CN202411611U - Nitrogen automatic switching-off system for reflow oven - Google Patents
Nitrogen automatic switching-off system for reflow oven Download PDFInfo
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- CN202411611U CN202411611U CN2011205164495U CN201120516449U CN202411611U CN 202411611 U CN202411611 U CN 202411611U CN 2011205164495 U CN2011205164495 U CN 2011205164495U CN 201120516449 U CN201120516449 U CN 201120516449U CN 202411611 U CN202411611 U CN 202411611U
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Abstract
The utility model discloses a nitrogen automatic switching-off system for a reflow oven. The nitrogen automatic switching-off system comprises a detection sensor, a relay, a delay relay and an electromagnetic valve, wherein the detection sensor is arranged close to the charging hole of the reflow oven, and is electrically connected with the relay, the delay relay and the electromagnetic valve; when a PCB (Printed Circuit Board) enters the reflow oven, the detection sensor is used for outputting an electric signal for activating the relay, and the relay is used for outputting a signal to the delay relay; when the delay relay reaches set time, a signal is output to the electromagnetic valve for opening a nitrogen gas path; and when the entrance of the PCB into the reflow oven is not sensed within set time by using the detection sensor, the relay is used for transmitting a signal to the electromagnetic valve for switching off the nitrogen gas path off. In the nitrogen automatic switching-off system, when the entrance of the PCB is detected by the detection sensor, the signal is transmitted for switching on the electromagnetic valve. A signal is output for switching on the electromagnetic valve when the entrance of the PCB is sensed through the detection sensor, and the supply of nitrogen gas is cut off by switching off the electromagnetic valve when an output signal of the detection sensor is not received by using the delay relay within set time, so that the aims of achieving a simple structure and a reasonable design, lowering cost and avoiding waste are fulfilled.
Description
Technical field
The utility model relates to the reflow soldering field in the electronics processing, is specifically related to a kind of reflow soldering nitrogen automatic closing system.
Background technology
In electronics processing and manufacturing industry; In pcb board manufacturing process; Need put into the processing procedure that welds of reflow soldering; Because of improving the consideration of quality, need in reflow soldering, supply with nitrogen, supplying with nitrogen amount is by reflow soldering control and maintenance sustainable supply according to the parameter of setting (oxygen content).In the prior art, stopping to produce or intermittently unproductive the time, all be the artificial supply of cutting off nitrogen through operation control valve.
Yet, sometimes when stopping to produce, artificial leakage can occur and forget intermittently unproductive situation of closing control valve or no worker monitor, reflow soldering will sustainable supply nitrogen, thereby cause unnecessary waste and energy loss, and production cost is increased.
The utility model content
For solving the problems of the technologies described above; We have proposed a kind of reflow soldering nitrogen automatic closing system; Through when said reflow soldering charging aperture installing acquisition sensor sensing has pcb board to get into, outputing signal to relay and time-delay relay is opened magnetic valve; When not receiving the signal of acquisition sensor output,, closed electromagnetic valve supplies with thereby cutting off nitrogen automatically in the time that time-delay relay reaches setting.
For achieving the above object, the technical scheme of the utility model is following:
A kind of reflow soldering nitrogen automatic closing system is made up of acquisition sensor, relay, time-delay relay and magnetic valve; Said acquisition sensor is installed near said reflow soldering charging aperture, and electrically connects with said relay, time-delay relay and magnetic valve;
When pcb board got into reflow soldering, the said acquisition sensor output signal of telecommunication activated said relay, and said relay is exported a signal again and given said time-delay relay;
The signal of time output that reaches setting when said time-delay relay opens the nitrogen gas circuit for said magnetic valve; When not sensed pcb board entering reflow soldering in the time that acquisition sensor is being set, said relay sends a signal again and cuts off the nitrogen gas circuit for said closed electromagnetic valve.
Preferably, said acquisition sensor is near switch.
Preferably, said acquisition sensor and said relay rated voltage are direct current 24V.
Preferably, said time-delay relay and said magnetic valve rated voltage are alternating current 220V.
Pass through technique scheme; The utility model is through outputing signal to relay and time-delay relay is opened magnetic valve when said reflow soldering charging aperture installing acquisition sensor sensing has pcb board to get into; When not receiving the signal of acquisition sensor output in the time that time-delay relay reaches setting; Closed electromagnetic valve cuts off nitrogen automatically and supplies with, thereby has reached purpose simple in structure, reasonable in design, that reduce cost and avoid waste.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiment of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of the disclosed a kind of reflow soldering nitrogen automatic closing system of the utility model embodiment;
Fig. 2 is the electrical schematic diagram of the disclosed a kind of reflow soldering nitrogen automatic closing system of the utility model embodiment.
The numeral corresponding component title represented among the figure with letter:
1. near switch 2. relays 3. time-delay relays 4. magnetic valves
5. reflow soldering 51. charging aperture 6.PCB plates
The specific embodiment
To combine the accompanying drawing among the utility model embodiment below, the technical scheme among the utility model embodiment is carried out clear, intactly description, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
The utility model provides a kind of reflow soldering nitrogen automatic closing system; Its operation principle is through when said reflow soldering charging aperture installing acquisition sensor sensing has pcb board to get into, outputing signal to relay and time-delay relay is opened magnetic valve; When not receiving the signal of acquisition sensor output,, closed electromagnetic valve supplies with thereby cutting off nitrogen automatically in the time that time-delay relay reaches setting.
Below in conjunction with the embodiment and the specific embodiment the utility model is done further detailed explanation.
Embodiment.
Like Fig. 1, shown in Figure 2, a kind of reflow soldering nitrogen automatic closing system is by forming near switch 1, relay 2, time-delay relay 3 and magnetic valve 4; Said near switch 1 near 51 installings of said reflow soldering 5 charging apertures, and electrically connect with said relay 2, time-delay relay 3 and magnetic valve 4; When pcb board 6 gets into reflow solderings 5, saidly activate said relay 2 near the switch 1 output signal of telecommunication, said relay 2 is exported a signal again and is given said time-delay relay 3; The signal of time output that reaches setting when said time-delay relay 3 opens the nitrogen gas circuit for said magnetic valve 4; When not sensed pcb board 6 entering reflow solderings 5 in the time of setting near switch 1, said relay 2 sends a signal again and cuts out cut-out nitrogen gas circuit for said magnetic valve 4.Wherein, said is direct current 24V near switch 1 with said relay 2 rated voltages; Said time-delay relay 3 is an alternating current 220V with said magnetic valve 4 rated voltages.
The operation principle of present technique scheme is: as shown in Figure 1, in pcb board 6 manufacturing process, need put into the processing procedure that welds of reflow soldering 5, and because of improving the consideration of quality, need in reflow soldering, supply with nitrogen, the supply of nitrogen amount is by magnetic valve 4 controls.As shown in Figure 2, when pcb board 6 gets into the charging aperture 51 of reflow soldering 5, will detect and export the signal of telecommunication near switch 1 and activate relay 2, relay 2 is exported a signal again and is given time-delay relay 3 then; The time that reaches setting when time-delay relay 3 will be exported a signal to magnetic valve 4, and magnetic valve 4 is opened in the nitrogen entering reflow soldering 5.
In addition; When stopping to produce, when not sensed pcb board 6 in the time of setting near switch 1 when getting into reflow solderings 5, said relay 2 also can send a signal and cut out for said magnetic valve 4; Thereby cut off the nitrogen gas circuit; Nitrogen consumption is saved in the operation that the special monitoring of need not disposing available manpower is produced, thus cost saving and avoid energy waste.
Pass through technique scheme; The utility model opens magnetic valve 4 through when 51 installings of said reflow soldering 5 charging apertures have pcb board 6 to get near switch 1 sensing, outputing signal to relay 2 with time-delay relay 3; When not receiving the signal near switch 1 output in the time that time-delay relay 3 reaches setting; Magnetic valve 4 cuts out automatic cut-out nitrogen and supplies with, thereby has reached purpose simple in structure, reasonable in design, that reduce cost and avoid waste.
To the above-mentioned explanation of disclosed a kind of reflow soldering nitrogen automatic closing system embodiment, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation of spirit that does not break away from the utility model or scope in other embodiments among this paper.Therefore, the utility model will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (4)
1. a reflow soldering nitrogen automatic closing system is characterized in that, is made up of acquisition sensor, relay, time-delay relay and magnetic valve; Said acquisition sensor is installed near said reflow soldering charging aperture, and electrically connects with said relay, time-delay relay and magnetic valve;
When pcb board got into reflow soldering, the said acquisition sensor output signal of telecommunication activated said relay, and said relay is exported a signal again and given said time-delay relay;
The signal of time output that reaches setting when said time-delay relay opens the nitrogen gas circuit for said magnetic valve; When not sensed pcb board entering reflow soldering in the time that acquisition sensor is being set, said relay sends a signal again and cuts off the nitrogen gas circuit for said closed electromagnetic valve.
2. a kind of reflow soldering nitrogen automatic closing system according to claim 1 is characterized in that said acquisition sensor is near switch.
3. a kind of reflow soldering nitrogen automatic closing system according to claim 1 is characterized in that said acquisition sensor and said relay rated voltage are direct current 24V.
4. a kind of reflow soldering nitrogen automatic closing system according to claim 1 is characterized in that said time-delay relay and said magnetic valve rated voltage are alternating current 220V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205164495U CN202411611U (en) | 2011-12-13 | 2011-12-13 | Nitrogen automatic switching-off system for reflow oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205164495U CN202411611U (en) | 2011-12-13 | 2011-12-13 | Nitrogen automatic switching-off system for reflow oven |
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| Publication Number | Publication Date |
|---|---|
| CN202411611U true CN202411611U (en) | 2012-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011205164495U Expired - Fee Related CN202411611U (en) | 2011-12-13 | 2011-12-13 | Nitrogen automatic switching-off system for reflow oven |
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| CN (1) | CN202411611U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104349660A (en) * | 2013-08-06 | 2015-02-11 | 珠海格力电器股份有限公司 | Reflow furnace monitoring system and control method thereof |
| CN104416256A (en) * | 2013-08-23 | 2015-03-18 | 珠海格力电器股份有限公司 | Intelligent brazing nitrogen-filling monitoring equipment |
| US20150314401A1 (en) * | 2012-12-14 | 2015-11-05 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Portable equipment for monitoring and controlling the level of oxygen in reflow oven atmosphere |
| CN106513909A (en) * | 2016-11-18 | 2017-03-22 | 罗国武 | Wave-soldering nitrogen protection equipment |
| 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 |
| CN111805046A (en) * | 2020-07-09 | 2020-10-23 | 武汉倍普科技有限公司 | Oxygen control system of reflow oven |
-
2011
- 2011-12-13 CN CN2011205164495U patent/CN202411611U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150314401A1 (en) * | 2012-12-14 | 2015-11-05 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Portable equipment for monitoring and controlling the level of oxygen in reflow oven atmosphere |
| US9539672B2 (en) * | 2012-12-14 | 2017-01-10 | L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude | Portable equipment for monitoring and controlling the level of oxygen in reflow oven atmosphere |
| CN104349660A (en) * | 2013-08-06 | 2015-02-11 | 珠海格力电器股份有限公司 | Reflow furnace monitoring system and control method thereof |
| CN104349660B (en) * | 2013-08-06 | 2017-12-15 | 珠海格力电器股份有限公司 | Reflow furnace monitoring system and control method thereof |
| CN104416256A (en) * | 2013-08-23 | 2015-03-18 | 珠海格力电器股份有限公司 | Intelligent brazing nitrogen-filling monitoring equipment |
| CN106513909A (en) * | 2016-11-18 | 2017-03-22 | 罗国武 | Wave-soldering nitrogen protection equipment |
| 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 |
| CN111805046A (en) * | 2020-07-09 | 2020-10-23 | 武汉倍普科技有限公司 | Oxygen control system of reflow oven |
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| Date | Code | Title | Description |
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| 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: 20120905 Termination date: 20131213 |