Transmission device of shaftless transmission printing machine
By designing cleaning components and an impurity collection system in a shaftless printing press, the problem of ink residue on the roller surface was solved, achieving efficient cleaning of the printing press and improved printing quality.
Patent Information
- Application Number
- CN202520399158.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-10
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-03-10
AI Technical Summary
Ink residue on the roller surface in shaftless printing presses can cause printing quality problems, affecting ink transfer and print quality.
A cleaning assembly including a first scraper, a second scraper, and a cleaning brush was designed, which, together with a collection tube, a guide channel, and a guide tube impurity collection system, uses a servo motor to drive the transmission roller for cleaning, ensuring effective scraping and collection of ink and impurities.
It effectively removes ink residue from the roller surface, ensuring the cleanliness of the printing press and the quality of printing, thus improving the printing effect and the ease of use and maintainability of the equipment.
Smart Images
Figure CN223764033U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of shaftless printing press technology, specifically to a transmission device for a shaftless printing press. Background Technology
[0002] Shaftless printing presses, also known as servo-driven or independent-drive printing presses, are a product of the widespread application of mechanical transmission and electronic technology. The transmission device of this type of printing press abandons the traditional long mechanical shaft and instead uses individual servo motors to drive each printing unit. Each servo motor is equipped with an encoder, which can provide high-precision positioning and speed control. Through the internal virtual electronic axes formed by the program, the electronic axes transmit data through a high-speed fieldbus to achieve precise synchronization of the printing units.
[0003] In the printing process, rollers play a crucial role as the ink transfer medium. They come into direct contact with the ink and, through rotation, evenly distribute the ink onto the printing plate or paper. However, it is precisely this contact that leads to ink residue on the roller surface. When the ink is transferred from the roller to the paper, some ink does not completely detach from the roller but remains on its surface, forming an ink film. This ink film not only affects the subsequent ink transfer effect of the roller but may also cause quality problems in the printed matter, such as uneven ink distribution and color deviation, which are known as ink residue problems. Utility Model Content
[0004] The purpose of this utility model is to provide a transmission device for a shaftless printing press to solve the problems mentioned in the background art.
[0005] To solve the above-mentioned technical problems, this utility model provides a transmission device for a shaftless printing machine, including a housing. The housing contains a first transmission roller, a second transmission roller, and an ink roller arranged inclined from top to bottom. Each of the first, second, and ink rollers is equipped with a rotating column, and each rotating column is connected to a servo motor. The housing also contains a cleaning component, which includes two identical collection tubes located below the outer arc walls of the first and second transmission rollers. Above each collection tube is an upwardly inclined first scraper, with its inclined end abutting against the outer arc walls of the first and second transmission rollers. The lower surface of the first scraper is equipped with an upwardly inclined second scraper, also with its inclined end abutting against the outer arc walls of the first and second transmission rollers. The first scraper has a guide groove extending to its bottom, and the top of the guide groove communicates with the angle between the second and first scrapers.
[0006] Furthermore, fixing blocks are installed at both ends of the lower surface of the second scraper, and several springs are installed on the side of the fixing blocks away from the collection pipe. A cleaning brush that abuts against the outer arc wall of the first and second transmission rollers is installed at the other end of the springs.
[0007] Furthermore, the outer arc walls of both collection tubes are equipped with inclined plates that are respectively inclined downward toward the first drive roller and the second drive roller. The upper surfaces of the inclined plates are hinged with spring hinges to the bottom of the first scraper. In the initial state, the angle between the first scraper and the inclined plate is 45 degrees.
[0008] Furthermore, rotating shafts are installed on both sides of the first scraper, and mounting strips are fixedly connected to the rotating shafts. The top end of the mounting strips is used for fixed connection to the upper surface of the inclined plate.
[0009] Furthermore, both ends of the collecting tube are connected to guide tubes, and both guide tubes are inclined downwards outwards. The shape of the collecting tube and the guide tubes is a semi-cylindrical tube.
[0010] Furthermore, a guide frame is fixedly installed at one end of the guide tube, and a through hole is opened at the end of the guide tube near the guide frame. A filter screen is installed in the through hole, and a vertical drain tube is connected to the through hole. A collection box is connected to the bottom end of the drain tube.
[0011] Furthermore, the collection box has a groove with an opening facing out of the box body, and a collection drawer matching the size of the groove is slidably connected in the groove. A handle is installed on the side of the collection drawer away from the collection box.
[0012] Furthermore, a motor housing is installed inside the housing, and the servo motor is fixedly installed inside the motor housing.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] 1. This utility model, through the setting of the cleaning components, including a first scraper, a second scraper, and a cleaning brush, works together on the outer arc walls of the first and second transmission rollers to effectively scrape away impurities and ink residues, ensuring the cleanliness of the printing press and the printing quality. The design of the cleaning components takes into account elasticity and adaptability. The use of springs and spring hinges allows the scraper and cleaning brush to better fit the surface of the transmission rollers and adapt to their slight changes, ensuring the cleaning effect.
[0015] 2. This utility model constitutes an impurity collection system through components such as a collection pipe, a guide channel, a guide pipe, and a collection box. It can efficiently collect scraped impurities and ink. The filter design prevents large particles from entering the guide pipe, protecting the normal operation of subsequent processing equipment. The collection drawer makes it convenient for users to remove and clean impurities, improving the ease of use and maintainability of the device. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the main structure of the transmission device of a shaftless printing press;
[0017] Figure 2 This is a schematic diagram of the structure of the guide frame connecting the guide tube in the transmission device of a shaftless printing press;
[0018] Figure 3 This is a schematic diagram of the structure of a shaftless printing press where the first scraper connects to the second scraper and the inclined plate in the transmission device.
[0019] Figure 4 This is a schematic diagram of the structure of the first scraper and the guide groove in the transmission device of a shaftless printing press;
[0020] Figure 5 This is a schematic diagram of the structure of a shaftless printing press where the first drive roller, the second drive roller, and the ink roller are connected to a servo motor.
[0021] Figure 6 for Figure 2 Enlarged structural diagram at point A in the middle.
[0022] In the picture:
[0023] 1. Housing; 2. Collection box; 3. Guide frame; 4. First drive roller; 5. Second drive roller; 6. Ink roller; 7. Collection drawer; 8. Handle; 9. Servo motor; 10. Motor box; 11. Collection tube; 12. Guide tube; 13. Filter screen; 14. Drain tube; 15. First scraper; 16. Second scraper; 17. Fixing block; 18. Cleaning brush; 19. Spring; 20. Rotating shaft; 21. Spring hinge; 22. Guide groove; 23. Inclined plate. Detailed Implementation
[0024] 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.
[0025] Please see Figure 1-6 This utility model provides a technical solution:
[0026] See Figure 1 , Figure 3 and Figure 4As shown, a transmission device for a shaftless printing press includes a housing 1. Inside the housing 1 are a first transmission roller 4, a second transmission roller 5, and an ink roller 6 arranged from top to bottom at an angle. Each of the first transmission roller 4, the second transmission roller 5, and the ink roller 6 is equipped with a rotating column, and each rotating column is connected to a servo motor 9. The housing 1 is equipped with a cleaning component, which includes two collection tubes 11 of the same shape. The two collection tubes 11 are located below the outer arc walls of the first transmission roller 4 and the second transmission roller 5, respectively. Above each of the two collection tubes 11, a first scraper 15 is installed, which is inclined upward and whose inclined end abuts against the outer arc walls of the first transmission roller 4 and the second transmission roller 5. A second scraper 16 is installed on the lower surface of the first scraper 15, which is inclined upward and whose inclined end abuts against the outer arc walls of the first transmission roller 4 and the second transmission roller 5. The first scraper 15 has a guide groove 22 extending to the bottom of the first scraper 15. The top of the guide groove 22 is connected to the angle between the second scraper 16 and the first scraper 15.
[0027] In the specific implementation process, the collection pipe 11 is used to collect the scraped impurities or ink. The first scraper 15 is installed at an upward inclination, and its inclined end abuts against the outer arc wall of the transmission roller, which is used to initially scrape off impurities. The second scraper 16 is installed on the lower surface of the first scraper 15, also inclined upward, and abuts against the outer arc wall of the first transmission roller 4 and the second transmission roller 5, which is used to further scrape off residues. The guide groove 22 is opened on the first scraper 15, starting from the angle between the second scraper 16 and the first scraper 15, and extending to the bottom of the first scraper 15, which is used to guide the impurities or ink scraped off by the second scraper 16 into the collection pipe 11.
[0028] See Figure 3 As shown, fixing blocks 17 are installed at both ends of the lower surface of the second scraper 16. Several springs 19 are installed on the side of the fixing blocks 17 away from the collection pipe 11. A cleaning brush 18 is installed at the other end of the springs 19, which abuts against the outer arc wall of the first drive roller 4 and the second drive roller 5. In the specific implementation, the fixing blocks 17 are used to connect the springs 19 and the cleaning brush 18, ensuring that they can act stably on the outer arc wall of the drive roller. The springs 19 are installed on the side of the fixing blocks 17 away from the collection pipe 11, providing the necessary elasticity and pressure for the cleaning brush 18, so that it can better fit against the outer arc wall of the first drive roller 4 and the second drive roller 5. The cleaning brush 18 abuts against the outer arc wall of the first drive roller 4 and the second drive roller 5, and is used to further clean the surface of the first drive roller 4 and the second drive roller 5 after the first scraper 15 and the second scraper 16, ensuring that the residual ink is wiped off after the adhered ink is scraped off, so as to ensure printing quality.
[0029] See Figure 3 as well as Figure 6As shown, the outer arc walls of the two collecting pipes 11 are each equipped with inclined plates 23 that are inclined downward toward the first transmission roller 4 and the second transmission roller 5, respectively. The upper surfaces of the inclined plates 23 are hinged to the bottom of the first scraper 15 with spring hinges 21. In the initial state, the angle between the first scraper 15 and the inclined plates 23 is 45 degrees. Rotating shafts 20 are installed on both sides of the first scraper 15. The rotating shafts 20 are fixedly connected with mounting strips. The top of the mounting strips is used for fixed connection to the upper surface of the inclined plates 23. In the specific implementation process, in the initial state, the first scraper 15 and the inclined plate 23 form a 45-degree angle. This ensures good contact between the first scraper 15 and the second scraper 16 and the first transmission roller 4 and the second transmission roller 5, while also allowing the first scraper 15 and the second scraper 16 to have a certain elastic deformation when subjected to pressure, thereby adapting to the slight changes on the surfaces of the first transmission roller 4 and the second transmission roller 5. The rotating shaft 20 is fixedly connected to the mounting strip, and the top end of the mounting strip is fixedly connected to the upper surface of the inclined plate 23. This design allows the first scraper 15 to not only be connected to the inclined plate 23 via the spring hinge 21, but also to rotate within a certain range on the mounting strip via the rotating shaft 20, thereby further enhancing the adaptability and flexibility of the scraper. The spring hinge 21 ensures that the first scraper 15, by utilizing its reset capability, can always maintain contact with the first transmission roller 4 and the second transmission roller 5.
[0030] See Figure 1 and Figure 2 As shown, the two ends of the collection pipe 11 are connected to the guide pipes 12. Both guide pipes 12 are inclined downwards outwards. The shape of the collection pipe 11 and the guide pipe 12 is a semi-cylindrical tube. A guide frame 3 is fixedly installed at one end of the guide pipe 12. A through hole is opened at the end of the guide pipe 12 near the guide frame 3. A filter screen 13 is installed in the through hole. A vertical drain pipe 14 is connected in the through hole. The bottom end of the drain pipe 14 is connected to the collection box 2. A groove with an opening facing outwards from the box 1 is opened in the collection box 2. A collection drawer 7 matching the size of the groove is slidably connected in the groove. A handle 8 is installed on the side of the collection drawer 7 away from the collection box 2. In the specific implementation process, the guide tube 12 is a semi-cylindrical tube with both ends inclined downwards towards the outside of the guide tube 12 to ensure that impurities or ink can flow out smoothly. A guide frame 3 is fixedly installed at one end of the guide tube 12. The guide frame 3 is installed at the end of the guide tube 12 to support and fix the guide tube 12 and prevent leakage at the end of the guide tube 12. The filter screen 13 is used to filter impurities and prevent large particles from entering the guide tube 14. The guide tube 14 is used to introduce the impurities or ink that have passed through the filter screen 13 into the collection box 2. The collection box 2 is used to hold the scraped ink. A handle 8 is installed on one side of the collection drawer 7 for easy removal and recycling by the user.
[0031] See Figure 1 and Figure 5As shown, a motor box 10 is installed inside the housing 1, and the servo motor 9 is fixedly installed inside the motor box 10. In the specific implementation process, the motor box 10 protects the servo motor 9 and prevents ink from spraying in and contaminating the servo motor 9. The rotating column installed on the first transmission roller 4, the second transmission roller 5, and the ink roller 6 is rotatably connected to the inner wall of the housing 1 at one end through a bearing.
[0032] Working principle:
[0033] Step 1: The servo motor 9 is installed inside the motor housing 10 and is connected to the first drive roller 4, the second drive roller 5, and the ink roller 6 via a rotating column. When the servo motor 9 starts, it drives the rotating column to rotate, thereby driving the first drive roller 4, the second drive roller 5, and the ink roller 6 to move at a predetermined speed and direction. The printing material is fed between the first drive roller 4 and the second drive roller 5. Through the clamping and conveying by the two, a continuous printing process is achieved. The ink roller 6 is responsible for evenly applying ink to the printing material to complete the transfer of the printed pattern. When the printing material passes through the drive roller, the inclined ends of the first scraper 15 and the second scraper 16 abut against the outer arc wall of the drive roller, initially scraping off the ink and impurities adhering to the surface of the drive roller. The cleaning brush 18 below the second scraper 16, under the action of the spring 19, makes close contact with the surface of the drive roller to further clean the drive roller and ensure that the ink is completely scraped off. The scraped ink and impurities flow into the collection pipe 11 through the guide groove 22 and are then discharged through the guide pipe 12.
[0034] Step 2: The filter screen 13 at the end of the guide pipe 12 can filter out larger impurity particles, preventing them from entering the diversion pipe 14. The ink and fine impurities passing through the filter screen 13 are introduced into the collection box 2 by the diversion pipe 14 and finally deposited in the collection drawer 7. The user can easily remove the collection drawer 7 through the handle 8 for cleaning and recycling. The first scraper 15 and the second scraper 16 are connected to the inclined plate 23 through the spring hinge 21 and have a certain degree of rotational flexibility under the action of the rotating shaft 20. The motor box 10 not only protects the servo motor 9 from ink contamination, but also improves the safety and reliability of the entire transmission device.
Claims
1. A transmission device of a shaftless printing machine, comprising a box (1), a first transmission roller (4), a second transmission roller (5) and an ink roller (6) are arranged in the box (1) in a slanting manner from top to bottom, the first transmission roller (4), the second transmission roller (5) and the ink roller (6) are all installed with rotating columns, and each rotating column is drivingly connected with a servo motor (9), characterized in that, The box (1) is internally provided with a cleaning assembly, the cleaning assembly comprises two collecting pipes (11) which are identical in shape, the two collecting pipes (11) are respectively located below the outer arc walls of the first transmission roller (4) and the second transmission roller (5), the upper portions of the two collecting pipes (11) are both provided with a first scraper (15) which is inclined upward and the inclined end of which abuts against the outer arc wall of the first transmission roller (4) and the second transmission roller (5), the lower surface of the first scraper (15) is provided with a second scraper (16) which is inclined upward and the inclined end of which abuts against the outer arc wall of the first transmission roller (4) and the second transmission roller (5), the first scraper (15) is provided with a flow guide groove (22) which penetrates to the bottom of the first scraper (15), and the top end of the flow guide groove (22) is in communication with the included angle between the second scraper (16) and the first scraper (15).
2. A shaftless drive transmission for a printing press as claimed in claim 1, characterized in that: The lower surface of the second scraper (16) is provided with a fixed block (17) at both ends, the side of the fixed block (17) away from the collecting pipe (11) is provided with a plurality of springs (19), the other end of the spring (19) is provided with a cleaning brush (18) which abuts against the outer arc wall of the first transmission roller (4) and the second transmission roller (5).
3. A shaftless drive transmission for a printing press as claimed in claim 2, characterized in that: The outer arc walls of the two collecting pipes (11) are both provided with an inclined plate (23) which is inclined downward towards the first transmission roller (4) and the second transmission roller (5), the upper surface of the inclined plate (23) is hingedly connected with the bottom of the first scraper (15) at both sides, and the included angle between the first scraper (15) and the inclined plate (23) is 45 degrees in the initial state of the spring hinge (21).
4. A shaftless drive transmission for a printing press as claimed in claim 3 wherein: The two sides of the first scraper (15) are provided with rotating shafts (20), the rotating shafts (20) are fixedly connected with mounting strips, and the top ends of the mounting strips are used for fixedly connecting the upper surface of the inclined plate (23).
5. A shaftless drive transmission for a printing press as claimed in claim 4 wherein: Both ends of the collecting pipe (11) are communicated with flow guide pipes (12), the two flow guide pipes (12) are both inclined downward outside the flow guide pipe (12), and the shapes of the collecting pipe (11) and the flow guide pipe (12) are both semicylindrical pipes.
6. A shaftless drive transmission for a printing press as claimed in claim 5 wherein: One end of the flow guide pipe (12) is fixedly provided with a flow guide frame (3), the end of the flow guide pipe (12) close to the flow guide frame (3) is provided with a through hole, the through hole is provided with a filter screen (13), and the through hole is communicated with a vertical drainage pipe (14), and the bottom end of the drainage pipe (14) is communicated with a collecting box (2).
7. A shaftless drive transmission for a printing press as claimed in claim 6, characterized in that: The collecting box (2) is internally provided with a groove with an opening facing the outside of the box (1), the groove is slidably connected with a collecting drawer (7) which is matched with the size of the groove, and the side of the collecting drawer (7) away from the collecting box (2) is provided with a handle (8).
8. A shaftless drive transmission for a printing press as claimed in claim 7, characterized in that: The box (1) is internally provided with a motor box (10), and the servo motor (9) is fixedly installed in the motor box (10).