CN103105877A - BGA repair workstation multi-point temperature measurement temperature-control system - Google Patents
BGA repair workstation multi-point temperature measurement temperature-control system Download PDFInfo
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- CN103105877A CN103105877A CN 201110360741 CN201110360741A CN103105877A CN 103105877 A CN103105877 A CN 103105877A CN 201110360741 CN201110360741 CN 201110360741 CN 201110360741 A CN201110360741 A CN 201110360741A CN 103105877 A CN103105877 A CN 103105877A
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Abstract
The invention relates to a BGA repair workstation, in particular to a BGA repair workstation multi-point temperature measurement temperature-control system in the BGA repair workstation. The BGA repair workstation multi-point temperature measurement temperature-control system comprises a K type thermocouple temperature sensor, a temperature-control module and a hot air heating system, wherein the temperature-control module is directly connected with the sensor and directly conducts data conversion, data calculation and data output, and the hot air heating system can be controlled in a programmable mode. The BGA repair workstation multi-point temperature measurement temperature-control system is characterized in that the temperature sensor chooses a K type thermocouple, the temperature-control module is directly connected with the sensor, the module directly conducts data conversion, data calculation and data output, the hot air heating system capable of being controlled in the programmable mode is provided with a hot air flow control system, and a quality air flow meter is utilized for controlling heating of the system. The BGA repair workstation multi-point temperature measurement temperature-control system is high in accuracy, rapid to respond, and reliable in performance, and forcefully guarantees the fact that the heating system can provide appropriate temperature.
Description
Technical field
The present invention relates to a kind of BGA reclamation work station temperature control system, a kind of BGA reclamation work station multipoint temperature measuring temperature control system is provided.
Background technology
The technology of reprocessing of BGA is how BGA device not damaged is disassembled from PCB, newer device is mounted up exactly and carry out high-quality welding.
At first dismounting BGA will heat BGA, and type of heating can adopt hot air convection and infrared radiation dual mode, and it is controllable usually requiring heating-up temperature, can guarantee repeatability by maximum temperature being set and heating timer.If adopt the Hot-blast Heating mode, hot nozzle should heat from the top, and the hot nozzle size should be less than or equal to the mold of device.Generally not from the device bottom-heated, because can cause peeling off like this damage, and the adjacent devices part is flowed again.If the device of pulling down is bad already, just need not consider temperature of fusion and time, if the device of pulling down is also prepared use again, before heating and dismounting, add some liquid soldering fluxes and can make homogeneous heating below device.For avoiding the damage of plank or other device, control it with being careful and add heat, heating direction and hot blast spill-out etc.
Remove and the key problem of welding original paper is whether the welding contact point of components and parts requires according to set Temperature Setting the process that heats, how to go controlling this process the most important, we analyze the control procedure of heating and will find, the key that real impact adds heat control is whether the data of measuring are temperature of real element.Core that Here it is, if the measuring system of a control system is unstable or be not the temperature that really needs, the better control algolithm effect that also can not obtain wishing.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the object of the present invention is to provide the in good time temperature control system of a kind of BGA reclamation work station multipoint temperature measuring.
To achieve these goals, the technical solution used in the present invention is:
The in good time temperature control system of BGA reclamation work station multipoint temperature measuring, comprise K type thermocouple temperature sensor, the direct connecting sensor of module and directly carry out data-switching and calculate the temperature control modules of output, the hot air heating system of control able to programme, the conversion accuracy of the module that described temperature control modules is selected is 16, can be accurate to 0.1 ℃, be 500ms switching time; Described temperature control modules unit uses the PD with two degree of freedom to control, and improves simultaneously disturbance and target response; Described temperature control modules temperature control unit is furnished with automatic regulating function (AT); Described temperature control modules possesses the short detection of burning of well heater; The hot air heating system heater element of described control able to programme adopts the wind pipe type combination.
Described K type thermopair directly contacts with measurand, is not subjected to the impact of intermediate medium.
Temperature control modules adopts the direct connecting sensor of module, and module is directly carried out data-switching and calculated output, to guarantee analog-to-digital precision and speed, the precision of the arithmetic speed of module and numeral output.
Temperature control modules adopts the PD of two degree of freedom to control, and improves simultaneously disturbance and target response.If focus on disturbance response (namely reduce P and I, increase D) vibration and the overshoot are occurred to the response of time voltage to solve; If emphatically to the response (namely increase P and I, reduce D) of time voltage, to the response of disturbance with the problem that postpones.
Described temperature control modules installs the situation that current transformer (CT) detects well heater to each heating group, has guaranteed the true temperature of required heating part, has improved again the one-time success rate of reprocessing, and reduces PCB added heat damage repeatedly.
The hot air heating system heater element of described control able to programme adopts the wind pipe type combination, and with " mass airflow meter ", accurately airflow regulation amount is controlled in the heating of system, and can use by inflated with nitrogen, carries out the reclamation work of lead-free PCB.
Description of drawings
Accompanying drawing is apparatus of the present invention work schematic diagram.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further details.
As shown in the figure, the in good time temperature control system of BGA reclamation work station multipoint temperature measuring, comprise K type thermocouple temperature sensor, the direct connecting sensor of module and directly carry out data-switching and calculate the temperature control modules of output, the hot air heating system of control able to programme, the conversion accuracy of the module that described temperature control modules is selected is 16, can be accurate to 0.1 ℃, be 500ms switching time; Described temperature control modules unit uses the PD with two degree of freedom to control, and improves simultaneously disturbance and target response; Described temperature control modules temperature control unit is furnished with automatic regulating function (AT); Described temperature control modules possesses the short detection of burning of well heater; The hot air heating system heater element of described control able to programme adopts the wind pipe type combination.
Described K type thermopair directly contacts with measurand, is not subjected to the impact of intermediate medium.
Temperature control modules adopts the direct connecting sensor of module, and module is directly carried out data-switching and calculated output, to guarantee analog-to-digital precision and speed, the precision of the arithmetic speed of module and numeral output.
Temperature control modules adopts the PD of two degree of freedom to control, and improves simultaneously disturbance and target response.If focus on disturbance response (namely reduce P and I, increase D) vibration and the overshoot are occurred to the response of time voltage to solve; If emphatically to the response (namely increase P and I, reduce D) of time voltage, to the response of disturbance with the problem that postpones.
Described temperature control modules installs the situation that current transformer (CT) detects well heater to each heating group, has guaranteed the true temperature of required heating part, has improved again the one-time success rate of reprocessing, and reduces PCB added heat damage repeatedly.
The hot air heating system heater element of described control able to programme adopts the wind pipe type combination, and with " mass airflow meter ", accurately airflow regulation amount is controlled in the heating of system, and can use by inflated with nitrogen, carries out the reclamation work of lead-free PCB.
The course of work of BGA reclamation work of the present invention station multipoint temperature measuring temperature control system is to adopt K type thermopair directly to contact with measurand, measuring accuracy is high, thermal response time is fast, measurement range is large, temperature control modules adopts the direct connecting sensor of module, directly thermocouple measuring temperature is carried out data-switching and calculate output, if temperature does not reach setting value, continue to carry out heating process, until reach setting value, if reached setting value, holding temperature state.The welding of element and the heating system of dismounting possess the hot air flow control system, due to the solder joint of BGA all be designed into element below, the hot blast mode can around below element, avoid damaging the possibility of components and parts fully.And adopt " mass airflow meter " that the heating of system is controlled.Heater element adopts the wind pipe type combination, this design can be in good time airflow regulation amount accurately, and can use by inflated with nitrogen, carry out the reclamation work of lead-free PCB.
Above introduction only be based on preferred embodiment of the present invention, can not limit scope of the present invention with this.Any replacement, combination, discrete of the present invention being made parts well know in the art, and to the invention process step do well know in the art be equal to change or replace all do not exceed protection scope of the present invention.
Claims (3)
1.BGA the in good time temperature control system of reclamation work station multipoint temperature measuring, comprise K type thermocouple temperature sensor, the direct connecting sensor of module and directly carry out data-switching and calculate the temperature control modules of output, the hot air heating system of control able to programme, it is characterized in that: the conversion accuracy of the module that described temperature control modules is selected is 16, can be accurate to 0.1 ℃, be 500ms switching time; Described temperature control modules unit uses the PD with two degree of freedom to control, and improves simultaneously disturbance and target response; Described temperature control modules temperature control unit is furnished with automatic regulating function; Described temperature control modules possesses the short detection of burning of well heater; The hot air heating system heater element of described control able to programme adopts the wind pipe type combination.
2. a kind of BGA reclamation work according to claim 1 station multipoint temperature measuring temperature control system, it is characterized in that: described K type thermopair directly contacts with measurand, is not subjected to the impact of intermediate medium.
3. a kind of BGA reclamation work according to claim 1 station multipoint temperature measuring temperature control system, it is characterized in that: temperature control modules adopts the direct connecting sensor of module, module is directly carried out data-switching and is calculated output, to guarantee analog-to-digital precision and speed, the precision of the arithmetic speed of module and numeral output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110360741 CN103105877A (en) | 2011-11-15 | 2011-11-15 | BGA repair workstation multi-point temperature measurement temperature-control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110360741 CN103105877A (en) | 2011-11-15 | 2011-11-15 | BGA repair workstation multi-point temperature measurement temperature-control system |
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| CN103105877A true CN103105877A (en) | 2013-05-15 |
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| CN 201110360741 Pending CN103105877A (en) | 2011-11-15 | 2011-11-15 | BGA repair workstation multi-point temperature measurement temperature-control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109128420A (en) * | 2018-08-29 | 2019-01-04 | 西安中科麦特电子技术设备有限公司 | It is a kind of automatically to reprocess sealing-off method |
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2011
- 2011-11-15 CN CN 201110360741 patent/CN103105877A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109128420A (en) * | 2018-08-29 | 2019-01-04 | 西安中科麦特电子技术设备有限公司 | It is a kind of automatically to reprocess sealing-off method |
| CN109128420B (en) * | 2018-08-29 | 2021-03-02 | 西安中科麦特电子技术设备有限公司 | Full-automatic repair and unsolder method |
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Application publication date: 20130515 |