Photoconductive drum coating uniformity testing device

Abstract

The utility model discloses a photoconductive drum coating uniformity testing device, which relates to the technical field of electric coating uniformity testing equipment and comprises a working table, a computer is mounted on one side of the top end of the working table, and a light shield is hinged to the center of the top end of the working table; a mounting shell is arranged on one side of the top end of the workbench, a shell is arranged on one side of the mounting shell, and a threaded pipe is mounted on one side of the mounting shell. A motor is installed on one side of the shell, and the output end of the motor is connected with a rotating rod. According to the utility model, the screw rod can rotate in the threaded pipe through the sliding block and the sliding groove in the sleeve pipe, so that the screw rod and the photoconductive drum installed at one end of the screw rod can rotate and move, optical signals reflected or transmitted from the drum surface can be received through the photoelectric sensor, the optical signals are converted into electric signals, and the electric signals are processed and analyzed; during testing, different surfaces of the photoconductive drum can be tested, so that the testing efficiency of the surface coating of the photoconductive drum is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrocoating uniformity testing equipment, in particular to a photoconductive drum coating uniformity testing device. Background Art

[0002] A photoconductive drum, also known as an organic photoconductive drum (OPC drum), is a new high-tech information processing device that forms and migrates photogenerated carriers when excited by light. It is a core component in devices such as laser printers, electrostatic copiers, and laser fax machines. The surface coating of a photoconductive drum typically exhibits photoconductivity, meaning it absorbs light energy and converts it into electrical energy. This coating also improves the drum's sensitivity, resolution, and durability. The coating also protects the drum from mechanical damage, chemical corrosion, and environmental factors, thereby extending its lifespan. The coating's uniformity directly impacts the formation of the electrostatic latent image and print quality. If the coating is uneven, the laser beam will have inconsistent irradiation effects on the photosensitive drum, leading to blurred printed images, uneven colors, or stripes. Current photoconductive drum coating uniformity testing devices generally use photoelectric sensors to receive light signals reflected or transmitted from the drum surface, convert them into electrical signals, and process and analyze them. By comparing the changes in light intensity in different areas, the coating uniformity can be evaluated. Although it is possible to test the coating uniformity of the drum surface through photoelectric sensors, since the photoconductive drum is cylindrical as a whole, it can generally only test one side of the photoconductive drum, making it inconvenient to test other sides, thereby reducing the efficiency of testing the coating uniformity of the photoconductive drum surface. Utility Model Content

[0003] The utility model provides a photoconductive drum coating uniformity testing device, which solves the problems in the background technology.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A photoconductive drum coating uniformity testing device comprises a workbench, a computer is installed on one side of the top of the workbench, and a light shield is hinged at the center of the top of the workbench; a mounting shell is provided on one side of the top of the workbench, and a shell is provided on one side of the mounting shell, and a threaded tube is installed on one side of the mounting shell; a motor is installed on one side of the shell, and the output end of the motor is connected to a rotating rod, and the surface of the rotating rod is connected to a first gear, the surface of the first gear is meshedly connected to a second gear, and the center of the second gear is connected to a sleeve, first sliding grooves are provided on both sides of the inner wall of the sleeve, and the interior of the first sliding groove is slidably connected to a first slider, and the surface of the first slider is connected to a screw threadedly connected to the inside of the threaded tube, and the other end of the screw is connected to a first fixing tube for mounting the photoconductive drum body.

[0006] As a further description of the above technical solution:

[0007] A photoelectric sensor and a light source are installed on the inner wall of the light shield.

[0008] As a further description of the above technical solution:

[0009] Bolts for fixing the photoconductive drum body are connected to the surface of the first fixing tube via annular equidistant threads.

[0010] As a further description of the above technical solution:

[0011] A bearing is provided on the surface of the sleeve, and a support rod connected to the inner wall of the mounting shell is connected to the surface of the bearing.

[0012] As a further description of the above technical solution:

[0013] A support plate is connected to the other side of the top of the workbench, and a connecting tube is connected to the surface of the support plate, second slide grooves are connected to both sides of the inner wall of the connecting tube, and a second slider is slidably connected to the inner wall of the second slide groove, and a circular plate is connected to the surface of the second slider, and a second fixing tube for fixing the photoconductive drum body is rotatably connected to the center of the circular plate.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0015] In the utility model, the slider and the slide groove inside the sleeve can make the screw rotate inside the threaded tube, so that the screw and the photoconductive drum installed at one end of the screw can rotate and move, so that the photoelectric sensor can receive the light signal reflected or transmitted from the drum surface, convert it into an electrical signal, and process and analyze it. During the test, different surfaces of the photoconductive drum can be tested, so as to improve the test efficiency of the surface coating of the photoconductive drum. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of a photoconductive drum coating uniformity testing device;

[0017] Figure 2 This is a schematic diagram of the structure of the workbench surface in the utility model;

[0018] Figure 3 This is a schematic diagram of the surface structure of the casing in the utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the casing in the utility model;

[0020] Figure 5This is a schematic diagram of the internal structure of the connecting pipe in the utility model.

[0021] Legend:

[0022] Workbench; 2. Computer; 3. Light shield; 4. Mounting shell; 5. Housing; 6. Threaded tube; 7. Motor; 8. Rotating rod; 9. First gear; 10. Second gear; 11. Sleeve; 12. First slide; 13. First slider; 14. Screw; 15. First fixing tube; 16. Conductive drum body; 17. Bolt; 18. Bearing; 19. Support rod; 20. Support plate; 21. Connecting tube; 22. Second slide; 23. Second slider; 24. Circular plate; 25. Second fixing tube. DETAILED DESCRIPTION

[0023] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Reference Figure 1-Figure 5A photoconductive drum coating uniformity testing device includes a workbench 1, a computer 2 is installed on one side of the top of the workbench 1, and a light shield 3 is hinged at the center of the top of the workbench 1; a mounting shell 4 is provided on one side of the top of the workbench 1, and a shell 5 is provided on one side of the mounting shell 4, and a threaded tube 6 is installed on one side of the mounting shell 4; a motor 7 is installed on one side of the shell 5, and the output end of the motor 7 is connected to a rotating rod 8, and the surface of the rotating rod 8 is connected to a first gear 9, the surface of the first gear 9 is meshedly connected to a second gear 10, and the center of the second gear 10 is connected to a sleeve 11, and first sliding grooves 12 are provided on both sides of the inner wall of the sleeve 11, and a first slider 13 is slidably connected to the inside of the first sliding groove 12, and the surface of the first slider 13 is connected to a screw 14 that is threadedly connected to the inside of the threaded tube 6. The other end of the screw 14 is connected to a first fixing tube 15 for installing a photoconductive drum body 16. First, the photoconductive drum body 16 is installed and limited by a bolt 17. The light beam emitted by the light source is evenly irradiated onto the surface of the photoconductive drum after adjustment and focusing by the optical system. Through the operation of the motor 7, the rotating rod 8 can drive the first gear 9, the second gear 10, the sleeve 11, etc. to rotate. The sleeve 11 can drive the screw 14 to rotate inside the threaded tube 6 through the first slide groove 12 and the first slider 13. Since the screw 14 and the threaded tube 6 are threadedly connected, the screw 14 can drive the first fixing tube 15 and the photoconductive drum body 16 to rotate and move on the surface of the photoelectric sensor, and the photoelectric sensor receives the light signal reflected or transmitted from the drum surface and converts it into an electrical signal. These electrical signals contain information about the uniformity of the coating. The data acquisition and processing system collects the electrical signals output by the photoelectric sensor and processes and analyzes them. By comparing the changes in light intensity in different areas, the uniformity of the coating can be evaluated. The test results are displayed in real time through the software interface, and the user can view the uniformity distribution of the coating. A connecting groove is provided at the contact point between the mounting shell 4 and the shell 5 to facilitate the meshing connection between the first gear 9 and the second gear 10.

[0025] Furthermore, a photoelectric sensor and a light source are installed on the inner wall of the light shield 3. The light source provides stable and controllable lighting conditions for illuminating the surface of the photoconductive drum so as to observe and analyze the reflection, transmission or scattering characteristics of the coating. The light source also includes optical elements such as lenses, reflectors, and apertures for adjusting and focusing the light beam to ensure that the light can be evenly and accurately irradiated to the surface of the photoconductive drum, directing the light beam emitted by the light source to the photoconductive drum, and collecting the light signal reflected or transmitted from the drum surface. The photoelectric sensor converts the received light signal into an electrical signal for subsequent processing and analysis. The photoelectric sensor can detect slight changes in light intensity, thereby reflecting the difference in coating uniformity. At least three photoelectric sensors are installed inside the light shield 3 to facilitate testing the surface needle of the photoconductive drum body 16. Since the screw 14 drives the photoconductive drum body 16 to move in a spiral shape on the surface of the photoelectric sensor, photoelectric sensors need to be set at different positions to facilitate testing the coating degree of the entire surface of the photoconductive drum body 16.

[0026] Furthermore, the surface of the first fixing tube 15 is annularly and equidistantly threaded with bolts 17 for fixing the photoconductive drum body 16 . The bolts 17 are used to fix the photoconductive drum body 16 inside the first fixing tube 15 .

[0027] Furthermore, a bearing 18 is provided on the surface of the sleeve 11 , and a support rod 19 connected to the inner wall of the mounting shell 4 is connected to the surface of the bearing 18 . The support rod 19 and the bearing 18 facilitate supporting and limiting the sleeve 11 .

[0028] Furthermore, a support plate 20 is connected to the other side of the top of the workbench 1, and a connecting tube 21 is connected to the surface of the support plate 20, and second slide grooves 22 are connected to both sides of the inner wall of the connecting tube 21, and a second slider 23 is slidably connected to the inner wall of the second slide groove 22, and a circular plate 24 is connected to the surface of the second slider 23, and a second fixing tube 25 for fixing the photoconductive drum body 16 is rotatably connected to the center of the circular plate 24. Bolts 17 are also arranged in an annular shape at equal intervals on the surface of the second fixing tube 25, which is convenient for limiting the other end of the photoconductive drum body 16 through the second fixing tube 25. At the same time, the second fixing tube 25 also rotates inside the circular plate 24 as the screw 14 rotates and moves, and moves inside the second slide groove 22 through the circular plate 24 and the second slider 23.

[0029] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for testing uniformity of a photoconductive drum coating, comprising a workbench (1), characterized in that: A computer (2) is installed on one side of the top of the workbench (1), and a light shield (3) is hinged at the center of the top of the workbench (1); A mounting shell (4) is provided on one side of the top end of the workbench (1), a housing (5) is provided on one side of the mounting shell (4), and a threaded pipe (6) is installed on one side of the mounting shell (4); A motor (7) is installed on one side of the housing (5), and the output end of the motor (7) is connected to a rotating rod (8), and the surface of the rotating rod (8) is connected to a first gear (9), the surface of the first gear (9) is meshedly connected to a second gear (10), and the center of the second gear (10) is connected to a sleeve (11), and first sliding grooves (12) are respectively provided on both sides of the inner wall of the sleeve (11), and the interior of the first sliding groove (12) is slidably connected to a first slider (13), and the surface of the first slider (13) is connected to a screw (14) that is threadedly connected to the interior of the threaded tube (6), and the other end of the screw (14) is connected to a first fixing tube (15) for mounting a photoconductive drum body (16).

2. The photoconductive drum coating uniformity testing device according to claim 1, characterized in that: A photoelectric sensor and a light source are installed on the inner wall of the light shield (3).

3. The photoconductive drum coating uniformity testing device according to claim 1, characterized in that: The surface of the first fixing tube (15) is annularly equidistantly threaded with bolts (17) for fixing the photoconductive drum body (16).

4. The photoconductive drum coating uniformity testing device according to claim 1, characterized in that: A bearing (18) is provided on the surface of the sleeve (11), and the surface of the bearing (18) is connected to a support rod (19) connected to the inner wall of the mounting shell (4).

5. The photoconductive drum coating uniformity testing device according to claim 1, characterized in that: The other side of the top of the workbench (1) is connected to a support plate (20), and the surface of the support plate (20) is connected to a connecting tube (21), the inner walls of the connecting tube (21) are connected to second chutes (22) on both sides, and the inner walls of the second chutes (22) are slidably connected to a second slider (23), the surface of the second slider (23) is connected to a circular plate (24), and the center of the circular plate (24) is rotatably connected to a second fixing tube (25) for fixing the photoconductive drum body (16).

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