A device for testing the wear resistance of an aluminum strip coating

Abstract

The utility model relates to a kind of aluminium strip coating wear resistance testing device of sectional material coating wear resistance test technical field, including workbench and the rack located above workbench, vacuum adsorption component is embedded in the middle part of workbench, the vacuum adsorption component includes: object table, it is installed in the middle part of workbench, its inside is equipped with cavity, and multiple air holes that communicate with cavity are arranged on upper table surface;Vacuum pump, its air inlet is sealed with cavity communication, for making cavity form negative pressure to adsorb aluminium strip to be measured;The inside of the rack is equipped with driving part and the testing component controlled by driving part, the driving part drives testing component to descend to contact the surface of aluminium strip to be measured.The utility model fixes aluminium strip evenly by vacuum adsorption component: the air hole of object table is arranged in concentric circle, cooperate vacuum pump to generate negative pressure, make aluminium strip to be measured completely adhere object table, ensure that the aluminium strip to be measured of relatively thin thickness does not occur positional deviation or deformation in the testing process.

Description

Technical Field

[0001] This utility model relates to the field of thin-film coating wear resistance testing technology, and in particular to a device for testing the wear resistance of aluminum strip coating. Background Technology

[0002] When coated aluminum strips are used in the medical field, the coating primarily enhances the material's functionality, safety, and adaptability to meet the specific needs of medical scenarios. For example, in the medical field, antibacterial coatings release antibacterial agents (such as silver ions, quaternary ammonium salts, etc.) or form physical barriers (such as nanostructures) to disrupt the cell walls or membranes of bacteria, fungi, and viruses, inhibiting their metabolism or directly killing microorganisms, thereby improving the safety and functionality of medical devices. However, such coatings have strict requirements for wear resistance.

[0003] The existing Chinese patent with publication number CN222618437U discloses a coating wear resistance testing device. However, this device performs the test by pressing and clamping the test sample at both ends, and then using the frequent extension and retraction of the push cylinder to drive the moving block and the probe at the bottom of the slide rod to move between them. Although this device can test the wear resistance of the coating, it still has the following defects: 1. The open test allows wear powder to float in the air, polluting the environment; 2. It is difficult to adapt to thin aluminum strips by only pressing and clamping the two ends.

[0004] To address this, we designed a device for testing the wear resistance of aluminum strip coatings. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, this utility model discloses a device for testing the wear resistance of aluminum strip coating.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A device for testing the wear resistance of aluminum strip coating includes a worktable and a frame located above the worktable. A vacuum adsorption assembly is embedded in the middle of the worktable. The vacuum adsorption assembly includes:

[0008] The platform is installed through the middle of the workbench. It has a cavity inside and multiple ventilation holes connected to the cavity are arranged on the upper surface.

[0009] A vacuum pump, whose air inlet is sealed and connected to the cavity, is used to create a negative pressure in the cavity to adsorb the aluminum strip to be tested.

[0010] The inner side of the frame is provided with a drive unit and a test assembly controlled by the drive unit. The drive unit drives the test assembly to descend to contact the surface of the aluminum strip to be tested.

[0011] Furthermore, the vent holes are arranged in at least one set of concentric circles with the center of the stage as the center.

[0012] Furthermore, the test assembly includes a test motor, the output shaft of which is connected to a rotating shaft via a coupling; the rotating shaft is coaxial with the stage, and a horizontal mounting plate is provided at its lower end along its radial direction; a probe is provided on the lower surface of the horizontal mounting plate, and the vent holes are distributed outside the probe's movement trajectory.

[0013] Furthermore, at least two of the horizontal mounting plates are arranged symmetrically along the rotation axis.

[0014] Furthermore, multiple probes are installed at intervals along the length of the horizontal mounting plate;

[0015] Each probe is connected to a pressure regulating component to adjust the pressure of the probe on the aluminum strip being tested.

[0016] Furthermore, a pressure sensor is provided between the pressure regulating component and the probe.

[0017] Furthermore, the bottom of the drive unit is provided with a sealing cover that completely covers the test area.

[0018] Furthermore, the sealing cover includes:

[0019] The fixed cover has an outward bend at the lower end;

[0020] The movable sleeve has a sliding sleeve located on the outer bend and an inner bend at the upper end;

[0021] The pressure adjusting spring is sleeved on the outer surface of the fixed cover and located above the movable sleeve;

[0022] A limit ring is threadedly connected to the fixed cover to adjust the compression of the pressure regulating spring.

[0023] Compared with the prior art, the beneficial effects of this utility model are:

[0024] 1. The aluminum strip is uniformly fixed by the vacuum adsorption component: the air holes of the stage are arranged in concentric circles. With the help of the vacuum pump, negative pressure is generated so that the aluminum strip under test is completely attached to the stage, ensuring that the thinner aluminum strip under test does not shift or deform during the test.

[0025] 2. The vent is positioned away from the probe's movement trajectory to avoid interference from vacuum adsorption in the wear area;

[0026] 3. Achieve a fully enclosed testing environment: The sealing cover can automatically close the space during the testing process to prevent dust from overflowing and polluting the surrounding environment;

[0027] 4. Sealing cover assists in fixing the aluminum strip under test: By adjusting the preload of the pressure regulating spring through the limit ring, the movable sleeve is pressed tightly against the edge of the aluminum strip under test, which not only assists in fixing the aluminum strip under test, but also improves the sealing effect;

[0028] 5. The installation of multiple probes on the horizontal mounting plate, and the ability of each probe to adjust the pressure through the corresponding pressure regulating component, enables the function of testing multiple points at once. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of this utility model;

[0030] Figure 2 This is a cross-sectional view of the present invention;

[0031] Figure 3 This is a schematic diagram of the structure of the stage in this utility model;

[0032] Figure 4 This is a schematic diagram of the test component structure in this utility model.

[0033] In the diagram: 1. Workbench; 2. Frame; 3. Vacuum adsorption assembly; 31. Stage; 311. Cavity; 312. Vent hole; 32. Vacuum pump; 4. Test assembly; 41. Test motor; 42. Rotary shaft; 43. Horizontal mounting plate; 44. Probe; 45. Pressure regulating component; 46. Pressure sensor; 6. Sealing cover; 61. Fixed cover; 611. Outer bend; 62. Movable sleeve; 621. Inner bend; 63. Pressure regulating spring; 64. Limiting ring. Detailed Implementation

[0034] The present invention will be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if terms such as "upper", "lower", "front", "rear", "left", "right" indicate orientation or positional relationship, they are only corresponding to the drawings of this application for the convenience of describing the present invention. It should be understood that if terms such as "end", "side", "end portion", "side part", "lateral", "longitudinal", etc. indicate orientation or positional relationship, they are only corresponding to the length and width of the corresponding component. That is, "end" indicates the head and tail area in the length direction of the corresponding component, and "side part" indicates the head and tail area in the width direction of the corresponding component. They are used for the convenience of describing the present invention and do not indicate or imply that the device or element referred to must have a specific orientation.

[0035] Example 1, in conjunction with Appendix Figure 1-4A device for testing the wear resistance of aluminum strip coating includes a workbench 1 and a frame 2 located above the workbench 1; if necessary, the bottom of the workbench 1 is provided with support legs. A vacuum adsorption assembly 3 is embedded in the middle of the workbench 1, and the vacuum adsorption assembly 3 includes:

[0036] The platform 31 is installed through the middle of the workbench 1. It has a cavity 311 inside and multiple ventilation holes 312 connected to the cavity 311 are arranged on the upper surface.

[0037] Furthermore, the stage 31 is a cylindrical metal block, which is embedded in the through hole in the middle of the worktable 1. It has a cavity 311 machined inside, and ventilation holes 312 are evenly distributed on the table surface.

[0038] Furthermore, the vents 312 are arranged in at least one set of concentric circles with the center of the stage 31 as the center.

[0039] The vacuum pump 32 has its air inlet end sealed and connected to the cavity 311, which is used to create a negative pressure in the cavity 311 to adsorb the aluminum strip to be tested.

[0040] Furthermore, the vacuum pump 32 is connected to the bottom interface of the cavity 311 via a hose to evacuate the aluminum strip under test so that it is in close contact with the stage.

[0041] The inner side of the frame 2 is provided with a drive unit 5 and a test component 4 controlled by the drive unit 5. The drive unit 5 drives the test component 4 to descend to contact the surface of the aluminum strip to be tested.

[0042] Furthermore, the drive component 5 is selected from telescopic devices such as pneumatic cylinders or hydraulic cylinders, and is vertically installed in the middle of the crossbeam of the frame 2.

[0043] In this embodiment, the test component 4 is connected to the output terminal of the driver 5, and includes:

[0044] The test motor 41 is preferably a stepper motor, and its output shaft drives the rotating shaft 42 through a coupling.

[0045] A horizontal mounting plate 43 is welded to the lower end of the rotating shaft 42, and a probe 44 is installed under each mounting plate.

[0046] As needed, to ensure force balance, the lower end of the rotating shaft 42 has at least two rotationally symmetrically distributed horizontal mounting plates 43.

[0047] Specifically, to prevent the position of the vent 312 from affecting the test results, the vent 312 is located outside the movement trajectory of the probe 44.

[0048] Since the movement of the probe 44 is driven by the test motor 41 through the rotating shaft 42, the movement trajectory of the probe 44 is circular. It should be noted that the vent 312 being located outside the movement trajectory of the probe 44 means that it is not on the circle of the movement trajectory of the probe 44.

[0049] Test procedure: 1. Lay the aluminum strip flat on the upper surface of the stage 31; 2. Start the vacuum pump 32 to adsorb and fix it; 3. Drive the test component 4 to descend, so that the probe 44 comes into contact with the surface of the aluminum strip to be tested; 4. The test motor 41 drives the rotating shaft 42 to rotate, which drives the probe 44 to scratch the surface of the aluminum strip to be tested.

[0050] It should be noted that during the test, the following data need to be recorded: the number of rotations of the test motor 41 driving the rotating shaft 42, the pressure of the probe 44 pressing down on the surface of the aluminum strip under test, and the amount of wear on the coating of the aluminum strip under test.

[0051] Example 2, in conjunction with Appendix Figure 1 and 4 A device for testing the wear resistance of aluminum strip coatings is described. In Example 1, only one location of the aluminum strip can be tested at a time. Therefore, this embodiment optimizes Example 1.

[0052] Multiple probes 44 are installed at intervals along the length of the horizontal mounting plate 43.

[0053] To ensure stable pressure on the aluminum strip under test during operation, each probe 44 is connected to a pressure regulating component 45. A pressure sensor 46 is installed between the pressure regulating component 45 and the probe 44. The pressure regulating component 45 adjusts the pressure of the probe 44 on the aluminum strip under test based on the information fed back from the pressure sensor 46. This design effectively prevents the outer probe 44 from moving a greater distance than the inner probe 44, which could lead to different wear levels on the corresponding aluminum strip coating and probe 44, causing a sharp decrease in pressure on the aluminum strip under test by the outer probe 44 and resulting in inaccurate test results.

[0054] Example 3, in conjunction with Appendix Figure 1-2 A device for testing the wear resistance of aluminum strip coatings is described. In Examples 1 and 2, the testing area is open, causing wear powder to float in the air, which is detrimental to the surrounding environment. Therefore, this embodiment optimizes Examples 1 and 2.

[0055] The bottom of the drive unit 5 is equipped with a sealing cover 6, which completely covers the test area. The sealing cover 6 includes:

[0056] The fixed cover 61 is fixed to the bottom of the drive component 5, and its outer bent part 611 is sleeved with the movable sleeve 62.

[0057] The inner bend 621 of the movable sleeve 62 and the outer bend 611 of the fixed cover 61 form a sliding seal.

[0058] When the drive component 5 drives the fixed cover 61 to descend, the movable sleeve 62 first contacts the worktable, and the spring is compressed to form a dynamic seal.

[0059] As needed, the central axis of the fixed cover 61 is collinear with the central axis of the stage. In this case, when the aluminum strip to be tested is circular and larger than the outer diameter of the movable sleeve 62, the edge of the aluminum strip to be tested can be pressed together by the movable sleeve 62. A pressure adjusting spring 63 and a limiting ring 64 are fitted on the outer surface of the fixed cover 61. The pressure adjusting spring 63 is located between the movable sleeve 62 and the limiting ring 64. The limiting ring 64 is threaded into the fixed cover 61. The compression of the pressure adjusting spring 63 is adjusted by the limiting ring 64, thereby causing the movable sleeve 62 to press the edge of the aluminum strip to be tested.

[0060] The parts of this utility model not described in detail are prior art. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the above embodiments should be regarded as exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended to include all changes that fall within the meaning and scope of the equivalents of the claims in this utility model, and no reference numerals in the claims should be regarded as limiting the content of the claims.

Claims

1. A device for testing the wear resistance of aluminum strip coating, comprising a workbench (1) and a frame (2) located above the workbench (1), characterized in that: The workbench (1) has a vacuum adsorption component (3) embedded in its center. The vacuum adsorption component (3) includes: The platform (31) is installed through the middle of the workbench (1), and has a cavity (311) inside. The upper surface of the platform is provided with multiple ventilation holes (312) that communicate with the cavity (311). A vacuum pump (32) has its air inlet end sealed and connected to the cavity (311) to create a negative pressure in the cavity (311) to adsorb the aluminum strip to be tested; The frame (2) is provided with a drive unit (5) and a test component (4) controlled by the drive unit (5). The drive unit (5) drives the test component (4) to descend to contact the surface of the aluminum strip to be tested.

2. The aluminum strip coating wear resistance testing device according to claim 1, characterized in that: The ventilation holes (312) are arranged in at least one set of concentric circles with the center of the stage (31) as the center.

3. The aluminum strip coating wear resistance testing device according to claim 1, characterized in that: The test assembly (4) includes a test motor (41), whose output shaft is connected to a rotating shaft (42) via a coupling; the rotating shaft (42) is coaxial with the stage (31), and a horizontal mounting plate (43) is provided at its lower end along its radial direction; a probe (44) is provided on the lower surface of the horizontal mounting plate (43), and the vent (312) is distributed outside the movement trajectory of the probe (44).

4. The aluminum strip coating wear resistance testing device according to claim 3, characterized in that: At least two horizontal mounting plates (43) are arranged symmetrically along the rotation axis (42).

5. The aluminum strip coating wear resistance testing device according to claim 3, characterized in that: Multiple probes (44) are installed at intervals along the length of the horizontal mounting plate (43). Each probe (44) is connected to a pressure regulating component (45) for adjusting the pressure of the probe (44) on the aluminum strip to be tested.

6. The aluminum strip coating wear resistance testing device according to claim 5, characterized in that: A pressure sensor (46) is provided between the pressure regulating component (45) and the probe (44).

7. The aluminum strip coating wear resistance testing device according to claim 1, characterized in that: The bottom of the drive unit (5) is provided with a sealing cover (6), which completely covers the test area.

8. The aluminum strip coating wear resistance testing device according to claim 7, characterized in that: The sealing cover (6) includes: The fixed cover (61) has an outward bend (611) at the lower end. The movable sleeve (62) has a sliding sleeve located on the outer bend (611) and an inner bend (621) at the upper end. The pressure adjusting spring (63) is sleeved on the outer surface of the fixed cover (61) and located above the movable sleeve (62); A limiting ring (64) is threadedly connected to a fixed cover (61) to adjust the compression of the pressure regulating spring (63).

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