A roll paper automatic discharging device of a film laminating machine and a continuous production method

Abstract

The application discloses a kind of automatic paper unloading device of laminating machine and continuous production method, it is mainly related to the technical field of laminating machine.It includes the rotating disc being rotationally arranged on the frame, the rotating disc is rotationally connected with first winding roller and second winding roller, first swing arm and second swing arm are rotationally connected on the frame, the end of first swing arm and second swing arm is respectively equipped with cutting mechanism and film pressing roller for cooperation with first winding roller and second winding roller, and the unloading mechanism includes the first movable frame being slidably arranged on the frame along the transverse direction, the second movable frame is slidably arranged on the first movable frame along the longitudinal direction, the first push plate and the second push plate are respectively arranged on the two ends of the second movable frame and contact with the winding drum, the frame is provided with the inclined plate contacting with the winding drum, and the first limiting block contacting with the winding drum is slidably connected on the inclined plate.The beneficial effects of the application are that the problem of laminating machine winding shutdown is solved, the automatic paper unloading of laminating machine is realized, and the production efficiency of laminating machine is improved.

Description

Technical Field

[0001] This invention relates to the technical field of coating machines, specifically to an automatic paper roll feeding device and continuous production method for a coating machine. Background Technology

[0002] The laminating machine is a core production equipment in the field of paper-plastic composite and packaging material processing. It mainly uses the extrusion casting process to uniformly laminate molten plastic film onto the surface of substrates such as paper and non-woven fabric. After cooling and shaping, the substrate lamination process is completed. Finally, the processed composite roll is rolled up by the winding mechanism to facilitate subsequent cutting, transportation and deep processing.

[0003] Existing traditional coating machines typically use a single-shaft winding mode for their winding mechanism. When the coating roll on the shaft core is wound to the set roll diameter, the entire machine needs to be stopped. The operator then manually removes the fully loaded old shaft core from the winding station and installs the empty new shaft core into the winding station. After the shaft core replacement is completed, the coating machine is restarted to continue production.

[0004] However, in the process of adopting the above technical solution, the machine must be stopped every time the shaft core is replaced, which causes the coating production process to be interrupted and the winding operation to be discontinuous, thus reducing the overall production efficiency of the machine. Secondly, since the full roll of paper is heavy, the manual disassembly of the old shaft core and assembly of the new shaft core increases the labor intensity of the workers to a certain extent and reduces the production efficiency of the coating machine. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic paper feeding device and a continuous production method for a coating machine, which solves the problem of needing to stop the coating machine during winding, realizes automatic paper feeding of the coating machine, and improves the production efficiency of the coating machine.

[0006] To achieve the above objectives, the invention employs the following technical solution: An automatic paper roll feeding device for a coating machine includes a dual-station rotary winding mechanism and a feeding mechanism mounted on a frame and used in conjunction with a roll. The dual-station rotary winding mechanism includes a turntable rotatably mounted on the frame, with a first winding roller and a second winding roller rotatably connected to the turntable. A first swing arm and a second swing arm are rotatably connected to the frame. The ends of the first swing arm and the second swing arm are respectively provided with a cutting mechanism and a film pressing roller that cooperate with the first winding roller and the second winding roller. The feeding mechanism includes a first movable frame slidably mounted on the frame laterally, and a second movable frame slidably mounted on the first movable frame longitudinally. The two ends of the second movable frame are respectively provided with a first push plate and a second push plate that contact the roll. The frame is provided with an inclined plate that contacts the roll, and a first limiting block that contacts the roll is slidably connected to the inclined plate.

[0007] Furthermore, it also includes a first wedge block slidably disposed on the inclined plate. One side of the first wedge block is provided with a first inclined surface that contacts the drum. A first slide plate is slidably connected to the inclined plate. The first wedge block and the first limiting block are respectively disposed on both sides of the first slide plate. The inclined plate is provided with a plurality of first guide rods that slide in contact with the first slide plate. A first spring is sleeved on the outer side of the first guide rod. A first nut is provided at the end of the first guide rod. The first spring is disposed between the first nut and the first slide plate.

[0008] Furthermore, a second limiting block is slidably connected to the inclined plate, and the second limiting block is provided with a second inclined surface that contacts the drum.

[0009] Furthermore, a slider is slidably connected to the inclined plate, and a third inclined surface and a fourth inclined surface are respectively provided on both sides of the slider. A second wedge block and a third wedge block are respectively provided at the bottom of the first sliding plate and the second limiting block. A fifth inclined surface and a sixth inclined surface that contact the third inclined surface and the fourth inclined surface are respectively provided on the second wedge block and the third wedge block. A plurality of second guide rods that slide in contact with the second limiting block are provided on the inclined plate. A second spring is provided on the outside of the second guide rod. A second nut is provided on the second guide rod. The second spring is disposed between the second nut and the second limiting block.

[0010] Furthermore, the second push plate and the inclined plate are respectively provided with a guide plate and a guide block that slide in contact with the drum. The guide plate and the guide block are offset. One end of the guide plate is in contact with the inclined plate, and the other end of the guide plate is provided with an arc-shaped plate that is in contact with the drum.

[0011] Furthermore, both the first and second take-up rollers have conical blocks at their ends that contact the drum.

[0012] Furthermore, both the first and second take-up rollers are provided with a plurality of fixed plates, and a second sliding plate is slidably connected to the fixed plates. A plurality of first connecting rods and second connecting rods are rotatably connected to the fixed plates and the second sliding plate, respectively. The rollers also include a plurality of limiting plates that contact the drum. The first connecting rods and the second connecting rods are rotatably connected to the two ends of the limiting plates, respectively.

[0013] Furthermore, a protruding rod is slidably connected to one end of the second slide plate, and a third spring is provided between the protruding rod and the slider. Several paddles that contact the protruding rod are rotatably connected to the first push plate. The paddles contact the protruding rod and drive the second slide plate to slide on the fixed plate until the limiting plate, the first connecting rod, and the second connecting rod are on the same straight line. A torsion spring is provided between the paddle and the first push plate. A third guide rod that is slidably connected to the fixed plate is provided on the second slide plate. A fourth spring is sleeved on the outside of the third guide rod. The fourth spring is located between the fixed plate and the second slide plate. A groove is provided on the second slide plate. A top block that contacts the first connecting rod is slidably connected to the groove. A seventh inclined surface that slidably contacts the top block is provided on one side of the groove. A pull rope is provided between one of the top blocks and the protruding rod, and between adjacent top blocks. An annular block connected to several protruding rods is also included.

[0014] Furthermore, the frame is equipped with a hydraulic cylinder, the movable end of which is connected to the first movable frame. The second movable frame is equipped with a stepper motor, and the first movable frame is rotatably connected to a screw threadedly connected to the second movable frame. The movable end of the stepper motor is connected to the screw.

[0015] A continuous production method for an automatic paper roll feeding device for a coating machine includes the following steps: S1. Initially, the first take-up roller drives the shaft core to rotate and take up the coated paper roll. The outer diameter of the coated paper roll is monitored in real time by the sensor. When the roll diameter reaches the set value, the roll change signal is triggered. By rotating the turntable on the frame, the fully rolled first take-up roller is rotated to the unloading position, and at the same time, the second take-up roller with the pre-loaded empty shaft core is rotated to the take-up position. Then, by swinging the first swing arm and the second swing arm on the frame, the cutting mechanism and the pressure roller on the first swing arm and the second swing arm are moved to the unloading position and the loading position, respectively. Then, the roll material is cut by the cutting mechanism, and at the same time, the pressure roller contacts the roll head and presses it firmly onto the new shaft core of the second take-up roller. Then, by rotating the second take-up roller, a new round of winding continues. S2. The first movable frame slides laterally on the machine frame, causing the second movable frame, the first push plate, and the second push plate to slide together on the first movable frame, so that the first push plate and the second push plate move to both sides of the fully wound first take-up roller. By sliding the second movable frame longitudinally on the first movable frame, the first push plate slides longitudinally, so that the first push plate contacts the fully wound roll, causing the fully wound roll to detach from the first take-up roller and move to the top of the inclined plate until the roll completely detaches from the first take-up roller and falls onto the inclined plate. Guided by the inclined plate, the fully wound roll falls to the next process. S3. Slide the first limiting block on the inclined plate to release the restriction on the empty drum sliding on the inclined plate. Under the action of the empty drum's own weight, the empty drum slides on the inclined plate and moves between the first push plate and the second push plate. Then, slide the second movable frame longitudinally on the first movable frame in the opposite direction, so that the first push plate contacts the empty drum and drives the empty drum to move until the empty drum is sleeved on the outside of the shaft core of the first take-up roller, realizing the unloading of the full roll drum and the loading of the empty drum.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Initially, the first take-up roller drives the shaft core to rotate and take up the coated paper roll. The outer diameter of the coated paper roll is monitored in real time by a sensor. When the roll diameter reaches the set value, a roll change signal is triggered. By rotating the turntable on the frame, the fully rolled first take-up roller is rotated to the unloading position, and at the same time, the second take-up roller with the pre-loaded empty shaft core is rotated to the take-up position. Then, by swinging the first and second swing arms on the frame, the cutting mechanism and the pressure roller on the first and second swing arms are moved to the unloading position and the loading position, respectively. Then, the roll material is cut by the cutting mechanism, and at the same time, the pressure roller contacts the paper roll head and presses it firmly onto the new shaft core of the second take-up roller. Then, by rotating the second take-up roller, a new round of take-up continues. There is no need to stop the machine to wait for roll change, avoiding discontinuous take-up operations and improving the overall production efficiency of the machine. 2. By sliding the first movable frame laterally on the machine frame, the second movable frame, the first push plate, and the second push plate slide together on the first movable frame, causing the first push plate and the second push plate to move to both sides of the fully wound first take-up roller. By sliding the second movable frame longitudinally on the first movable frame, the first push plate slides longitudinally, causing the first push plate to contact the fully wound drum, causing the fully wound drum to detach from the first take-up roller and move to the top of the inclined plate until the drum completely detaches from the first take-up roller and falls onto the inclined plate. Guided by the inclined plate, the fully wound drum falls to the next process. Next, by sliding the first limiting block on the inclined plate, the restriction on the empty roll sliding on the inclined plate is released. Under the action of the empty roll's own weight, the empty roll slides on the inclined plate and moves between the first push plate and the second push plate. Then, it slides the second movable frame longitudinally on the first movable frame in the opposite direction, so that the first push plate contacts the empty roll and drives the empty roll to move until the empty roll is sleeved on the outside of the shaft core of the first take-up roller. This realizes the unloading of the full roll and the loading of the empty roll without the need for manual disassembly of the old shaft core and assembly of the new shaft core, thereby reducing the labor intensity of workers and improving the production efficiency of the coating machine. 3. When the fully wound drum falls from the inclined plate, the restriction on the empty drum is released through the direct cooperation of the fully wound drum, the first wedge block, the first inclined surface, the inclined plate, the first sliding plate, and the first limiting block, allowing the lowest empty drum to slide down the inclined plate. Then, when the fully wound drum slides past the first wedge block, the first sliding plate, the first wedge block, and the first limiting block are reset under the action of the first spring's rebound force, restricting the subsequent empty drum from moving further down. This achieves automatic feeding of the lowest empty drum without the need for an additional power device to drive the first limiting block to move, further reducing the space required for power device installation and the cost required for manufacturing. 4. As the fully wound drum moves the first sliding plate downwards, the second limiting block slides on the inclined plate through the cooperation of the second wedge block, the fifth inclined surface, the slider, the third inclined surface, the inclined plate, the fourth inclined surface, the third wedge block, and the sixth inclined surface. This causes the second limiting block to slide on the inclined plate until its end protrudes from the plate, preventing subsequent empty drums from moving further downwards. This avoids the remaining empty drums from following the bottom empty drum as it moves up and down on the inclined plate. When the first sliding plate returns to its original position, the second wedge block no longer contacts the slider. Under the action of the second spring's rebound force, the second limiting block moves downwards, releasing the restriction on the remaining empty drums. This allows the remaining empty drums to slide further on the inclined plate until the bottom empty drum contacts the first limiting block. This achieves single loading of empty drums without the need for an additional power unit to drive the second limiting block, further reducing the space required for power unit installation and the cost of manufacturing. 5. When the empty roll at the bottom slides on the inclined plate, guided by the guide plate and guide block, the empty roll falls to the arc plate at the end of the guide plate, making the empty roll concentric with the shaft core of the first take-up roller. Then, by sliding the second movable frame on the first movable frame, the second push plate and the empty roll move together. Then, one end of the empty roll contacts the conical block, correcting the position of the roll, making the empty roll concentric with the shaft core of the first take-up roller. This makes it easier to fit the empty roll on the outside of the first take-up roller, improving the stability of the equipment operation and thus improving the production efficiency of the coating machine. 6. When winding is required, the second movable frame is driven to slide on the first movable frame. Through the cooperation between the first push plate, the lever, the protruding rod, the annular block, the second slide plate, the fixed plate, the slide plate, the fourth spring, the first connecting rod, and the limiting plate, several limiting plates are moved on the fixed plate until the limiting plate is on the same straight line as the first connecting rod and the second connecting rod. The lever can no longer push the slide plate to slide on the fixed plate. The resulting resistance causes the lever to rotate on the first push plate, stretching the torsion spring between the lever and the first push plate until the lever completely passes through the first push plate. Then the lever is reset under the action of the torsion spring's rebound force. However, the first connecting rod, the second connecting rod, and the limiting plate are in contact with each other, restricting the second slide plate from resetting on the fixed plate. This ensures that the first winding roller is always in a contracted state, which facilitates the removal of the fully wound roll from the shaft core and the subsequent installation of the empty roll on the shaft core, improving the efficiency of removing and mounting the roll. 7. After the second push plate drives the empty roll to be fitted onto the shaft core, the top block slides on the second slide through the cooperation of the first push plate, the push block, the convex rod, the second slide plate, the pull rope, the top block, the groove, and the seventh inclined surface. This causes the top block to contact the first connecting rod. The force generated after contact causes the first connecting rod to rotate on the fixed plate, releasing the first and second connecting rods from mutual contact with the limiting plate. Under the action of the fourth spring's rebound force, the second slide plate slides on the fixed plate, causing the arc plate to move outward until the new roll is fixed on the shaft core. There is no need to set up an additional power drive to move the arc plate on the fixed plate, further reducing the space required for power unit installation and the cost of manufacturing. At the same time, no additional programming control is required, further reducing the programming difficulty of automated roll unloading of the coating machine. Attached Figure Description

[0017] Appendix Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Appendix Figure 2 This is a schematic diagram of the structure of the second take-up roller of the present invention.

[0019] Appendix Figure 3 This is a schematic diagram of the structure of the second movable frame of the present invention.

[0020] Appendix Figure 4 This is a partially enlarged view of the first limiting block of the present invention.

[0021] Appendix Figure 5 This is a schematic diagram of the structure of the guide plate of the present invention.

[0022] Appendix Figure 6 This is a schematic diagram of the limiting plate of the present invention.

[0023] Appendix Figure 7 This is a schematic diagram of the structure of the toggle block of the present invention.

[0024] Appendix Figure 8This is a schematic diagram of the protrusion of the present invention.

[0025] Appendix Figure 9 This is a schematic diagram of the top block of the present invention.

[0026] The labels shown in the attached diagram: 1. Frame; 2. Turntable; 3. First take-up roller; 4. Second take-up roller; 5. First swing arm; 6. Second swing arm; 7. Cutting mechanism; 8. Pressing roller; 9. First movable frame; 10. Second movable frame; 11. First push plate; 12. Second push plate; 13. Inclined plate; 14. First limit block; 15. First wedge block; 16. First inclined plane; 17. First sliding plate; 18. First guide rod; 19. First spring; 20. First nut; 21. Second limiting block; 22. Second inclined plane; 23. Slider; 24. Third inclined plane; 25. Fourth inclined plane; 26. Second wedge block; 27. Third wedge block; 28. Fifth inclined plane; 29. ​​Sixth inclined plane; 30. Second guide rod; 31. Second spring; 32. Second nut; 33. Guide plate; 34. Guide block; 35. Arc plate; 36. Conical block; 37. Fixing plate; 38. Second sliding plate; 39. First connecting rod; 40. Second connecting rod; 41. Limiting plate; 42. Protruding rod; 43. Third spring; 44. Pulley; 45. Torsion spring; 46. Third guide rod; 47. Fourth spring; 48. Groove; 49. Top block; 50. Seventh inclined plane; 51. Annular block; 52. Hydraulic cylinder; 53. Stepper motor; 54. Screw. Detailed Implementation

[0027] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined in this application.

[0028] This invention provides an automatic paper roll feeding device for a coating machine, such as... Figures 1-4As shown, the device includes a dual-station rotary winding mechanism and a feeding mechanism mounted on a frame 1 for use with a roll. The dual-station rotary winding mechanism includes a turntable 2 rotatably mounted on the frame 1, with a first winding roller 3 and a second winding roller 4 rotatably connected to the turntable 2. A first swing arm 5 and a second swing arm 6 are rotatably connected to the frame 1. The ends of the first swing arm 5 and the second swing arm 6 are respectively provided with a cutting mechanism 7 and a pressing roller 8 for use with the first winding roller 3 and the second winding roller 4. The feeding mechanism includes a first movable frame 9 slidably mounted laterally on the frame 1, with a second movable frame 10 slidably mounted longitudinally on the first movable frame 9. The two ends of the second movable frame 10 are respectively provided with a first push plate 11 and a second push plate 12 that contact the roll. An inclined plate 13 that contacts the roll is provided on the frame 1. The first limiting block 14 is in contact with the roll. Initially, the first take-up roller 3 drives the shaft core to rotate and take up the coated paper roll. The outer diameter of the coated paper roll is monitored in real time by the sensor. When the roll diameter reaches the set value, the roll change signal is triggered. By rotating the turntable 2 on the frame 1, the fully rolled first take-up roller 3 is rotated to the unloading position, and at the same time, the second take-up roller 4 with the pre-loaded empty shaft core is rotated to the take-up position. Then, by swinging the first swing arm 5 and the second swing arm 6 on the frame 1, the cutting mechanism 7 and the pressure roller 8 on the first swing arm 5 and the second swing arm 6 are moved to the unloading position and the loading position, respectively. Then, the cutter 7 cuts the roll material, and at the same time, the pressure roller 8 contacts the roll head and presses it firmly onto the new shaft core of the second take-up roller 4. Then, by rotating the second take-up roller 4, a new round of take-up continues. There is no need to stop the machine to wait for the roll change, which avoids discontinuous take-up operations and improves the overall production efficiency of the machine. Additionally, by sliding the first movable frame 9 laterally on the frame 1, the second movable frame 10, the first push plate 11, and the second push plate 12 slide together on the first movable frame 9, causing the first push plate 11 and the second push plate 12 to move to both sides of the fully wound first take-up roller 3. By sliding the second movable frame 10 longitudinally on the first movable frame 9, the first push plate 11 slides longitudinally, causing the first push plate 11 to contact the fully wound drum, causing the fully wound drum to detach from the first take-up roller 3 and move to above the inclined plate 13 until the drum completely falls off the first take-up roller 3 and onto the inclined plate 13. Guided by the inclined plate 13, the fully wound drum falls... In the next process, the first limiting block 14 is slid on the inclined plate 13 to release the restriction on the empty roll sliding on the inclined plate 13. Under the action of the empty roll's own weight, the empty roll slides on the inclined plate 13 and moves between the first push plate 11 and the second push plate 12. Then, the second movable frame 10 slides longitudinally on the first movable frame 9 in the opposite direction, so that the first push plate 11 comes into contact with the empty roll and drives the empty roll to move until the empty roll is sleeved on the outside of the shaft core of the first take-up roller 3. This realizes the unloading of the full roll and the loading of the empty roll without the need for manual disassembly of the old shaft core and assembly of the new shaft core, thereby reducing the labor intensity of workers and improving the production efficiency of the coating machine.

[0029] Preferred, such as Figure 4 and Figure 5 As shown, it also includes a first wedge block 15 slidably disposed on the inclined plate 13. One side of the first wedge block 15 has a first inclined surface 16 that contacts the drum. A first sliding plate 17 is slidably connected to the inclined plate 13. The first wedge block 15 and a first limiting block 14 are respectively disposed on both sides of the first sliding plate 17. The inclined plate 13 has several first guide rods 18 that slidably contact the first sliding plate 17. A first spring 19 is sleeved on the outer side of each first guide rod 18. A first nut 20 is provided at the end of each first guide rod 18. The first spring 19 is disposed between the first nut 20 and the first sliding plate 17. When the fully wound drum falls from the inclined plate 13, the fully wound drum contacts the first inclined surface 16 on one side of the first wedge block 15. The six phases are in contact, so that the weight of the fully wound drum is applied to the first wedge block 15. The resulting component force drives the first wedge block 15 to slide on the inclined plate 13, pushing the first slide plate 17 and the first limiting block 14 to slide together on the inclined plate 13, releasing the restriction on the empty drum, so that the lowest empty drum slides down the inclined plate 13. Then, when the fully wound drum slides past the first wedge block 15, under the action of the rebound force of the first spring 19, the first slide plate 17, the first wedge block 15 and the first limiting block 14 are reset, restricting the subsequent empty drum from moving further down, thereby realizing the automatic feeding of the lowest empty drum, and without the need for an additional power device to drive the first limiting block 14 to move, further reducing the space required for power device installation and the cost required for manufacturing.

[0030] Preferred, such as Figure 4 As shown, a second limiting block 21 is slidably connected to the inclined plate 13. The second limiting block 21 is provided with a second inclined surface 22 that contacts the drum. The second limiting block 21 restricts the subsequent downward movement of the drum, preventing the lowermost empty drum from moving down with it when the inclined plate 13 moves up and down, thereby realizing the single feeding of the empty drum.

[0031] Preferred, such as Figure 4 and Figure 5 As shown, a slider 23 is slidably connected to the inclined plate 13. A third inclined surface 24 and a fourth inclined surface 25 are respectively provided on both sides of the slider 23. A second wedge block 26 and a third wedge block 27 are respectively provided at the bottom of the first sliding plate 17 and the second limiting block 21. A fifth inclined surface 28 and a sixth inclined surface 29 that contact the third inclined surface 24 and the fourth inclined surface 25 are respectively provided on the second wedge block 26 and the third wedge block 27. Several second guide rods 30 are provided on the inclined plate 13, which slide in contact with the second limiting block 21. A second spring 31 is provided on the outer side of the second guide rod 30. A second nut 32 is provided on the second guide rod 30. The second spring 31 is positioned between the second nut 32 and the second limiting block 21. When the fully wound drum moves the first sliding plate 17 downwards, the fifth inclined surface 28 of the second wedge block 26 contacts the third inclined surface 24 on one side of the slider 23, thus moving the slider 23. Sliding on the inclined plate 13, the fourth inclined surface 25 on the other side of the slider 23 contacts the sixth inclined surface 29 of the third wedge block 27, causing the second limiting block 21 to slide on the inclined plate 13 until the end of the second limiting block 21 protrudes from the inclined plate 13, preventing the subsequent empty rolls from moving further down, and preventing the remaining empty rolls from moving down with the bottom empty roll when the inclined plate 13 moves up and down. When the first slide plate 17 returns to its original position, the second wedge block 26 no longer contacts the slider 23, and under the action of the rebound force of the second spring 31, it drives the second limiting block 21 to move down, releasing the restriction of the remaining empty rolls, allowing the remaining empty rolls to slide further on the inclined plate 13 until the bottom empty roll contacts the first limiting block 14, thereby realizing the single feeding of empty rolls, and without the need for an additional power device to drive the second limiting block 21 to move, further reducing the space required for power device installation and the cost required for manufacturing.

[0032] Preferred, such as Figure 4 and Figure 5As shown, the second push plate 12 and the inclined plate 13 are respectively provided with a guide plate 33 and a guide block 34 that slide in contact with the roll. The guide plate 33 and the guide block 34 are staggered to avoid interference with the guide block 34 when the first movable frame 9 drives the guide plate 33 to move. One end of the guide plate 33 is in contact with the inclined plate 13, and the other end of the guide plate 33 is provided with an arc plate 35 that contacts the roll. When the empty roll at the bottom slides on the inclined plate 13, it is guided by the guide plate 33 and the guide block 34 to fall onto the arc plate 35 at the end of the guide plate 33, so that the empty roll is concentric with the shaft of the first take-up roller 3. This makes it easier to put the empty roll on the outside of the first take-up roller, improve the stability of the equipment operation, and thus improve the production efficiency of the coating machine.

[0033] Preferred, such as Figure 6 As shown, the ends of the first take-up roller 3 and the second take-up roller 4 are both provided with conical blocks 36 that contact the roll, which correct the position of the roll and make the empty roll concentric with the shaft of the first take-up roller 3. This makes it easier to put the empty roll on the outside of the first take-up roller, improve the stability of the equipment operation, and thus improve the production efficiency of the coating machine.

[0034] Preferred, such as Figures 6-8 As shown, both the first take-up roller 3 and the second take-up roller 4 are provided with a plurality of fixed plates 37. A second sliding plate 38 is slidably connected to the fixed plate 37. A plurality of first connecting rods 39 and second connecting rods 40 are rotatably connected to the fixed plate 37 and the second sliding plate 38, respectively. The roller also includes a plurality of limiting plates 41 that contact the drum. The first connecting rods 39 and the second connecting rods 40 are rotatably connected to both ends of the limiting plates 41. When winding is required, sliding the second sliding plate 38 on the fixed plate 37 causes one end of each of the first connecting rods 39 to move together. Since both ends of the first connecting rods 39 rotate with the second sliding plate 38 and the limiting plates 41, respectively... The connection is such that the two ends of the second connecting rod 40 are rotatably connected to the fixed plate 37 and the limiting plate 41 respectively, so that several limiting plates 41 can be translated on the fixed plate 37 to realize the retraction of the shaft core of the first take-up roller 3. This facilitates the removal of the fully rolled roll from the shaft core and the subsequent installation of the empty roll on the shaft core, improving the efficiency of removing and mounting the roll. In addition, after the roll is mounted on the shaft core, the second sliding plate 38 is slid in the opposite direction on the fixed plate 37, so that several limiting plates 41 can be translated in the opposite direction on the fixed plate 37 to realize the expansion of the shaft core of the first take-up roller 3, which firmly fixes the roll on the first take-up roller 3, improving the production efficiency and quality of the coating machine.

[0035] Preferred, such as Figures 6-9As shown, a protruding rod 42 is slidably connected to one end of the second sliding plate 38. A third spring 43 is provided between the protruding rod 42 and the slider 23. Several levers 44 that contact the protruding rod 42 are rotatably connected to the first push plate 11. The levers 44 contact the protruding rod 42, causing the second sliding plate 38 to slide on the fixed plate 37 until the limiting plate 41, the first connecting rod 39, and the second connecting rod 40 are on the same straight line. A torsion spring 45 is provided between the levers 44 and the first push plate 11. A third guide rod 46 that is slidably connected to the fixed plate 37 is provided on the second sliding plate 38. A fourth spring 47 is sleeved on the outer side of the third guide rod 46. The fourth spring 47 is disposed between the fixed plate 37 and the second slide plate 38. The second slide plate 38 has a groove 48, and a top block 49 that is in contact with the first connecting rod 39 is slidably connected to the groove 48. A seventh inclined surface 50 that is in slidable contact with the top block 49 is provided on one side of the groove 48. A pull rope is provided between one of the top blocks 49 and the protruding rod 42, and between adjacent top blocks 49. It also includes an annular block 51 connected to several protruding rods 42. When it is necessary to rewind, the second movable frame 10 is driven to the first movable... The sliding mechanism slids on the moving frame 9, causing the lever 44 on the first push plate 11 to contact the corresponding protrusion 42, thus moving the corresponding protrusion 42. Since the annular block 51 is connected to several protrusions 42 simultaneously, it drives the remaining protrusions 42 to move together, causing several second slide plates 38 to slide on the fixed plate 37, compressing the fourth spring 47 between the fixed plate 37 and the slide plate. This causes several limiting plates 41 to translate on the fixed plate 37 until the limiting plates 41 are aligned with the first connecting rod 39 and the second connecting rod 40, at which point the lever 44 can no longer push the slide plate on the fixed plate 37. The sliding motion generates resistance that causes the lever 44 to rotate on the first push plate 11, stretching the torsion spring 45 between the lever 44 and the first push plate 11 until the lever 44 completely passes through the first push plate 11. Then, the lever 44 returns to its original position under the action of the torsion spring 45's rebound force. However, the first connecting rod 39, the second connecting rod 40, and the limiting plate 41 abut against each other, restricting the second sliding plate 38 from returning to its original position on the fixed plate 37. This ensures that the first take-up roller 3 is always in a retracted state, which facilitates the removal of the fully wound roll from the shaft core and the subsequent installation of the empty roll on the shaft core, thereby improving the efficiency of removing and mounting the roll. When the second push plate 12 drives the empty drum to be sleeved on the shaft core, the lever 44 on the first push plate 11 contacts the corresponding convex rod 42, causing the convex rod 42 to slide on the second slide plate 38. This, in turn, causes several top blocks 49 to slide within the groove 48 via a pull rope. Simultaneously, the top blocks 49 contact the seventh inclined surface 50 on one side of the groove 48, generating a component force that causes the top blocks 49 to slide on the second slide plate 38, making them contact the first connecting rod 39. The component force generated after contact causes the first connecting rod 39 to remain stationary. The plate 37 rotates, releasing the first link 39 and the second link 40 from contact with the limiting plate 41. Under the action of the rebound force of the fourth spring 47, the second slide plate 38 is driven to slide on the fixed plate 37, causing the arc plate 35 to move outward until the new roll is fixed on the shaft core. There is no need to set up an additional power drive to move the arc plate 35 on the fixed plate 37, which further reduces the space required for power unit installation and the cost required for manufacturing. At the same time, no additional programming control is required, which further reduces the programming difficulty of automated roll unloading of the coating machine.

[0036] Preferred, such as Figure 3 As shown, the frame 1 is equipped with a hydraulic cylinder 52. The movable end of the hydraulic cylinder 52 is connected to the first movable frame 9, providing power for the sliding of the first movable frame 9 on the frame 1. Specifically, a slider 23 and a slide rail can be provided to guide the sliding of the first movable frame 9 on the frame 1. The second movable frame 10 is equipped with a stepper motor 53. The first movable frame 9 is rotatably connected to a screw 54 that is threadedly connected to the second movable frame 10. The movable end of the stepper motor 53 is connected to the screw 54, which guides the sliding of the second movable frame 10 on the first movable frame 9.

[0037] A continuous production method for an automatic paper roll feeding device for a coating machine, such as... Figures 1-4 As shown, it includes the following steps: S1. Initially, the first take-up roller 3 drives the shaft core to rotate and take up the coated paper roll. The outer diameter of the coated paper roll is monitored in real time by the sensor. When the roll diameter reaches the set value, the roll change signal is triggered. By rotating the turntable 2 on the frame 1, the fully rolled first take-up roller 3 is rotated to the unloading position, and at the same time, the second take-up roller 4 with the pre-loaded empty shaft core is rotated to the take-up position. Then, by swinging the first swing arm 5 and the second swing arm 6 on the frame 1, the cutting mechanism 7 and the pressure roller 8 on the first swing arm 5 and the second swing arm 6 are moved to the unloading position and the loading position, respectively. Then, the cutter 7 cuts the roll material, and at the same time, the pressure roller 8 contacts the roll head and presses it firmly onto the new shaft core of the second take-up roller 4. Then, by rotating the second take-up roller 4, a new round of take-up continues. There is no need to stop the machine to wait for the roll change, which avoids discontinuous take-up operations and improves the overall production efficiency of the machine. S2. By sliding the first movable frame 9 laterally on the frame 1, the second movable frame 10, the first push plate 11, and the second push plate 12 slide together on the first movable frame 9, so that the first push plate 11 and the second push plate 12 move to both sides of the fully wound first take-up roller 3. By sliding the second movable frame 10 longitudinally on the first movable frame 9, the first push plate 11 slides longitudinally, so that the first push plate 11 contacts the fully wound roll, causing the fully wound roll to detach from the first take-up roller 3 and move to the top of the inclined plate 13 until the roll completely falls off the first take-up roller 3 and onto the inclined plate 13. Guided by the inclined plate 13, the fully wound roll falls to the next process. S3. Slide the first limiting block 14 on the inclined plate 13 to release the restriction on the empty roll sliding on the inclined plate 13. Under the action of the empty roll's own weight, the empty roll slides on the inclined plate 13 and moves between the first push plate 11 and the second push plate 12. Then, slide the second movable frame 10 longitudinally on the first movable frame 9 in the opposite direction, so that the first push plate 11 contacts the empty roll and drives the empty roll to move until the empty roll is sleeved on the outside of the shaft core of the first take-up roller 3. This realizes the unloading of the full roll and the loading of the empty roll without the need for manual disassembly of the old shaft core and assembly of the new shaft core, thereby reducing the labor intensity of workers and improving the production efficiency of the coating machine.

[0038] Example 1 This invention provides an automatic paper roll feeding device and a continuous production method for a coating machine, such as... Figures 1-4 As shown, initially, the first take-up roller 3 drives the shaft core to rotate and take up the coated paper roll. The outer diameter of the coated paper roll is monitored in real time by a sensor. When the roll diameter reaches the set value, a roll change signal is triggered. By rotating the turntable 2 on the frame 1, the fully rolled first take-up roller 3 is rotated to the unloading position, and at the same time, the second take-up roller 4 with the pre-loaded empty shaft core is rotated to the take-up position. Then, by swinging the first swing arm 5 and the second swing arm 6 on the frame 1, the cutting mechanism 7 and the pressure roller 8 on the first swing arm 5 and the second swing arm 6 are moved to the unloading position and the loading position, respectively. Then, the cutter 7 cuts the roll material, and at the same time, the pressure roller 8 contacts the roll head and presses it firmly onto the new shaft core of the second take-up roller 4. Then, by rotating the second take-up roller 4, a new round of take-up continues. There is no need to stop the machine to wait for roll change, avoiding discontinuous take-up operations and improving the overall production efficiency of the machine. Additionally, by sliding the first movable frame 9 laterally on the frame 1, the second movable frame 10, the first push plate 11, and the second push plate 12 slide together on the first movable frame 9, causing the first push plate 11 and the second push plate 12 to move to both sides of the fully wound first take-up roller 3. By sliding the second movable frame 10 longitudinally on the first movable frame 9, the first push plate 11 slides longitudinally, causing the first push plate 11 to contact the fully wound drum, causing the fully wound drum to detach from the first take-up roller 3 and move to above the inclined plate 13 until the drum completely falls off the first take-up roller 3 and onto the inclined plate 13. Guided by the inclined plate 13, the fully wound drum falls... In the next process, the first limiting block 14 is slid on the inclined plate 13 to release the restriction on the empty roll sliding on the inclined plate 13. Under the action of the empty roll's own weight, the empty roll slides on the inclined plate 13 and moves between the first push plate 11 and the second push plate 12. Then, the second movable frame 10 slides longitudinally on the first movable frame 9 in the opposite direction, so that the first push plate 11 comes into contact with the empty roll and drives the empty roll to move until the empty roll is sleeved on the outside of the shaft core of the first take-up roller 3. This realizes the unloading of the full roll and the loading of the empty roll without the need for manual disassembly of the old shaft core and assembly of the new shaft core, thereby reducing the labor intensity of workers and improving the production efficiency of the coating machine.

[0039] Example 2 Based on Example 1, such as Figures 3-5 As shown, when a fully wound roll falls from the inclined plate 13, it comes into contact with the first inclined surface 16 on one side of the first wedge block 15. The weight of the fully wound roll itself is applied to the first wedge block 15, and the resulting component force drives the first wedge block 15 to slide on the inclined plate 13. This pushes the first slide plate 17 and the first limiting block 14 to slide together on the inclined plate 13, releasing the restriction on the empty roll. This allows the lowest empty roll to slide down the inclined plate 13. Then, when the fully wound roll slides past the first wedge block 15, the first slide plate 17, the first wedge block 15, and the first limiting block 14 are reset under the action of the rebound force of the first spring 19, restricting the subsequent empty roll from moving further down. This achieves automatic feeding of the lowest empty roll without the need for an additional power device to drive the first limiting block 14 to move, further reducing the space required for power device installation and the cost required for manufacturing. As the fully wound drum moves the first slide plate 17 downwards, the fifth inclined surface 28 of the second wedge block 26 contacts the third inclined surface 24 on one side of the slider 23, causing the slider 23 to slide on the inclined plate 13. This causes the fourth inclined surface 25 on the other side of the slider 23 to contact the sixth inclined surface 29 of the third wedge block 27, causing the second limiting block 21 to slide on the inclined plate 13 until the end of the second limiting block 21 protrudes from the inclined plate 13, preventing the subsequent empty drum from moving further downwards. This prevents the remaining empty drums from following the bottommost empty drum as it moves up and down the inclined plate 13. As it moves downwards, when the first slide plate 17 returns to its original position, the second wedge block 26 no longer contacts the slider 23. Under the action of the rebound force of the second spring 31, the second limiting block 21 moves downwards, releasing the restriction on the remaining empty drums. This allows the remaining empty drums to slide further on the inclined plate 13 until the lowest empty drum contacts the first limiting block 14, thereby achieving single loading of empty drums without the need for an additional power device to drive the second limiting block 21 to move. This further reduces the space required for power device installation and the cost required for manufacturing. When the empty roll at the bottom slides on the inclined plate 13, guided by the guide plate 33 and the guide block 34, the empty roll falls onto the arc plate 35 at the end of the guide plate 33, making the empty roll concentric with the shaft of the first take-up roller 3. Then, by sliding the second movable frame 10 on the first movable frame 9, the second push plate 12 and the empty roll move together. Then, one end of the empty roll contacts the conical block 36, correcting the position of the roll, making the empty roll concentric with the shaft of the first take-up roller 3. This makes it easier to fit the empty roll on the outside of the first take-up roller, improving the stability of the equipment operation and thus improving the production efficiency of the coating machine.

[0040] Example 3 Based on Example 2, such as Figures 6-9As shown, when winding is required, the second movable frame 10 is driven to slide on the first movable frame 9, causing the lever 44 on the first push plate 11 to contact the corresponding protrusion 42, thus moving the corresponding protrusion 42. Since the annular block 51 is connected to several protrusions 42 simultaneously, it drives the remaining protrusions 42 to move together, causing several second slide plates 38 to slide on the fixed plate 37 respectively, compressing the fourth spring 47 between the fixed plate 37 and the slide plate, and causing one end of several first connecting rods 39 to move together. Since the two ends of the first connecting rods 39 are rotatably connected to the second slide plates 38 and the limiting plate 41 respectively, and the two ends of the second connecting rods 40 are rotatably connected to the fixed plate 37 and the limiting plate 41 respectively, several limiting plates 41 are moved on the fixed plate 37. The slide is moved until the limiting plate 41 is on the same straight line as the first link 39 and the second link 40. The lever 44 can no longer push the slide plate on the fixed plate 37. The resulting resistance causes the lever 44 to rotate on the first push plate 11, stretching the torsion spring 45 between the lever 44 and the first push plate 11 until the lever 44 completely passes through the first push plate 11. Then the lever 44 is reset under the action of the torsion spring 45. However, the first link 39, the second link 40 and the limiting plate 41 abut against each other, restricting the second slide plate 38 from resetting on the fixed plate 37. This ensures that the first take-up roller 3 is always in a retracted state, which makes it easy to remove the fully wound roll from the shaft core and to install the empty roll on the shaft core, thus improving the efficiency of removing and mounting the roll. When the second push plate 12 drives the empty drum to be sleeved on the shaft core, the lever 44 on the first push plate 11 contacts the corresponding convex rod 42, causing the convex rod 42 to slide on the second slide plate 38. This, in turn, causes several top blocks 49 to slide within the groove 48 via a pull rope. Simultaneously, the top blocks 49 contact the seventh inclined surface 50 on one side of the groove 48, generating a component force that causes the top blocks 49 to slide on the second slide plate 38, making them contact the first connecting rod 39. The component force generated after contact causes the first connecting rod 39 to remain stationary. The plate 37 rotates, releasing the first link 39 and the second link 40 from contact with the limiting plate 41. Under the action of the rebound force of the fourth spring 47, the second slide plate 38 is driven to slide on the fixed plate 37, causing the arc plate 35 to move outward until the new roll is fixed on the shaft core. There is no need to set up an additional power drive to move the arc plate 35 on the fixed plate 37, which further reduces the space required for power unit installation and the cost required for manufacturing. At the same time, no additional programming control is required, which further reduces the programming difficulty of automated roll unloading of the coating machine.

Claims

1. An automatic unloading device for a coating machine roll, comprising a dual-station rotary winding mechanism and an unloading mechanism mounted on a frame (1) and used in conjunction with a roll, characterized in that: The dual-station rotary winding mechanism includes a turntable (2) rotatably mounted on a frame (1), a first winding roller (3) and a second winding roller (4) rotatably connected to the turntable (2), a first swing arm (5) and a second swing arm (6) rotatably connected to the frame (1), and a cutting mechanism (7) and a pressing roller (8) respectively provided at the ends of the first swing arm (5) and the second swing arm (6) for use with the first winding roller (3) and the second winding roller (4). The feeding mechanism includes a first movable frame (9) slidably mounted on the frame (1) in the transverse direction, a second movable frame (10) slidably mounted on the first movable frame (9) in the longitudinal direction, and a first push plate (11) and a second push plate (12) respectively provided at both ends of the second movable frame (10) for contact with the roll. An inclined plate (13) is provided on the frame (1) for contact with the roll, and a first limiting block (14) for contact with the roll is slidably connected on the inclined plate (13).

2. The automatic paper roll feeding device for a coating machine according to claim 1, characterized in that: It also includes a first wedge block (15) slidably disposed on the inclined plate (13), one side of the first wedge block (15) is provided with a first inclined surface (16) that contacts the drum, a first slide plate (17) is slidably connected on the inclined plate (13), the first wedge block (15) and the first limiting block (14) are respectively disposed on both sides of the first slide plate (17), a plurality of first guide rods (18) are provided on the inclined plate (13) that slide in contact with the first slide plate (17), a first spring (19) is sleeved on the outside of the first guide rod (18), a first nut (20) is provided at the end of the first guide rod (18), and the first spring (19) is disposed between the first nut (20) and the first slide plate (17).

3. The automatic paper roll feeding device for a coating machine according to claim 2, characterized in that: The inclined plate (13) is slidably connected to a second limiting block (21), and the second limiting block (21) is provided with a second inclined surface (22) that contacts the drum.

4. The automatic paper roll feeding device for a coating machine according to claim 3, characterized in that: A slider (23) is slidably connected to the inclined plate (13). The slider (23) has a third inclined surface (24) and a fourth inclined surface (25) on its two sides respectively. The bottom of the first sliding plate (17) and the second limiting block (21) is provided with a second wedge block (26) and a third wedge block (27) respectively. The second wedge block (26) and the third wedge block (27) are provided with a fifth inclined surface (28) and a sixth inclined surface (29) that are in contact with the third inclined surface (24) and the fourth inclined surface (25) respectively. The inclined plate (13) is provided with a plurality of second guide rods (30) that are in sliding contact with the second limiting block (21). The second guide rod (30) is provided with a second spring (31) on its outer side. The second guide rod (30) is provided with a second nut (32). The second spring (31) is located between the second nut (32) and the second limiting block (21).

5. The automatic paper roll feeding device for a coating machine according to claim 1, characterized in that: The second push plate (12) and the inclined plate (13) are respectively provided with a guide plate (33) and a guide block (34) that slide in contact with the drum. The guide plate (33) and the guide block (34) are offset. One end of the guide plate (33) is in contact with the inclined plate (13), and the other end of the guide plate (33) is provided with an arc plate (35) that is in contact with the drum.

6. The automatic paper roll feeding device for a coating machine according to claim 1, characterized in that: The ends of the first take-up roller (3) and the second take-up roller (4) are provided with conical blocks (36) that contact the drum.

7. The automatic paper roll feeding device for a coating machine according to claim 1, characterized in that: The first take-up roller (3) and the second take-up roller (4) are each provided with a number of fixed plates (37). The fixed plates (37) are slidably connected to the second slide plates (38). The fixed plates (37) and the second slide plates (38) are respectively rotatably connected to a number of first connecting rods (39) and second connecting rods (40). The roller also includes a number of limiting plates (41) that are in contact with the drum. The first connecting rods (39) and the second connecting rods (40) are respectively rotatably connected to the two ends of the limiting plates (41).

8. The automatic paper roll feeding device for a coating machine according to claim 7, characterized in that: One end of the second slide plate (38) is slidably connected to a protruding rod (42). A third spring (43) is provided between the protruding rod (42) and the slider (23). Several paddle blocks (44) that contact the protruding rod (42) are rotatably connected to the first push plate (11). The paddle blocks (44) contact the protruding rod (42) and drive the second slide plate (38) to slide on the fixed plate (37) until the limiting plate (41) is on the same straight line as the first connecting rod (39) and the second connecting rod (40). A torsion spring (45) is provided between the paddle block (44) and the first push plate (11). The second slide plate (38) is slidably connected to the fixed plate (37). The third guide rod (46) is fitted with a fourth spring (47) on its outer side. The fourth spring (47) is set between the fixed plate (37) and the second slide plate (38). The second slide plate (38) is provided with a groove (48). A top block (49) that contacts the first connecting rod (39) is slidably connected to the groove (48). A seventh inclined surface (50) that slidably contacts the top block (49) is provided on one side of the groove (48). A pull rope is provided between one of the top blocks (49) and the protruding rod (42) and between adjacent top blocks (49). The third guide rod (46) is also provided with an annular block (51) connected to several protruding rods (42).

9. The automatic paper roll feeding device for a coating machine according to claim 1, characterized in that: The frame (1) is provided with a hydraulic cylinder (52), the movable end of the hydraulic cylinder (52) is connected to the first movable frame (9), the second movable frame (10) is provided with a stepper motor (53), the first movable frame (9) is rotatably connected with a screw (54) threadedly connected to the second movable frame (10), and the movable end of the stepper motor (53) is connected to the screw (54).

10. The continuous production method of the automatic paper roll feeding device for a coating machine according to claim 1, characterized in that: Includes the following steps: S1. Initially, the first take-up roller (3) drives the shaft core to rotate and take up the coated paper roll. The outer diameter of the coated paper roll is monitored in real time by the sensor. When the roll diameter reaches the set value, the roll change signal is triggered. By rotating the turntable (2) on the frame (1), the full roll of the first take-up roller (3) is rotated to the unloading position. At the same time, the second take-up roller (4) with the empty shaft core is rotated to the take-up position. Then, by swinging the first swing arm (5) and the second swing arm (6) on the frame (1), the cutting mechanism (7) and the pressure roller (8) on the first swing arm (5) and the second swing arm (6) are moved to the unloading position and the loading position, respectively. Then, the roll material is cut by the cutting mechanism (7). At the same time, the pressure roller (8) contacts the roll head and presses it to the new shaft core of the second take-up roller (4). Then, by rotating the second take-up roller (4), a new round of take-up continues. S2. Slide the first movable frame (9) laterally on the frame (1), and drive the second movable frame (10), the first push plate (11) and the second push plate (12) to slide together on the first movable frame (9), so that the first push plate (11) and the second push plate (12) move to both sides of the fully wound first take-up roller (3). By sliding the second movable frame (10) longitudinally on the first movable frame (9), drive the first push plate (11) to slide longitudinally, so that the first push plate (11) contacts the fully wound roll, and drive the fully wound roll to detach from the first take-up roller (3) and move to the top of the inclined plate (13) until the roll completely falls off the first take-up roller (3) and falls onto the inclined plate (13). Guided by the inclined plate (13), the fully wound roll falls to the next process. S3. Slide the first limiting block (14) on the inclined plate (13) to release the restriction on the empty drum sliding on the inclined plate (13). Under the action of the empty drum's own weight, the empty drum slides on the inclined plate (13) and moves between the first push plate (11) and the second push plate (12). Then, slide the second movable frame (10) longitudinally on the first movable frame (9) in the opposite direction, so that the first push plate (11) contacts the empty drum and drives the empty drum to move until the empty drum is sleeved on the outside of the shaft core of the first take-up roller (3), realizing the unloading of the full roll drum and the loading of the empty drum.

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