Optical encoder for inkjet printers
By introducing a cleaning component and magnetic connection structure into the grating ruler of the inkjet printer, the problem of print quality degradation caused by dust has been solved, enabling convenient cleaning and replacement of the grating ruler and improving the printer's operational stability and measurement accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU PROGEN INTELLIGENT TECH CO LTD
- Filing Date
- 2025-10-09
- Publication Date
- 2026-07-31
AI Technical Summary
Existing inkjet printer grating rulers are prone to malfunction during use due to dust and other reasons, leading to a decline in print quality, such as misalignment and ghosting, requiring frequent inspection or replacement.
A cleaning assembly including a servo motor, a transmission screw, and a wiping plate was designed to clean dust from the surface of a grating ruler. The magnetic connection and heat dissipation fin structure facilitate the disassembly and replacement of the grating ruler, thereby improving the inkjet position accuracy and measurement precision of the printhead.
Effectively cleans dust from the surface of the grating ruler, ensuring print quality, simplifying the disassembly and replacement process of the grating ruler, and improving the normal operation and measurement accuracy of the inkjet printer.
Smart Images
Figure CN224576378U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of grating ruler technology, specifically a grating ruler for inkjet printers. Background Technology
[0002] The grating ruler used in inkjet printers is the core component of the printer positioning system. It is usually a transparent or metal strip-shaped scale with equally spaced stripes. It is used with a grating decoder. When the carriage moves, the reader scans the stripes and converts the position signal into pulses, which are then transmitted to the main board to achieve precise control of the printhead position. Its specific functions include positioning the printhead movement range, defining the printing area, and precisely controlling the displacement distance to avoid problems such as printing misalignment and ghosting.
[0003] This application improves upon the existing technology. In the existing technology, the existing grating ruler may malfunction due to dust or other reasons during use, resulting in a decrease in print quality. If problems such as printing misalignment or ghosting occur, it may be necessary to check or even replace the grating ruler to ensure the normal operation of the inkjet printer. Utility Model Content
[0004] The purpose of this utility model is to provide a grating ruler for inkjet printers, which solves the problem that existing grating rulers in the background art may malfunction due to dust or other reasons during use, leading to a decline in print quality. For example, if problems such as printing misalignment or ghosting occur, it may be necessary to check or even replace the grating ruler, thereby ensuring the normal operation of the inkjet printer.
[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A grating ruler for an inkjet printer includes a mounting plate with a fixed plate fixedly connected to its top; a cleaning assembly disposed in front of the fixed plate, the cleaning assembly including a servo motor detachably mounted on the left side of the fixed plate, a transmission screw fixedly connected to the output end of the servo motor, a moving block threadedly mounted on the outer wall of the transmission screw, a limit rod movably disposed through the surface of the moving block, and a transmission block fixedly connected to the front end face of the moving block; a transmission plate fixedly connected to the bottom of the transmission block, a mounting groove formed on the outer wall of the transmission plate, and a mounting block movably disposed inside the mounting groove.
[0006] Preferably, a fastening screw hole is provided on the outer wall of the mounting block, a fastening screw is threaded on the inner wall of the fastening screw hole, and a wiping plate is fixedly connected to one end of the mounting block near the mounting plate.
[0007] Preferably, a U-shaped frame is fixedly connected to the front end face of the mounting plate, and a placement groove is provided on the front end face of the U-shaped frame. A second magnetic plate is fixedly provided on both sides inside the placement groove.
[0008] Preferably, the front end face of the second magnetic plate is magnetically connected to the first magnetic plate, a grating ruler body is fixedly connected between the two first magnetic plates, and a pull block is fixedly connected to the front end face of the first magnetic plate.
[0009] Preferably, a heat-conducting fin is fixedly connected to the rear end face of the C-shaped frame, and there are two heat-conducting fins, which are made of aluminum alloy.
[0010] Preferably, a plurality of micro motors are fixedly mounted on the rear end face of the mounting plate, and a cooling fan is fixedly connected to the output end of the micro motors.
[0011] Compared with the prior art, the beneficial effects achieved by this utility model are: 1. Through the structural design of servo motor, transmission plate, fixed plate, transmission block, fastening screw, mounting block, fastening screw hole, wiping plate, transmission screw, mounting groove, limit rod and moving block, the dust on the surface of the grating ruler body can be cleaned, thereby improving the printing quality and better ensuring the normal operation of the inkjet printer. At the same time, it can facilitate the disassembly and cleaning of the wiping plate, which can effectively ensure its cleaning effect.
[0012] 2. Through the structural design of the grating ruler body, the C-shaped frame, the micro motor, the cooling fan, the heat-conducting fins, the pull block, the first magnetic plate, the second magnetic plate, and the placement slot, the grating ruler body can be easily disassembled and replaced, which can further improve the inkjet position of the printhead. At the same time, it can facilitate heat dissipation of the grating ruler body and the C-shaped frame, which can effectively reduce the influence of temperature and thus improve the measurement accuracy. Attached Figure Description
[0013] Figure 1 This is a partial three-dimensional schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of a partial rear view of the present invention; Figure 3 This is a partial structural diagram of the present invention viewed from below; Figure 4 This is a partial structural diagram of the mounting block and wiping plate, which are the main components of this utility model. Figure 5 This is a partial structural diagram of the transmission screw, which is the main feature of this utility model.
[0014] The components are as follows: 1. Servo motor; 2. Transmission plate; 3. Grating ruler body; 4. Fixing plate; 5. Mounting plate; 6. C-shaped frame; 7. Micro motor; 8. Cooling fan; 9. Heat-conducting fins; 10. Transmission block; 11. Fastening screw; 12. Mounting block; 13. Fastening screw hole; 14. Wiping plate; 15. Pull block; 16. First magnetic plate; 17. Second magnetic plate; 18. Placement slot; 19. Transmission screw; 20. Mounting slot; 21. Limiting rod; 22. Moving block. Detailed Implementation
[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0016] Please see Figure 1-5 A grating ruler for an inkjet printer includes a mounting plate 5, with a fixing plate 4 fixedly connected to the top of the mounting plate 5. The cleaning component is located in front of the fixed plate 4. The cleaning component includes a servo motor 1 that is detachably installed on the left side of the fixed plate 4. The output end of the servo motor 1 is fixedly connected to a transmission screw 19. A moving block 22 is threaded on the outer wall of the transmission screw 19. A limit rod 21 is movably provided through the surface of the moving block 22. A transmission block 10 is fixedly connected to the front end face of the moving block 22. A transmission plate 2 is fixedly connected to the bottom of the transmission block 10. An installation groove 20 is provided on the outer wall of the transmission plate 2, and an installation block 12 is movably arranged inside the installation groove 20. Specifically, such as Figure 1 , Figure 4 and Figure 5As shown, during use, the servo motor 1 can be started via an external controller while the grating ruler body 3 is in use. The output of the servo motor 1 drives the transmission screw 19 to rotate, which in turn moves the moving block 22. The movement of the moving block 22, in turn, moves the transmission plate 2 via the transmission block 10. The movement of the transmission plate 2 then moves the wiping plate 14, which wipes the surface of the grating ruler body 3, thus cleaning the dust on the surface and improving print quality. This better ensures the normal operation of the inkjet printer. Furthermore, after a period of use, it can... By rotating the fastening screw 11 until one end of the fastening screw 11 disengages from the fastening screw hole 13, and then moving the wiping plate 14 until the mounting block 12 disengages from the mounting groove 20, the wiping plate 14 can be disassembled. Similarly, the wiping plate 14 can be installed. By facilitating the disassembly and cleaning of the wiping plate 14, its cleaning effect can be effectively guaranteed. This solves the problem that existing grating rulers may malfunction due to dust or other reasons during use, leading to a decrease in print quality. If problems such as printing misalignment or ghosting occur, it may be necessary to check or even replace the grating ruler, thus ensuring the normal operation of the inkjet printer.
[0017] The outer wall of the mounting block 12 is provided with fastening screw holes 13, and fastening screws 11 are threaded on the inner wall of the fastening screw holes 13. A wiping plate 14 is fixedly connected to one end of the mounting block 12 near the mounting plate 5. A U-shaped frame 6 is fixedly connected to the front end of the mounting plate 5. A placement groove 18 is provided on the front end of the U-shaped frame 6. A second magnetic plate 17 is fixedly installed on both sides inside the placement groove 18. A first magnetic plate 16 is magnetically connected to the front end of the second magnetic plate 17. A grating ruler body 3 is fixedly connected between the two first magnetic plates 16. A pull block 15 is fixedly connected to the front end of the first magnetic plate 16. A heat-conducting fin plate 9 is fixedly connected to the rear end of the U-shaped frame 6. There are two heat-conducting fin plates 9. The heat-conducting fin plates 9 are made of aluminum alloy. Multiple micro motors 7 are fixedly installed on the rear end of the mounting plate 5. A cooling fan 8 is fixedly connected to the output end of the micro motor 7. Specifically, such as Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, during use, when the grating ruler body 3 is worn to a certain extent and needs to be replaced, the pull block 15 can be pulled. The movement of the pull block 15 moves the grating ruler body 3 through the first magnetic plate 16 until the grating ruler body 3 is disassembled from the placement slot 18, thus completing the disassembly of the grating ruler body 3. Similarly, after the grating ruler body 3 is placed into the placement slot 18, the mutual attraction between the first magnetic plate 16 and the second magnetic plate 17 can be used to install the grating ruler body 3. This facilitates the disassembly and replacement of the grating ruler body 3. To further improve the inkjet position of the printhead, and when the grating ruler body 3 is installed through the U-shaped frame 6, the heat-conducting fins 9 can absorb the heat of the grating ruler body 3 and the U-shaped frame 6, and the output of the micro motor 7 drives the cooling fan 8 to rotate. The rotation of the cooling fan 8 generates airflow to the heat-conducting fins 9, which can increase the airflow speed on the surface of the heat-conducting fins 9, thereby achieving the purpose of heat dissipation. By facilitating heat dissipation for the grating ruler body 3 and the U-shaped frame 6, the influence of temperature can be effectively reduced, thereby improving the accuracy of measurement.
[0018] Working Principle: In this application, during the use of the grating ruler body 3, the servo motor 1 can be started by the peripheral controller. The output end of the servo motor 1 drives the transmission screw 19 to rotate. The rotation of the transmission screw 19 drives the moving block 22 to move. The movement of the moving block 22 drives the transmission plate 2 to move through the transmission block 10. The movement of the transmission plate 2 drives the wiping plate 14 to move. The movement of the wiping plate 14 can wipe the surface of the grating ruler body 3, thereby cleaning the dust on the surface of the grating ruler body 3, thus improving the printing quality and better ensuring the normal operation of the inkjet printer. At the same time, after a period of use, the fastening screw 11 can be rotated until one end of the fastening screw 11 is disengaged from the fastening screw hole 13. Then, the wiping plate 14 can be moved until the mounting block 12 is disengaged from the mounting groove 20, thus completing the disassembly of the wiping plate 14. Similarly, the wiping plate 14 can be installed. By facilitating the disassembly and cleaning of the wiping plate 14, its cleaning effect can be effectively guaranteed. When the grating ruler body 3 is worn to a certain extent... When replacement is needed, the pull block 15 can be pulled, and the movement of the pull block 15 will drive the grating ruler body 3 to move through the first magnetic plate 16 until the grating ruler body 3 is detached from the placement slot 18, thus completing the disassembly of the grating ruler body 3. Similarly, after the grating ruler body 3 is placed into the placement slot 18, the mutual attraction between the first magnetic plate 16 and the second magnetic plate 17 can be used to install the grating ruler body 3. By facilitating the disassembly and replacement of the grating ruler body 3, the inkjet position of the printhead can be further improved. At the same time, when the grating ruler body 3 is installed through the C-shaped frame 6, the heat-conducting fins 9 can absorb the heat of the grating ruler body 3 and the C-shaped frame 6, and the output end of the micro motor 7 drives the cooling fan 8 to rotate. The rotation of the cooling fan 8 generates airflow to the heat-conducting fins 9, which can increase the airflow speed on the surface of the heat-conducting fins 9, thereby achieving the purpose of heat dissipation. By facilitating the heat dissipation of the grating ruler body 3 and the C-shaped frame 6, the influence of temperature can be effectively reduced, thereby improving the measurement accuracy.
[0019] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A grating ruler for an inkjet printer, characterized in that, include: Mounting plate (5), the top of which is fixedly connected to a fixing plate (4); A cleaning component is provided in front of a fixed plate (4). The cleaning component includes a servo motor (1) that is detachably installed on the left side of the fixed plate (4). A transmission screw (19) is fixedly connected to the output end of the servo motor (1). A moving block (22) is threadedly installed on the outer wall of the transmission screw (19). A limit rod (21) is movably provided through the surface of the moving block (22). A transmission block (10) is fixedly connected to the front end face of the moving block (22). The bottom of the transmission block (10) is fixedly connected to a transmission plate (2), and an installation groove (20) is provided on the outer wall of the transmission plate (2). An installation block (12) is movably arranged inside the installation groove (20).
2. A grating ruler for an inkjet printer according to claim 1, characterized in that: The mounting block (12) has a fastening screw hole (13) on its outer wall, and a fastening screw (11) is threaded on the inner wall of the fastening screw hole (13). A wiping plate (14) is fixedly connected to one end of the mounting block (12) near the mounting plate (5).
3. A grating ruler for an inkjet printer according to claim 1, characterized in that: The front end face of the mounting plate (5) is fixedly connected to a U-shaped frame (6), and the front end face of the U-shaped frame (6) is provided with a placement groove (18). A second magnetic plate (17) is fixedly installed on both sides inside the placement groove (18).
4. A grating ruler for an inkjet printer according to claim 3, characterized in that: The front end face of the second magnetic plate (17) is magnetically connected to the first magnetic plate (16), and the two first magnetic plates (16) are fixedly connected to the grating ruler body (3). The front end face of the first magnetic plate (16) is fixedly connected to the pull block (15).
5. A grating ruler for an inkjet printer according to claim 3, characterized in that: The rear end face of the C-shaped frame (6) is fixedly connected with a heat-conducting fin (9), and there are two heat-conducting fins (9). The heat-conducting fins (9) are made of aluminum alloy.
6. A grating ruler for an inkjet printer according to claim 1, characterized in that: Multiple micro motors (7) are fixedly installed on the rear end face of the mounting plate (5), and a cooling fan (8) is fixedly connected to the output end of the micro motor (7).