Testing device

Abstract

The utility model discloses a testing device and relates to the technical field of electroplating testing. The testing device comprises a tank, a first pole, a second pole and a fixing piece. The tank pool is used for accommodating tank liquid; the first electrode is located in the tank pool and can be at least partially immersed in the tank liquid, and the first electrode comprises a plurality of copper balls; the second pole is of a plate-shaped structure and is located outside the tank, the distance between the highest point of the copper ball of the first pole and the liquid level of the tank liquid is equal to the distance between the midpoint of the second pole and the liquid level of the tank liquid, and the polarity of the first pole is opposite to that of the second pole. The fixing part is used for fixing a sample, so that a to-be-detected surface of the sample can be immersed in the bath solution, and the second electrode can be electrically connected with the sample. By adopting the technology provided by the utility model, the phenomenon that a sample is blocked by microporous powder can be effectively avoided, and the number of micropores of the sample can be accurately measured subsequently.

Description

TECHNICAL FIELD

[0001] The utility model relates to electroplating test technical field, specifically relates to a test device. BACKGROUND

[0002] Since the plastic electroplated workpiece has the characteristics of strong decoration, more functions, strong universality and the like, it gradually develops from simple decorative articles to the fields of high requirement industry, electronics, bathroom and the like, with the salt spray test requirement of the host factory on the decorative electroplated part being higher and higher, that is, the electroplated part is not corroded after the salt spray test. Therefore, how to control various parameters of the electroplated part in the host factory standard range is the main target in the current industry. Among them, the number of micropores usually refers to the number of micropores in the unit area of the material surface, which is an important parameter for measuring the filtering performance, air permeability and other physical properties of the material, and is one of the important factors that can pass the salt spray test.

[0003] The conventional test device usually adjusts the addition of microporous powder according to the test result during the test, so as to simulate and detect the sealing performance and corrosion resistance of the electroplated layer. Among them, the microporous powder is usually a non-conductive particle, which is deposited on the surface of the part during the electroplating process to form a small hole. These micropores simulate possible defects on the material surface, such as cracks, pores and the like. However, when measuring the number of micropores subsequently, the microporous powder blocks the micropores, so that the number of micropores cannot be measured or the number of micropores is not accurately measured, and the microporous powder also makes it difficult for the corrosion medium to penetrate the micropores, thereby reducing the accuracy of the salt spray test. SUMMARY

[0004] The utility model provides a kind of test device to solve the problem of subsequent micropore number parameter measurement inaccuracy caused by adding microporous powder test in prior art.

[0005] To solve the above technical problems, the utility model adopts the technical scheme to provide a kind of test device, the test device includes: tank pool, first pole, second pole and fixing piece.

[0006] The tank pool is used to accommodate tank liquid;The first pole is located in the tank pool and can be at least partially immersed in the tank liquid, wherein the first pole includes a plurality of copper balls;The second pole is a plate structure and is located outside the tank pool, wherein the distance between the highest point of the copper ball of the first pole and the liquid level of the tank liquid is equal to the distance between the midpoint of the second pole and the liquid level of the tank liquid, and the first pole and the second pole are opposite in polarity.

[0007] The fixing piece is used to fix the sample, so that the surface to be measured of the sample can be immersed in the tank liquid, wherein the second pole can be electrically connected with the sample.

[0008] The technical scheme provided by the utility model has the beneficial effects that compared with the prior art:

[0009] By setting the groove pool, the first pole and the second pole, an electrolytic cell can be formed.

[0010] The above-mentioned electrolytic reaction can effectively avoid the plugging phenomenon of the microporous powder on the sample, facilitate the subsequent accurate measurement of the micropore number of the sample, and effectively improve the utilization rate of resources and reduce the emission of heavy metals.

[0011] In the surface treatment process such as electroplating or anodic oxidation, the distance between the cathode and anode and the electrolyte (i.e., the electrolyte) is required to be consistent to ensure the uniformity of the electric field distribution in the entire processing process.

[0012] In some embodiments, the second pole extends along a first direction and is provided with a plurality of positioning points spaced along its extension direction, and the fixing member can be fixed to the positioning points.

[0013] In some embodiments, the second pole is a copper plate, and the second pole is convexly arranged on the outer edge of the groove pool along the first direction.

[0014] In some embodiments, a cathode-anode converter is further included, which is electrically connected to the first pole and the second pole respectively and is used to convert the electrical polarity of the first pole and the second pole.

[0015] By setting the cathode-anode converter, the electrical polarity of the first pole and the second pole can be directly switched, which reduces the complexity of manually switching the connecting line and the influence of the disconnection phenomenon in the manual switching process on the test accuracy, and further improves the test efficiency.

[0016] In some embodiments, the cathode-anode converter comprises a cathode-anode conversion switch and a cathode-anode connecting line, the cathode-anode connecting line comprises an internal connecting line and an external connecting line, the internal connecting line comprises a cathode line and an anode line, the external connecting line is connected with the first electrode and the second electrode respectively, and the cathode-anode conversion switch is used for connecting the cathode line or the anode line of the internal connecting line with the external connecting line.

[0017] By means of the above technical scheme, the internal connecting line of the cathode-anode connecting line can be adjusted by turning the cathode-anode conversion switch, so as to adjust the electrode polarity of the first electrode and the second electrode.

[0018] In some embodiments, the first electrode comprises a plurality of copper frames and a plurality of copper balls, the copper frame has a receiving cavity, and the plurality of copper balls are located in the copper frame.

[0019] By means of the above technical scheme, the copper frame and the plurality of copper balls are used to form a copper ball package as the first electrode, so as to effectively supplement copper ions for the tank solution, and make the test result more accurate.

[0020] In some embodiments, the fixing member is a fixing clamp, the fixing clamp is used for clamping the sample, and the sample is vertically immersed in the tank solution with a surface to be tested. Further, the fixing member comprises a clamping end, the clamping end 41 is protruded from the outer edge of the second electrode along a second direction, so that the sample can be suspended in the tank pool.

[0021] By means of the above technical scheme, the sample is clamped by the clamp, and the clamping end of the fixing clamp which is in contact with the sample is protruded from the outer edge of the second electrode, so that the sample can be suspended in the tank pool.

[0022] In some embodiments, the test device further comprises a rectifier, and the first electrode is connected with the rectifier. By means of the above technical scheme, the first electrode is always in an anode state, and the connection between the first electrode and the rectifier can convert alternating current (AC) power into direct current (DC) power. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed in the following embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0024] Figure 1 is a front view of an embodiment of a test device provided by the present application;

[0025] Figure 2This is a top view of an embodiment of the testing device provided by this utility model;

[0026] Figure 3 This is a schematic diagram of an embodiment of the internal circuit of the anode-cathode converter of a test device provided by this utility model.

[0027] In the picture:

[0028] Tank—10; Tank liquid—11; First pole—20; Copper frame—21; Copper ball—22; Second pole—30; Positioning point—31; Fixing component—40; Clamping end—41; Anode-cathode converter—50; Anode-cathode conversion switch—51; Anode-cathode wiring—52; Internal circuit—53; External circuit—54; Sample—60. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0030] For ease of subsequent description, this application will first combine [the following text is missing from the original] before describing the specific structure of the experimental apparatus. Figure 1 Define a first direction (Z) and a second direction (X). The first direction is the height direction of the test device when it is normally placed, such as the Z direction; the second direction is the width direction of the test device when it is normally placed, such as the X direction.

[0031] It is understood that the mutual perpendicularity in this application is not absolute perpendicularity. Approximate perpendicularity due to processing errors and assembly errors (e.g., the included angle between two structural features is 89.9°) is also within the scope of mutual perpendicularity in this application.

[0032] See Figures 1 to 2 As shown, Figure 1 A front view of an embodiment of the testing apparatus provided in this application is shown; Figure 2 A top view of an embodiment of an experimental apparatus provided in this application is shown.

[0033] In some embodiments, the test apparatus includes: a tank 10, a first electrode 20, a second electrode 30, and a fixture 40.

[0034] The tank 10 is used to contain the tank liquid 11; the first electrode 20 is located in the tank 10 and can be at least partially immersed in the tank liquid 11, wherein the first electrode 20 comprises a plurality of copper balls 22; the second electrode 30 is a plate structure and is located outside the tank 10, wherein the distance between the highest point of the copper ball 22 of the first electrode 20 and the liquid surface of the tank liquid 11 is equal to the distance between the midpoint of the second electrode 30 and the liquid surface of the tank liquid 11, and the first electrode 20 and the second electrode 30 are opposite in polarity.

[0035] The fixing member 40 is used to fix the sample 60, so that the surface to be tested of the sample 60 can be immersed in the tank liquid 11, wherein the second electrode 30 can be electrically connected with the sample 60.

[0036] In the embodiments of the present application, the tank 10, the first electrode 20 and the second electrode 30 are combined to form an electrolytic cell and serve as a test simulation scene of the sample 60. When the fixing member 40 fixes the sample 60 so that the surface to be tested of the sample 60 is located in the tank liquid 11 contained in the tank 10, the first electrode 20 and the second electrode 30 are connected, and then an electrolysis reaction occurs in the tank 10 to test the corrosion behavior of the sample 60.

[0037] Compared with the current method of adjusting the addition of microporous powder according to the test results, the above-mentioned electrolysis reaction can effectively avoid the phenomenon of blocking the micropores of the sample 60 by the microporous powder, and facilitate the subsequent accurate measurement of the number of micropores of the sample 60. Moreover, since the sample 60 is corroded by electrolysis reaction, the electrolytic solution after reaction can be reused, which effectively improves the utilization rate of resources and reduces the emission of heavy metals.

[0038] For example, when the number of micropores of the sample 60 is measured, the micropore diameter is generally measured by image processing technology to calculate parameters such as pore size and pore depth. In surface treatment processes such as electroplating or anodic oxidation, it is required that the distance between the anode and cathode and the tank liquid 11 (i.e. the tank liquid 11) remains consistent to ensure the uniformity of the electric field distribution during the entire processing process. Therefore, the first electrode 20 is arranged in the tank 10, and the second electrode 30 is located outside the tank 10, so that the height of the second electrode 30 can be adjusted according to the height of the tank liquid 11, and thus the first electrode 20 and the second electrode 30 always remain consistent with the liquid level of the tank liquid 11.

[0039] In some embodiments, the second electrode 30 extends along a first direction and is provided with a plurality of positioning points 31 spaced along the extension direction thereof, wherein the fixing member 40 can be fixed to the positioning points 31. By using the above technical solution, the test distance of the sample is marked by arranging a plurality of positioning points 31 on the second electrode 30.

[0040] In the embodiments of the present application, the fixing member 40 is combined with the tank 10, the first electrode 20 and the second electrode 30 to fix the sample 60, so that the surface to be tested of the sample 60 is immersed in the tank liquid 11 contained in the tank 10. Figure 1As shown, the tank 10 can also be provided with liquid level scales and the like to cooperate with the positioning points 31, so that the fixed position of the fixing member 40 at the positioning points 31 can be adjusted according to the height of the tank liquid 11, to ensure that the distance between the second electrode 30 and the first electrode 20 is consistent with the height of the liquid surface of the tank liquid 11.

[0041] For example, the distance between two adjacent positioning points 31 is 8-10 cm. The distance of 8-10 cm is the optimal test distance of the sample 60, and it is more convenient to perform the test by taking the distance between the positioning points 31.

[0042] In some embodiments, the second electrode 30 is a copper plate, and the second electrode 30 is protruded along the outer edge of the tank 10 in the first direction. For example, the second electrode 30 is provided as a copper plate, which can be placed on the top of the tank 10 in the length or width direction of the tank 10 and effectively cooperates with the fixing member 40 to fix the sample 60, wherein the length of the second electrode 30 can be adjusted according to the size of the tank 10. For example, when the volume of the tank 10 is increased to 10 L, the width and length are increased accordingly, and the length of the second electrode 30 is adjusted.

[0043] In some embodiments, the first electrode 20 includes a plurality of copper frames 21 and a plurality of copper balls 22, and the copper frame 21 has a receiving cavity, and the plurality of copper balls 22 are located in the copper frame 21.

[0044] In the embodiments of the present application, the copper frame 21 and the plurality of copper balls 22 constitute a copper ball 22 package as the first electrode 20, which can effectively supplement copper ions for the tank liquid 11, so that the test result is more accurate. For example, the copper frame 21 is formed by a plurality of copper strips. The number of the copper balls 22 is not limited in the present application, for example, four or six copper balls can be used as anodes in the electrolytic reaction.

[0045] In some embodiments, the fixing member 40 is a fixing clamp, which is used to clamp the sample 60 and make the test surface of the sample 60 vertically immersed in the tank liquid 11. Further, the fixing clamp is located at the second electrode 30 and protruded along the outer edge of the second electrode 30 in the second direction, so that the sample 60 can be suspended in the tank 10.

[0046] In the embodiments of the present application, the sample 60 is clamped by the clamp, and the contact end of the fixing clamp with the sample 60 is protruded along the outer edge of the second electrode 30, so that the sample 60 can be suspended in the tank 10.

[0047] Referring to Figure 3 As shown, Figure 3 Fig. 1 shows a schematic diagram of an embodiment of the internal circuit of the anode-cathode converter of the test device provided by the present application.

[0048] In some embodiments, a cathode-anode converter is further included, which is electrically connected with the first electrode 20 and the second electrode 30 respectively and used for converting the electrical polarity of the first electrode 20 and the second electrode 30.

[0049] In the embodiments, the cathode-anode converter is used to directly switch the electrical polarity of the first electrode 20 and the second electrode 30, which reduces the complexity of manually switching the connecting line and the influence of the disconnection during the manual switching on the test accuracy, and further improves the test efficiency.

[0050] In the embodiments, the cathode-anode converter includes a cathode-anode conversion switch and a cathode-anode connecting line 52, the cathode-anode connecting line 52 includes an internal line 53 and an external line 54, the internal line 53 includes a cathode line and an anode line, the external line 54 is connected with the first electrode 20 and the second electrode 30 respectively, and the cathode-anode conversion switch 51 is used to connect the cathode line or the anode line of the internal line 53 with the external line 54.

[0051] For example, the cathode-anode connecting line 52 is connected with the first electrode 20 and the second electrode 30 respectively, as shown in the figure, the first electrode 20 is connected with the B terminal, the second electrode 30 is connected with the A terminal, and the internal connecting line is adjusted by the switch, at this time, the internal path is converted, and the first electrode 20 and the second electrode 30 are adjusted in the corresponding electrode polarity. Figure 3 That is, the internal connecting line of the cathode-anode connecting line 52 is adjusted by the external cathode-anode conversion switch, so as to adjust the electrode polarity of the first electrode 20 and the second electrode 30, so that the first electrode 20 is the anode or the cathode, and the second electrode 30 is the cathode or the anode.

[0052] In the embodiments, the cathode-anode converter is used to directly switch the electrical polarity of the first electrode 20 and the second electrode 30, which reduces the complexity of manually switching the connecting line and the influence of the disconnection during the manual switching on the test accuracy, and further improves the test efficiency.

[0053] In some embodiments, the test device further includes a rectifier, and the first electrode 20 is connected with the rectifier. By using the above technical solution, the first electrode 20 is always in the anode state, and the connection with the rectifier can convert the alternating current (AC) electric energy into the direct current (DC) electric energy.

[0054] The above description is only the implementation manner of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process conversion using the utility model specification and drawing contents, or direct or indirect application in other related technical fields, should be carried in the protection range of the utility model.

Claims

1. A test device, characterized in that The test device comprises: a tank pool for containing tank liquid; a first electrode located in the tank pool and capable of being at least partially immersed in the tank liquid, wherein the first electrode comprises a plurality of copper balls; a second electrode in the form of a plate located outside the tank pool, wherein the distance between the highest point of the copper balls of the first electrode and the tank liquid level is equal to the distance between the midpoint of the second electrode and the tank liquid level, and the first electrode and the second electrode are of opposite polarity; a fixing member for fixing a sample so that the surface to be tested of the sample can be immersed in the tank liquid, wherein the second electrode can be electrically connected to the sample.

2. The test device of claim 1, wherein, The second electrode extends in a first direction and is provided with a plurality of positioning points at intervals along the extension direction, wherein the fixing member can be fixed to the positioning points.

3. The test device of claim 1, wherein, The distance between two adjacent positioning points is 8 m to 10 cm.

4. The test device of claim 1, wherein The second electrode is a copper plate, and the second electrode is convexly provided on the outer edge of the tank pool in the first direction.

5. The test device of claim 1, wherein Further comprising a cathode-anode converter electrically connected to the first electrode and the second electrode and used for converting the electrical polarity of the first electrode and the second electrode.

6. The test device of claim 5, wherein, The cathode-anode converter comprises a cathode-anode conversion switch and a cathode-anode connecting line, the cathode-anode connecting line comprises an internal connecting line and an external connecting line, the internal connecting line comprises a cathode line and an anode line, the external connecting line is connected to the first electrode and the second electrode, and the cathode-anode conversion switch is used for the cathode line or the anode line of the internal connecting line to communicate with the external connecting line.

7. The test device of claim 1, wherein The first electrode comprises a plurality of copper frames and a plurality of copper balls, the copper frame has a receiving cavity, and a plurality of copper balls are located in the copper frame.

8. The test device of claim 1, wherein The fixing member is a fixing clamp, which is used for clamping the sample and making the surface to be tested of the sample vertically immersed in the tank liquid.

9. The test device of claim 7, wherein, The fixing member comprises a clamping end, which is convexly provided on the outer edge of the second electrode in a second direction, so that the sample can be suspended in the tank pool.

10. The test device of claim 1, wherein, The test device further comprises a rectifier, wherein the first electrode is connected to the rectifier.

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