CN101187599A - Pressure test device - Google Patents
Pressure test device Download PDFInfo
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- CN101187599A CN101187599A CNA2007100940021A CN200710094002A CN101187599A CN 101187599 A CN101187599 A CN 101187599A CN A2007100940021 A CNA2007100940021 A CN A2007100940021A CN 200710094002 A CN200710094002 A CN 200710094002A CN 101187599 A CN101187599 A CN 101187599A
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Abstract
The invention relates to a pressure testing device, which is used for reliability testing of structure compressive resistance of an electronic product, which comprises a down-press mechanism, a control system and a test bench. The invention also discloses a method for measuring accurate and controlling actual pressure which presses on a test sample, the method comprises returning signal which is produced by a pressure sensor after being pressed to the control system, controlling the whole testing process through a PLC program which is compiled, accurately measuring and controlling the actual pressure which presses on the test sample, and displaying the whole pressing process by utilizing curve line. The method not only increases accuracy and efficiency of the test, but also is in accordance with a requirement that the test which is regulated by ISO/IEC 17027-2006 which is made by CNAS must achieve magnitude source. Consistency of the magnitude source is a premise condition of the test result which is accepted in world, the Chinese Qualified Evaluation Country (English abbreviation: CNAS) views magnitude source as the base of the credibility of a test result.
Description
[technical field]
The present invention relates to a kind of pressure test device, be used for the structure compressive resistance reliability testing of electronic product.
[background technology]
The scope of using along with electronic product is more and more wider, and the consumer is also more and more higher to the quality requirements of electronic product.The structure compressive resistance reliability of electronic product is as a major criterion weighing quality, especially valued by each production firm and research and development institution, and the Ministry of Information industry exists especially: stipulated clearly among the 3.2.2 of the communication industry standard YD/T1539-2006 of the People's Republic of China (PRC) " the GSM CDMA reliability engineering requires and method of testing " and the 4.2.2 that mobile phone should bear (250 ± 10) N power extruding 1000 times.
The equipment of finishing this test use in the past can only simply be finished the action of extruding, but can't measure accurately for the actual pressure that is subjected to of specimen, let alone control applied pressure size, so the False Rate of test is very high, and because the dynamics of test can not accurately be measured, quality dispute usually takes place thus.Therefore, the people in the industry wishes that always more advanced proving installation and method of testing are arranged, to improve test accuracy and efficient.
[summary of the invention]
Technical scheme of the present invention provides a kind of device of testing electronic product structure compressive resistance reliability.
Technical scheme of the present invention has also disclosed a kind ofly can accurately measure and control the method that is applied to actual pressure on the specimen and the application of force process of pressure is come out with curve display.
For realizing above technical scheme, the invention provides a kind of device of testing electronic product structure compressive resistance, comprising: mechanism for testing and control system.Described mechanism for testing, it comprises the Pneumatic assembly that is used to push specimen, is used for the fixed mechanism of fixing Pneumatic assembly, is used to place the testing stand of specimen; The Pneumatic assembly testing element and the air volume regulating valve that comprise cylinder, link with cylinder piston wherein.Described air volume regulating valve is connected to the two ends up and down of cylinder, is used for regulating the compressed-air actuated flow of lower cylinder body on the cylinder piston, thereby can regulates the speed that cylinder piston moves up and down.Described control system and mechanism for testing are electrically connected can be controlled Pneumatic assembly and test according to the program of setting.As accompanying drawing 2.
The testing element that described and cylinder piston link is installed together with removably by pressure transducer and pressure test head to be formed and links together with cylinder piston, can be according to the pressure test head of different test requests replacing different materials.In addition, described testing stand be installed in cylinder under and be fixed on the fixed head with removably, can change the testing stand of different materials according to different test requests, as accompanying drawing 5,6.
Described control system comprises that being used to control Pneumatic assembly tests and can receive the output simulating signal of pressure transducer and be converted into PLC (the Programmable Logic Controller) Programmable Logic Controller of digital signal and the solenoid valve that can the control cylinder piston moves up and down, and is used for operating The whole control system and shows HMI (the Human Machine Interface) touch-screen of all test datas.
Technical scheme of the present invention has also disclosed a kind ofly can accurately measure and control the method that is applied to actual pressure on the specimen and the application of force process of pressure is come out with curve display, and its step comprises:
1) sets test parameter;
2) start test procedure;
3) the pressure test head moves down, and touches specimen gradually;
4) whether the judgement sample pressure reaches setting value, and decision is to continue (3) step or carry out next step according to judged result;
5) the pressure test head stops to move, and the pressure that keeps setting is on specimen;
6) judge whether the time that pressure keeps reach setting value, decision is to continue (5) step or carry out next step according to judged result;
7) move on the pressure test head, and finally leave specimen;
8) judge whether testing time reaches setting value, decision is to stop testing or return (3) step to carry out new round circulation according to judged result;
9) write down all test datas;
10) show by HMI (Human Machine Interface) the touch-screen pressure curve that specimen in the test process is suffered.
The procedure for displaying of the curve map in the step (10) is: pressure transducer is connected with the pressure test head, its reaction force acts and sensor when the pressure test head contacts generation pressure with sample, sensor just has the analog electrical signal conversion to produce the analog interface that is delivered to PLC by signal wire, be digital signal is transferred to HMI by data line CPU by PLC with electrical signal conversion again, the size that the CPU of HMI is translated into power again shows, because each scan period of PLC will be exported the force signal that is subjected to that a sensor transmits, and the scan period of PLC is about 10ms, so signal and time that the CPU of HMI gathers concern with regard to formation function, the respective function curve map of exerting oneself with the time can be shown, as accompanying drawing 3 on the screen of HMI.
[description of drawings]
Fig. 1 is the process flow diagram of program run of the present invention.
Fig. 2 is a system schematic of the present invention.
Fig. 3 is the curve map of the pressure that shows on the touch-screen.
Fig. 4 is the present device stereographic map.
Fig. 5, the 6th, the different test forms that present device is changed according to different test requests.
[embodiment]
Below the concrete process main reference accompanying drawing of implementing 1,2.Specimen is placed on the specimen mounting table, sets the pressure size on HMI (Human Machine Interface) touch-screen, time, testing time (as accompanying drawing 3) that this pressure keeps are clicked the start key test again and are promptly begun on HMI.
PLC is after the enabled instruction of accepting, enter running state of programs (as the flow process of accompanying drawing 1), this moment, solenoid valve 1 was opened, and pressurized air enters cylinder, piston since up and down the draught head of cylinder move downward, enter step (3) thus drive connected testing element motion.The pressure test head moves down, and touch specimen gradually, the detected force value of pressure transducer is transferred to control system, and control system is judged this force value: then do not proceed step (3) pressure test head and continue to move down up to reaching setting value if reach set pressure.PLC just closes solenoid valve 1 and 2 simultaneously when reaching setting value, and the constant piston of air pressure is with regard to stop motion up and down for cylinder, and the pressure test head acts on trying hard to keep on the specimen and holds constant.This moment, control system picked up counting, and when time of being write down arrives setting-up time and enters step (7), solenoid valve 2 is opened, and the air pressure below the cylinder piston is greater than top, and piston moves up and drives the pressure test head and leave specimen.By the time after the pressure test head left specimen fully, testing time of control system record carried out the judgement of step (8) simultaneously, then tested and stopped if testing time reaches setting value, if number of times does not reach and then returns step (3) and enter in the next round test.
Explanation can produce pressure as shown in Figure 2 when the pressure test head touches specimen in addition, and this pressure is delivered on the pressure transducer, and sensor will be exported analog electrical signal is transferred to PLC by line analog signal interface.PLC is converted into digital signal with simulating signal, is transferred among the CPU of HMI by data line again.The CPU of HMI shows the corresponding for it force value of digital signal conversion of gathering.Since the scan period output one-off pattern analog signal of PLC, and the scan period of PLC only has about 10ms, so whole pressure applies process and all can go on record, forms the graphic presentation of curve.
Claims (8)
1. a pressure test device is used for the structure compressive resistance reliability testing of electronic product, comprising: mechanism for testing and control system.This device is characterised in that: described mechanism for testing, and it comprises the Pneumatic assembly that is used to push specimen, is used for the fixed mechanism of fixing Pneumatic assembly, is used to place the testing stand of specimen; The Pneumatic assembly testing element and the air volume regulating valve that comprise cylinder, link with cylinder piston wherein.Described control system and mechanism for testing are electrically connected can be controlled Pneumatic assembly and test according to the program of setting.
2. pressure test device as claimed in claim 1, it is characterized in that: the testing element that described and cylinder piston link is installed together with removably by pressure transducer and pressure test head to be formed and links together with cylinder piston, can be according to the pressure test head of different test requests replacing different materials.
3. pressure test device as claimed in claim 1 is characterized in that: described air volume regulating valve is connected to the two ends up and down of cylinder, is used for regulating the compressed-air actuated flow of lower cylinder body on the cylinder piston.
4. pressure test device as claimed in claim 1 is characterized in that: described fixed mechanism comprises fixed head, is placed in the fixed support on the fixed head and is installed in the nethermost control system install bin of device, as accompanying drawing 5.
5. pressure test device as claimed in claim 1 is characterized in that: described testing stand be installed in cylinder under and be fixed on the fixed head with removably, can change the testing stand of different materials according to different test requests.
6. pressure test device as claimed in claim 1, it is characterized in that: described control system comprises that being used to control Pneumatic assembly tests and can receive the output simulating signal of pressure transducer and be converted into PLC (the Programmable Logic Controller) Programmable Logic Controller of digital signal and the solenoid valve that can the control cylinder piston moves up and down, and is used for operating The whole control system and shows HMI (the Human Machine Interface) touch-screen of all test datas.
7. HMI as claimed in claim 6 (Human Machine Interface) touch-screen, its feature also is: carry out communication and be connected with PLC (Programmable Logic Controller) Programmable Logic Controller by data line, can show the velo curves of the whole loading process of specimen.
8. the present invention has also disclosed a kind of can accurately measure and control is applied to actual pressure on the specimen, and the method that shows of the line chart of this pressure firmly can being write music, and its step comprises:
1) sets test parameter;
2) start test procedure;
3) the pressure test head moves down, and touches specimen gradually;
4) whether the judgement sample pressure reaches setting value, and decision is to continue (3) step or carry out next step according to judged result;
5) the pressure test head stops to move, and the pressure that keeps setting is on specimen;
6) judge whether the time that pressure keeps reach setting value, decision is to continue (5) step or carry out next step according to judged result;
7) move on the pressure test head, and finally leave specimen;
8) judge whether testing time reaches setting value, decision is to stop testing or return (3) step to carry out new round circulation according to judged result;
9) write down all test datas;
10) show by HMI (Human Machine Interface) the touch-screen pressure curve that specimen in the test process is suffered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100940021A CN101187599A (en) | 2007-08-06 | 2007-08-06 | Pressure test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100940021A CN101187599A (en) | 2007-08-06 | 2007-08-06 | Pressure test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101187599A true CN101187599A (en) | 2008-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100940021A Pending CN101187599A (en) | 2007-08-06 | 2007-08-06 | Pressure test device |
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| Country | Link |
|---|---|
| CN (1) | CN101187599A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102189393A (en) * | 2010-03-02 | 2011-09-21 | 张志嵩 | Pressfit method and equipment capable of measuring interference force |
| CN102768125A (en) * | 2012-07-27 | 2012-11-07 | 昆山洺九机电有限公司 | Pressure tester with intelligent sensing function |
| CN103196683A (en) * | 2012-09-17 | 2013-07-10 | 深圳出入境检验检疫局玩具检测技术中心 | Toy automatic force application tester and test method thereof |
| CN106017785A (en) * | 2016-05-18 | 2016-10-12 | 深圳市华星光电技术有限公司 | Testing machine |
| CN106525410A (en) * | 2016-12-23 | 2017-03-22 | 纳恩博（天津）科技有限公司 | Pressure testing device |
| CN107228758A (en) * | 2017-05-27 | 2017-10-03 | 重庆腾毅兴精密电子有限公司 | A kind of USB data line method of testing |
-
2007
- 2007-08-06 CN CNA2007100940021A patent/CN101187599A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102189393A (en) * | 2010-03-02 | 2011-09-21 | 张志嵩 | Pressfit method and equipment capable of measuring interference force |
| CN102768125A (en) * | 2012-07-27 | 2012-11-07 | 昆山洺九机电有限公司 | Pressure tester with intelligent sensing function |
| CN103196683A (en) * | 2012-09-17 | 2013-07-10 | 深圳出入境检验检疫局玩具检测技术中心 | Toy automatic force application tester and test method thereof |
| CN103196683B (en) * | 2012-09-17 | 2017-05-03 | 深圳出入境检验检疫局玩具检测技术中心 | Toy automatic force application tester and test method thereof |
| CN106017785A (en) * | 2016-05-18 | 2016-10-12 | 深圳市华星光电技术有限公司 | Testing machine |
| CN106525410A (en) * | 2016-12-23 | 2017-03-22 | 纳恩博（天津）科技有限公司 | Pressure testing device |
| CN107228758A (en) * | 2017-05-27 | 2017-10-03 | 重庆腾毅兴精密电子有限公司 | A kind of USB data line method of testing |
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