CN106323558A - Waterproof test method and system - Google Patents

Abstract

The invention provides a waterproof test system, which comprises a vacuum water tank, a vacuum generator, a vacuum sucker and a controller, wherein: the vacuum water tank is provided with a first through hole positioned at the upper part of the water level and a second through hole positioned at the lower part of the water level; the vacuum generator is connected with the first through hole of the vacuum water tank through an air pipe; the vacuum sucker is matched with the shape of a tested product, and is connected with the second through hole of the vacuum water tank through an air pipe and is higher than the vacuum water tank; the controller is connected with the vacuum generator and used for controlling the vacuum generator to adjust the air pressure in the vacuum water tank. The invention tests the tested product, and if the product is unqualified, water can not enter the product, so that the product is prevented from being damaged, and the product testing cost is reduced.

Description

A waterproof testing method and system

technical field

The invention belongs to the field of product testing, in particular to a waterproof testing method and system.

Background technique

In the process of product manufacturing, in order to ensure that the functional parameters of the product meet the preset requirements, it is necessary to carry out quality testing on the product. For example, for waterproof products, including watches, mobile phones and other devices, it is necessary to test their waterproof performance. To ensure that the manufactured products can reach the waterproof level set on the product parameters.

At present, the waterproof test of the product is generally performed by soaking the product in the water depth corresponding to the set waterproof level requirements. After the soaking time reaches the predetermined length of time, then check whether the product is leaking. If no water enters the product , the product passed the test, and if water entered the product, the product failed the test.

Although this test method can effectively carry out the waterproof test, during the test process, due to the failure of the product to pass the test, the internal components of the product are often damaged due to water ingress, resulting in a large product test loss.

Contents of the invention

The purpose of the present invention is to provide a waterproof test method and system to solve the problem that the products that fail the test often damage the internal components of the product due to water ingress when performing the waterproof test in the prior art, resulting in relatively large product test losses. question.

In the first aspect, an embodiment of the present invention provides a waterproof testing system, the system includes a vacuum water tank, a vacuum generator, a vacuum suction cup, and a controller, wherein:

The vacuum water tank is provided with a first through hole located at the upper part of the water level and a second through hole located at the lower part of the water level;

The vacuum generator is connected to the first through hole of the vacuum water tank through a gas pipe;

The vacuum suction cup matches the shape of the product to be tested, and the vacuum suction cup is connected to the second through hole of the vacuum water tank through a trachea and is positioned higher than the vacuum water tank;

The controller is connected with the vacuum generator for controlling the vacuum generator to adjust the air pressure in the vacuum water tank.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the system further includes a pressure regulating valve, the first end of the pressure regulating valve is connected to the first through hole through an air pipe, and the pressure regulating valve The second end of the pressure valve is connected to the first predetermined air pressure space, and the control end of the pressure regulating valve is connected with the controller.

With reference to the first possible implementation of the first aspect, in the second possible implementation of the first aspect, the system further includes a first one-way solenoid valve and a second one-way solenoid valve, wherein:

The inlet end of the first one-way solenoid valve is connected to the pressure regulating valve, and the outlet end of the first one-way solenoid valve is connected to the first through hole;

The air outlet end connected to the second one-way solenoid valve is connected to the air pipe connected to the vacuum chuck, and the air inlet end of the second one-way solenoid valve is connected to the second predetermined air pressure space;

The control terminal of the first one-way solenoid valve and the control terminal of the second one-way solenoid valve are connected with the controller.

With reference to the first aspect, in a third possible implementation manner of the first aspect, the system further includes a pressure gauge, and the pressure gauge is connected to the air pipe between the vacuum chuck and the second through hole.

With reference to the first aspect, in a fourth possible implementation manner of the first aspect, the vacuum generator is further provided with a muffler.

With reference to the second possible implementation of the first aspect, in the second aspect, an embodiment of the present invention provides a waterproof testing method, which is characterized in that the method includes:

Align the product under test with the vacuum chuck;

Turn on the vacuum generator, reduce and maintain the air pressure in the vacuum water tank to the target air pressure according to the waterproof level requirements of the tested product;

When the air pressure in the vacuum water tank is at the target air pressure for a predetermined time, it is judged whether the product is waterproof according to the air bubbles in the second through hole.

With reference to the second aspect, in the first possible implementation manner of the second aspect, the method further includes:

After the product detection is completed, the second one-way solenoid valve is opened to increase the air pressure of the air pipe between the vacuum chuck and the second through hole, and the product to be tested is taken out from the vacuum chuck.

With reference to the second aspect, in the second possible implementation of the second aspect, the step of turning on the vacuum generator, and reducing the air pressure in the vacuum water tank to the target air pressure according to the waterproof level requirements of the tested product includes:

Turn on the vacuum generator, and reduce the air pressure in the air pipe between the second through hole and the vacuum suction cup to P0-P1 according to the water pressure value P1 corresponding to the waterproof level of the tested product, where P0 is the standard atmospheric pressure.

With reference to the second aspect, in the third possible implementation manner of the second aspect, the step of judging whether the product is waterproof according to the air bubbles in the second through hole is specifically:

Comparing the frequency of air bubbles generated in the second through hole with a value greater than the preset frequency, if the frequency is greater than the preset frequency, it means that the product has failed the waterproof test.

With reference to the second aspect, in a fourth possible implementation manner of the second aspect, the method further includes:

When the air pressure in the vacuum water tank is too low, the pressure regulating valve is opened to allow air to pass through the first one-way solenoid valve and enter the vacuum water tank.

In the present invention, by setting the vacuum water tank, the first through hole is set at the upper part of the water level of the vacuum water tank, the second through hole is set at the lower part of the water level of the vacuum water tank, the product to be tested is aligned with the vacuum suction cup, and the vacuum water tank is placed on the vacuum generator. When the air pressure inside drops, because the air pressure of the air pipe between the vacuum suction cup and the second through hole is greater than the air pressure in the vacuum water tank, air bubbles will be generated at the second through hole. After a predetermined period of time, the product can be judged according to the generation of air bubbles If it is qualified, if it is not qualified, it will not cause water to enter the product, preventing damage to the product, thereby helping to reduce product testing costs.

Description of drawings

Fig. 1 is a schematic structural diagram of a waterproof testing system provided by the first embodiment of the present invention;

Fig. 2 is a schematic structural diagram of a waterproof testing system provided by a second embodiment of the present invention;

Fig. 3 is a flow chart of the realization of the waterproof testing method provided by the third embodiment of the present invention.

detailed description

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

The main purpose of the embodiments of the present invention is to provide a waterproof testing system and method to solve the problems in the prior art that the product is easily damaged and the test result is not ready when performing a waterproof test on the product. When testing in the prior art, it is necessary to soak the product in water, and judge whether the product is qualified by detecting whether the product has entered water. This detection method may cause water to enter the product for unqualified products. Compared with watches, For electronic products such as mobile phones, the entry of water will affect the loss or even damage of the electronic circuits inside the product, which is not conducive to saving testing costs. Below in conjunction with accompanying drawing, the present invention will be further described.

Embodiment one:

Figure 1 shows a schematic structural view of a waterproof testing system provided by the first embodiment of the present invention, which is described in detail as follows:

The waterproof testing system described in the embodiment of the present invention includes:

Vacuum water tank 1, vacuum generator 2, vacuum sucker 3, controller, wherein:

The vacuum water tank 1 is provided with a first through hole 11 located at the upper part of the water level and a second through hole 12 located at the lower part of the water level;

The vacuum generator 2 is connected to the first through hole 11 of the vacuum water tank 1 through a gas pipe;

The vacuum chuck 3 matches the shape of the product to be tested, and the vacuum chuck 3 is connected to the second through hole 12 of the vacuum water tank 1 through a trachea and is positioned higher than the vacuum water tank;

The controller is connected with the vacuum generator 2 for controlling the vacuum generator 2 to adjust the air pressure in the vacuum water tank 1 .

Specifically, the vacuum generator 2 in the embodiment of the present invention can select vacuum generators of different strengths according to the waterproof level requirements of the tested product, that is, the maximum power value of the vacuum generator is the same as that of the tested product. Corresponds to the waterproof level of the product. The higher the waterproof level of the product under test, the vacuum generator with a higher maximum power value should be selected to ensure a stable vacuum environment when testing the product under test.

Since the test is used to judge whether the product is qualified or not, it is judged according to the frequency of bubbles, or the number of bubbles and other characteristics. In order to avoid the vibration generated by the vacuum generator 2 from affecting the test results, such as affecting the vacuum chuck and the product under test To ensure the firmness of the combination, a buffer device can be provided at the lower part of the vacuum generator 2 to buffer the vibration generated by the vacuum generator 2 .

In addition, the vacuum generator can also be equipped with a muffler for reducing the noise generated by the vacuum generator, so as to prevent the vibration caused by the noise from affecting the accuracy of the test results.

The vacuum water tank 1, in the non-working state, is not a vacuum in the vacuum water tank 1, because the air pressure in the vacuum water tank 1 needs to be reduced during the test, so it is named the vacuum water tank. The vacuum water tank is provided with a liquid with a certain water level, not limited to water, and all liquids that can be used to observe the bubbles generated in the second through hole under the liquid level are applicable. Since water is readily available and cheap, it is preferred to use water for testing.

The lower part of the water level of the vacuum water tank 1 is provided with a second through hole 12, and the second through hole 12 is connected to the vacuum suction cup through the air pipe. In order to ensure that the product will not enter the product due to the water in the vacuum water tank, a bent air pipe can be used. Connect the second through hole above the water level.

The vacuum suction cup 3 is used to align the part of the product under test that needs to be tested for air leakage or waterproof, and the accuracy of the test can be better improved by matching the vacuum suction cup with the shape of the product under test. In addition, for different products to be tested, corresponding vacuum suction cups can be set. When testing different products, only the corresponding vacuum suction cups need to be replaced.

The controller is used to control the work of the vacuum generator 1, and correspondingly adjust the working hours of the vacuum generator according to the waterproof level of the product to be tested, thereby adjusting the air pressure between the vacuum water tank 1 and the vacuum chuck 3 Poor, equal to the pressure corresponding to the waterproof level.

For example, if the set waterproof level is 1 meter, the corresponding water pressure value is P1. If the product under test is tested under normal atmospheric pressure, then the pressure at the vacuum suction cup is P0-P1, so that the product under test can be tested under normal atmospheric pressure. The pressure is the same as the pressure value received at 1 meter in the water, and the same pressure condition can be used to detect whether it is leaking or waterproof.

In the embodiment of the present invention, by setting a vacuum water tank, a first through hole is set at the upper part of the water level of the vacuum water tank, and a second through hole is set at the lower part of the water level of the vacuum water tank, so that the product to be tested is aligned with the vacuum suction cup, and the vacuum generator puts the vacuum water tank When the air pressure decreases, because the air pressure of the air pipe between the vacuum suction cup and the second through hole is greater than the air pressure in the vacuum water tank, air bubbles will be generated at the second through hole. After a predetermined period of time, it can be judged whether the product is If it is qualified, if it is not qualified, it will not cause water to enter the product and prevent damage to the product, thereby helping to reduce the cost of product testing.

Embodiment two:

Figure 2 shows a schematic structural view of a waterproof testing system provided by a second embodiment of the present invention, which is described in detail as follows:

The waterproof testing system described in the embodiment of the present invention includes:

Vacuum water tank 1, vacuum generator 2, vacuum sucker 3, controller, wherein:

The vacuum water tank 1 is provided with a first through hole 11 located at the upper part of the water level and a second through hole 12 located at the lower part of the water level;

The vacuum generator 2 is connected to the first through hole 11 of the vacuum water tank 1 through a gas pipe;

The vacuum chuck 3 matches the shape of the product to be tested, and the vacuum chuck 3 is connected to the second through hole 12 of the vacuum water tank 1 through a trachea and is positioned higher than the vacuum water tank;

The controller is connected with the vacuum generator 2 for controlling the vacuum generator 2 to adjust the air pressure in the vacuum water tank 1 .

Moreover, the system also includes a pressure regulating valve 5, the first end of the pressure regulating valve is connected to the first through hole 11 through a gas pipe, and the second end of the pressure regulating valve 5 is connected to the first predetermined air pressure. space, and the control end of the pressure regulating valve is connected with the controller. The first predetermined air pressure space may be a standard atmospheric pressure space, or a space with a relatively close air pressure value.

By setting the pressure regulating valve, it can be used to reduce the air pressure in the vacuum water tank too much when the vacuum generator depressurizes the vacuum water tank. In order to ensure the accuracy of the test, it is necessary to adjust the air pressure in the vacuum water tank through the pressure regulating valve. Meet the accuracy requirements of the test air pressure.

The control end of the pressure regulating valve can also be connected with the controller, and the opening size and opening time of the pressure regulating valve can be controlled by the controller to realize more accurate pressure regulating control.

In a further optimized embodiment, the system also includes a first one-way solenoid valve 6 and a second one-way solenoid valve 7, wherein:

The inlet end of the first one-way solenoid valve 6 is connected to the pressure regulating valve 5, and the gas outlet end of the first one-way solenoid valve is connected to the first through hole;

The air outlet end connected to the second one-way solenoid valve 7 is connected to the air pipe connected to the vacuum chuck 3, and the air inlet end of the second one-way solenoid valve 7 is connected to the space of the second predetermined air pressure. 2. The space with predetermined air pressure can be a space with standard atmospheric pressure, or a space with relatively close air pressure values;

The control terminal of the first one-way solenoid valve and the control terminal of the second one-way solenoid valve are connected with the controller.

By setting the first one-way solenoid valve 6, it can be used to control the pressure regulation together with the first pressure regulating valve 5, so that the air flow from the outside enters the vacuum water tank, so as to achieve the purpose of increasing the air pressure value in the vacuum water tank.

The second one-way solenoid valve 7 can be used to prevent the water in the water tank from entering the product under test at the end of the detection of a single product. The second one-way solenoid valve can be opened first to allow the airflow in the air to enter In the air pipe connecting the second through hole and the vacuum suction cup, the air pressure in the air pipe is increased so that the water will not flow back, thereby effectively protecting the product under test.

Of course, if the second one-way solenoid valve is not provided, the product and the vacuum suction cup can also be taken off directly.

It is worth noting that during the test, the second one-way solenoid valve needs to be opened first, and then the first one-way solenoid valve is opened, so as to better ensure that water will not flow back into the product under test.

As a further optimized embodiment of the present invention, the system further includes a pressure gauge 8 connected to the air pipe between the vacuum chuck 2 and the second through hole.

By setting the pressure gauge, you can directly observe the current air pressure in the vacuum suction cup, and adjust the air pressure value of the pressure gauge to P0-P1 according to the pressure P1 corresponding to the waterproof level of the tested product. Wherein, the P0 is a standard atmospheric pressure value.

In addition, the air pressure value in the pressure gauge in the embodiment of the present invention can also be sent to the controller, and the controller automatically controls the vacuum generator and the pressure regulating valve according to the set target air pressure value to be adjusted. Adjust, improve the intelligence of the entire device, reduce the workload of testers, and improve test efficiency.

On the basis of Embodiment 1, the embodiment of the present invention further adds a pressure regulating valve, and can also add a first one-way solenoid valve or a second one-way solenoid valve, etc., so as to effectively improve the accuracy of air pressure control. It is beneficial to improve the test accuracy. In addition, through the second one-way solenoid valve, it can effectively prevent water from flowing back to the product under test, which is beneficial to better protect the product.

Embodiment three:

Figure 3 shows the implementation process of the waterproof testing method provided by the third embodiment of the present invention, which is described in detail as follows:

In step S301, the product to be tested is aligned with the vacuum chuck.

The product can be aligned with the vacuum chuck by the test staff or mechanically automated. In order to better improve the accuracy of the test, corresponding vacuum chucks can be set for different tested products.

In step S302, the vacuum generator is turned on, and the air pressure in the vacuum water tank is reduced and maintained to a target air pressure according to the waterproof level requirement of the tested product.

In order to better adjust the air pressure in the vacuum water tank, an air pressure gauge can be set at the position of the air pipe between the second through hole of the vacuum water tank and the vacuum disk, and the air pressure gauge is used to display the air pressure value, or collect The air pressure value is sent to the controller, and the controller automatically controls the work of the vacuum generator.

Wherein, the step of opening the vacuum generator and reducing the air pressure in the vacuum water tank to the target air pressure according to the waterproof level requirements of the tested product includes:

Turn on the vacuum generator, and reduce the air pressure in the air pipe between the second through hole and the vacuum suction cup to P0-P1 according to the water pressure value P1 corresponding to the waterproof level of the tested product, where P0 is the standard atmospheric pressure.

For example, the corresponding water pressure value at a depth of 1 meter can be obtained directly by calculation. The calculation method can be: the standard atmospheric pressure value + the pressure value generated at a water depth of 1 meter.

Certainly, if the pressure in the vacuum water tank drops too much, the air pressure value therein can be adjusted through the pressure regulating valve and the first one-way solenoid valve provided, after the air passes through the pressure regulating valve and the first one-way solenoid valve, Increase the air pressure in the vacuum tank.

In addition, in order to further improve the test efficiency of the present invention, on the air pipe between the second through hole of the vacuum water tank and the vacuum chuck, and between the second through hole and the second one-way solenoid valve, A valve can also be set at the position between them. When a product is tested, close the valve, open the second one-way solenoid valve, and take out the tested product to ensure that the pressure in the water tank will not change, thereby improving the test time. The efficiency of pressure adjustment in the vacuum water tank.

In step S303, when the air pressure in the vacuum water tank is at the target air pressure for a predetermined time, it is determined whether the product is waterproof according to the air bubbles in the second through hole.

After the air pressure in the vacuum water tank reaches the predetermined air pressure, the air pressure at the vacuum suction cup needs to be gradually reduced. During the reduction process, air bubbles will be generated in the air pipe between the vacuum suction cup and the second through hole.

After reaching a predetermined air pressure value and keeping the air pressure value stable, after a predetermined period of time, if the product under test does not leak, no air bubbles will be generated at the second through hole, or only a small amount of air bubbles will be generated.

It can be judged that the tested product is qualified by comparing the frequency of bubbles, and of course other methods can also be used, such as judging the amount of bubbles.

That is to say, the present invention reduces the air pressure in the vacuum water tank and the vacuum chuck to form an air pressure difference at both ends of the tested product, which is equal to the pressure difference generated by the tested product at the corresponding water depth.

But the difference is that what the present invention produces is air pressure difference, while the water pressure difference produced in the existing general way, if the product is unqualified, the water in the prior art will enter the product, but the present invention will generate in the water tank bubble.

The waterproof testing method described in the embodiment of the present invention corresponds to the waterproof testing system described in the first and second embodiments, and will not be repeated here.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.

Claims (10)

1. A waterproof testing system, characterized in that, said system comprises a vacuum water tank, a vacuum generator, a vacuum suction cup, and a controller, wherein: The vacuum water tank is provided with a first through hole located at the upper part of the water level and a second through hole located at the lower part of the water level; The vacuum generator is connected to the first through hole of the vacuum water tank through a gas pipe; The vacuum suction cup matches the shape of the product to be tested, and the vacuum suction cup is connected to the second through hole of the vacuum water tank through a trachea and is positioned higher than the vacuum water tank; The controller is connected with the vacuum generator for controlling the vacuum generator to adjust the air pressure in the vacuum water tank. 2. The system according to claim 1, characterized in that the system further comprises a pressure regulating valve, the first end of the pressure regulating valve is connected to the first through hole through a gas pipe, and the first end of the pressure regulating valve is The two ends are connected to the first predetermined air pressure space, and the control end of the pressure regulating valve is connected with the controller. 3. The system according to claim 2, further comprising a first one-way solenoid valve and a second one-way solenoid valve, wherein: The inlet end of the first one-way solenoid valve is connected to the pressure regulating valve, and the outlet end of the first one-way solenoid valve is connected to the first through hole; The air outlet end connected to the second one-way solenoid valve is connected to the air pipe connected to the vacuum chuck, and the air inlet end of the second one-way solenoid valve is connected to the second predetermined air pressure space; The control terminal of the first one-way solenoid valve and the control terminal of the second one-way solenoid valve are connected with the controller. 4. The system according to claim 1, further comprising a pressure gauge connected to the air pipe between the vacuum chuck and the second through hole. 5. The system according to claim 1, characterized in that a muffler is also provided on the vacuum generator. 6. A waterproof testing method based on the waterproof testing system of claim 3, wherein the method comprises: Align the product under test with the vacuum chuck; Turn on the vacuum generator, reduce and maintain the air pressure in the vacuum water tank to the target air pressure according to the waterproof level requirements of the tested product; When the air pressure in the vacuum water tank is at the target air pressure for a predetermined time, it is judged whether the product is waterproof according to the air bubbles in the second through hole. 7. according to the described method of claim 6, it is characterized in that, described method also comprises: After the product detection is completed, the second one-way solenoid valve is opened to increase the air pressure of the air pipe between the vacuum chuck and the second through hole, and the product to be tested is taken out from the vacuum chuck. 8. The method according to claim 6, wherein the step of opening the vacuum generator and reducing the air pressure in the vacuum water tank to the target air pressure according to the waterproof level requirements of the tested product comprises: Turn on the vacuum generator, and reduce the air pressure in the air pipe between the second through hole and the vacuum suction cup to P0-P1 according to the water pressure value P1 corresponding to the waterproof level of the tested product, where P0 is the standard atmospheric pressure. 9. The method according to claim 6, wherein the step of judging whether the product is waterproof according to the air bubbles in the second through hole is specifically: Comparing the frequency of air bubbles generated by the second through hole with a value greater than the preset frequency, if the frequency is greater than the preset frequency, it means that the product has failed the waterproof test. 10. The method according to claim 6, further comprising: When the air pressure in the vacuum water tank is too low, the pressure regulating valve is opened to allow air to pass through the first one-way solenoid valve and enter the vacuum water tank.