CN111412853A - Testing method and testing device for filling degree of transparent colloid and application - Google Patents
Testing method and testing device for filling degree of transparent colloid and application Download PDFInfo
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- CN111412853A CN111412853A CN202010366888.6A CN202010366888A CN111412853A CN 111412853 A CN111412853 A CN 111412853A CN 202010366888 A CN202010366888 A CN 202010366888A CN 111412853 A CN111412853 A CN 111412853A
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- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/22—Measuring arrangements characterised by the use of optical techniques for measuring depth
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Abstract
The test method comprises the steps of firstly coating a non-transparent identification layer on a first surface of a transparent colloid solidified in a colloid cavity, wherein the identification layer at least covers the center of the first surface, then measuring the distance h1 between the identification layer and the bottom surface of the colloid cavity and the depth h2 of the colloid cavity, calculating the difference value △ h between h1 and h2, and finally judging whether the filling degree of the transparent colloid meets the requirement or not by judging the magnitude of △ h and a preset difference value.
Description
Technical Field
The disclosure belongs to the technical field of material testing, and particularly relates to a testing method, a testing device and application of the filling degree of a transparent colloid.
Background
The glue filling process is to drip, coat and fill the liquid colloid on the surface of the product or in the product, so as to play roles of sealing, fixing, water proofing and the like. However, most of liquid colloids are transparent, the filling degree of the glue filling is difficult to control in the glue filling process, and the size of the filling degree directly influences the sealing, fixing and waterproof effects of the product.
A heart rate sensor is a product that requires protection of internal electronic components by potting. However, the heart rate sensor on the market generally covers glass at the opening of the glue filling shell after glue filling, and has no specific requirement on the filling degree of the transparent glue in the glue filling process, but the filling degree of the transparent glue can directly influence the optical performance consistency of the heart rate sensor, and the appearance of the glue filling is inconsistent, so that the aesthetic feeling of the product is reduced.
Disclosure of Invention
An object of the embodiments of the present disclosure is to provide a method for testing a filling degree of a transparent colloid, so as to solve a problem that the filling degree of the transparent colloid is difficult to accurately measure.
According to a first aspect of the embodiments of the present disclosure, there is provided a method for testing a filling degree of a transparent colloid, including:
coating a non-transparent identification layer on a first surface of a transparent colloid cured in a colloid cavity, wherein the identification layer at least covers the center of the first surface;
measuring the distance h1 between the identification layer and the bottom surface of the colloid cavity and the depth h2 of the colloid cavity, and calculating the difference value △ h between h1 and h 2;
determining △ h if it is less than a predetermined difference;
△ h is less than the preset difference value, the filling degree of the transparent colloid is in accordance with the requirement, or △ h is more than the preset difference value, the filling degree of the transparent colloid is not in accordance with the requirement.
Optionally, before coating the non-transparent identification layer on the first surface of the cured transparent colloid in the colloid cavity, the method further comprises:
pouring the transparent colloid into the colloid cavity by adopting a glue pouring process;
and curing the transparent colloid in the colloid cavity.
Optionally, the glue filling pressure range of the glue filling process is 0.3-0.6MPa, and the glue filling temperature range is 20-45 ℃.
Optionally, the curing process includes a first stage curing and a second stage curing, the first stage curing adopts UV curing, the curing time range is 30-90s, the curing temperature range of the second stage curing is 100-150 ℃, and the curing time range is 15-60 min.
Optionally, the identification layer is a colored paint.
Optionally, the area of the identification layer is smaller than the area of the first surface.
Optionally, after the filling degree of the gelatin body meets the requirement or the filling degree of the transparent colloid does not meet the requirement, the method further comprises the following steps:
and removing the identification layer by using a solvent.
According to a second aspect of the embodiments of the present disclosure, there is provided a testing apparatus adopting the testing method of the first aspect, including:
the cavity is formed by opening one side of the cavity;
the transparent colloid is filled in the colloid cavity;
the identification layer is arranged on the first surface of the transparent colloid and at least covers the center of the first surface of the transparent colloid;
a measurement component configured to measure a distance h1 of the identification layer from the bottom surface of the colloid cavity and a height h2 of the colloid cavity.
Optionally, the method further comprises:
Optionally, the measurement assembly is a 3D microscope.
According to a third aspect of embodiments of the present disclosure, there is provided a use of the test method of the first aspect or the test apparatus of the second aspect in a heart rate sensor.
One technical effect of the disclosed embodiment is as follows:
the embodiment of the disclosure provides a method for testing the filling degree of a transparent colloid, which comprises the steps of coating a non-transparent identification layer on the first surface of the transparent colloid cured in a colloid cavity, wherein the identification layer at least covers the center of the first surface, measuring the distance h1 between the identification layer and the bottom surface of the colloid cavity and the depth h2 of the colloid cavity, calculating the difference value △ h between h1 and h2, and finally judging whether the filling degree of the transparent colloid meets the requirement by judging the △ h and the preset difference value.
Other features of the present disclosure and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a flowchart of a method for testing the filling degree of a transparent colloid according to an embodiment of the present disclosure;
fig. 2 is a testing apparatus adopting a method for testing the filling degree of a transparent colloid according to an embodiment of the present disclosure.
Wherein: 1-an electronic component; 2-a shell; 3-transparent colloid; 4-marking layer.
Detailed Description
Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Referring to fig. 1, an embodiment of the present disclosure provides a method for testing a filling degree of a transparent colloid, including:
s101, coating a non-transparent identification layer on a first surface of a transparent colloid cured in a colloid cavity, wherein the identification layer at least covers the center of the first surface;
s102, measuring the distance h1 between the identification layer and the bottom surface of the colloid cavity and the depth h2 of the colloid cavity, and calculating the difference value △ h between h1 and h 2;
s103, judging △ h whether the difference value is smaller than a preset difference value;
and S104, △ h is less than the preset difference value, and the filling degree of the transparent colloid meets the requirement, or △ h is greater than the preset difference value, and the filling degree of the transparent colloid does not meet the requirement.
Specifically, the first surface of the transparent colloid is a surface far away from the bottom surface of the colloid cavity, and the distance between the first surface and the bottom surface of the colloid cavity directly influences the filling degree of the transparent colloid. The closer the distance h1 between the identification layer and the bottom surface of the colloid cavity and the depth h2 of the colloid cavity are, the better the filling degree of the transparent colloid is, and the smaller the predetermined difference is. When the filling degree of the transparent colloid is too small or too large, the first surface of the transparent colloid is concave or convex, and the effects of sealing, fixing, water proofing and the like cannot be achieved due to the fact that the filling degree of the transparent colloid is too small or too large.
The testing method of the embodiment of the disclosure can directly adopt a measuring device to observe and test the filling height h1. of the transparent colloid, which is caused by the fact that the first surface of the transparent colloid may be concave or convex, by coating a non-transparent identification layer on the first surface of the transparent colloid, the identification layer is required to cover at least the center of the first surface, namely the center of the concave or convex, in order to more accurately measure h1, whether the filling height of the transparent colloid meets the requirement can be conveniently and quickly judged by comparing the difference △ h of the h1 and the h2 with the preset difference, whether the filling height of the transparent colloid meets the requirement can be conveniently and quickly judged, and the testing accuracy is high, if △ h is less than the preset difference, the filling height of the transparent colloid meets the preset requirement, and the size of the transparent colloid is not more than the preset limit, the filling size of the colloid is not more than the preset size of the colloid, and the specific size of the colloid is not more limited by the colloid, and the filling size of the colloid is not more specifically limited by the colloid, and the colloid is not more specifically limited by the size of the colloid, and the colloid.
Optionally, before coating the non-transparent identification layer on the first surface of the cured transparent colloid in the colloid cavity, the method further comprises:
pouring the transparent colloid into the colloid cavity by adopting a glue pouring process;
and curing the transparent colloid in the colloid cavity.
Specifically, when the filling degree of the transparent colloid is tested, the transparent colloid is already in a solid state, and the filling degree of the transparent colloid is completely fixed. Before the transparent colloid is in a solid state, glue pouring and curing processes are required, and the glue pouring and curing directly influence the filling degree of the transparent colloid. The consistency of the filling degree of the transparent colloid can be ensured by the stable operation of the glue filling and curing processes, and the accuracy and the testing efficiency of the filling degree test of the transparent colloid are improved.
Optionally, the glue filling pressure range of the glue filling process is 0.3-0.6MPa, and the glue filling temperature range is 20-45 ℃.
In a specific implementation mode, a glue filling device with the model number of AsymtekS2-900 is generally adopted in the glue filling process of the heart rate sensor, the moving speed range of a glue filling head of the glue filling device can reach 5-100mm/s, and quick glue filling can be realized. Moreover, the glue filling pressure is controlled to be 0.3-0.6MPa, and the glue filling temperature is controlled to be 20-45 ℃. If the glue pouring pressure is too low, the glue discharging speed is slow, so that the glue pouring efficiency is influenced, but if the glue pouring pressure is too high, on one hand, the electronic assembly of the equipment to be glue-poured is possibly damaged due to the fact that the electronic assembly is arranged at the glue pouring position of the equipment to be glue-poured; on the other hand, too large glue filling pressure may affect the fluidity of the glue, which is not favorable for smooth glue filling. And the cooperation of the glue filling temperature and the glue filling pressure can enable the transparent glue body to achieve a good glue filling state, and the glue filling efficiency of the glue filling process is improved.
Optionally, the curing process includes a first stage curing and a second stage curing, the first stage curing adopts UV curing, the curing time range is 30-90s, the curing temperature range of the second stage curing is 100-150 ℃, and the curing time range is 15-60 min.
In a specific implementation mode, the potting adhesive of the heart rate sensor generally adopts a rubber material with the model of panacol 1619, the rubber material needs to be quickly cured firstly to achieve good curing and forming effects, the rubber material can be quickly cured and formed by UV curing within 30-90s, and the curing operation is convenient and quick. In order to further stabilize the curing effect, the second stage curing is required, and then the curing temperature of the second stage curing is critical. The curing temperature not only affects the curing speed of the colloid, but also affects the curing degree of the colloid. If the curing temperature is too low, the curing speed of the colloid is slow, and the colloid is not cured completely or even not cured. If the curing temperature is too high, the curing reaction speed of the colloid can rapidly rise, so that the curing speed is too high, and the curing uniformity and the curing strength are affected.
Optionally, the identification layer is a colored paint.
In one aspect, the indicia layer may be a colored paint to ensure that the indicia layer is easily identified. On the other hand, because the marking layer only plays a role in observing the filling height of the transparent colloid, the thickness of the marking layer is as small as possible, and the color coating can be firmly combined with the transparent colloid on the basis of ensuring easy identification, so that the accuracy of the test is ensured. In a particular embodiment, the marking layer may also be a black coating applied by a black pen, which is also easy to view and display, and which is easy to remove.
Optionally, the area of the identification layer is smaller than the area of the first surface.
Specifically, after the transparent colloid is cured, if the filling degree is low, the first surface may be concave, h1 can be obtained only by measuring the distance between the center of the concave and the bottom surface of the colloid cavity, and then h1 is smaller than h 2; if the filling degree is larger, the first surface may be convex, and h1 can be obtained by measuring the distance between the center of the convex surface and the bottom surface of the colloid cavity, wherein h1 is larger than h 2. At this time, only the mark layer is required to cover the center of the first surface, namely the center of the concave surface or the convex surface, so that h1 can be accurately measured, namely the area of the mark layer can be obviously smaller than that of the first surface, therefore, the use amount of the mark layer can be saved, the time for marking the mark layer is reduced, and the mark layer is convenient to remove at the later stage.
Optionally, after the filling degree of the gelatin body meets the requirement or the filling degree of the transparent colloid does not meet the requirement, the method further comprises the following steps:
and removing the identification layer by using a solvent.
Because the filling degree of the transparent colloid directly influences the sealing, fixing, water-proof and optical performance effects of the product, the purity of the transparent colloid also influences the action effect of the transparent colloid. In order to ensure the purity of the transparent colloid, the identification layer on the first surface of the transparent colloid may be removed after the filling degree test of the transparent colloid is completed. Specifically, if the marking layer is an organic coating, the marking layer can be dissolved by using an organic solvent such as ethanol by using a similar compatible principle; if the marking layer is an inorganic coating, the marking layer can be cleaned by using an inorganic solvent such as deionized water.
Referring to fig. 2, an embodiment of the present disclosure further provides a testing apparatus using the above testing method, including:
the cavity is formed by opening one side of the cavity;
the transparent colloid 3 is filled in the colloid cavity;
the identification layer 4 is arranged on the first surface of the transparent colloid 3, and the identification layer 3 at least covers the center of the first surface of the transparent colloid 3;
a measuring assembly configured to measure a distance h1 of the identification layer 4 from the bottom surface of the colloid cavity 3 and a height h2 of the colloid cavity 3.
According to the testing device disclosed by the embodiment of the disclosure, the non-transparent identification layer 4 is coated on the first surface of the transparent colloid 3, so that the measuring assembly can be adopted to directly observe and test that the filling height h1. of the transparent colloid 3 is possibly concave or convex because the first surface of the transparent colloid 3 is possibly concave or convex, in order to more accurately measure h1, the identification layer 4 is required to at least cover the center of the first surface, namely the center of the concave or convex, by comparing the difference △ h between h1 and h2 with a preset difference, whether the filling degree of the transparent colloid 3 meets the requirement can be conveniently and quickly judged, and the testing accuracy is high.
Optionally, referring to fig. 2, the testing apparatus further includes:
In particular, the transparent gel 3 is generally used for sealing, fixing and waterproofing an electronic component in a product. In the testing device of the present disclosure, the electronic component 1 and the housing 2 form a cavity for accommodating the transparent colloid 3, so that the transparent colloid 3 can completely cover and protect the electronic component 1.
Optionally, the measurement assembly is a 3D microscope.
In particular, the transparent gel 3 may be used for sealing, fixing and waterproofing of microelectronic components in products. Since the filling amount of the transparent gel 3 is small, even if the marking layer 4 is used for marking, it is difficult to directly observe the filling amount of the transparent gel 3, and it is more difficult to obtain the filling degree of the transparent gel 3. The 3D microscope can amplify the image of the transparent colloid 3, and the distance h1 between the identification layer 4 and the bottom surface of the colloid cavity and the height h2 of the colloid cavity can be observed at a plurality of angles, so that the measurement accuracy of the testing device is improved.
The embodiment of the disclosure also provides an application of the testing method or the testing device in a heart rate sensor.
In addition, the application range of the transparent colloid is wide, so that the transparent colloid can be used in small electronic equipment such as a mobile phone and a smart watch with small size, and can also be used in large equipment such as a vehicle, so that the testing device disclosed by the disclosure can also be applied to other equipment with requirements on the filling degree of the transparent colloid, and the disclosure is not limited to the above.
Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the foregoing examples are for purposes of illustration only and are not intended to limit the scope of the present disclosure. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.
Claims (11)
1. A method for testing the filling degree of transparent colloid is characterized by comprising the following steps:
coating a non-transparent identification layer on a first surface of a transparent colloid cured in a colloid cavity, wherein the identification layer at least covers the center of the first surface;
measuring the distance h1 between the identification layer and the bottom surface of the colloid cavity and the depth h2 of the colloid cavity, and calculating the difference value △ h between h1 and h 2;
determining △ h if it is less than a predetermined difference;
△ h is less than the preset difference value, the filling degree of the transparent colloid is in accordance with the requirement, or △ h is more than the preset difference value, the filling degree of the transparent colloid is not in accordance with the requirement.
2. The method for testing according to claim 1, wherein before coating the non-transparent identification layer on the first surface of the transparent colloid after curing in the colloid cavity, the method further comprises:
pouring the transparent colloid into the colloid cavity by adopting a glue pouring process;
and curing the transparent colloid in the colloid cavity.
3. The test method according to claim 2, wherein the potting pressure of the potting process is in the range of 0.3 to 0.6MPa, and the potting temperature is in the range of 20 to 45 ℃.
4. The testing method as claimed in claim 2, wherein the curing process comprises a first stage curing and a second stage curing, the first stage curing is UV curing, the curing time is 30-90s, the curing temperature of the second stage curing is 100-150 ℃, and the curing time is 15-60 min.
5. The test method of claim 1, wherein the identification layer is a colored paint.
6. The testing method of claim 1, wherein the identification layer has an area that is less than an area of the first surface.
7. The method of claim 1, further comprising, after the gelatin fill level is satisfactory or the clear gel fill level is unsatisfactory:
and removing the identification layer by using a solvent.
8. A test apparatus using the test method according to any one of claims 1 to 7, comprising:
the cavity is formed by opening one side of the cavity;
the transparent colloid (3) is filled in the colloid cavity;
the identification layer (4), the identification layer (4) is arranged on the first surface of the transparent colloid (3), and the identification layer (3) at least covers the center of the first surface of the transparent colloid (3);
a measuring assembly configured to measure a distance h1 of the identification layer (4) from the bottom surface of the colloid cavity (3) and a height h2 of the colloid cavity (3).
9. The testing device of claim 8, further comprising:
electronic component (1) and casing (2), casing (2) are the annular setting, one side opening of casing (2) with electronic component (1) connect and form the cavity.
10. The testing device of claim 8, wherein the measurement assembly is a 3D microscope.
11. Use of a test method according to any one of claims 1 to 7 or a test device according to any one of claims 8 to 10 in a heart rate sensor.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010366888.6A CN111412853A (en) | 2020-04-30 | 2020-04-30 | Testing method and testing device for filling degree of transparent colloid and application |
| PCT/CN2020/135045 WO2021218162A1 (en) | 2020-04-30 | 2020-12-09 | Testing method and testing apparatus for degree to which transparent colloid is filled, and application thereof |
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| CN202010366888.6A CN111412853A (en) | 2020-04-30 | 2020-04-30 | Testing method and testing device for filling degree of transparent colloid and application |
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| WO2021218162A1 (en) | 2021-11-04 |
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