CN103197709A - Control system and control method of vacuum reflowing welder - Google Patents
Control system and control method of vacuum reflowing welder Download PDFInfo
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- CN103197709A CN103197709A CN2013101227130A CN201310122713A CN103197709A CN 103197709 A CN103197709 A CN 103197709A CN 2013101227130 A CN2013101227130 A CN 2013101227130A CN 201310122713 A CN201310122713 A CN 201310122713A CN 103197709 A CN103197709 A CN 103197709A
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Abstract
The invention discloses a control system and a control method of a vacuum reflowing welder. The control system comprises a touch screen, a heating controller, a vacuum pump actuator, a vacuum instrument, a water pump actuator, a temperature control sensor, a temperature detection sensor and a computer control center, wherein a time-temperature control curve is edited and displayed on the touch screen; the heating controller is connected with a heater and controls heating of the heater; the vacuum pump actuator is connected with a vacuum pump and enables the vacuum pump to conduct vacuum-pumping on a welding cavity in a controlling mode; the vacuum instrument detects the vacuum degree in the welding cavity; the water pump actuator is connected with a water pump and enables the water pump to conduct cooling water circulation in a controlling mode; the temperature control sensor is installed near the heater inside the welding cavity of the reflowing welder and detects the real-time temperature inside the welding cavity; the temperature detection sensor is installed inside the welding cavity of the reflowing welder and detects the real-time temperature of a weld assembly inside the welding cavity; and the computer control center is respectively connected with the touch screen, the heating controller, the vacuum pump actuator, the vacuum instrument, the water pump actuator, the temperature control sensor and the temperature detection sensor. The control system and the control method can accurately control the temperature inside the welding cavity.
Description
Technical field
The present invention relates to the reflow machine technical field, specifically a kind of vacuum reflow machine control system and method.
Background technology
Because chip component has appearred in the needs of the continuous miniaturization of electronic product pcb board, traditional welding method can not meet the needs of.Along with the development of surface mounting technology, also developed accordingly as the reflow machine of a surface mounting technology part, its application is extensive day by day, almost all is applied in all electronic product fields.Has well heater in the welding chamber that forms in the welding casing of reflow machine, so that the elements on circuit board that will weld in the chamber welds together by solder(ing) paste and the circuit board that melts.Because different solder(ing) pastes has different characteristics, so in welding, need control temperature by the ideal temperature curve that meets this solder(ing) paste welding performance according to used solder(ing) paste, in order to obtain the high quality welding product.Yet the temperature control system of existing reflow machine and method obtain actual temperature and the ideal temperature curve differs far away, reach higher quality level so the weldment that obtains is difficult.And the control in whole welding process between each step is not very perfect, influences work efficiency.
This shows that the control system of above-mentioned existing vacuum reflow machine obviously still has inconvenience and defective, and demands urgently further being improved in structure and use.The inventor is actively studied innovation, in the hope of founding a kind of vacuum reflow machine control system and method for novelty, makes it have more practicality.
Summary of the invention
In order to solve the above-mentioned problems in the prior art, the invention provides a kind of vacuum reflow machine control system of accurate control welding cavity temperature.
In order to solve the problems of the technologies described above, the invention provides following technical scheme:
Vacuum reflow machine control system comprises:
Touch-screen is edited and demonstration time-temperature control curve thereon;
Heating controller is connected with well heater, by the temperature control signals control heater heating that receives;
The vacuum pump driver is connected with vacuum pump, the control vacuum pump carry out reflow machine the welding chamber vacuumize processing;
Vacuum instrumentation is connected with the welding chamber of reflow machine, to detect the vacuum tightness in the welding chamber;
The water pump driver is connected with water pump, and the control water pump carries out the chilled water circulation;
Temperaturecontrol sensor is located near the well heater of reflow machine welding inside cavity, and the real time temperature in the welding chamber is surveyed;
Temperature detecting sensor is located in the welding chamber of reflow machine, surveys the real time temperature of weldment in the welding chamber;
Computer control center is connected with temperature detecting sensor with touch-screen, heating controller, vacuum pump driver, vacuum instrumentation, water pump driver, temperaturecontrol sensor respectively; Wherein
Computer control center sends a signal to the vacuum pump driver to drive vacuum pump work; When computer control center receive vacuum tightness data that vacuum instrumentation sends reach set require after, computer control center sends temperature control signals to heating controller, well heater is heated by time-temperature control curve, computer control center generates the time temperature data that are associated with time-temperature control curve of editing, and the temperature that temperaturecontrol sensor is detected with the time temperature data generation temperature control signals that combines;
Computer control center generates the actual temperature curve according to the real time temperature of temperature detecting sensor detection simultaneously, and is presented on the touch-screen; After welding was finished, computer control center sent a signal to the water pump driver and lowers the temperature to drive the water pump recirculated cooling water;
Time-temperature control curve is updated in contrast according to actual temperature curve and ideal temperature curve, reaches requirement until the actual temperature curve so repeatedly, and adds thermal weld by final time-temperature control curve.
As preferably, above-mentioned vacuum controlling system of welder, wherein said computer control center also connects the air pump driver, by air pump driver control air pump the chilled water circulation line is carried out drying earlier before heating.
As preferably; above-mentioned vacuum controlling system of welder; wherein said computer control center also connects safety return circuit; described safety return circuit comprises security lock arrangement, liquid level detection device, cavity loam cake switch pick-up unit and spin manifold temperature pick-up unit, and computer control center moves reflow machine by safety return circuit and protects.
As preferably, above-mentioned vacuum controlling system of welder, wherein said computer control center also connects for to the monitoring of welding process and the camera head of record.
As preferably, above-mentioned vacuum controlling system of welder, wherein edit session-temperature control curve is realized by the time temperature data that drag directly that curve or modification be associated with time-temperature control curve.
As preferably, above-mentioned vacuum controlling system of welder is wherein edited the overall offset that comprises the different time sections curve and the fine setting of part curve to described time-temperature control curve.
Another object of the present invention is for providing a kind of vacuum reflow machine control method of accurate control welding cavity temperature.The technical scheme that realizes this purpose is as follows:
Vacuum reflow machine control method comprises the steps:
A. edit session-temperature control curve;
B. the welding chamber to reflow soldering vacuumizes, when vacuum tightness reach set to require after, heat, wherein according to the real time temperature in the welding chamber of surveying adjust well heater set by step time-temperature control curve of obtaining of a inediting heat;
C. the real time temperature according to weldment in the welding chamber of detecting generates the actual temperature curve, and the control cooling system is lowered the temperature after welding is finished;
D. update time-temperature control curve according to the contrast of actual temperature curve and ideal temperature curve, after the actual temperature curve reaches requirement, determine final time-temperature control curve so repeatedly.
As preferably, above-mentioned vacuum reflow machine control method is wherein earlier carried out drying to the chilled water circulation passage in the cooling system before the heating.
As preferably; above-mentioned vacuum reflow machine control method; wherein protect reflow machine is moved by safety return circuit before heating and in the heating process, safety return circuit comprises security lock arrangement, liquid level detection device, cavity loam cake switch pick-up unit and spin manifold temperature pick-up unit.
As preferably, above-mentioned vacuum reflow machine control method is wherein implemented monitoring and record by camera system to welding process in the welding process.
As preferably, above-mentioned vacuum reflow machine control method, wherein edit session-temperature control curve is realized by the time temperature data that drag directly that curve or input be associated with time-temperature control curve.
As preferably, above-mentioned vacuum reflow machine control method is wherein edited the overall offset that comprises the different time sections curve and the fine setting of part curve to described time-temperature control curve.
As preferably, above-mentioned vacuum reflow machine control method, wherein by will be related with time-temperature control curve the time temperature data and detection the welding chamber in the real time temperature temperature control signals input heating controller that generates that combines come the control heater heating.
Compared with prior art, beneficial effect of the present invention is:
The present invention comes edit session-temperature control curve by directly dilatory curve, and come control heater to heat according to this control curve, and by the actual temperature generation actual temperature curve that detects, according to actual temperature curve and ideal temperature curve to recently adjusting time-temperature control curve, finally, actual temperature in the realization welding chamber conforms to the ideal temperature curve or approaches, and can accurately control the welding cavity temperature, improves the quality of weldment.And the inventive method is simple, and easy operating need not training and experience.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of instructions, below with preferred embodiment of the present invention and conjunction with figs. describe in detail as after.
Description of drawings
Fig. 1 is the structural representation of vacuum reflow machine control system of the present invention;
Fig. 2 is the schematic flow sheet of vacuum reflow machine control method of the present invention.
Embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, to its embodiment of the formula that fractures radome, structure, feature and the effect thereof that foundation the present invention proposes, describe in detail as after.In following explanation, the not necessarily same embodiment that different " embodiment " or " embodiment " refer to.In addition, special characteristic, structure or the characteristics among one or more embodiment can be by any suitable form combination.
Fig. 1 is the structural representation of vacuum reflow machine control system of the present invention.As shown in Figure 1, vacuum reflow machine control system comprises:
Touch-screen is edited and demonstration time-temperature control curve thereon;
Heating controller is connected with well heater, by the temperature control signals control heater heating that receives;
The vacuum pump driver is connected with vacuum pump, the control vacuum pump carry out reflow machine the welding chamber vacuumize processing;
Vacuum instrumentation is connected with the welding chamber of reflow machine, to detect the vacuum tightness in the welding chamber;
The water pump driver is connected with water pump, and the control water pump carries out the chilled water circulation;
Temperaturecontrol sensor is located near the well heater of reflow machine welding inside cavity, and the real time temperature in the welding chamber is surveyed;
Temperature detecting sensor is located in the welding chamber of reflow machine, surveys the real time temperature of weldment in the welding chamber;
Computer control center is connected with temperature detecting sensor with touch-screen, heating controller, vacuum pump driver, vacuum instrumentation, water pump driver, temperaturecontrol sensor respectively; Wherein
Computer control center sends a signal to the vacuum pump driver to drive vacuum pump work; When computer control center receive vacuum tightness data that vacuum instrumentation sends reach set require after, computer control center sends temperature control signals to heating controller, well heater is heated by time-temperature control curve, computer control center generates the time temperature data that are associated with time-temperature control curve of editing, and the temperature that temperaturecontrol sensor is detected with the time temperature data generation temperature control signals that combines;
Computer control center generates the actual temperature curve according to the real time temperature of temperature detecting sensor detection simultaneously, and is presented on the touch-screen; After welding was finished, computer control center sent a signal to the water pump driver and lowers the temperature to drive the water pump recirculated cooling water;
Time-temperature control curve is updated in contrast according to actual temperature curve and ideal temperature curve, reaches requirement until the actual temperature curve so repeatedly, and adds thermal weld by final time-temperature control curve.
The present invention heats by the time-temperature control curve of control heater by editor, and the actual temperature curve and the ideal temperature curve that obtain are compared adjustment time-temperature control curve, the actual temperature curve is conformed to the ideal temperature curve or approach, make the best performance of solder(ing) paste like this, significantly improve the quality of weldment (pcb board etc.).And each step in the welding process connects smooth and easy, further improves the quality of products and work efficiency.By temperaturecontrol sensor being arranged near the well heater, control heater heats according to time-temperature control curve of editor more accurately.
Preferred as above-described embodiment, wherein said computer control center also connects the air pump driver, by air pump driver control air pump the chilled water circulation line is carried out drying earlier before heating.The present invention earlier carried out drying by air pump to the chilled water circulation line before heating, avoided at high temperature causing because of residual chilled water harm such as blast.
Preferred as above-described embodiment; wherein said computer control center also connects safety return circuit; described safety return circuit comprises security lock arrangement, liquid level detection device, cavity loam cake switch pick-up unit and spin manifold temperature pick-up unit, and computer control center moves reflow machine by safety return circuit and protects.The each several part that has only computer control center to detect in the safety return circuit all just often just can send working signal, reflow machine just can heat welding job accordingly, and any part in the safety return circuit (exceeds safe range as liquid level unusually in welding process, spin manifold temperature surpasses safe-guard line etc.) all can report to the police or stop the reflow machine operation, avoid the generation of accident.
Preferred as above-described embodiment, wherein computer control center also connects for to the monitoring of welding process and the camera head of record.Improve the quality of products, avoid directly observing and the injury eyes.
Preferred as above-described embodiment, wherein edit session-temperature control curve is realized by the time temperature data that drag directly that curve or modification be associated with time-temperature control curve.By with mouse drag or on touch-screen with hand directly drag curve can make editor curve more directly perceived, convenient and swift.And by the time temperature data edit, can realize curve is accurately finely tuned.
As preferably, above-mentioned vacuum controlling system of welder is wherein edited the overall offset that comprises the different time sections curve and the fine setting of part curve to described time-temperature control curve.Can guarantee that the actual welding curve under some time period reaches the process curve requirement, obtains the time-temperature setting operation of complete matching technique curve at last.
The technical scheme of vacuum reflow machine control method provided by the invention is as follows: referring to Fig. 2 and above-mentioned description about the control system part, Fig. 2 is the schematic flow sheet of vacuum reflow machine control method of the present invention.Vacuum reflow machine control method comprises the steps:
A. edit session-temperature control curve;
B. the welding chamber to reflow soldering vacuumizes, when vacuum tightness reach set to require after, heat, wherein according to the real time temperature in the welding chamber of surveying adjust well heater set by step time-temperature control curve of obtaining of a inediting heat;
C. the real time temperature according to weldment in the welding chamber of detecting generates the actual temperature curve, and the control cooling system is lowered the temperature after welding is finished;
D. update time-temperature control curve according to the contrast of actual temperature curve and ideal temperature curve, after the actual temperature curve reaches requirement, determine final time-temperature control curve so repeatedly.
The inventive method has realized solder(ing) paste is welded by its ideal temperature curve intensification fusion, makes the best performance of solder(ing) paste, significantly improves the quality of weldment (pcb board etc.).And each step in the welding process connects smooth and easy, further improves the quality of products and work efficiency.
Preferred as above-described embodiment wherein earlier carries out drying to the chilled water circulation passage in the cooling system before the heating.Avoided retaining chilled water danger at high temperature.
Preferred as above-described embodiment; wherein protect reflow machine is moved by safety return circuit before heating and in the heating process, safety return circuit comprises security lock arrangement, liquid level detection device, cavity loam cake switch pick-up unit and spin manifold temperature pick-up unit.The safe operation that safety return circuit has guaranteed welding machine is set.
Preferred as above-described embodiment wherein implemented monitoring and record by camera system to welding process in the welding process.Avoided direct observation injury eyes, and can be used as each quality of welded and prove.
Preferred as above-described embodiment, the wherein time temperature data realization of edit session-temperature control curve by dragging directly that curve or input be associated with time-temperature control curve.Easy operating, difficulty are low.
Preferred as above-described embodiment wherein edited the overall offset that comprises the different time sections curve and the fine setting of part curve to described time-temperature control curve.
Preferred as above-described embodiment, wherein by will be related with time-temperature control curve the time temperature data and detection the welding chamber in the combine temperature control signals that generates of real time temperature import heating controller and come control heater to heat.
In addition, in system and method for the present invention, can also pass through to import the ideal temperature curve of solder(ing) paste in the coordinate system of edit session-temperature control curve, and be adjusted to both unit unanimity, thereby can be according to ideal temperature curve edit session-temperature control curve first.Reduced the difficulty of edit session-temperature control curve more, operating personnel needn't give training, also needn't have experience to get final product reality.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, any simple modification that foundation technical spirit of the present invention is done above embodiment, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (13)
1. vacuum reflow machine control system is characterized in that, comprising:
Touch-screen is edited and demonstration time-temperature control curve thereon;
Heating controller is connected with well heater, by the temperature control signals control heater heating that receives;
The vacuum pump driver is connected with vacuum pump, the control vacuum pump carry out reflow machine the welding chamber vacuumize processing;
Vacuum instrumentation is connected with the welding chamber of reflow machine, to detect the vacuum tightness in the welding chamber;
The water pump driver is connected with water pump, and the control water pump carries out the chilled water circulation;
Temperaturecontrol sensor is located near the well heater of reflow machine welding inside cavity, and the real time temperature in the welding chamber is surveyed;
Temperature detecting sensor is located in the welding chamber of reflow machine, surveys the real time temperature of weldment in the welding chamber;
Computer control center is connected with temperature detecting sensor with touch-screen, heating controller, vacuum pump driver, vacuum instrumentation, water pump driver, temperaturecontrol sensor respectively; Wherein
Computer control center sends a signal to the vacuum pump driver to drive vacuum pump work; When computer control center receive vacuum tightness data that vacuum instrumentation sends reach set require after, computer control center sends temperature control signals to heating controller, well heater is heated by time-temperature control curve, computer control center generates the time temperature data that are associated with time-temperature control curve of editing, and the temperature that temperaturecontrol sensor is detected with the time temperature data generation temperature control signals that combines;
Computer control center generates the actual temperature curve according to the real time temperature of temperature detecting sensor detection simultaneously, and is presented on the touch-screen; After welding was finished, computer control center sent a signal to the water pump driver and lowers the temperature to drive the water pump recirculated cooling water;
Time-temperature control curve is updated in contrast according to actual temperature curve and ideal temperature curve, reaches requirement until the actual temperature curve so repeatedly, and adds thermal weld by final time-temperature control curve.
2. vacuum controlling system of welder according to claim 1 is characterized in that, described computer control center also connects the air pump driver, by air pump driver control air pump the chilled water circulation line is carried out drying earlier before heating.
3. vacuum controlling system of welder according to claim 1; it is characterized in that; described computer control center also connects safety return circuit; described safety return circuit comprises security lock arrangement, liquid level detection device, cavity loam cake switch pick-up unit and spin manifold temperature pick-up unit, and computer control center moves reflow machine by safety return circuit and protects.
4. vacuum controlling system of welder according to claim 1 is characterized in that, described computer control center also connects for to the monitoring of welding process and the camera head of record.
5. vacuum controlling system of welder according to claim 1 is characterized in that, wherein edit session-temperature control curve is realized by the time temperature data that drag directly that curve or modification be associated with time-temperature control curve.
6. vacuum controlling system of welder according to claim 1 is characterized in that, wherein described time-temperature control curve is edited the overall offset that comprises the different time sections curve and the fine setting of part curve.
7. vacuum reflow machine control method is characterized in that, comprises the steps:
A. edit session-temperature control curve;
B. the welding chamber to reflow soldering vacuumizes, when vacuum tightness reach set to require after, heat, wherein according to the real time temperature in the welding chamber of surveying adjust well heater set by step time-temperature control curve of obtaining of a inediting heat;
C. the real time temperature according to weldment in the welding chamber of detecting generates the actual temperature curve, and the control cooling system is lowered the temperature after welding is finished;
D. update time-temperature control curve according to the contrast of actual temperature curve and ideal temperature curve, after the actual temperature curve reaches requirement, determine final time-temperature control curve so repeatedly.
8. vacuum reflow machine control method according to claim 7 is characterized in that, earlier the chilled water circulation passage in the cooling system is carried out drying before the heating.
9. vacuum reflow machine control method according to claim 7; it is characterized in that; protect reflow machine is moved by safety return circuit before heating and in the heating process, safety return circuit comprises security lock arrangement, liquid level detection device, cavity loam cake switch pick-up unit and spin manifold temperature pick-up unit.
10. vacuum reflow machine control method according to claim 7 is characterized in that, by camera system welding process is implemented monitoring and record in the welding process.
11. vacuum reflow machine control method according to claim 7 is characterized in that, wherein edit session-temperature control curve is realized by the time temperature data that drag directly that curve or input be associated with time-temperature control curve.
12. vacuum reflow machine control method according to claim 7 is characterized in that, wherein described time-temperature control curve is edited the overall offset that comprises the different time sections curve and the fine setting of part curve.
13. vacuum reflow machine control method according to claim 7, it is characterized in that, wherein by will be related with time-temperature control curve the time temperature data and detection the welding chamber in the real time temperature temperature control signals input heating controller that generates that combines come the control heater heating.
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| CN107639316A (en) * | 2016-07-21 | 2018-01-30 | 鸿骐新技股份有限公司 | Chamber profile reflow oven board and its temperature self-compensation control method |
| CN111805038A (en) * | 2019-04-10 | 2020-10-23 | 薛星海 | Offline positive-pressure welding furnace system and operation method thereof |
| CN111805039A (en) * | 2019-04-11 | 2020-10-23 | 薛星海 | Online positive pressure welding furnace system and operation method thereof |
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| CN111805038A (en) * | 2019-04-10 | 2020-10-23 | 薛星海 | Offline positive-pressure welding furnace system and operation method thereof |
| CN111805039A (en) * | 2019-04-11 | 2020-10-23 | 薛星海 | Online positive pressure welding furnace system and operation method thereof |
| CN111805039B (en) * | 2019-04-11 | 2022-02-08 | 中科同帜半导体(江苏)有限公司 | Online positive pressure welding furnace system and operation method thereof |
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| CN103197709B (en) | 2015-03-18 |
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Application publication date: 20130710 Assignee: Beijing torch Technology Co. Ltd. Assignor: Beijing Zhongke Torch Technology Co., Ltd. Contract record no.: 2015990000593 Denomination of invention: Control system and control method of vacuum reflowing welder Granted publication date: 20150318 License type: Exclusive License Record date: 20150709 |
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Address after: 100016, No. 6, Jiuxianqiao Road, building 1, building 10, Chaoyang District, Beijing, China. 6D Patentee after: BEIJING ZHONGKE TORCH TECHNOLOGY CO., LTD. Address before: 100016, No. 6, Jiuxianqiao Road, building 1, building 10, Chaoyang District, Beijing, China. 6D Patentee before: Beijing Zhongke Torch Technology Co., Ltd. |