CN109406069B - Testing system and method for testing waterproof products - Google Patents
Testing system and method for testing waterproof products Download PDFInfo
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- CN109406069B CN109406069B CN201811613706.XA CN201811613706A CN109406069B CN 109406069 B CN109406069 B CN 109406069B CN 201811613706 A CN201811613706 A CN 201811613706A CN 109406069 B CN109406069 B CN 109406069B
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- 238000012360 testing method Methods 0.000 title claims abstract description 140
- 238000000034 method Methods 0.000 title description 6
- 230000007246 mechanism Effects 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000000284 extract Substances 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 239000012528 membrane Substances 0.000 abstract description 17
- 238000010998 test method Methods 0.000 abstract description 4
- 230000001105 regulatory effect Effects 0.000 description 8
- 238000004891 communication Methods 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 4
- 238000000605 extraction Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
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Abstract
本发明公开了一种用于测试防水产品的测试系统及测试方法，所述测试系统包括测试夹具、滴水控制器、防水测试仪和测试计算机，所述测试夹具与防水测试仪连接，测试夹具和防水测试仪分别与测试计算机连接，滴水控制器装载在测试夹具上，所述测试夹具还包括气动控制机构。通过在产品面盖的受音孔处滴入水滴，封堵防水透气膜外部受音孔空间，既避免该产品在抽取内部气压进行防水测试时，外部空气从受音孔位置通过防水透气膜进入至产品内部，又能有效监测贴装在产品内部的防水透气膜是否良好，以及是否能有效防止水分子进入产品内部。
The present invention discloses a test system and a test method for testing waterproof products, wherein the test system comprises a test fixture, a water dripping controller, a waterproof tester and a test computer, wherein the test fixture is connected to the waterproof tester, the test fixture and the waterproof tester are respectively connected to the test computer, the water dripping controller is mounted on the test fixture, and the test fixture further comprises a pneumatic control mechanism. By dripping water drops into the sound receiving hole of the product cover, the sound receiving hole space outside the waterproof breathable membrane is blocked, which can not only prevent the external air from entering the product from the sound receiving hole position through the waterproof breathable membrane when the internal air pressure is extracted for waterproof testing, but also effectively monitor whether the waterproof breathable membrane mounted inside the product is in good condition and whether it can effectively prevent water molecules from entering the product.
Description
Technical Field
The invention relates to the technical field of waterproof testing, in particular to a testing system and a testing method for testing waterproof products.
Background
The waterproof performance is one of the important characteristics that all waterproof products must possess, and industry is directed against waterproof protection design of waterproof product built-in microphone, widely adopts the position between the sound receiving hole of product and microphone to paste the waterproof ventilated membrane, reaches outside pronunciation and can pass through the air medium and pierce through the inside microphone sound receiving wall of carrying of product, and isolated liquid molecule gets into inside the machine from the sound receiving hole simultaneously, avoids functional failure such as microphone function failure. As shown in fig. 1, the waterproof product comprises a product surface cover 1', a product surface shell 2', a waterproof and breathable film 3' and a microphone 4' which are stacked from top to bottom, and a sound receiving hole 5' is formed in the product surface cover 1' at a position corresponding to the microphone 4 '.
Because waterproof ventilated membrane 3 'and microphone 4' are independent body material, after the inside contact equipment of product, can't reach high accuracy seal completely between waterproof ventilated membrane 3' and the sound receiving wall of microphone 4', lead to the current middle-high end waterproof product in industry when manufacturing, waterproof test's pass rate is lower, need maintenance quantity proportion can reach 20%. In the waterproof product, a certain mainstream digital terminal interphone is taken as an example, the existing waterproof test process flow is shown in fig. 2, the product passes through the unqualified product of a waterproof test instrument, the air leakage position is checked by manually blowing air and soaking water, whether the product is unqualified or not is determined again according to whether the air leakage is caused by the position of a sound receiving hole 5 'outside a waterproof air-permeable membrane 3', in the manual determination process, the influence of personnel skills exists in the probability erroneous determination, the waterproof performance quality accident of the product occurs, and customer complaints are caused.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides a test system and a test method for testing waterproof products efficiently, which adopt the purposes of dripping water from the outside of the waterproof products to the positions of sound receiving holes, sealing the sound receiving Kong Dadao to block the waterproof breathable film, then performing waterproof performance test operation of the products, effectively avoiding leakage of outside air into the products caused by gaps between the sound receiving walls of microphones in the products and the waterproof breathable film, greatly reducing unqualified products to be subjected to re-judgment after one-time testing of a test instrument, efficiently screening out test good products and unqualified products, reducing manual re-judgment operation and saving manpower.
The technical effect to be achieved by the invention is realized by the following scheme that the test system for testing the waterproof product comprises a test fixture, a dripping controller, a waterproof tester and a test computer, wherein the test fixture is connected with the waterproof tester, the test fixture and the waterproof tester are respectively connected with the test computer, the dripping controller is loaded on the test fixture, and the test fixture further comprises a pneumatic control mechanism.
Preferably, the test fixture comprises a box for carrying the pneumatic control mechanism and the drip controller.
Preferably, the test fixture further comprises a first plate, a second plate and a third plate which are sequentially arranged from bottom to top, wherein the first plate, the second plate and the third plate are coaxially connected through connecting pieces, and the second plate and the third plate are controlled to move up and down by a pneumatic control mechanism.
Preferably, the first plate is fixed on the upper end face of the box body, and the upper end face of the first plate is used for bearing and fixing the waterproof product to be tested.
Preferably, the water dripping controller comprises a clean water bearing cylinder and a water dripping control valve, wherein a water dripping needle head is arranged at the lower end of the water dripping control valve, penetrates through the third plate and the second plate and is aligned with a sound receiving hole of a product to be detected.
Preferably, an elastic member is provided between the second plate and the third plate.
Preferably, the test fixture further comprises two switch buttons.
A test method of the test system for testing waterproof products as described above, comprising the steps of:
s1, loading a product to be tested to a test fixture and starting a test;
s2, dripping water to a sound receiving hole of a product to be detected by the water dripping controller, and plugging the sound receiving hole;
s3, extracting the internal air pressure of the product by the waterproof tester;
s4, maintaining negative pressure balance in the product by the waterproof tester;
and S5, testing the negative pressure value of product leakage by the waterproof tester.
Preferably, the loading the product to be tested into the test fixture in step S1 specifically includes loading the product to be tested on the first plate, controlling the second plate to descend to press against the product to be tested by the pneumatic control mechanism, and then controlling the third plate to descend together with the drip control valve by the pneumatic control mechanism.
Preferably, after the sound receiving hole is plugged in the step S2, the method further includes a step of controlling the third plate to rise by the pneumatic control mechanism to drive the dripping control valve to rise.
The invention has the following advantages:
Through dripping the water droplet in the sound receiving hole department of product face lid, the outside sound receiving hole space of shutoff waterproof ventilated membrane both avoids this product when extracting inside atmospheric pressure and carries out waterproof test, and outside air gets into inside the product from the sound receiving hole position through waterproof ventilated membrane, can effectively monitor again and paste whether the waterproof ventilated membrane of dress inside the product is good to and whether can effectively prevent that the hydrone from getting into inside the product.
Drawings
Fig. 1 is a schematic view of a partial structure of a waterproof product;
FIG. 2 is a flow chart of a prior art process for testing waterproof products;
Fig. 3 is a schematic plan view of a test system for testing waterproof products according to the present invention;
FIG. 4 is a schematic top view of FIG. 3;
Fig. 5 is a schematic perspective view of a testing system for testing waterproof products according to the present invention;
FIG. 6 is a schematic perspective view of a test fixture and a drip controller according to the present invention;
FIG. 7 is a schematic plan view of a test fixture and a drip controller according to the present invention;
fig. 8 is a flow chart of a testing method for testing a waterproof product in the present invention.
Detailed Description
The present invention is described in detail below with reference to the drawings and the embodiments, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", or a third "may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," "disposed," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected via an intermediate medium, or in communication between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Example 1
The first embodiment of the invention provides a test system for testing waterproof products, which is mainly used for testing the waterproof performance of waterproof products with waterproof breathable films arranged therein. Specifically, the waterproof product can be a communication device, such as an interphone, a telephone and the like, a microphone is arranged in the communication device, a sound receiving hole is further formed in the communication device, and external voice penetrates through an air medium to the sound receiving wall of the microphone to realize voice transmission of the communication device. Because the inside and the outside intercommunication of product are passed through to the hole of receiving, consequently usually in order to make the product reach waterproof purpose, can set up waterproof ventilated membrane between hole of receiving and microphone, this waterproof ventilated membrane both can realize that outside pronunciation crosses the air medium and pierces to the inside microphone and receive the sound wall of carrying of product, can also isolate liquid molecule from receiving the hole site and get into inside the product simultaneously, effectively avoid functional failure such as microphone function failure.
Because waterproof ventilated membrane and microphone are independent body material, after the inside contact equipment of product, can't reach high accuracy sealedly completely between waterproof ventilated membrane and the microphone sound receiving wall, its waterproof test passing rate is lower, the test system that the embodiment of the invention provided through dropping into water droplet in the sound receiving hole department of product face lid, shutoff waterproof ventilated membrane outside sound receiving hole space, both avoided this product to take out inside atmospheric pressure when carrying out waterproof test, outside air from the sound receiving hole position and get into inside the product through waterproof ventilated membrane, can effectively monitor again whether the waterproof ventilated membrane of dress inside the product is good, and whether can effectively prevent that the hydrone from getting into inside the product.
As shown in fig. 3 to 7, the test system includes a test jig 100, a drip controller 200, a waterproof tester 300, and a test computer 400, the test jig 100 is connected to the waterproof tester 300, the test jig 100 and the waterproof tester 300 are respectively connected to the test computer 400, the drip controller 200 is loaded on the test jig 100, and the test jig 100 further includes a pneumatic control mechanism 110.
The test fixture 100 integrates product loading, pneumatic control, drip control and waterproof tester 300 start signal control test software data acquisition control, one-key start, and full automatic operation. Specifically, the test fixture 100 includes a box 120, where the box 120 is used to carry the pneumatic control mechanism 110 and the drip controller 200, and a PLC control circuit board may be loaded in the box 120. The test fixture 100 further comprises a first plate 130, a second plate 140 and a third plate 150, which are sequentially arranged from bottom to top, wherein the first plate 130, the second plate 140 and the third plate 150 are coaxially connected through a connecting piece 160, and the second plate 140 and the third plate 150 are controlled to move up and down by the pneumatic control mechanism 110. The first plate 130 is fixed on the upper end surface of the box 120, and the upper end surface of the first plate 130 is used for bearing and fixing the waterproof product to be tested.
The drip controller 200 includes a clean water carrying cylinder 210 and a drip control valve 220, a drip needle 221 is disposed at the lower end of the drip control valve 220, the drip needle 221 passes through the third plate 150 and the second plate 140 and is aligned with a sound receiving hole of a product to be tested, so as to control the drip position and the drip amount. Specifically, clean water is disposed in the clean water bearing cylinder 210, and is connected to the drip control valve 220 through a pipeline, and the drip control valve 220 accurately controls the water yield to realize accurate dripping.
The test fixture 100 further includes two switch buttons 170, and the switch buttons 170 are preferably disposed on two sides of the case 120, and must be pressed simultaneously to be activated, so as to avoid one-hand activation. After the switch button 170 is started, the pneumatic control mechanism 110 controls the second plate 140 to descend until the second plate 140 is pressed against the product to be tested to prevent the product from shaking, preferably, the lower end surface of the second plate 140 is provided with a profiling product upper surface structure, then the pneumatic control mechanism 110 controls the third plate 150 to descend together with the dripping control valve 220, an elastic piece 180 is arranged between the second plate 140 and the third plate 150, the compression amount of the descending stroke control elastic piece 180 is controlled by the pneumatic control mechanism 110, so that the depth of the dripping needle 221 of the dripping control valve 220 extending into a sound receiving hole of the product to be tested is reached, dripping control is performed, a waterproof breathable film is blocked to contact with the external air of the product, after dripping is completed, the pneumatic control mechanism 110 controls the third plate 150 to ascend to drive the dripping control valve 220 to ascend (at the moment, the second plate 140 keeps pressing the product state), finally, the waterproof tester 300 starts to test, and after the test is completed, test data is output to the test computer 400 and display is output.
The pneumatic control mechanism 110 further includes an air outlet tube 111 and an air inlet tube 112.
The connecting members 160 between the first plate 130, the second plate 140 and the third plate 150 may be four bars, which are symmetrically formed at four corners of the plates, respectively, one end of each bar may be fixedly connected with the first plate 130, and the second plate 140 and the third plate 150 may move up and down with respect to the bars. The elastic members 180 between the second plate 140 and the third plate 150 may be springs arranged on supporting sliding rods between the second plate 140 and the third plate 150, and the number of the elastic members 180 may be four and symmetrically arranged between the second plate 140 and the third plate 150.
The waterproof tester 300 in the embodiment of the invention can be a full-automatic digital tester, namely a FL-296B model waterproof tester of Instrument and meter limited company of Ganshan (Tianjin), and can acquire a starting signal through the test fixture 100, so as to automatically extract the internal air pressure of a product, balance and measure the air pressure value, and transmit test data to computer test software and a storage system to realize waterproof performance test.
In the embodiment of the invention, the test computer 400 is in communication connection with the test fixture 100 and the waterproof tester 300, compares and judges the test data of the waterproof tester 300 through special waterproof test software, outputs the test Pass or Fail result, and uploads and records the test Pass or Fail result to the storage server.
The test system of the embodiment of the invention can be used for carrying out IP67 level and IP68 level waterproof tests aiming at the waterproof electronic product with a combined structure and sealed type, and under the condition of good compressed air input and 220V alternating current power input, and takes interphones as an example, the related parameters are as follows:
The IP67 level waterproof test parameters comprise a power supply of AC 220V 2KW, a compressed air input of-15 Kpa (which can be regulated by a device pressure regulating valve), a water dripping time of 1s, a water dripping amount of 0.01ml, a delay time of 1s, an air extraction time of 7s, a balance time of 5s, a test leakage value time of 5s, an exhaust time of 1s and a leakage judgment standard value range of-120 Pa.
The IP 68-level waterproof test parameters comprise a power supply, an AC 220V 2KW power supply, a compressed air input of-30 Kpa (which can be regulated by a device pressure regulating valve), a dripping time of 1s, a dripping amount of 0.01ml, a delay time of 1s, an air extraction time of 10s, a balance time of 25s, a test leakage value time of 15s, an exhaust time of 5s and a leakage judgment standard value range of-90 Pa.
According to the embodiment of the invention, the marine energy PD7 series interphone is taken as an example, after the waterproof performance of the product in the production process is tested by adopting the test system, the one-time waterproof test yield is improved by 17.23%, and the waterproof test yield is as high as 97.55%, so that the test system of the embodiment of the invention can reduce the erroneous judgment of the product to be tested, improve the waterproof test efficiency of the product, prevent the erroneous judgment during manual repeated judgment, improve the product yield, avoid quality accidents or customer complaints, and also can save manpower and reduce the cost.
Example two
As shown in fig. 8, a second embodiment of the present invention provides a testing method for testing a waterproof product testing system according to the first embodiment, which includes the following steps:
Step S1, loading a product to be tested to a test fixture 100 and starting a test;
step S2, the drip controller 200 drips to a sound receiving hole of a product to be detected, and the sound receiving hole is plugged;
step S3, the waterproof tester 300 extracts the internal air pressure of the product;
step S4, the waterproof tester 300 keeps the negative pressure balance in the product;
step S5, the waterproof tester 300 tests the negative pressure value of product leakage.
The loading of the product to be tested into the test fixture 100 in step S1 specifically includes loading the product to be tested on the first plate 130 (which may be manually operated or mechanically and automatically operated), the pneumatic control mechanism 110 controls the second plate 140 to descend to press against the product to be tested, and then the pneumatic control mechanism 110 controls the third plate 150 to descend together with the drip control valve 220. After the sound receiving hole is plugged in step S2, the step further includes the step of controlling the third plate 150 to rise by the pneumatic control mechanism 110 to drive the drip control valve 220 to rise.
And detecting defective products in the step S3, the step S4 and the step S5.
The test method of the embodiment of the invention can be used for carrying out IP67 level and IP68 level waterproof tests aiming at the waterproof electronic product with the structure combination sealing type under the condition of good compressed air input and 220V alternating current power input, and takes interphones as an example, and related parameters are as follows:
The IP67 level waterproof test parameters comprise a power supply of AC 220V 2KW, a compressed air input of-15 Kpa (which can be regulated by a device pressure regulating valve), a water dripping time of 1s, a water dripping amount of 0.01ml, a delay time of 1s, an air extraction time of 7s, a balance time of 5s, a test leakage value time of 5s, an exhaust time of 1s and a leakage judgment standard value range of-120 Pa.
The IP 68-level waterproof test parameters comprise a power supply, an AC 220V 2KW power supply, a compressed air input of-30 Kpa (which can be regulated by a device pressure regulating valve), a dripping time of 1s, a dripping amount of 0.01ml, a delay time of 1s, an air extraction time of 10s, a balance time of 25s, a test leakage value time of 15s, an exhaust time of 5s and a leakage judgment standard value range of-90 Pa.
According to the embodiment of the invention, the marine energy PD7 series interphone is taken as an example, after the waterproof performance of the product in the production process is tested by adopting the testing method, the one-time waterproof testing yield is improved by 17.23%, and the waterproof testing yield is as high as 97.55%, so that the testing method of the embodiment of the invention can reduce the erroneous judgment of the product to be tested, improve the waterproof testing efficiency of the product, prevent the erroneous judgment during the manual repeated judgment, improve the product yield, avoid quality accidents or customer complaints, and also can save manpower and reduce the cost.
Finally, it should be noted that the foregoing embodiments are merely for illustrating the technical solution of the embodiments of the present invention and are not intended to limit the embodiments of the present invention, and although the embodiments of the present invention have been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the embodiments of the present invention may be modified or replaced with the same, and the modified or replaced technical solution may not deviate from the scope of the technical solution of the embodiments of the present invention.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112098305B (en) * | 2020-11-04 | 2021-02-09 | 天津博益气动股份有限公司 | Detection device and method for waterproof detection of waterproof breathable film |
| CN113125186B (en) * | 2021-04-25 | 2023-03-24 | 歌尔微电子股份有限公司 | Waterproof testing arrangement of waterproof module of electronic equipment |
| CN115046698A (en) * | 2021-10-12 | 2022-09-13 | 北京荣耀终端有限公司 | Air tightness detection method and air tightness detection system |
| CN117782439A (en) * | 2024-02-23 | 2024-03-29 | 潍柴动力股份有限公司 | Air tightness test method and test production line |
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| CN103674441A (en) * | 2012-09-14 | 2014-03-26 | 亚旭电脑股份有限公司 | Test fixture and test method |
| CN207487943U (en) * | 2017-09-30 | 2018-06-12 | 中山市光维智能科技有限公司 | The optical mirror slip of adjusting is facilitated to drip angle detecting device |
| CN209416621U (en) * | 2018-12-27 | 2019-09-20 | 深圳市海能达通信有限公司 | Test macro for testing water-proof product |
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| CN205102983U (en) * | 2015-10-29 | 2016-03-23 | 苏州创佳电子材料有限公司 | A waterproof testing arrangement for membrane |
| CN108362620B (en) * | 2018-01-17 | 2024-03-19 | 常州北埠电子技术有限公司 | Breathable film waterproof test method and device |
| CN108871675A (en) * | 2018-04-16 | 2018-11-23 | 广东小天才科技有限公司 | Method and device for detecting waterproof performance, waterproof electronic product and storage medium |
| CN108645575B (en) * | 2018-07-27 | 2020-09-22 | 歌尔股份有限公司 | A liquid leakage detection device and method |
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| CN102466551A (en) * | 2010-11-19 | 2012-05-23 | 亚旭电脑股份有限公司 | Waterproof testing device and method |
| CN103674441A (en) * | 2012-09-14 | 2014-03-26 | 亚旭电脑股份有限公司 | Test fixture and test method |
| CN207487943U (en) * | 2017-09-30 | 2018-06-12 | 中山市光维智能科技有限公司 | The optical mirror slip of adjusting is facilitated to drip angle detecting device |
| CN209416621U (en) * | 2018-12-27 | 2019-09-20 | 深圳市海能达通信有限公司 | Test macro for testing water-proof product |
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