control method of a nitrogen saving system based on a BTU reflow furnace is characterized by comprising the following steps:
(1) when the BTU reflow furnace starts to use the nitrogen function, the BTU reflow furnace carries out rapid nitrogen filling according to preset nitrogen filling time, a sensor detects the content of nitrogen in the reflow furnace in real time, and a detection signal is input to a PLC control module in real time and used for controlling a first nitrogen control mode and a second nitrogen control mode;
(2) when the furnace chamber of the reflow furnace is filled with nitrogen, the BTU reflow furnace sends out a rapid nitrogen filling end signal;
(3) when the PLC control module receives a rapid nitrogen filling ending signal, the PLC control module outputs a signal of a first nitrogen control mode to the flow valve, and adjusts the flow valve according to preset first-stage adjusting parameters and second-stage adjusting parameters, so that the flow and the opening time of nitrogen are adjusted; wherein the first-stage regulating parameters comprise a first-stage flow value and a first-stage opening time; the second-stage adjusting parameters comprise a second-stage flow value and a second-stage opening time;
(4) when no product is detected by induction in the BTU reflow oven, the BTU reflow oven feeds back a detection signal to the PLC control module; when no product is detected in the BTU reflow oven in a sensing mode within the preset sensing time, the PLC control module outputs a signal of a second nitrogen-saving control mode to the flow valve and adjusts the flow valve according to preset second mode adjusting parameters to continuously output nitrogen, wherein the second mode adjusting parameters comprise a second flow value and second opening time;
(5) when the return furnace front rail senses a product, the rail feeds back a signal to the PLC control module, and the PLC control module outputs a signal of a first section of nitrogen control mode to the flow valve and adjusts the flow valve.
3. The method as claimed in claim 2, wherein the first nitrogen charging time is half an hour.
4. The BTU reflow oven based nitrogen saving system and the control method thereof according to claim 2, wherein the first flow value is a flow valve full open value, and the first open time is 1 minute; the second flow value is the flow valve half-open value and the second open time is 1 minute.
5. The BTU reflow oven-based nitrogen gas saving system and the control method thereof according to claim 2, wherein the sensing time is half an hour.
6. The BTU reflow oven based nitrogen gas saving system and the control method thereof as claimed in claim 2, wherein the second flow value is a flow valve ajar value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210014345.7A CN114484277A (en) | 2022-01-07 | 2022-01-07 | Nitrogen saving system based on BTU reflow furnace and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210014345.7A CN114484277A (en) | 2022-01-07 | 2022-01-07 | Nitrogen saving system based on BTU reflow furnace and control method thereof |
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| CN114484277A true CN114484277A (en) | 2022-05-13 |
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| CN202210014345.7A Pending CN114484277A (en) | 2022-01-07 | 2022-01-07 | Nitrogen saving system based on BTU reflow furnace and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101048042A (en) * | 2006-03-30 | 2007-10-03 | 田村古河机械株式会社 | Reflow oven |
| CN204277169U (en) * | 2014-12-05 | 2015-04-22 | 东莞市邰正节能科技有限公司 | A kind of confession nitrogen energy-saving controller of reflow soldering |
| CN205309503U (en) * | 2016-01-12 | 2016-06-15 | 深圳市大创自动化设备有限公司 | Reflow furnace's nitrogen gas supply system |
| CN106695048A (en) * | 2016-12-21 | 2017-05-24 | 通富微电子股份有限公司 | Reflow soldering furnace and control system thereof |
| CN206316504U (en) * | 2016-12-14 | 2017-07-11 | 苏州世伍克机电设备有限公司 | Reflow soldering flow energy saver |
| CN107329502A (en) * | 2017-08-30 | 2017-11-07 | 伟创力电子技术(苏州)有限公司 | One kind automatically controls nitrogen flow system |
| CN210548677U (en) * | 2019-09-30 | 2020-05-19 | 上海宝闵工业气体有限公司 | Device for monitoring and adjusting atmosphere of nitrogen reflow furnace in real time |
| CN111266686A (en) * | 2018-12-04 | 2020-06-12 | 西安中科恒境环保科技有限公司 | Intelligent control method and system for nitrogen reflow oven |
| CN111455401A (en) * | 2020-04-21 | 2020-07-28 | 新疆中泰创新技术研究院有限责任公司 | Nitrogen charging system of electrolytic cell |
| CN111805046A (en) * | 2020-07-09 | 2020-10-23 | 武汉倍普科技有限公司 | Oxygen control system of reflow oven |
| CN213945202U (en) * | 2020-12-11 | 2021-08-13 | 深圳市长宝田科技有限公司 | Reflow oven flow energy-saving device |
-
2022
- 2022-01-07 CN CN202210014345.7A patent/CN114484277A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101048042A (en) * | 2006-03-30 | 2007-10-03 | 田村古河机械株式会社 | Reflow oven |
| CN204277169U (en) * | 2014-12-05 | 2015-04-22 | 东莞市邰正节能科技有限公司 | A kind of confession nitrogen energy-saving controller of reflow soldering |
| CN205309503U (en) * | 2016-01-12 | 2016-06-15 | 深圳市大创自动化设备有限公司 | Reflow furnace's nitrogen gas supply system |
| CN206316504U (en) * | 2016-12-14 | 2017-07-11 | 苏州世伍克机电设备有限公司 | Reflow soldering flow energy saver |
| CN106695048A (en) * | 2016-12-21 | 2017-05-24 | 通富微电子股份有限公司 | Reflow soldering furnace and control system thereof |
| CN107329502A (en) * | 2017-08-30 | 2017-11-07 | 伟创力电子技术(苏州)有限公司 | One kind automatically controls nitrogen flow system |
| CN111266686A (en) * | 2018-12-04 | 2020-06-12 | 西安中科恒境环保科技有限公司 | Intelligent control method and system for nitrogen reflow oven |
| CN210548677U (en) * | 2019-09-30 | 2020-05-19 | 上海宝闵工业气体有限公司 | Device for monitoring and adjusting atmosphere of nitrogen reflow furnace in real time |
| CN111455401A (en) * | 2020-04-21 | 2020-07-28 | 新疆中泰创新技术研究院有限责任公司 | Nitrogen charging system of electrolytic cell |
| CN111805046A (en) * | 2020-07-09 | 2020-10-23 | 武汉倍普科技有限公司 | Oxygen control system of reflow oven |
| CN213945202U (en) * | 2020-12-11 | 2021-08-13 | 深圳市长宝田科技有限公司 | Reflow oven flow energy-saving device |
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