A fully biodegradable diaper printing machine

Abstract

The present invention discloses a fully degradable diaper printing machine, which relates to the technical field of diaper printing, and includes a support seat, a common plate, and a loading platform. A horizontal frame is fixedly arranged at the top edge of the support seat, and a support platform is vertically fixedly arranged on a side of the support seat away from the horizontal frame. The present invention is provided with a composite flattening component on both sides of the horizontal frame, and the core component of the composite flattening component is a flattening roller, and a path planning component for planning the displacement path of the flattening roller is arranged on the side of the composite flattening component. The path planning component controls the flattening roller to first extend to the top of the diaper, press down the diaper, and flatten the diaper. The flattening roller makes the surface of the diaper smoother through uniform pressure distribution, eliminates wrinkles and irregularities, and ensures stability and quality during printing. In addition, the flattening action can effectively reduce the blurring or deformation of the pattern caused by the uneven surface during the printing process, and improve the appearance consistency and precision of the product.

Description

Technical Field

[0001] The invention relates to the technical field of diaper printing, and in particular to a fully degradable diaper printing machine. Background Art

[0002] Fully degradable diapers are environmentally friendly diapers made of degradable materials that can decompose in the natural environment and reduce pollution to the environment. The production process may involve the printing of patterns, brand logos or information to enhance the appearance or convey product information. The printing device is used to print these patterns on the surface of diapers. Screen printing is a common method. Screen printing transfers ink accurately to the material through the screen. It is suitable for soft surfaces, and the printing effect is durable and clear, which can meet the high requirements of fully degradable diapers for environmental protection, safety and clarity.

[0003] In order to ensure that there is no movement during the printing process, thereby ensuring the accurate positioning of the pattern and the uniformity and consistency of the printing effect, the diapers need to be fixed by a fixed structure. In the prior art, diapers are mostly fixed by a cylinder-driven fixed structure that is directly pressed on the top of the diaper during screen printing. Since the diapers are elastic, the surface of the diapers will be flat, resulting in blurred and uneven patterns, or even missing or deformation, which reduces the clarity and quality of the printing. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that in the prior art, diapers are mostly screen-printed using a cylinder-driven fixed structure that directly presses the top of the diaper. Due to the elasticity of the diaper, the surface of the diaper will be flat, resulting in blurred and uneven patterns, or even missing or deformed patterns, thereby reducing the clarity and quality of the printing. A fully biodegradable diaper printing machine is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A fully biodegradable diaper printing machine comprises a support base, a common plate and a loading platform, wherein a horizontal frame is fixedly provided at the top edge position of the support base, a support platform is vertically fixedly provided on a side of the support base away from the horizontal frame, a servo motor is fixedly provided at the bottom of the support platform, a common plate is fixedly provided at the output end of the servo motor, a loading platform is provided in a circular array on the top of the common plate, a lifting frame is rotatably connected to an end of the horizontal frame away from the common plate, a screen plate is fixedly provided on the bottom of the lifting frame away from the side of the horizontal frame, a screen printing component for scraping ink on the screen plate is provided on the top of the lifting frame, a lifting drive component is provided on the top of the lifting frame for automatically lifting the screen printing component after printing a single diaper, so that the next diaper can enter the printing station, fixing rods are vertically fixedly provided on both sides of the screen printing component of the horizontal frame, and a composite flattening component for first fixing and then flattening the diaper is provided on the top of the fixing rods.

[0007] Optionally, the screen printing assembly includes a transverse rod, a driving rod, an ink scraper rod, and a horizontal column. Both ends of the transverse rod are cylindrical, and both ends of the transverse rod are movably inserted into the guide light column. Support rods are vertically fixed at both ends of the guide light column, and the bottom of the support rod is vertically fixed on the top of the lifting frame. A vertical frame is vertically fixed at the middle position of the transverse rod, and the side of the vertical frame is equidistantly threaded with supporting bolts along the vertical direction. The length of the supporting bolts at the top of the side of the vertical frame screwed into the inner cavity of the vertical frame is greater than the length of the supporting bolts at the bottom of the side of the vertical frame screwed into the inner cavity of the vertical frame. A horizontal column is fixed on the side of the vertical frame, and the outer wall of the horizontal column is rotatably connected to the vertical rod, and there is a gap between the side of the head of the vertical rod and the side of the inner cavity of the vertical frame.

[0008] Optionally, the lifting drive assembly includes a support wheel, a dual-axis motor, and a lifting cam. The dual-axis motor is fixedly arranged in the middle position of the side of the inverted U-frame, the bottom of the inverted U-frame is fixedly arranged on the top of the lifting frame, the output end of the dual-axis motor is fixedly provided with a lifting cam, the horizontal frame is rotatably connected to the bottom of the lifting cam with a support wheel, the outer wall of the support wheel is in contact with the outer wall of the lifting cam, the outer wall of the output end of the dual-axis motor is fixedly provided with an angle sensor, and the angle sensor housing is fixedly provided on the outer wall of the dual-axis motor housing.

[0009] Optionally, a driving rod is fixedly provided on the side of the lifting cam, the end of the driving rod is rotatably connected to a pulling rod, and the other end of the pulling rod is rotatably connected to the side of the vertical rod.

[0010] Optionally, the composite flattening assembly includes a flattening roller, a horizontal U-rod, a driven rod, a step rod, and a flattening cam. The horizontal U-rod is rotatably connected to the flattening roller on the side, a driven rod is fixedly arranged at the side edge of the horizontal U-rod, and a path planning assembly for planning the displacement path of the flattening roller is arranged on the fixed rod below the flattening roller.

[0011] Optionally, a flattening cam is fixedly provided at the end of the output end of the dual-axis motor, and the outer walls of the flattening cam and the lifting cam are sequentially provided with a transition straight line segment, a small arc segment, and a large arc segment, and the transition straight line segment, the small arc segment, and the large arc segment are fixedly connected end to end in sequence, and the curvature radius of the small arc segment is smaller than the curvature radius of the large arc segment.

[0012] Optionally, the path planning component includes a vertical plate, a transverse guide rod, a guide frame, and a vertical column. A vertical plate is vertically fixed on the top of the fixed rod away from one end of the horizontal frame. A sliding slope, a vertical surface, and a flattening slope are sequentially provided on the side of the vertical plate along the vertical direction. A transverse guide rod is fixed on the top of the vertical plate. A horizontal hole is provided on the side of the transverse guide rod, and a guide column is movably inserted into the side of the horizontal hole.

[0013] Optionally, the outer wall of the guide column is fixedly connected to one end of the connecting spring, a transverse groove is provided on the top of the transverse guide rod, the other end of the connecting spring is fixedly connected to the side of the transverse groove, and the other end of the guide column is fixedly connected to the side of the guide frame.

[0014] Optionally, a vertical groove is opened on the side of the guide frame, the bottom of the vertical groove is fixedly connected to one end of the vertical spring, the top of the vertical spring is connected to the bottom of the extension block, and the other end of the extension block is fixedly connected to the side of the vertical column.

[0015] Optionally, a vertical column is movably inserted into the guide frame along the vertical direction, the bottom of the vertical column is fixedly connected to the top of the driven rod, a step rod is fixedly provided on the side of the driven rod, and the step rod extends under the flattening cam.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. The present invention is provided with a composite flattening component on both sides of the horizontal frame. The core component of the composite flattening component is a flattening roller, and a path planning component for planning the displacement path of the flattening roller is provided on the side of the composite flattening component. The path planning component controls the flattening roller to first extend to the top of the diaper, press down the diaper, and flatten the diaper. The flattening roller makes the surface of the diaper smoother through uniform pressure distribution, eliminates wrinkles and irregularities, and ensures stability and quality during printing. In addition, the flattening action can effectively reduce the blurring or deformation of the pattern caused by the uneven surface during the printing process, and improve the appearance consistency and accuracy of the product. Finally, the automatic operation of path planning reduces manual intervention, improves production efficiency and operational stability, and reduces human errors in production.

[0018] 2. The present invention is provided with a device on the side of the support seat that can drive the diaper gap to enter under the screen printing component, and a lifting drive component is provided at the bottom of the screen printing component. The lifting drive component can not only automatically lift the screen printing component and maintain it at a certain height and keep it in a suspended state through a simple rotation action of a lifting cam after the screen printing component prints on the top of a diaper, so as to facilitate the new diaper to enter the printing station and optimize the connection in the production process, but also can drive the screen printing component to return to the starting printing position of the screen plate, and during the period when the screen printing component returns to the starting printing position of the screen plate, the ink scraping rod in the screen printing station assembly stops scraping ink, ensuring that no ink waste or accidental scraping occurs during the resetting process. This design structure is not only ingenious and has a high degree of automation and intelligence, but also the entire system has a compact structure, reduces the need for complex mechanical components, and helps to improve production efficiency and reduce maintenance costs.

[0019] 3. The path planning component of the present invention that performs path planning for the flattening roller is linked to the lifting drive component. When the lifting drive component automatically lifts the screen printing component and maintains it at a certain height and in a suspended state through a simple rotation action of a lifting cam, when the new diaper enters the screen printing station, the continuous rotation of the lifting cam can drive the coaxially rotating flattening cam to continuously drive the path planning component to perform path planning for the flattening roller. At this time, the flattening roller can quickly and accurately flatten the surface of the diaper to ensure its flatness and provide optimal conditions for subsequent printing operations. This linkage design simplifies the control logic, reduces the repeated operation of independent components, and significantly improves work efficiency. At the same time, it ensures printing accuracy and the degree of automation of diaper processing, which helps to improve the overall stability and consistency of the production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 for Figure 1 Another perspective structural diagram of .

[0022] Figure 3 for Figure 1 Schematic diagram of the structure viewed from above.

[0023] Figure 4 Schematic diagram of the structure of the screen-printed bracket.

[0024] Figure 5 for Figure 4 Schematic diagram of the structure for installing the screen printing components.

[0025] Figure 6 It is a schematic diagram of the structure of the lifting cam and its connecting parts.

[0026] Figure 7 It is a structural schematic diagram of the flattening cam.

[0027] Figure 8 Schematic diagram of the structure of the screen printing component.

[0028] Fig. 9 for Figure 8 Schematic diagram of the local enlarged structure at A.

[0029] Fig.10 for Figure 8 Another perspective structural diagram of .

[0030] Fig.11 Schematic diagram of the structure of the path planning component of the composite flattening component.

[0031] Fig.12 It is a schematic diagram of the structure of the composite flattening component and its connecting parts.

[0032] Fig.13 It is a schematic diagram of the structure of the composite flattening component.

[0033] Fig.14 It is a schematic diagram of the structure of the driven rod and its connecting parts.

[0034] In the figure: 1, support seat; 2, common plate; 3, loading platform; 4, horizontal frame; 5, lifting frame; 6, support platform; 7, servo motor; 8, support rod; 9, screen plate; 10, guide light column; 11, support wheel; 12, inverted U frame; 13, driving rod; 14, lifting cam; 15, dual-axis motor; 151, angle sensor; 16, flattening cam; 161, transition straight line segment; 162, small arc segment; 163, large arc segment; 17, pulling rod; 18, vertical rod; 19, horizontal shift rod; 2 0. Ink scraping rod; 21. Vertical frame; 22. Horizontal column; 23. Retaining bolt; 24. Transverse slot; 25. Transverse guide rod; 26. Horizontal hole; 27. Fixed rod; 28. Vertical plate; 281. Pushing inclined plane; 282. Vertical plane; 283. Flattening inclined plane; 29. ​​Horizontal U rod; 30. Flattening roller; 31. Guide column; 32. Follower rod; 33. Connecting spring; 34. Guide frame; 35. Vertical column; 36. Step rod; 37. Extension block; 38. Vertical spring; 39. Vertical slot. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0036] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] Reference Figure 1-14A fully biodegradable diaper printing machine includes a support base 1, a common plate 2, and a loading platform 3. A horizontal frame 4 is fixedly arranged at the top edge of the support base 1, a support platform 6 is vertically fixedly arranged on a side of the support base 1 away from the horizontal frame 4, a servo motor 7 is fixedly arranged at the bottom of the support platform 6, and the common plate 2 is fixedly arranged at the output end of the servo motor 7. When set, the horizontal frame 4 is located somewhere on the top of the common plate 2, and a loading platform 3 is arranged in a circular array on the top of the common plate 2. The loading platform 3 is used to place diapers to be printed. Furthermore, the cavity at the top of the loading platform 3 can be the same as the top-view cross-sectional size of the diaper (not drawn in the figure), which is used for simple positioning of the diaper.

[0038] The horizontal frame 4 is rotatably connected to one end of the common plate 2, and a lifting frame 5 is fixedly provided with a screen plate 9 on one side of the bottom of the lifting frame 5 away from the horizontal frame 4. A screen printing assembly for scraping ink on the screen plate 9 is provided on the top of the lifting frame 5. The screen plate 9 is specifically the pattern to be printed on the top of the diaper. The screen printing assembly includes a transverse rod 19, a driving rod 13, an ink scraping rod 20, and a horizontal column 22. The two ends of the transverse rod 19 are cylindrical, and the two ends of the transverse rod 19 are movably inserted into the guide light column 10. The outer wall of the guide light column 10 and the outer wall of the transverse rod 19 are both polished into a smooth surface. The guide light column 10 assists the transverse rod 19 to drive the ink scraping rod 20 to move horizontally along the top of the screen plate 9 to scrape ink. The lifting frame 5 forms a certain cavity ink storage space on the top of the screen plate 9.

[0039] Support rods 8 are vertically fixed at both ends of the guide light column 10, the bottom of the support rod 8 is vertically fixed on the top of the lifting frame 5, and a vertical frame 21 is vertically fixed in the middle position of the transverse rod 19. The side of the vertical frame 21 has supporting bolts 23 screwed into the vertical direction at equal intervals. The length of the supporting bolts 23 at the top of the side of the vertical frame 21 screwed into the inner cavity of the vertical frame 21 is greater than the length of the supporting bolts 23 at the bottom of the side of the vertical frame 21 screwed into the inner cavity of the vertical frame 21.

[0040] A horizontal column 22 is fixedly provided on the side of the vertical frame 21, and the outer wall of the horizontal column 22 is rotatably connected to the vertical rod 18. There is a gap between the side of the head of the vertical rod 18 and the side of the inner cavity of the vertical frame 21, leaving enough space for the head of the vertical rod 18 to rotate. The connection between the driving rod 13 and the vertical rod 18 is located below the horizontal column 22. Therefore, when the driving rod 13 pulls the vertical rod 18, the head of the vertical rod 18 abuts against the abutting bolt 23 at the top of the side of the vertical frame 21. At this time, the ink scraping rod 20 is perpendicular to the top of the screen plate 9, and the ink is scraped from the top of the screen plate 9. When the driving rod 13 pushes the vertical rod 18, the head of the vertical rod 18 abuts against the abutting bolt 23 at the bottom of the side of the vertical frame 21. The ink scraping rod 20 and the top surface of the screen plate 9 are at an acute angle, and the ink scraping rod 20 stops scraping ink.

[0041] A lifting drive assembly is arranged on the top of the lifting frame 5, which automatically lifts the screen printing assembly after the screen printing assembly prints a single diaper to facilitate the next diaper to enter the printing station. The lifting drive assembly includes a support wheel 11, a dual-axis motor 15, and a lifting cam 14. The dual-axis motor 15 is fixedly arranged in the middle position of the side of the inverted U-frame 12, and the bottom of the inverted U-frame 12 is fixedly arranged on the top of the lifting frame 5. The output end of the dual-axis motor 15 is fixedly provided with a lifting cam 14. The horizontal frame 4 is rotatably connected to the support wheel 11 at the bottom of the lifting cam 14. The outer wall of the support wheel 11 is in contact with the outer wall of the lifting cam 14. An angle sensor 151 is fixedly arranged on the outer wall of the output end of the dual-axis motor 15. The dual-axis motor 15 is a motor with two output ends in the prior art. The angle sensor 151 is used to obtain the angle of the output end of the dual-axis motor 15, or whether the lifting frame 5 is in a lifted and suspended state, so as to control the servo motor 7 to drive the common plate 2 to transfer multiple different diapers to the printing station at the bottom of the horizontal frame 4.

[0042] The shell of the angle sensor 151 is fixedly arranged on the outer wall of the shell of the dual-axis motor 15 , and a driving rod 13 is fixedly arranged on the side of the lifting cam 14 . The end of the driving rod 13 is rotatably connected to a pulling rod 17 , and the other end of the pulling rod 17 is rotatably connected to the side of the vertical rod 18 .

[0043] The horizontal frame 4 is vertically fixed with a fixing rod 27 on both sides of the screen printing component. A composite flattening component for first fixing and then flattening the diaper is arranged on the top of the fixing rod 27. The composite flattening component includes a flattening roller 30, a horizontal U rod 29, a driven rod 32, a step rod 36, and a flattening cam 16. The horizontal U rod 29 is rotatably connected to the side of the flattening roller 30. The flattening roller 30 is made of rubber. The length of the flattening roller 30 is not less than the longitudinal length of the diaper. A driven rod 32 is fixedly arranged at the side edge of the horizontal U rod 29. A path planning component for planning the displacement path of the flattening roller 30 is arranged below the fixing rod 27.

[0044] A flattening cam 16 is fixedly provided at the output end of the dual-axis motor 15. The outer walls of the flattening cam 16 and the lifting cam 14 are sequentially provided with a transition straight line segment 161, a small arc segment 162, and a large arc segment 163. The transition straight line segment 161, the small arc segment 162, and the large arc segment 163 are sequentially fixedly connected end to end. The curvature radius of the small arc segment 162 is smaller than the curvature radius of the large arc segment 163. When the small arc segment 162 of the lifting cam 14 contacts the supporting wheel 11, the lifting frame 5 remains in contact with the horizontal frame 4. At this time, the screen printing component on the lifting frame 5 is waiting to print the diaper.

[0045] The path planning component includes a vertical plate 28, a transverse guide rod 25, a guide frame 34, and a vertical column 35. The vertical plate 28 is vertically fixed at one end of the top of the fixed rod 27 away from the horizontal frame 4. The side of the vertical plate 28 is provided with a sliding inclined surface 281, a vertical surface 282, and a flattening inclined surface 283 in sequence along the vertical direction.

[0046] A transverse guide rod 25 is fixedly arranged on the top of the vertical plate 28, a horizontal hole 26 is opened on the side of the transverse guide rod 25, a guide column 31 is movably inserted into the side of the horizontal hole 26, the outer wall of the guide column 31 is fixedly connected to one end of the connecting spring 33, a transverse groove 24 is opened on the top of the transverse guide rod 25, the other end of the connecting spring 33 is fixedly connected to the side of the transverse groove 24, the other end of the guide column 31 is fixedly connected to the side of the guide frame 34, a vertical groove 39 is opened on the side of the guide frame 34, the bottom of the vertical groove 39 is fixedly connected to one end of the vertical spring 38, and the top of the vertical spring 38 is connected to the bottom of the extension block 37.

[0047] The other end of the extension block 37 is fixedly connected to the side of the vertical column 35, and the connecting spring 33 and the vertical spring 38 make one end of the driven rod 32 always fit to the side of the pushing slope 281, the vertical surface 282, and the flattening slope 283, and this end of the driven rod 32 is an arc end. It should be supplemented that the top projection length of the flattening slope 283 needs to be set appropriately. The top projection length of the flattening slope 283 is the actual stretching and flattening distance length of the flattening roller 30 on the diaper.

[0048] A vertical column 35 is movably inserted into the guide frame 34 along the vertical direction. The bottom of the vertical column 35 is fixedly connected to the top of the driven rod 32. A step rod 36 is fixedly provided on the side of the driven rod 32. The step rod 36 extends under the flattening cam 16.

[0049] It should be added that the relative positions of the flattening cam 16 and the lifting cam 14 need to be installed appropriately. When one end of the large arc segment 163 of the lifting cam 14 begins to contact the support wheel 11, the top of the step rod 36 changes from contacting the small arc segment 162 of the flattening cam 16 to contacting the large arc segment 163 of the flattening cam 16. At this time, the entire flattening roller 30 is controlled by the path planning component to move downward along the specified path.

[0050] The specific implementation steps and principles of the present invention are as follows:

[0051] After the entire screen printing assembly is used to print a diaper, the angle sensor 151 obtains the rotation angle of the dual-axis motor 15, and the servo motor 7 controls the loading platform 3 on the top of the common plate 2 to rotate to just below the horizontal frame 4. The diaper on the top of the loading platform 3 is waiting for printing, and the support wheel 11 sequentially changes to a state of fitting with the small arc segment 162 of the lifting cam 14 and then contacting with the transition straight line segment 161. Finally, one end of the large arc segment 163 of the lifting cam 14 begins to contact the support wheel 11. At this time, the lifting frame 5 is supported on the top of the horizontal frame 4 and maintains an inclined state. During this process, the vertical rod 18 and the transverse rod 19 are pushed to the top edge of the screen plate 9, that is, the initial printing position, by the driving rod 13 and the pulling rod 17. During this process, the side of the head of the vertical rod 18 abuts against the abutting bolt 23 at the bottom of the side of the vertical frame 21, and the vertical rod 18 tilts and does not remain perpendicular to the top surface of the screen plate 9. The ink scraper rod 20 detaches from the top of the screen plate 9 and stops printing.

[0052] When one end of the large arc segment 163 of the lifting cam 14 begins to contact the support wheel 11, and the lifting frame 5 is supported on the top of the horizontal frame 4 and maintains an inclined state, the top of the step rod 36 changes from contacting the small arc segment 162 of the flattening cam 16 to contacting the transition straight segment 161 and the large arc segment 163 of the flattening cam 16, and the flattening roller 30 on the horizontal U rod 29 is pushed downward by the step rod 36. In this process, the driven rod 32 moves along the pushing inclined surface 281, the vertical surface 282, and the flattening inclined surface 283, and the connecting spring 33 and the vertical spring 38 are both compressed. The flattening roller 30 will first move to the top of the diaper and press to the two ends of the top of the diaper. Finally, the two flattening rollers 30 move away from each other to stretch and flatten the diaper.

[0053] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fully biodegradable diaper printing machine, comprising a support base (1), a common plate (2), and a loading platform (3). It is characterized in that A horizontal frame (4) is fixedly arranged at the top edge of the support seat (1); a support platform (6) is vertically fixedly arranged on a side of the support seat (1) away from the horizontal frame (4); a servo motor (7) is fixedly arranged at the bottom of the support platform (6); a common disk (2) is fixedly arranged at the output end of the servo motor (7); a loading platform (3) is arranged in a circular array on the top of the common disk (2); a lifting frame (5) is rotatably connected to one end of the horizontal frame (4) away from the common disk (2); a screen plate (9) is fixedly arranged on the side of the bottom of the lifting frame (5) away from the horizontal frame (4); a screen printing component for scraping ink from the screen plate (9) is arranged on the top of the lifting frame (5); the screen printing component comprises a transverse movement rod (19) and a driving rod (13). , an ink scraping rod (20), a horizontal column (22), the two ends of the transverse rod (19) are cylindrical, the two ends of the transverse rod (19) are movably inserted into the guide light column (10), the two ends of the guide light column (10) are vertically fixed with support rods (8), the bottom of the support rod (8) is vertically fixed on the top of the lifting frame (5), and a vertical frame (21) is vertically fixed in the middle position of the transverse rod (19), and the side of the vertical frame (21) is equidistantly threaded with abutting bolts (23) along the vertical direction. The length of the abutting bolts (23) at the top of the side of the vertical frame (21) screwed into the inner cavity of the vertical frame (21) is greater than the length of the abutting bolts (23) at the bottom of the side of the vertical frame (21) screwed into the inner cavity of the vertical frame (21). A horizontal column (22) is fixedly arranged on the side of the vertical frame (21), and the outer wall of the horizontal column (22) is rotatably connected to a vertical rod (18). There is a gap between the side of the head of the vertical rod (18) and the side of the inner cavity of the vertical frame (21). A lifting drive component is arranged on the top of the lifting frame (5) for automatically lifting the screen printing component after the screen printing component prints a single diaper to facilitate the next diaper to enter the printing station. The lifting drive component includes a support wheel (11), a dual-axis motor (15), and a lifting cam (14). The dual-axis motor (15) is fixedly arranged in the middle position of the side of the inverted U frame (12), and the bottom of the inverted U frame (12) is fixedly arranged on the top of the lifting frame (5). The output end of the dual-axis motor (15) is fixedly provided with a lifting cam. The horizontal frame (4) is rotatably connected to a support wheel (11) at the bottom of the lifting cam (14); the outer wall of the support wheel (11) is in contact with the outer wall of the lifting cam (14); an angle sensor (151) is fixedly arranged on the outer wall of the output end of the dual-axis motor (15); the housing of the angle sensor (151) is fixedly arranged on the outer wall of the housing of the dual-axis motor (15); a flattening cam (16) is fixedly arranged at the end of the output end of the dual-axis motor (15); the outer walls of the flattening cam (16) and the lifting cam (14) are sequentially provided with a transition straight line segment (161), a small arc segment (162), and a large arc segment (163); the transition straight line segment (161), the small arc segment (162), and the large arc segment (163) are sequentially fixedly connected end to end;The curvature radius of the small arc segment (162) is smaller than the curvature radius of the large arc segment (163); the horizontal frame (4) is vertically fixed with fixing rods (27) on both sides of the screen printing component; a composite flattening component for first fixing and then flattening the diaper is arranged on the top of the fixing rod (27); the composite flattening component comprises a flattening roller (30), a horizontal U rod (29), a driven rod (32), a step rod (36), and a flattening cam (16); the side of the horizontal U rod (29) is rotatably connected to the flattening roller (30); the side edge of the horizontal U rod (29) is fixedly provided with a driven rod (32); and the fixing rod (27) is provided with a flattening roller (30) below the flattening roller (30). A path planning component for planning the displacement path of a flattening roller (30), the path planning component comprising a vertical plate (28), a transverse guide rod (25), a guide frame (34), and a vertical column (35); a vertical plate (28) is vertically fixedly arranged at one end of the top of the fixed rod (27) away from the horizontal frame (4); a displacement inclined surface (281), a vertical surface (282), and a flattening inclined surface (283) are sequentially provided on the side of the vertical plate (28) along the vertical direction; a transverse guide rod (25) is fixedly arranged on the top of the vertical plate (28); a horizontal hole (26) is provided on the side of the transverse guide rod (25); and a guide column (31) is movably inserted into the side of the horizontal hole (26).

2. A fully biodegradable diaper printing machine according to claim 1, It is characterized in that A driving rod (13) is fixedly arranged on the side of the lifting cam (14), the end of the driving rod (13) is rotatably connected to a pulling rod (17), and the other end of the pulling rod (17) is rotatably connected to the side of the vertical rod (18).

3. A fully biodegradable diaper printing machine according to claim 2, It is characterized in that The outer wall of the guide column (31) is fixedly connected to one end of a connecting spring (33); a lateral displacement groove (24) is provided on the top of the lateral displacement guide rod (25); the other end of the connecting spring (33) is fixedly connected to a side of the lateral displacement groove (24); and the other end of the guide column (31) is fixedly connected to a side of a guide frame (34).

4. A fully biodegradable diaper printing machine according to claim 3, It is characterized in that A vertical groove (39) is provided on the side of the guide frame (34); the bottom of the vertical groove (39) is fixedly connected to one end of a vertical spring (38); the top of the vertical spring (38) is connected to the bottom of an extension block (37); the other end of the extension block (37) is fixedly connected to the side of the vertical column (35).

5. A fully biodegradable diaper printing machine according to claim 4, It is characterized in that A vertical column (35) is movably inserted into the guide frame (34) along the vertical direction. The bottom of the vertical column (35) is fixedly connected to the top of the driven rod (32). A step rod (36) is fixedly provided on the side of the driven rod (32). The step rod (36) extends below the flattening cam (16).

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