Electric plate winding mechanism for water-based printing press

Abstract

This invention relates to an electric plate-winding mechanism for a water-based printing press. A plate-winding shaft is embedded on the outer periphery of the printing cylinder, and a printing plate is wound on the printing cylinder. A main support shaft passes through the middle of the printing cylinder, and support sleeves are rotatably connected to both ends of the main support shaft. A support frame is fixedly connected to the lower side of the support sleeve. A drive gear is rotatably connected to one of the support sleeves. A transmission gear is provided on one side of the drive gear, and a plate-winding gear is provided on one side of the transmission gear. The plate-winding gear is fixedly connected to the plate-winding shaft through a first transmission shaft. A limiting component for limiting the second transmission shaft is installed inside the printing cylinder. Positioning components for positioning the drive gear are installed on both sides of the drive gear. When the printing plate needs to be changed, the limiting component and the second transmission shaft are separated, and the positioning components bring the drive gear and the support sleeves to a relative stop. The main support shaft and the printing cylinder are rotated in the reverse direction by the water-based printing press, thereby quickly changing the printing plate.

Description

Technical Field

[0001] This invention relates to the technical field of carton printing machines, and more specifically to an electric plate winding mechanism for a water-based printing machine. Background Technology

[0002] Corrugated cardboard is die-cut, creasing, and stapling or gluing to create corrugated boxes. Corrugated boxes are the most widely used packaging product, consistently ranking first in usage among all packaging products. This includes calcium-plastic corrugated boxes.

[0003] Patent document CN111016426B discloses an automatic plate-winding device for a corrugated cardboard box printing machine, including a printing roller, a limiting sleeve, and a drive box. The printing roller has a shaft groove, and a plate-hanging shaft is rotatably connected within the shaft groove. The surface of the printing roller is covered with a printing plate. A central shaft is fixedly inserted into the printing roller. A plate-hanging gear is fixedly inserted into one end of the plate-hanging shaft. The limiting sleeve rotates on the printing machine frame. The drive box is fixedly mounted on the printing machine frame and contains a drive motor. An output shaft is fixedly connected to the output end of the drive motor, and a drive gear is fixedly inserted into the output shaft. A first threaded shaft is symmetrically rotatably connected to the inner wall of the drive box. The beneficial effect of this patent is that by rotating the printing roller 90 degrees using the printing machine, the plate-hanging gear revolves around the plate-winding gear. Due to the meshing action of the two, the plate-hanging gear drives the plate-hanging shaft to rotate, thereby automatically winding and locking the printing plate.

[0004] The above-mentioned device has the following shortcomings: it requires precise rotation during use, is not easy to operate, requires certain work experience and adjustment ability, is not easy to wind up, and requires the use of magnetic components for adjustment, which can easily lead to failure of the adjustment process due to the influence of temperature or distance. At the same time, the above-mentioned device cannot maintain a stable winding force at the end of winding, which can easily lead to unsatisfactory winding effect and poor winding state. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned problems and shortcomings by providing an electric plate winding mechanism for a water-based printing press, thereby improving overall work efficiency.

[0006] The technical problem solved by this invention is:

[0007] (1) The above device requires precise rotation during use, is not easy to operate, requires certain work experience and adjustment ability, and is not easy to rewind.

[0008] (2) The above device requires the use of magnetic components during adjustment, which can easily lead to adjustment failure due to the influence of temperature or distance;

[0009] (3) The above device cannot maintain a stable winding force at the end of winding, which can easily lead to unsatisfactory winding effect and poor winding state.

[0010] The objective of this invention can be achieved through the following technical solution: an electric plate winding mechanism for a water-based printing press, comprising a printing cylinder, a plate winding shaft embedded on the outer periphery of the printing cylinder, slots on the outer periphery of both the printing cylinder and the plate winding shaft, a printing plate wound on the printing cylinder, and the printing cylinder and the plate winding shaft respectively connecting to the two ends of the printing plate through the slots, side sealing plates installed at both ends of the printing cylinder, a main support shaft connected to a drive motor of the water-based printing press passing through the middle of the printing cylinder, the main support shaft, the printing cylinder, and the side sealing plates being coaxial, support sleeves rotatably connected to both ends of the main support shaft, and a fixed connection on the lower side of the support sleeve. There is a support frame for docking with a water-based printing press. One of the support sleeves has a drive gear rotatably connected to one end near the printing cylinder. A transmission gear is provided on one side of the drive gear, and a plate winding gear is provided on one side of the transmission gear. The transmission gear meshes with the drive gear and the plate winding gear respectively. The plate winding gear is fixedly connected to the plate winding shaft through a first transmission shaft. The transmission gear is rotatably connected to the side sealing plate through a second transmission shaft, and the second transmission shaft passes through the side sealing plate. A limiting component for limiting the second transmission shaft is installed inside the printing cylinder. Positioning components for positioning the drive gear are installed on both sides of the drive gear.

[0011] As a further embodiment of the invention, the positioning assembly includes a first transmission plate and a second transmission plate. The first transmission plate is disposed between the side sealing plate and the drive gear. The first transmission plate is movably sleeved on the main support shaft. Several locking crossbars that are evenly distributed at equal angles are fixedly connected on the main support shaft between the side sealing plate and the drive gear. The first transmission plate rotates synchronously with the main support shaft through the locking crossbars. A first spring is movably disposed between the first transmission plate and the side sealing plate and on the outer periphery of the main support shaft. The two ends of the first spring abut against the first transmission plate and the side sealing plate, respectively.

[0012] As a further embodiment of the invention, the second transmission plate is movably sleeved on the support sleeve where the drive gear is located, and the second transmission plate is located between the drive gear and the support frame. Mounting brackets are installed on both sides of the support frame near the drive gear, and cylinders are installed on the mounting brackets. The telescopic ends of the cylinders are fixedly connected to the second transmission plate through connecting plates.

[0013] As a further aspect of the invention, the middle of the drive gear is provided with several limiting grooves that are evenly distributed at equal angles. Several first locking pins that are evenly distributed at equal angles are fixedly connected to the side of the first transmission plate near the drive gear. Several second locking pins that are evenly distributed at equal angles are fixedly connected to the side of the second transmission plate near the drive gear. The total number of the first locking pins, the second locking pins, and the limiting grooves is the same. The heights of the first locking pins, the second locking pins, and the limiting grooves are all the same.

[0014] As a further embodiment of the invention, the limiting component includes a limiting sleeve, a transmission block is fixedly connected to one side of the limiting sleeve, a supporting slide sleeve is fixedly connected to one side of the transmission block and the other side of the limiting sleeve, a supporting slide rod is movably inserted through the axis of the supporting slide sleeve, the supporting slide rod is fixedly connected to the inner wall of the printing cylinder, and the supporting slide rod is parallel to the axis of the printing cylinder, and a positioning plate is installed on the side wall of the transmission block.

[0015] As a further embodiment of the invention, the limiting sleeve is coaxial with the second drive shaft, and a number of limiting grooves evenly distributed at equal angles are provided through the inner circumferential sidewall of the limiting sleeve. A limiting block is movably sleeved on the top of the limiting groove, and a second spring is installed in the limiting groove. The top of the second spring is fixedly connected to the limiting block.

[0016] As a further aspect of the invention, a limiting toothed sleeve is fixedly sleeved on the outer periphery of one end of the second drive shaft. Several limiting toothed racks are fixedly connected to the outer periphery of the limiting toothed sleeve and are evenly distributed at equal angles. One side wall of the limiting toothed rack is perpendicular to the outer side wall of the limiting toothed sleeve, and the other side wall of the limiting toothed rack remains inclined.

[0017] As a further embodiment of the invention, several connecting frames evenly distributed at equal angles are fixedly connected to both ends of the main support shaft. The connecting frames are fixedly connected to the inner wall of the printing cylinder, so that the printing cylinder and the main support shaft are coaxial. The side wall of the connecting frame is provided with an installation groove. The side sealing plate is installed on the connecting frame by connecting bolts and threaded connection with the installation groove. A through groove is provided on the side sealing plate near the transmission block.

[0018] As a further aspect of the invention, a printing cylinder has a printing plate groove on its outer surface, and printing plate supports are installed at both ends of the printing plate groove. The two ends of the printing plate shaft are respectively rotatably connected to the printing plate supports, and one end of the printing plate shaft passes through the printing plate supports.

[0019] As a further aspect of the invention, a pressure sensor is installed in the groove wall of the printing cylinder on the side away from the printing plate shaft, and several counterweights are installed on the inner wall of the printing cylinder.

[0020] The beneficial effects of this invention are:

[0021] (1) After the two ends of the printing plate are respectively aligned with the slots on the printing cylinder and the plate winding shaft, the printing plate is wound loosely on the printing cylinder. Then, the positioning component is activated to keep the drive gear stationary relative to the support sleeve. The main support shaft is then rotated by the water-based printing press, which in turn rotates the printing cylinder and the side sealing plate. The side sealing plate drives the transmission gear and the plate winding gear to make a circular motion around the drive gear. The drive gear drives the transmission gear to rotate through meshing transmission, which in turn drives the plate winding gear to rotate. The plate winding gear drives the plate winding shaft to rotate, and the plate winding shaft winds up the printing plate, thus making the printing plate taut and wound on the printing cylinder. The pressure sensor ensures that the force for winding and tauting the printing plate is within a suitable range. The limiting component ensures that the second transmission shaft can only rotate in one direction, thus making the plate winding... The winding force of the shaft will not decrease, and when the water-based printing press pauses the rotation of the main support shaft, the limiting component keeps the second drive shaft stationary, thereby ensuring the stationary position of the plate roll shaft and preventing the printing plate from losing tension. Subsequently, the positioning component keeps the drive gear stationary relative to the main support shaft and the printing cylinder, and allows the drive gear to rotate flexibly relative to the support sleeve. The drive gear, in conjunction with the limiting component, maintains the winding force of the plate roll shaft on the printing plate, preventing the printing plate from loosening due to changes in the rotation direction of the printing cylinder during printing, thus ensuring the printing effect of the printing plate. When it is necessary to change the printing plate, the limiting component and the second drive shaft are separated, and the positioning component again keeps the drive gear stationary relative to the support sleeve. The water-based printing press rotates the main support shaft and the printing cylinder in the opposite direction, causing the plate roll shaft to loosen its winding force on the printing plate, thereby quickly changing the printing plate.

[0022] (2) The first transmission plate is pushed by the elastic force of the first spring to push the first locking post, so that the first locking post is inserted into the limiting groove and the two ends of the first locking post are flush with the two sides of the driving gear, so that the second locking post cannot be inserted into the limiting groove, thus avoiding the second locking post and the second transmission plate from affecting the rotation of the driving gear. When the printing plate is wound up, the cylinder extends and pushes the second transmission plate through the connecting plate, thereby pushing the second locking post into the limiting groove and pushing out the first locking post until the second locking post is flush with the driving gear, thus avoiding the first locking post from restricting the driving gear and interfering with the winding process. After the winding is finished, the cylinder retracts and the first locking post is inserted into the limiting groove again by the elastic force of the first spring. The first locking post is then engaged by the sliding engagement of the first transmission plate and the locking crossbar, thus ensuring that the driving gear and the main support shaft rotate synchronously at this time, maintaining the winding tension and avoiding wrinkles.

[0023] (3) When the printing plate needs to be replaced, the positioning plate pushes and pulls the transmission block, which in turn pushes the limiting sleeve, so that the limiting sleeve separates from the limiting tooth sleeve, so that the limiting block no longer limits the limiting tooth rack, and the printing plate gear can rotate flexibly, thus facilitating plate replacement. When the printing plate needs to be tensioned, the positioning plate pushes and pulls the transmission block, which in turn pushes the limiting sleeve, so that the limiting sleeve is fitted around the outer circumference of the limiting tooth sleeve. Through the limiting sliding of the support slide and the support slide rod, the limiting sleeve and the limiting tooth sleeve are prevented from deviating. Through the repeated extension and retraction of the second spring, the limiting block limits the limiting tooth rack, so that the limiting tooth sleeve can only rotate in one direction, thus ensuring that the device can only rewind the printing plate when it is in the limiting position, maintaining the winding force of the printing plate and improving the quality of printing. Attached Figure Description

[0024] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0025] Figure 1 This is a front view of the overall structure of the present invention;

[0026] Figure 2 for Figure 1 Enlarged view of region A in the middle;

[0027] Figure 3 This is a side view of the overall structure of the present invention;

[0028] Figure 4 for Figure 3 Enlarged view of region B in the middle;

[0029] Figure 5 This is a side view of the overall structure of the printing cylinder of the present invention;

[0030] Figure 6 This is a side view of the internal structure of the printing cylinder removal side sealing plate of the present invention;

[0031] Figure 7 for Figure 6 Enlarged view of region C in the middle;

[0032] In the diagram: 1. Printing cylinder; 2. Printing plate; 3. Groove; 4. Plate winding shaft; 5. Main support shaft; 6. Side sealing plate; 7. Support frame; 8. Support sleeve; 9. Drive gear; 10. Transmission gear; 11. Plate winding gear; 12. First transmission shaft; 13. Second transmission shaft; 14. Plate winding groove; 15. First transmission plate; 16. First locking post; 17. Locking crossbar; 18. First spring; 19. Second transmission plate; 20. Second locking post ; 21. Mounting bracket; 22. Cylinder; 23. Connecting plate; 24. Roll plate support; 25. Limiting groove; 26. Transmission block; 27. Positioning plate; 28. Mounting bolt; 29. ​​Limiting sleeve; 30. Limiting groove; 31. Second spring; 32. Limiting block; 33. Limiting toothed sleeve; 34. Limiting rack; 35. Supporting slide rod; 36. Supporting slide sleeve; 37. Pressure sensor; 38. Counterweight; 39. Connecting bracket; 40. Mounting groove. Detailed Implementation

[0033] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0034] Please see Figure 1-7 As shown: An electric plate winding mechanism for a water-based printing press includes a printing cylinder 1, a plate winding shaft 4 embedded on the outer periphery of the printing cylinder 1, and slots 3 on the outer periphery of both the printing cylinder 1 and the plate winding shaft 4. A printing plate 2 is wound on the printing cylinder 1, and the printing cylinder 1 and the plate winding shaft 4 are respectively connected to the two ends of the printing plate 2 through the slots 3. Side sealing plates 6 are installed at both ends of the printing cylinder 1. A main support shaft 5 connected to the drive motor of the water-based printing press passes through the middle of the printing cylinder 1. The main support shaft 5, the printing cylinder 1, and the side sealing plates 6 are coaxial. Support sleeves 8 are rotatably connected to both ends of the main support shaft 5. A support frame 7 for docking with the water-based printing press is fixedly connected to the lower side of the support sleeve 8. One of the support sleeves 8 is close to the printing plate. One end of the cylinder 1 is rotatably connected to a drive gear 9. A transmission gear 10 is provided on one side of the drive gear 9, and a plate-winding gear 11 is provided on one side of the transmission gear 10. The transmission gear 10 meshes with the drive gear 9 and the plate-winding gear 11 respectively. The plate-winding gear 11 is fixedly connected to the plate-winding shaft 4 through a first transmission shaft 12. The transmission gear 10 is rotatably connected to the side sealing plate 6 through a second transmission shaft 13, and the second transmission shaft 13 passes through the side sealing plate 6. A limiting component for limiting the second transmission shaft 13 is installed inside the printing cylinder 1. Positioning components for positioning the drive gear 9 are installed on both sides of the drive gear 9. A pressure sensor 37 is installed in the groove 3 on the printing cylinder 1 on the side wall away from the plate-winding shaft 4.

[0035] In this embodiment, after the two ends of the printing plate 2 are respectively aligned with the slots 3 on the printing cylinder 1 and the plate winding shaft 4, the printing plate 2 is wound loosely on the printing cylinder 1. Then, the positioning assembly is activated, keeping the drive gear 9 stationary relative to the support sleeve 8. The main support shaft 5 is then rotated by the water-based printing press, which in turn rotates the printing cylinder 1 and the side sealing plate 6. The side sealing plate 6 drives the transmission gear 10 and the plate winding gear 11 to perform circumferential motion around the drive gear 9. The drive gear 9 uses meshing transmission to drive the transmission gear 10 to rotate, which in turn drives the plate winding gear 11 to rotate. The plate winding gear 11 then drives the plate winding shaft 4 to rotate, thereby winding the printing plate 2. The plate winding shaft 4 then winds the printing plate 2, thus tautly winding the printing plate 2 on the printing cylinder 1. The pressure sensor 37 ensures that the force for winding and tauting the printing plate 2 is within a suitable range. The limiting assembly ensures that the second transmission shaft 13 can only rotate in one direction. This ensures that the winding force of the plate roll 4 does not decrease, and when the water-based printing press pauses rotating the main support shaft 5, the limiting component keeps the second drive shaft 13 stationary, thereby ensuring the stationary position of the plate roll 4 and preventing the printing plate 2 from losing tension. Subsequently, the positioning component keeps the drive gear 9 stationary relative to the main support shaft 5 and the printing cylinder 1, and allows the drive gear 9 to rotate flexibly relative to the support sleeve 8. Through the action of the drive gear 9 and the limiting component, the winding force of the plate roll 4 on the printing plate 2 is maintained, preventing the printing plate 2 from loosening due to the change in the rotation direction of the printing cylinder 1 during printing, thus ensuring the printing effect of the printing plate 2. When it is necessary to replace the printing plate 2, the limiting component and the second drive shaft 13 are separated, and the positioning component again keeps the drive gear 9 stationary relative to the support sleeve 8. The water-based printing press rotates the main support shaft 5 and the printing cylinder 1 in the opposite direction, causing the plate roll 4 to loosen its winding force on the printing plate 2, thereby quickly replacing the printing plate 2.

[0036] The positioning assembly includes a first transmission plate 15 and a second transmission plate 19. The first transmission plate 15 is disposed between the side sealing plate 6 and the drive gear 9. The first transmission plate 15 is movably sleeved on the main support shaft 5. Several locking crossbars 17 are fixedly connected on the main support shaft 5 between the side sealing plate 6 and the drive gear 9 and are evenly distributed at equal angles. The inner circumference of the first transmission plate 15 is provided with a groove that fits into the locking crossbars 17, and the first transmission plate 15 is slidably connected to the locking crossbars 17. The first transmission plate 15 rotates synchronously with the main support shaft 5 through the locking crossbars 17. A first spring 18 is movably disposed between the first transmission plate 15 and the side sealing plate 6 and on the outer circumference of the main support shaft 5. The two ends of the first spring 18 abut against the first transmission plate 15 and the side sealing plate 6, respectively.

[0037] The second transmission plate 19 is movably sleeved on the support sleeve 8 where the drive gear 9 is located, and the second transmission plate 19 is located between the drive gear 9 and the support frame 7. Mounting frames 21 are installed on both sides of the support frame 7 near the drive gear 9. A cylinder 22 is installed on the mounting frame 21. The telescopic end of the cylinder 22 is fixedly connected to the second transmission plate 19 through the connecting plate 23.

[0038] The driving gear 9 has several limiting grooves 25 evenly distributed at equal angles in the middle. The first transmission plate 15 is fixedly connected to several first locking pins 16 evenly distributed at equal angles on the side near the driving gear 9. The second transmission plate 19 is fixedly connected to several second locking pins 20 evenly distributed at equal angles on the side near the driving gear 9. The total number of first locking pins 16, second locking pins 20 and limiting grooves 25 is the same. The height of the first locking pins 16, second locking pins 20 and limiting grooves 25 is the same.

[0039] The first spring 18 pushes the first transmission plate 15 to push the first locking post 16, causing the first locking post 16 to insert into the limiting groove 25. Both ends of the first locking post 16 are flush with the two sides of the drive gear 9, preventing the second locking post 20 from inserting into the limiting groove 25. This avoids the second locking post 20 and the second transmission plate 19 affecting the rotation of the drive gear 9. When the printing plate 2 is retracted, the cylinder 22 extends, pushing the second transmission plate 19 through the connecting plate 23, thereby pushing the second locking post 20. Insert the first locking pin 16 into the limiting groove 25 until the second locking pin 20 is flush with the drive gear 9. This prevents the first locking pin 16 from restricting the drive gear 9 and interfering with the winding process. After winding is finished, the cylinder 22 retracts, and the first locking pin 16 is inserted back into the limiting groove 25 by the elastic force of the first spring 18. It is then engaged by the sliding engagement of the first transmission plate 15 and the locking crossbar 17, thereby ensuring that the drive gear 9 and the main support shaft 5 rotate synchronously at this time, maintaining the winding tension and preventing wrinkles.

[0040] The limiting assembly includes a limiting sleeve 29. A transmission block 26 is fixedly connected to one side of the limiting sleeve 29. A support slide sleeve 36 is fixedly connected to one side of the transmission block 26 and the other side of the limiting sleeve 29. A support slide rod 35 is movably passed through the axis of the support slide sleeve 36. The support slide rod 35 is fixedly connected to the inner wall of the printing cylinder 1 and is parallel to the axis of the printing cylinder 1. A positioning plate 27 is installed on the side wall of the transmission block 26.

[0041] The limiting sleeve 29 is coaxial with the second drive shaft 13. Several limiting grooves 30 are evenly distributed at equal angles through the inner circumferential sidewall of the limiting sleeve 29. The top of the limiting groove 30 is movably sleeved with a limiting block 32. A second spring 31 is installed in the limiting groove 30. The top of the second spring 31 is fixedly connected to the limiting block 32.

[0042] One end of the second drive shaft 13 is fixedly sleeved with a limiting tooth sleeve 33. Several limiting tooth racks 34 are fixedly connected to the outer periphery of the limiting tooth sleeve 33 and are evenly distributed at equal angles. One side wall of the limiting tooth rack 34 is perpendicular to the outer periphery side wall of the limiting tooth sleeve 33, and the other side wall of the limiting tooth rack 34 remains inclined.

[0043] When the printing plate needs to be replaced, the positioning plate 27 pushes and pulls the transmission block 26, which in turn pushes the limiting sleeve 29, causing the limiting sleeve 29 to separate from the limiting toothed sleeve 33. This allows the limiting block 32 to no longer limit the limiting rack 34, enabling the printing plate gear 11 to rotate flexibly, thus facilitating plate replacement. When the printing plate 2 needs to be tensioned, the positioning plate 27 pushes and pulls the transmission block 26, which in turn pushes the limiting sleeve 29, causing the limiting sleeve 29 to fit around the limiting toothed sleeve 33. Through the limiting sliding of the supporting slide sleeve 36 and the supporting slide rod 35, the limiting sleeve 29 is prevented from shifting away from the limiting toothed sleeve 33. The repeated extension and retraction of the second spring 31 causes the limiting block 32 to limit the limiting rack 34, thus ensuring that the limiting toothed sleeve 33 can only rotate in one direction. This ensures that the device can only rewind the printing plate 2 when it is in the limiting position, maintaining the winding force of the printing plate 2 and improving the printing quality.

[0044] Both ends of the main support shaft 5 are fixedly connected to several connecting frames 39 that are evenly distributed at equal angles. The connecting frames 39 are fixedly connected to the inner wall of the printing cylinder 1, so that the printing cylinder 1 and the main support shaft 5 are coaxial. The side wall of the connecting frame 39 is provided with an installation groove 40. The side sealing plate 6 is installed on the connecting frame 39 by threaded connection between the installation bolt 28 and the installation groove 40. The side sealing plate 6 near the transmission block 26 is provided with a through groove, which facilitates pushing and pulling the positioning plate 27 and moving the limiting component.

[0045] The outer surface of the printing cylinder 1 is provided with a plate winding groove 14. Plate winding supports 24 are installed at both ends of the plate winding groove 14. The two ends of the plate winding shaft 4 are respectively rotatably connected to the plate winding supports 24, and one end of the plate winding shaft 4 passes through the plate winding supports 24. Several counterweights 38 are installed on the inner side wall of the printing cylinder 1. The counterweights 38 ensure that the axis and center of gravity of the device coincide when rotating.

[0046] In use, the operator aligns the two ends of the printing plate 2 with the slots 3 on the printing cylinder 1 and the plate winding shaft 4, respectively. The printing plate 2 is wound loosely onto the printing cylinder 1. Then, the positioning assembly is activated, keeping the drive gear 9 stationary relative to the support sleeve 8. The main support shaft 5 is then rotated by the water-based printing press, which in turn rotates the printing cylinder 1 and the side sealing plate 6. The side sealing plate 6 drives the transmission gear 10 and the plate winding gear 11 to rotate around the drive gear 9. The drive gear 9 uses meshing transmission to drive the transmission gear 10 to rotate, which in turn drives the plate winding gear 11 to rotate. The plate winding gear 11 then drives the plate winding shaft 4 to rotate, thus winding the printing plate 2 tightly onto the printing cylinder 1. The pressure sensor 37 ensures that the force for winding and tightening the printing plate 2 is within a suitable range. The limiting assembly ensures that the second transmission shaft 13 can only rotate in one direction. The limiting component keeps the second drive shaft 13 stationary when the main support shaft 5 of the water-based printing press is paused, thus ensuring the stationary position of the plate 4 and preventing the printing plate 2 from losing tension. Subsequently, the positioning component keeps the drive gear 9 stationary relative to the main support shaft 5 and the printing cylinder 1, and allows the drive gear 9 to rotate flexibly relative to the support sleeve 8. The drive gear 9, in conjunction with the limiting component, maintains the winding force of the plate 4 on the printing plate 2, preventing the printing plate 2 from loosening due to changes in the rotation direction of the printing cylinder 1 during printing, thereby ensuring the printing effect of the printing plate 2. When the printing plate 2 needs to be replaced, the limiting component and the second drive shaft 13 are separated, and the positioning component again keeps the drive gear 9 stationary relative to the support sleeve 8. The main support shaft 5 and the printing cylinder 1 are rotated in the opposite direction by the water-based printing press, causing the plate 4 to loosen its winding force on the printing plate 2, thereby quickly replacing the printing plate 2.

[0047] The first spring 18 pushes the first transmission plate 15 to push the first locking post 16, causing the first locking post 16 to insert into the limiting groove 25. Both ends of the first locking post 16 are flush with the two sides of the drive gear 9, preventing the second locking post 20 from inserting into the limiting groove 25. This avoids the second locking post 20 and the second transmission plate 19 affecting the rotation of the drive gear 9. When the printing plate 2 is retracted, the cylinder 22 extends, pushing the second transmission plate 19 through the connecting plate 23, thereby pushing the second locking post 20. Insert the first locking pin 16 into the limiting groove 25 until the second locking pin 20 is flush with the drive gear 9. This prevents the first locking pin 16 from restricting the drive gear 9 and interfering with the winding process. After winding is finished, the cylinder 22 retracts. The first locking pin 16 is inserted back into the limiting groove 25 by the elastic force of the first spring 18. It is then engaged by the sliding engagement of the first transmission plate 15 and the locking crossbar 17, thereby ensuring that the drive gear 9 and the main support shaft 5 rotate synchronously at this time, maintaining the winding tension and preventing wrinkles.

[0048] When the printing plate needs to be replaced, the positioning plate 27 pushes and pulls the transmission block 26, which in turn pushes the limiting sleeve 29, causing the limiting sleeve 29 to separate from the limiting toothed sleeve 33. This allows the limiting block 32 to no longer limit the limiting rack 34, enabling the printing plate gear 11 to rotate flexibly, thus facilitating plate replacement. When the printing plate 2 needs to be tensioned, the positioning plate 27 pushes and pulls the transmission block 26, which in turn pushes the limiting sleeve 29, causing the limiting sleeve 29 to fit around the limiting toothed sleeve 33. Through the limiting sliding of the supporting slide sleeve 36 and the supporting slide rod 35, the limiting sleeve 29 is prevented from shifting away from the limiting toothed sleeve 33. The repeated extension and retraction of the second spring 31 causes the limiting block 32 to limit the limiting rack 34, thus ensuring that the limiting toothed sleeve 33 can only rotate in one direction. This ensures that the device can only rewind the printing plate 2 when it is in the limiting position, maintaining the winding force of the printing plate 2 and improving the printing quality.

[0049] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An electric plate winding mechanism for a water-based printing press, characterized in that, The system includes a printing cylinder (1), on which a plate winding shaft (4) is embedded. Both the printing cylinder (1) and the plate winding shaft (4) have slots (3) on their outer peripheries. A printing plate (2) is wound around the printing cylinder (1), and the printing cylinder (1) and the plate winding shaft (4) are respectively connected to both ends of the printing plate (2) through the slots (3). Side sealing plates (6) are installed at both ends of the printing cylinder (1). A main support shaft (5) connected to the drive motor of a water-based printing machine passes through the middle of the printing cylinder (1). The main support shaft (5), the printing cylinder (1), and the side sealing plates (6) are coaxial. Support sleeves (8) are rotatably connected to both ends of the main support shaft (5). A support frame (7) for docking with the water-based printing machine is fixedly connected to the lower side of the support sleeve (8). A drive gear (9) is rotatably connected to one end of a support sleeve (8) near the printing cylinder (1). A transmission gear (10) is provided on one side of the drive gear (9), and a plate-rolling gear (11) is provided on one side of the transmission gear (10). The transmission gear (10) meshes with the drive gear (9) and the plate-rolling gear (11) respectively. The plate-rolling gear (11) is fixedly connected to the plate-rolling shaft (4) through the first transmission shaft (12). The transmission gear (10) is rotatably connected to the side sealing plate (6) through the second transmission shaft (13), and the second transmission shaft (13) passes through the side sealing plate (6). A limiting component for limiting the second transmission shaft (13) is installed inside the printing cylinder (1). Positioning components for positioning the drive gear (9) are installed on both sides of the drive gear (9). The positioning assembly includes a first transmission plate (15) and a second transmission plate (19). The first transmission plate (15) is located between the side sealing plate (6) and the drive gear (9). The first transmission plate (15) is movably sleeved on the main support shaft (5). Several snap-fit ​​crossbars (17) are fixedly connected on the main support shaft (5) between the side sealing plate (6) and the drive gear (9) at equal angles. The first transmission plate (15) rotates synchronously with the main support shaft (5) through the snap-fit ​​crossbars (17). A first spring (18) is movably provided between the first transmission plate (15) and the side sealing plate (6) and on the outer periphery of the main support shaft (5). The two ends of the first spring (18) abut against the first transmission plate (15) and the side sealing plate (6) respectively. The second transmission plate (19) is movably sleeved on the support sleeve (8) where the drive gear (9) is located, and the second transmission plate (19) is located between the drive gear (9) and the support frame (7). Mounting brackets (21) are installed on both sides of the support frame (7) near the drive gear (9). A cylinder (22) is installed on the mounting bracket (21). The telescopic end of the cylinder (22) is fixedly connected to the second transmission plate (19) through the connecting plate (23). The driving gear (9) has several limiting grooves (25) evenly distributed at equal angles in the middle. The first transmission plate (15) is fixedly connected to several first locking pins (16) evenly distributed at equal angles on one side near the driving gear (9). The second transmission plate (19) is fixedly connected to several second locking pins (20) evenly distributed at equal angles on one side near the driving gear (9). The total number of the first locking pins (16), the second locking pins (20) and the limiting grooves (25) is the same. The heights of the first locking pins (16), the second locking pins (20) and the limiting grooves (25) are all the same.

2. The electric plate winding mechanism for a water-based printing press according to claim 1, characterized in that, The limiting component includes a limiting sleeve (29), a transmission block (26) is fixedly connected to one side of the limiting sleeve (29), a support slide sleeve (36) is fixedly connected to one side of the transmission block (26) and the other side of the limiting sleeve (29), a support slide rod (35) is movably passed through the axis of the support slide sleeve (36), the support slide rod (35) is fixedly connected to the inner wall of the printing cylinder (1), and the support slide rod (35) is parallel to the axis of the printing cylinder (1), and a positioning plate (27) is installed on the side wall of the transmission block (26).

3. The electric plate winding mechanism for a water-based printing press according to claim 2, characterized in that, The limiting sleeve (29) is coaxial with the second drive shaft (13). The inner circumferential sidewall of the limiting sleeve (29) is provided with several limiting grooves (30) that are evenly distributed at equal angles. The top of the limiting groove (30) is movably sleeved with a limiting block (32). A second spring (31) is installed in the limiting groove (30). The top of the second spring (31) is fixedly connected to the limiting block (32).

4. The electric plate winding mechanism for a water-based printing press according to claim 3, characterized in that, One end of the second transmission shaft (13) is fixedly sleeved with a limiting tooth sleeve (33). The outer periphery of the limiting tooth sleeve (33) is fixedly connected with several limiting tooth racks (34) that are evenly distributed at equal angles. One side wall of the limiting tooth rack (34) is perpendicular to the outer periphery side wall of the limiting tooth sleeve (33), and the other side wall of the limiting tooth rack (34) remains inclined.

5. The electric plate winding mechanism for a water-based printing press according to claim 1, characterized in that, Both ends of the main support shaft (5) are fixedly connected to several connecting frames (39) evenly distributed at equal angles. The connecting frames (39) are fixedly connected to the inner wall of the printing cylinder (1), so that the printing cylinder (1) and the main support shaft (5) are coaxial. The side wall of the connecting frame (39) is provided with an installation groove (40). The side sealing plate (6) is installed on the connecting frame (39) by the threaded connection of the installation bolt (28) and the installation groove (40). The side sealing plate (6) near the transmission block (26) is provided with a through groove.

6. The electric plate winding mechanism for a water-based printing press according to claim 1, characterized in that, The outer surface of the printing cylinder (1) is provided with a plate groove (14), and plate supports (24) are installed at both ends of the plate groove (14). The two ends of the plate shaft (4) are respectively rotatably connected to the plate supports (24), and one end of the plate shaft (4) passes through the plate supports (24).

7. The electric plate winding mechanism for a water-based printing press according to claim 1, characterized in that, A pressure sensor (37) is installed in the groove (3) on the printing cylinder (1) and on the side wall away from the roll shaft (4). Several counterweights (38) are installed on the inner wall of the printing cylinder (1).

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