A thermal foaming printer printing unit adjustment mechanism
Patent Information
- Application Number
- CN202522501562.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-25
- Publication Date
- 2026-09-08
- Estimated Expiration
- 2035-11-25
AI Technical Summary
[0004]解决的技术问题：本实用新型的目的在于提供一种热发泡打印机打印单元调节机构，以解决上述背景技术中提出的现有的热发泡打印机多采用单一维度调节结构，难以满足复杂打印场景下对多维度精准调节的需求的问题
[0009] Beneficial Effects: Compared with existing technologies, this utility model provides a printing unit adjustment mechanism for a thermal inkjet printer. This mechanism has a unique structure and is easy to use. By setting up a two-dimensional adjustment mechanism (lifting component + telescopic component) and a worm gear angle adjustment structure, the printing unit can be adjusted in three dimensions: height, longitudinal distance, and angle. All adjustment actions are automatically controlled through the linkage of servo motors, electric actuators, servo motors, and the printer control system, eliminating the need for manual intervention. This solves the problem of existing mechanisms having only one adjustment dimension and relying on manual adjustment, thus improving adjustment efficiency and accuracy. Through the flexible control of the three adjustment dimensions by the control system, this mechanism can adapt to printing media of different thicknesses (such as plain paper, thick cardstock, and photo paper), as well as different printing content's position and angle correction requirements, greatly improving the applicability and printing quality of the thermal inkjet printer.
Smart Images
Figure CN224726621U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of printing equipment technology, specifically to an adjustment mechanism for the printing unit of a thermal inkjet printer. Background Technology
[0002] Thermal inkjet printers are widely used in document printing, image output and other fields due to their advantages such as high printing accuracy and low cost. However, most existing thermal inkjet printers adopt a single-dimensional adjustment structure, such as only being able to adjust the height or only the angle, which makes it difficult to meet the needs of multi-dimensional precise adjustment in complex printing scenarios.
[0003] Therefore, it is necessary to propose a printing unit adjustment mechanism for a thermal inkjet printer to solve the above problems. Utility Model Content
[0004] Technical problem to be solved: The purpose of this utility model is to provide a printing unit adjustment mechanism for a thermal inkjet printer, so as to solve the problem mentioned in the background art that existing thermal inkjet printers mostly adopt a single-dimensional adjustment structure, which is difficult to meet the needs of multi-dimensional precise adjustment in complex printing scenarios.
[0005] Technical Solution: To achieve the above objectives, this utility model provides the following technical solution: A printing unit adjustment mechanism for a thermal inkjet printer includes a base plate. A two-dimensional adjustment mechanism is provided on the top of the base plate. A mounting box is fixedly installed at the output end of the two-dimensional adjustment mechanism. A rotating shaft is rotatably installed longitudinally inside the mounting box. One end of the rotating shaft passes through the mounting box and is fixedly installed with a printing unit. A worm gear is fixedly fitted outside the rotating shaft. A worm is rotatably installed in the mounting box below the worm gear. The worm gear and the worm mesh and drive each other. A servo motor is fixedly installed inside the mounting box. The output shaft of the servo motor is fixedly connected to the worm. Both the two-dimensional adjustment mechanism and the servo motor are controlled and connected to the printer's control system.
[0006] Preferably, a support plate is fixedly installed on the top of the base plate, a U-shaped plate is fixedly installed on one side of the support plate, an upper connecting plate is fixedly installed on the top of the U-shaped plate, and a lower connecting plate is fixedly installed on the bottom.
[0007] Preferably, the two-dimensional adjustment mechanism includes a lifting component and a telescopic component arranged longitudinally. The lifting component includes a servo motor fixedly installed on the top of the upper connecting plate. Slide rails are fixedly installed on both sides of the U-shaped plate. The same slider is slidably installed on the two slide rails along the vertical direction. The slider has a screw hole, and a screw rod is threaded into the screw hole. The lower end of the screw rod is rotatably connected to the lower connecting plate through a bearing seat, and the upper end passes through the upper connecting plate and is driven by the servo motor.
[0008] Preferably, the telescopic assembly includes an L-shaped plate I fixedly mounted on the slider, an electric actuator fixedly mounted on the L-shaped plate I along the longitudinal direction, an L-shaped plate II fixedly mounted on the output end of the electric actuator, a fixing plate fixedly mounted on the top plate of the L-shaped plate II, and a mounting box fixedly mounted on the top of the fixing plate.
[0009] Beneficial Effects: Compared with existing technologies, this utility model provides a printing unit adjustment mechanism for a thermal inkjet printer. This mechanism has a unique structure and is easy to use. By setting up a two-dimensional adjustment mechanism (lifting component + telescopic component) and a worm gear angle adjustment structure, the printing unit can be adjusted in three dimensions: height, longitudinal distance, and angle. All adjustment actions are automatically controlled through the linkage of servo motors, electric actuators, servo motors, and the printer control system, eliminating the need for manual intervention. This solves the problem of existing mechanisms having only one adjustment dimension and relying on manual adjustment, thus improving adjustment efficiency and accuracy. Through the flexible control of the three adjustment dimensions by the control system, this mechanism can adapt to printing media of different thicknesses (such as plain paper, thick cardstock, and photo paper), as well as different printing content's position and angle correction requirements, greatly improving the applicability and printing quality of the thermal inkjet printer. Attached Figure Description
[0010] Figure 1 This is a three-dimensional front view schematic diagram of the structure of this utility model; Figure 2 This is a three-dimensional side view of the structure of this utility model; Figure 3 This is a front view schematic diagram of the structure of this utility model; Figure 4 This is a cross-sectional schematic diagram of the structure of this utility model; Figure 5 This utility model Figure 4 Enlarged schematic diagram of the structure in area A.
[0011] In the diagram: 1. Base plate; 2. Support plate; 3. U-shaped plate; 4. Upper connecting plate; 5. Lower connecting plate; 6. Slide rail; 7. Slider; 8. Servo motor; 9. L-shaped plate I; 10. Electric actuator; 11. L-shaped plate II; 12. Fixing plate; 13. Mounting box; 14. Rotating shaft; 15. Worm gear; 16. Worm; 17. Servo motor; 18. Printing unit; 19. Screw. Detailed Implementation
[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0013] Example 1: This Example 1 provides a printing unit adjustment mechanism for a thermal inkjet printer. It is a direct improvement on an existing printer and has a unique structure. Please refer to [link / reference]. Figure 1-5As shown, the system includes a base plate 1, which serves as the mounting foundation for the entire adjustment mechanism. It is used to fix the mechanism to the frame of the thermal inkjet printer, ensuring the stability of the entire mechanism during operation. A two-dimensional adjustment mechanism is located on the top of the base plate 1. This mechanism allows for positional adjustment of the printing unit in both the vertical and height directions. A mounting box 13 is fixedly installed at the output end of the two-dimensional adjustment mechanism. The mounting box 13 provides protection and a mounting carrier for the internal components. A rotating shaft 14 is rotatably mounted longitudinally within the mounting box 13. The rotating shaft 14 is rotatably connected to the two side walls of the mounting box 13 via bearings, ensuring coaxiality and smoothness during rotation. One end of the rotating shaft 14 passes through the mounting box 13 and is fixedly mounted with a printing unit 18. The printing unit 18 is the core printing component of the thermal inkjet printer, rotating synchronously with the rotating shaft 14 to achieve angle adjustment.
[0014] A worm gear 15 is fixedly mounted on the outside of the rotating shaft 14. The worm gear 15 and the rotating shaft 14 are connected by a key or interference fit to ensure that the rotating shaft 14 can rotate synchronously when the worm gear 15 rotates. A worm 16 is rotatably mounted in the mounting box 13 below the worm gear 15. The worm 16 is also rotatably connected to the inner wall of the mounting box 13 through a bearing. The worm gear 15 and the worm 16 mesh and drive each other. Utilizing the self-locking characteristic of the worm gear drive, the angle of the printing unit 18 can be kept stable when the servo motor 17 stops working, avoiding angle deviation caused by external forces. The mounting box 13 is fixedly mounted with... There is a servo motor 17, which is fixed to the inner wall of the mounting box 13 by bolts. The output shaft of the servo motor 17 is fixedly connected to the worm gear 16. The servo motor 17 serves as the power source for angle adjustment and can precisely control the rotation angle of the worm gear 16. In turn, the worm wheel 15 drives the rotating shaft 14 and the printing unit 18 to achieve fine-tuning of the angle. Both the two-dimensional adjustment mechanism and the servo motor 17 are connected to the printer's control system. The control system can automatically send control signals to the two-dimensional adjustment mechanism and the servo motor 17 according to printing requirements (such as the thickness of the printing medium, the accuracy requirements of the printing content, etc.) to achieve fully automated adjustment.
[0015] Furthermore, a support plate 2 is fixedly installed on the top of the base plate 1. The support plate 2 is fixed to the base plate 1 by welding or bolts, providing installation support for subsequent components. A U-shaped plate 3 is fixedly installed on one side of the support plate 2. The opening of the U-shaped plate 3 faces away from the support plate 2. The U-shaped plate 3 is fixed to the support plate 2 by bolts. Its two side walls are set parallel to ensure the parallelism of the subsequent slide rail 6 installation. An upper connecting plate 4 is fixedly installed on the top of the U-shaped plate 3, and a lower connecting plate 5 is fixedly installed on the bottom. Both the upper connecting plate 4 and the lower connecting plate 5 are fixed to the U-shaped plate 3 by bolts. The upper connecting plate 4 and the lower connecting plate 5 are parallel and horizontally set, providing stable installation support for the screw 19 of the lifting component.
[0016] Furthermore, the two-dimensional adjustment mechanism includes a lifting component and a telescopic component arranged longitudinally. The lifting component is used to achieve precise adjustment of the printing unit 18 in the vertical (height direction). It includes a servo motor 8 fixedly installed on the top of the upper connecting plate 4. The servo motor 8 is fixed to the upper connecting plate 4 through a motor mount. The servo motor 8 is a servo motor with position feedback function, which can accurately control the number of rotations and speed of the output shaft, thereby ensuring the height adjustment accuracy. Slide rails 6 are fixedly installed on both sides of the U-shaped plate 3. The slide rails 6 are arranged vertically, and the two slide rails 6 are parallel and symmetrically distributed. The slide rails 6 are fixed to the side walls of the U-shaped plate 3 by bolts. The same slider 7 is slidably installed on the two slide rails 6 in the vertical direction. The slider 7 has grooves on both sides that match the slide rails 6. The grooves and the slide rails 6 are fitted with a clearance, which ensures that the slider 7 can slide smoothly along the slide rails 6 and avoids lateral displacement during the sliding process.
[0017] The slider 7 has a threaded hole, and a screw 19 is threaded into the inner thread of the threaded hole. The screw 19 is vertically positioned, and its external thread matches the internal thread of the threaded hole. It adopts a trapezoidal thread or ball thread structure to reduce friction loss during thread transmission and improve transmission efficiency and adjustment accuracy. The lower end of the screw 19 is rotatably connected to the lower connecting plate 5 through a bearing seat. The bearing seat is fixed to the lower connecting plate 5 by bolts to ensure the stability of the screw 19 when rotating. The upper end of the screw 19 passes through the upper connecting plate 4 and is connected to the servo motor 8. Specifically, the two can be fixedly connected by a coupling. When the servo motor 8 is working, its output shaft drives the screw 19 to rotate synchronously. The screw 19 drives the slider 7 to move up and down along the slide rail 6 through thread transmission, thereby driving the subsequent telescopic component and printing unit 18 to achieve height adjustment.
[0018] The telescopic assembly is used to achieve precise longitudinal adjustment of the printing unit 18. It includes an L-shaped plate I9 fixedly mounted on the slider 7, which is bolted to the side wall of the slider 7, with its horizontal section extending longitudinally. An electric actuator 10 is fixedly mounted longitudinally on the L-shaped plate I9. The electric actuator 10 is an electric cylinder or a high-precision linear actuator with position feedback, capable of precisely controlling the extension length of its output end. The cylinder body of the electric actuator 10 is bolted to the horizontal section of the L-shaped plate I9, and the output end of the electric actuator 10 is longitudinally positioned. An L-shaped plate II is fixedly mounted on the output end of the electric actuator 10. 11. The vertical section of L-shaped plate II 11 is fixed to the output end of electric actuator 10 by bolts, and its horizontal section extends laterally. A fixing plate 12 is fixedly installed on the top plate of L-shaped plate II 11. The fixing plate 12 is fixed to the horizontal section of L-shaped plate II 11 by bolts. The fixing plate 12 is set horizontally to provide a stable mounting surface for mounting box 13. Mounting box 13 is fixedly installed on the top of fixing plate 12. The two are fixedly connected by bolts to ensure that when the telescopic component moves, mounting box 13 can move synchronously with fixing plate 12 along the longitudinal direction, thereby driving printing unit 18 to achieve longitudinal distance adjustment.
[0019] Working principle: When using the printing unit adjustment mechanism of this thermal inkjet printer for printing, the device is first set on one side of the conveyor belt, and then a control signal is sent to the servo motor 8 of the lifting component. After receiving the signal, the servo motor 8 starts, and its output shaft drives the screw 19 to rotate around its own axis. Since the screw 19 and the slider 7 are connected by a threaded transmission, and the slider 7 is restricted by the slide rails 6 on both sides to move only vertically, the rotation of the screw 19 is converted into the vertical linear movement of the slider 7 along the slide rails 6. During the movement of the slider 7, the telescopic component, the mounting box 13 and the printing unit 18 move up and down synchronously until the printing unit 18 reaches the preset height that matches the current printing medium. The control system then controls the servo motor 8 to stop working, completing the height adjustment.
[0020] After the height adjustment is completed, the control system sends a control signal to the electric push rod 10 of the telescopic component according to the distance between the printing unit 18 and the printing medium. After receiving the signal, the electric push rod 10 starts, and its output end extends or retracts longitudinally. The output end of the electric push rod 10 drives the L-shaped plate II 11, the fixing plate 12, the mounting box 13 and the printing unit 18 to move synchronously longitudinally until the printing unit 18 reaches the preset longitudinal position (ensuring that the printed content can accurately fall on the target area of the printing medium). The control system then controls the electric push rod 10 to stop working, completing the longitudinal distance adjustment.
[0021] After the longitudinal distance adjustment is completed, if there are requirements such as tilt correction of printed content or alignment of multi-color print head angles, the control system sends a control signal to the servo motor 17 in the mounting box 13. After receiving the signal, the servo motor 17 starts, and its output shaft drives the worm 16 to rotate around its own axis. Since the worm 16 meshes with the worm wheel 15, the rotation of the worm 16 is converted into the rotation of the worm wheel 15. The worm wheel 15 drives the rotating shaft 14, which is fixedly connected to it, to rotate synchronously. The rotating shaft 14 then drives the printing unit 18 to rotate around the axis of the rotating shaft 14, changing the angle between the printing unit 18 and the horizontal plane.
[0022] When the printing unit 18 reaches the preset angle (for example, when correcting the 0.5° tilt of the printed content, the printing unit 18 is controlled to rotate 0.5° in the opposite direction), the control system controls the servo motor 17 to stop working. Due to the self-locking characteristic of the worm gear transmission, after the servo motor 17 stops, the angle of the printing unit 18 remains stable and will not shift due to external forces, thus completing the angle adjustment. During the entire printing process, if it is necessary to readjust the position or angle of the printing unit 18 according to the change of printing media or adjustment of printing content, the control system can repeat the above adjustment steps to achieve automated and precise dynamic adjustment, ensuring that the printing quality remains stable at all times.
[0023] 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 of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A printing unit adjustment mechanism for a thermal inkjet printer, comprising a base plate (1), characterized in that: The top of the base plate (1) is provided with a two-dimensional adjustment mechanism. The output end of the two-dimensional adjustment mechanism is fixedly installed with a mounting box (13). A rotating shaft (14) is rotatably installed in the mounting box (13) along the longitudinal direction. One end of the rotating shaft (14) passes through the mounting box (13) and is fixedly installed with a printing unit (18). A worm gear (15) is fixedly fitted on the outside of the rotating shaft (14). A worm (16) is rotatably installed in the mounting box (13) below the worm gear (15). The worm gear (15) and the worm (16) mesh and drive each other. A servo motor (17) is fixedly installed in the mounting box (13). The output shaft of the servo motor (17) is fixedly connected to the worm (16). The two-dimensional adjustment mechanism and the servo motor (17) are both connected to the control system of the printer.
2. The adjusting mechanism for the printing unit of a thermal inkjet printer according to claim 1, characterized in that: A support plate (2) is fixedly installed on the top of the base plate (1), and a U-shaped plate (3) is fixedly installed on one side of the support plate (2). An upper connecting plate (4) is fixedly installed on the top of the U-shaped plate (3), and a lower connecting plate (5) is fixedly installed on the bottom.
3. The adjusting mechanism for the printing unit of a thermal inkjet printer according to claim 2, characterized in that: The two-dimensional adjustment mechanism includes a lifting component and a telescopic component arranged along the longitudinal direction. The lifting component includes a servo motor (8) fixedly installed on the top of the upper connecting plate (4). Slide rails (6) are fixedly installed on both sides of the U-shaped plate (3). The same slider (7) is slidably installed on the two slide rails (6) along the vertical direction. The slider (7) has a screw hole. A screw rod (19) is threaded in the screw hole. The lower end of the screw rod (19) is rotatably connected to the lower connecting plate (5) through a bearing seat, and the upper end passes through the upper connecting plate (4) and is connected to the servo motor (8) for transmission.
4. The adjusting mechanism for the printing unit of a thermal inkjet printer according to claim 3, characterized in that: The telescopic assembly includes an L-shaped plate I (9) fixedly installed on the slider (7), an electric push rod (10) fixedly installed on the L-shaped plate I (9) along the longitudinal direction, an L-shaped plate II (11) fixedly installed at the output end of the electric push rod (10), a fixing plate (12) fixedly installed on the top plate of the L-shaped plate II (11), and a mounting box (13) fixedly installed on the top of the fixing plate (12).