Watertightness detection device

Abstract

The present invention relates to the technical field of detection equipment, and specifically discloses a water tightness detection device for detecting the water tightness of a frame assembly. The frame assembly includes a middle frame provided with a filling hole, and it comprises: a carrier; a pressing cover for covering the frame assembly; a test cavity is enclosed by the carrier, the frame assembly and the pressing cover; a detection hole communicating with the test cavity is provided on the pressing cover; a vertical linear driving mechanism for driving the pressing cover to press down the frame assembly tightly; a water injection and pressurization module, the water injection and pressurization module includes a filling head for plugging the filling hole and a first horizontal linear driving mechanism for driving the filling head to insert into or disengage from the filling hole. A first flow channel and a second flow channel are provided in the filling head, and the first flow channel and the second flow channel communicate through the test cavity. The present invention provides a water tightness detection device, which can realize the water tightness detection of the frame assembly, thereby improving the production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of detection equipment, and in particular to a water tightness detection device. Background Art

[0002] Generally, the frame assembly of a smart watch includes a middle frame and several components such as side buttons installed on the middle frame. Among them, several through holes are generally provided on the middle frame, such as microphone holes and speaker holes. To ensure that the connection tightness between components such as side buttons and the middle frame meets the requirements, before leaving the factory, the frame assembly needs to be subjected to water tightness detection.

[0003] However, there is currently no dedicated equipment for realizing the water tightness detection of the frame assembly. Therefore, it is necessary to develop a detection device for performing water tightness detection on the frame assembly. Summary of the Invention

[0004] An object of the present invention is to provide a water tightness detection device that can realize the water tightness detection of the frame assembly, thereby improving production efficiency.

[0005] To achieve the above object, the present invention provides a water tightness detection device for performing water tightness detection on a frame assembly. The frame assembly includes a middle frame with open structures at both the upper and lower ends and several components installed on the middle frame. The middle frame is provided with a filling hole. The water tightness detection device includes:

[0006] A carrier for covering the lower opening of the frame assembly;

[0007] A pressing cover located above the carrier for covering the upper opening of the frame assembly. The carrier, the frame assembly, and the pressing cover enclose and form a test chamber. The pressing cover is provided with a detection hole communicating with the test chamber;

[0008] A vertical linear driving mechanism for driving the pressing cover to press down on the frame assembly;

[0009] A water injection and pressurization module. The water injection and pressurization module includes a filling head for blocking the filling hole and a first horizontal linear driving mechanism for driving the filling head to insert into or disengage from the filling hole. The filling head is provided with a first flow channel and a second flow channel, and the first flow channel and the second flow channel communicate through the test chamber.

[0010] Optionally, a lower sealing ring is fixedly provided on one side of the carrier close to the frame assembly; an upper sealing ring is fixedly provided on one side of the pressing cover close to the frame assembly.

[0011] Optionally, it further includes a water tank;

[0012] The water outlet of the water tank is communicated with the first flow channel through a water pump;

[0013] The water inlet of the water tank is communicated with the second flow channel.

[0014] Optionally, the first flow channel is further connected with a gas supply device.

[0015] Optionally, a vacuum pumping mechanism is further included, and the vacuum pumping mechanism is communicated with the detection hole.

[0016] Optionally, a bottom plate and a water retaining frame located on the bottom plate are further included, and the water retaining frame and the bottom plate enclose a receiving groove with an upward opening;

[0017] The carrier is fixedly arranged on the bottom plate and is located in the receiving groove.

[0018] Optionally, a vertical pressure sensor is arranged between the vertical linear driving mechanism and the gland; a first horizontal pressure sensor is arranged between the filling head and the first horizontal linear driving mechanism.

[0019] Optionally, an abnormal drain hole is arranged at the central position of the carrier, and the test cavity is communicated with an abnormal drain valve through the abnormal drain hole.

[0020] Optionally, the frame assembly is further provided with a plurality of through holes; a plugging module is correspondingly arranged for each through hole;

[0021] The plugging module includes a plugging head for plugging the corresponding through hole and a second horizontal linear driving mechanism for driving the plugging head to approach or move away from the through hole.

[0022] Optionally, a second horizontal pressure sensor is arranged between the second horizontal linear driving mechanism and the plugging head.

[0023] The beneficial effects of the present invention are as follows: a water tightness detection device is provided, a gland and a carrier are arranged to seal the upper and lower openings of the frame assembly to form a closed test cavity; a water injection and pressurization module is arranged to insert into the filling hole, which can not only seal the filling hole, but also facilitate injecting gas and water into the test cavity through the first flow channel and the second flow channel, and finally the pressure change in the test cavity can be obtained through hole detection, so as to effectively detect the water tightness of the frame assembly. Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1Schematic structural diagram of the table frame assembly provided for the embodiment;

[0026] Figure 2 Front view schematic diagram of the gland, table frame assembly and carrier provided for the embodiment;

[0027] Figure 3 Top view schematic diagram of the water injection and pressurization module, plugging module and table frame assembly provided for the embodiment;

[0028] Figure 4 Connection pipeline diagram of the water tightness detection device provided for the embodiment.

[0029] In the figure:

[0030] 1. Table frame assembly; 101. Middle frame; 1011. Filling hole; 1012. Through hole; 102. Parts;

[0031] 2. Bottom plate;

[0032] 3. Water retaining frame;

[0033] 4. Carrier; 401. Abnormal drainage hole;

[0034] 5. Gland; 501. Detection hole;

[0035] 6. Vertical linear drive mechanism;

[0036] 7. Water injection and pressurization module; 701. Filling head; 7011. First flow channel; 7012. Second flow channel; 702. First horizontal linear drive mechanism;

[0037] 8. Plugging module; 801. Plugging head; 802. Second horizontal linear drive mechanism;

[0038] 9. Water tank;

[0039] 10. Vacuum pumping mechanism;

[0040] 11. Water pump;

[0041] 12. Gas supply equipment;

[0042] 1301. First stop valve; 1302. Second stop valve; 1303. Air extraction stop valve; 1304. Gas supply stop valve. Detailed implementation method

[0043] In order to make the objectives, features, and advantages of the present invention more obvious and understandable, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the embodiments described below are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0044] In the description of the present invention, it should be understood that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component.

[0045] In addition, terms such as "long", "short", "inner", "outer", etc. indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or component referred to must have this specific orientation or be constructed and operated in this specific orientation, and thus should not be construed as a limitation of the present invention.

[0046] The following further illustrates the technical solutions of the present invention with reference to the accompanying drawings and through specific embodiments.

[0047] This embodiment provides a watertightness detection device for detecting the watertightness of a frame assembly.

[0048] See Figure 1 , the frame assembly 1 includes a middle frame 101 with open structures at both the upper and lower ends and a number of components 102 installed on the middle frame 101. The middle frame 101 is provided with a number of through holes, such as microphone holes, speaker holes, etc. For the convenience of description, one of the through holes is marked as a filling hole 1011, and the other through holes are marked as through holes 1012.

[0049] See Figures 2 to 4 , the watertightness detection device includes a bottom plate 2, a water retaining frame 3, a carrier 4, a gland 5, a vertical linear drive mechanism 6, a water injection and pressurization module 7, a number of plugging modules 8, a water tank 9, and a vacuum pumping mechanism 10.

[0050] The water retaining frame 3 is fixedly arranged on the bottom plate 2 and encloses with the bottom plate 2 to form a receiving groove with an upward opening.

[0051] The carrier 4 is fixedly arranged on the bottom plate 2 and is located in the receiving groove. After placing the frame assembly 1 on the carrier 4, the carrier 4 can cover the lower opening of the frame assembly 1.

[0052] The gland 5 is located above the carrier 4, and the vertical linear drive mechanism 6 is used to drive the gland 5 to move up and down. Specifically, when the vertical linear drive mechanism 6 drives the gland 5 to press down on the bezel assembly 1, the gland 5 seals the upper opening of the bezel assembly 1. At this time, the carrier 4, the bezel assembly 1, and the gland 5 enclose a test chamber. It can be understood that both the filling hole 1011 and the through hole 1012 communicate with the test chamber. Further, a detection hole 501 communicating with the test chamber is provided on the gland 5. The detection hole 501 is connected to a pressure gauge and the air extraction port of the vacuum extraction mechanism 10 through an air extraction stop valve 1303.

[0053] Optionally, in order to improve the sealing performance of the upper and lower openings of the test chamber, a lower sealing ring is fixedly provided on one side of the carrier 4 close to the bezel assembly 1; an upper sealing ring is fixedly provided on one side of the gland 5 close to the bezel assembly 1.

[0054] The water injection and pressurization module 7 includes a filling head 701 located between the bezel assembly 1 and the water retaining frame 3 and a first horizontal linear drive mechanism 702 located outside the water retaining frame 3. The first horizontal linear drive mechanism 702 is used to drive the filling head 701 to insert into or disengage from the filling hole 1011. When the filling head 701 is inserted into the filling hole 1011, the filling head 701 seals the filling hole 1011, that is, the sealing performance between the filling head 701 and the bezel assembly 1 is relatively good.

[0055] A plugging module 8 is correspondingly arranged for each through hole 1012. The plugging module 8 includes a plugging head 801 for plugging the corresponding through hole 1012 and a second horizontal linear drive mechanism 802 for driving the plugging head 801 to approach or move away from the through hole 1012.

[0056] Further, the filling head 701 is provided with independent first flow channel 7011 and second flow channel 7012, and the first flow channel 7011 and the second flow channel 7012 communicate through the test chamber.

[0057] Optionally, the water outlet of the water tank 9 is sequentially connected to the first flow channel 7011 through a water pump 11, a first stop valve 1301, and a first one-way valve; the second flow channel 7012 is sequentially connected to the water inlet of the water tank 9 through a second one-way valve and a second stop valve 1302. Further, the first flow channel 7011 is also connected to a gas supply device 12 through a gas supply stop valve 1304.

[0058] In this embodiment, an abnormal drainage hole 401 is provided at the central position of the carrier 4, and the test chamber is connected to an abnormal drainage valve through the abnormal drainage hole 401.

[0059] To facilitate the control of the pressure applied by each linear drive mechanism to the frame assembly 1, a vertical pressure sensor is provided between the vertical linear drive mechanism 6 and the gland 5; a first horizontal pressure sensor is provided between the filling head 701 and the first horizontal linear drive mechanism 702; a second horizontal pressure sensor is provided between the second horizontal linear drive mechanism 802 and the plugging head 801.

[0060] Optionally, each of the linear drive mechanisms is an electric cylinder, a pneumatic cylinder, a hydraulic cylinder, or a motor screw assembly, etc.

[0061] Furthermore, both the filling head 701 and the plugging head 801 adopt a profiling design, so they can be closely attached to the surface of the middle frame 101.

[0062] The working process of the waterproof detection device provided in this embodiment is as follows:

[0063] ① At the beginning, each linear drive mechanism is in the retracted state; the air supply shut-off valve 1304, the air extraction shut-off valve 1303, the first shut-off valve 1301, the second shut-off valve 1302, and the abnormal drain valve are all closed, so the water pump 11, the vacuum extraction mechanism 10, the air supply device 12, etc. are all not working.

[0064] ② Each second horizontal linear drive mechanism 802 extends, and the plugging head 801 seals each through hole 1012 on the middle frame 101; the first horizontal linear drive mechanism 702 extends, and the filling head 701 seals the filling hole 1011.

[0065] ③ Place the frame assembly 1 on the carrier 4, the vertical linear drive mechanism 6 extends, and the gland 5 presses down on the frame assembly 1; thus, the entire test chamber is in a closed state.

[0066] ④ Open the air extraction shut-off valve 1303 and the vacuum extraction mechanism 10 to evacuate the test chamber; maintain the pressure for a period of time, observe the change in the pressure gauge reading, and ensure that the airtightness of the test chamber is good.

[0067] ⑤ Close the vacuum extraction mechanism 10 and the air extraction shut-off valve 1303, open the first shut-off valve 1301 and the second shut-off valve 1302; the water pump 11 fills the water in the water tank 9 into the test chamber through the first flow channel 7011 (the original air in the test chamber flows out through the second flow channel 7012 so that the water can flow into the test chamber).

[0068] ⑥ Close the first stop valve 1301 and the second stop valve 1302; maintain the pressure for a period of time and observe the change in the pressure gauge reading. If the change in the pressure gauge reading exceeds the allowable range, it indicates that the connection seal between the middle frame 101 of the watch frame assembly 1 and the component 102 is insufficient, and the product's water tightness fails; if the change in the pressure gauge reading is within the allowable range, it indicates that the connection seal between the middle frame 101 of the watch frame assembly 1 and the component 102 meets the standard, and the product's water tightness passes. Further, the air supply stop valve 1304 can be opened to supply high-pressure gas to the first flow channel 7011, thereby increasing the pressure value in the test chamber to simulate the water tightness of the watch frame assembly 1 under deep water high-pressure conditions;

[0069] ⑦ Open the air supply stop valve 1304 and the second stop valve 1302. The gas supplied by the air supply device 12 presses the accumulated water in the test chamber back into the water tank 9 through the second flow channel 7012 for recycling to avoid wasting water resources;

[0070] ⑧ If an abnormal situation occurs during the experiment and emergency drainage is required, the abnormal drainage valve can be opened for drainage. Optionally, the abnormal drainage valve is an overflow valve, that is, when the water pressure in the test chamber reaches a certain value, the abnormal drainage valve automatically opens for pressure relief to prevent damage to the watch frame assembly 1.

[0071] Optionally, the water tightness detection device is provided with a "start" button. After the worker places the watch frame assembly 1 on the carrier 4, clicks the "start" button, and the water tightness detection device automatically executes the above steps ② to ⑧.

[0072] The water tightness detection device provided in this embodiment has the following advantages:

[0073] ① The air tightness and water tightness tests are carried out in stages with high test accuracy;

[0074] ② The test time is short, the test efficiency is high, and manual operation is reduced.

[0075] ③ In case of abnormal conditions, the accumulated water in the test chamber can be drained in time.

[0076] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A watertightness detection device for detecting the watertightness of a frame assembly. The frame assembly includes a middle frame with open structures at both the upper and lower ends and several components installed on the middle frame. The middle frame is provided with a filling hole. Characterized in that, The watertightness detection device includes: A carrier for covering the lower opening of the frame assembly; A gland located above the carrier for covering the upper opening of the frame assembly. A test chamber is enclosed by the carrier, the frame assembly, and the gland. The gland is provided with a detection hole communicating with the test chamber; A vertical linear driving mechanism for driving the gland to press down on the frame assembly; An injection and pressurization module. The injection and pressurization module includes a filling head for blocking the filling hole and a first horizontal linear driving mechanism for driving the filling head to insert into or disengage from the filling hole. The filling head is provided with a first flow channel and a second flow channel, and the first flow channel and the second flow channel are communicated through the test chamber; A water tank. The water outlet of the water tank is communicated with the first flow channel through a water pump. The water inlet of the water tank is communicated with the second flow channel. Among them, the first flow channel is also connected with a gas supply device; A vacuum pumping mechanism communicated with the detection hole.

2. The watertightness detection device according to claim 1, Characterized in that, A lower sealing ring is fixedly provided on one side of the carrier close to the frame assembly; an upper sealing ring is fixedly provided on one side of the gland close to the frame assembly.

3. The watertightness detection device according to claim 1, Characterized in that, It further includes a bottom plate and a water retaining frame located on the bottom plate. The water retaining frame and the bottom plate enclose an accommodating groove with an upward opening; The carrier is fixedly provided on the bottom plate and is located in the accommodating groove.

4. The watertightness detection device according to claim 1, Characterized in that, A vertical pressure sensor is provided between the vertical linear driving mechanism and the gland; a first horizontal pressure sensor is provided between the filling head and the first horizontal linear driving mechanism.

5. The watertightness detection device according to claim 1, Characterized in that, An abnormal drainage hole is provided at the central position of the carrier, and the test chamber is communicated with an abnormal drainage valve through the abnormal drainage hole.

6. The watertightness detection device according to claim 1, Characterized in that, The frame assembly is further provided with several through holes; each through hole is correspondingly provided with a plugging module; The plugging module includes a plugging head for plugging the corresponding through hole and a second horizontal linear driving mechanism for driving the plugging head to approach or move away from the through hole.

7. The watertightness detection device according to claim 6, Characterized in that, A second horizontal pressure sensor is provided between the second horizontal linear driving mechanism and the plugging head.

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