Rotary turning mechanism for paper conveying roller

Abstract

The rotary turning mechanism for the paper conveying roller relates to the technical field of paper conveying and comprises a base, an electric sliding rail is fixedly connected to the upper surface of the base, a tool rest is installed on the electric sliding rail, a fixed frame is fixedly connected to the side of the upper surface of the base, and meanwhile a movable frame is arranged on the other side of the base; the inner side of the fixing frame is fixedly connected with a fixing frame. According to the rotary turning mechanism for the paper conveying roller, a user can make the conveying roller be in butt joint with the outer side of a fixing column and push the conveying roller, so that the conveying roller drives the fixing column to move towards the inner side of a fixing frame, the fixing column extrudes a pressing plate, and an extrusion air bag is pressed through the pressing plate; and air in the extrusion air bag can be conveyed into the expansion air bag through the exhaust channel, so that the expansion air bag is expanded, the expanded expansion air bag can be attached to the interior of the end side of the conveying roller, the stability of butt joint between the conveying roller and the fixing column is further improved, and therefore follow-up turning treatment can be better carried out.

Description

Technical Field

[0001] The invention relates to the technical field of paper conveying, in particular to a rotary turning mechanism for a paper conveying roller. Background Art

[0002] During the paper processing or printing process, the paper needs to be transported from one position to another by rolling, and the friction generated by the rotation of the conveying roller is used to drive the paper, so as to achieve continuous transportation of the paper. Before use, the conveying roller needs to be turned so that it can be better transported.

[0003] Prior art 1 (publication number: CN116689797B, Chinese patent with publication date of 2023-10-13) A turning device for sunken roller processing, the present invention relates to the field of turning equipment technology, the bottom of the turning device is arranged as a driving base, the bottom of the driving base is arranged with a base, support frames are installed on both sides of the top surface of the base, a screw rod is movably installed between the support frames, the outer ring of the screw rod is sleeved with a slider, and a milling cutter assembly is installed at the front end of the slider, the milling cutter assembly comprises a positioning wheel, a protective buckle and a milling cutter, a protective buckle is installed between the positioning wheel and the milling cutter, a pop-up rod is inserted inside the protective buckle, which effectively guides the milling cutter during turning, and a protective buckle is installed behind the positioning wheel. When the protective buckle reaches the edge of the sunken roller, the internal pop-up rod pushes outward, so that the protective buckle and the milling cutter assembly are disconnected, preventing the milling cutter from continuing to idle or colliding with the cutter, thereby protecting the milling cutter at the end of turning the sunken roller, reducing the loss of the turning device.

[0004] There is also prior art 2 (publication number: CN115229240A, Chinese patent published on 2022-10-25) a printing plate roller turning device, which includes a frame; a frame; a three-jaw chuck, which is rotatably connected to one end of the frame, can rotate under the drive of the driving mechanism and can fix one end of the printing plate roller between the three-jaw chuck; a moving mechanism, which is arranged at the end of the frame away from the three-jaw chuck, and the moving mechanism can move on the frame; a drilling device, which includes a drill bit whose axis is in the same straight line as the axis of the printing plate roller, and the drill bit can drill the printing plate roller under the drive of the moving mechanism; a fixing mechanism, which can fix the drill bit when the drill bit is installed. It has the effect of reducing the loosening of the drill bit during the drilling of the printing plate roller.

[0005] Although the existing technologies 1 and 2 can perform turning operations on the conveyor rollers, most of them are unable to perform auxiliary fixing and adjustment on the sides of the roller bodies when fixing the conveyor rollers. The rollers are prone to fall off during turning operations, thereby affecting the subsequent turning effects.

[0006] Therefore, we propose a rotary turning mechanism for a paper conveying roller to solve the above-mentioned problems. Summary of the invention

[0007] The object of the present invention is to provide a rotary turning mechanism for a paper conveying roller, so as to solve the problem raised in the above-mentioned background technology that when fixing the conveying roller in the current market, most of them cannot perform auxiliary fixing and adjustment on the side of the roller body, and the roller is prone to fall off during the turning operation, thereby affecting the subsequent turning effect.

[0008] To achieve the above object, the present invention provides the following technical solution: a rotary turning mechanism for a paper conveying roller, comprising a base, an upper surface of the base is fixedly connected to an electric slide rail, a tool holder is installed on the electric slide rail, and a fixed frame is fixedly connected to a side of the upper surface of the base, and a movable frame is arranged on the other side of the base; The inner side of the fixing frame is fixedly connected to a fixing frame, and the inner side of the fixing frame is fixedly connected to an extrusion airbag, and the end side of the fixing frame is nested with a fixing column, and an expansion mechanism that can assist in fixing the conveying roller is arranged between the end side of the fixing column and the extrusion airbag; An auxiliary disk is fixedly connected to the inner side of the movable frame, and a limiting groove is provided on the auxiliary disk, and a movable rod is nested and connected inside the limiting groove, and a limiting plate is fixedly connected to the outer side of the movable rod, and an adjustment mechanism for adjusting the position of the limiting plate is provided between the inner side of the movable rod and the inside of the auxiliary disk.

[0009] Preferably, the expansion mechanism includes a pressing plate, which is fixedly connected to the outside of the extrusion airbag, and a sliding groove is opened at the center of the pressing plate, and a sliding block is nested and connected inside the sliding groove, an auxiliary rod is fixedly connected to the end side of the sliding block, and one end of the auxiliary rod extends to the inside of the extrusion airbag, and a blocking plate is fixedly connected to the outside of the auxiliary rod, a moving plate is fixedly connected to the end of the auxiliary rod, and a first spring is fixedly connected between the inner side of the moving plate and the extrusion airbag, a docking rod is nested and connected at the center of the pressing plate, and the docking rod is fixedly connected to the end side of the fixed column, and the expansion airbag is fixedly connected to the outside of the fixed column.

[0010] Preferably, the expansion airbag and the extrusion airbag are interconnected, and the pressing plate forms a sliding structure through a fixing column and a fixing frame.

[0011] Preferably, the sliding block forms a sliding structure through the docking rod and the sliding groove, the diameter of the moving piece is larger than the diameter of the blocking piece, and the moving piece forms an elastic mechanism through the first spring and the extrusion airbag.

[0012] Preferably, the adjustment mechanism includes a first threaded rod, which is nested at the center of the auxiliary disk, and the outer side of the first threaded rod is threadedly connected to a turntable, and the turntable is arranged inside the auxiliary disk, the outer end of the first threaded rod is fixedly connected to a pressing disk, and a second spring is fixedly connected between the inner side of the pressing disk and the outer surface of the auxiliary disk, an adjustment groove is opened on the turntable, and the inner end of the movable rod is nested and connected inside the adjustment groove.

[0013] Preferably, the pressing plate forms an elastic structure with the auxiliary plate through the second spring, the first threaded rod forms a sliding structure with the pressing plate and the auxiliary plate, and the rotating plate forms a rotating structure with the first threaded rod.

[0014] Preferably, the adjusting grooves are opened in an arc-shaped ring array, and the moving rods form a sliding structure through the adjusting grooves and the limiting grooves.

[0015] Preferably, the outer end of the limiting plate is fixedly connected to a linkage rod, and the end side of the linkage rod is fixedly connected to a connecting plate, and one end of the connecting plate is nested and connected to the inner upper surface of the movable frame, and the other side of the connecting plate is nested and connected to a retraction plate, and the outer end of the retraction plate is nested and connected to the inner side of the fixed frame, the lower surfaces of the connecting plate and the retraction plate are fixedly connected to the retraction rod, and the lower end of the retraction rod is fixedly connected to a pull-out cleaning plate.

[0016] Preferably, a placement plate is fixedly connected to the inner side of the fixing frame, and a knocking rod is nested and connected inside the placement plate, and a third spring is fixedly connected between the lower end of the knocking rod and the lower surface of the placement plate, and a magnetic block is fixedly connected between the lower end of the knocking rod and the lower surface of the placement plate.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The user can dock the conveying roller to the outside of the fixed column, and then manually push the conveying roller, so that the conveying roller drives the fixed column to move to the inside of the fixed frame, so that the fixed column squeezes the pressing plate, and the pressing plate presses the extrusion airbag. At this time, the gas inside the extrusion airbag can be transported to the inside of the expansion airbag through the exhaust channel, so that the expansion airbag expands. The expanded expansion airbag can fit with the inside of the end side of the conveying roller, thereby further improving the stability of the docking between the conveying roller and the fixed column, so as to better perform the subsequent turning process; When the fixed column is moving, the docking rod fixedly arranged at the end side of the fixed column will dock with the inside of the pressing plate. At this time, the docking rod will resist and push the slider, so that the slider moves along the inside of the slide groove. When the slider moves, it will synchronously drive the blocking piece to move backward through the auxiliary rod. At this time, the blocking piece does not block the exhaust port of the extrusion airbag. When the outer side of the fixed column is not docked, the moving piece drives the blocking piece to reset under the driving force of the elastic force of the first spring, thereby blocking the exhaust port of the extrusion airbag. At the same time, the docking rod is synchronously pushed outward, further resetting the fixed column, which is convenient for subsequent docking operations. After the initial docking of the conveying rollers is completed, the user can adjust the moving frame to move. At this time, the pressing plate contacts the other side of the conveying roller. At the same time, the pressing plate is subjected to pressure, which drives the first threaded rod to move along the outer side of the auxiliary plate, and under the action of the threaded connection, the turntable rotates. When the turntable rotates, the adjustment groove arranged inside it will conflict with the moving rod, and the moving rod will move. At this time, the moving rod can move stably under the limiting action of the limiting groove, and assist in limiting the other end of the conveying roller, thereby improving the stability of subsequent turning; When the limit plate is moving, it will synchronously drive the connecting plate to move downward. At this time, the connecting plate can synchronously drive the pull-out cleaning plate to move downward through the retracting rod until the pull-out cleaning plate moves downward and fits the surface of the conveying roller. The pull-out cleaning plate can clean the impurities generated by turning on the conveying roller surface, thereby reducing the impact of impurities on subsequent turning. The retraction plate will move synchronously driven by the limit plate. When the retraction plate is reset, the lower end of the retraction plate will not conflict with the knocking rod. The knocking rod will move up and reset under the driving force of the magnetic force of the two sets of magnetic blocks, thereby knocking the retraction plate, causing the retraction plate to vibrate. At this time, the vibration force of the retraction plate will be transmitted to the pull-out cleaning plate, thereby shaking off the impurities accumulated on the pull-out cleaning plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of a three-dimensional cross-sectional structure of the present invention; Figure 3 It is a schematic diagram of a three-dimensional cross-sectional structure of a fixing column of the present invention; Figure 4 It is a schematic diagram of a three-dimensional cross-sectional structure of a fixing frame of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the docking rod of the present invention; Figure 6 This is a schematic diagram of the three-dimensional structure of the auxiliary disk of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the limiting plate of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the turntable of the present invention; Fig. 9 It is a schematic diagram of the three-dimensional structure of the connecting plate of the present invention; Fig.10 This is a schematic diagram of the three-dimensional structure of the placement plate of the present invention;.

[0019] In the figure: 1. base; 2. fixed frame; 3. movable frame; 4. auxiliary plate; 5. fixed frame; 6. electric slide rail; 7. knife holder; 8. connecting plate; 9. retracting plate; 10. pull-out cleaning plate; 11. magnetic block; 12. first threaded rod; 13. third spring; 14. pressing plate; 15. turntable; 16. fixed column; 17. expansion airbag; 18. extrusion airbag; 19. pressing plate; 20. docking rod; 21. baffle; 22. movable plate; 23. first spring; 24. slide groove; 25. slider; 26. auxiliary rod; 27. limit plate; 28. movable rod; 29. ​​limit groove; 30. second spring; 31. adjustment groove; 32. linkage rod; 33. retracting rod; 34. knocking rod; 35. placement plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Embodiment 1: Figure 1 , Figure 3-Figure 6 The technical solution shown in the figure, the present invention provides the following technical solution: a rotary turning mechanism for a paper conveying roller, an expansion mechanism is disclosed, and the stability of the conveying roller fixation can be improved by the expansion mechanism: A base 1, an electric slide rail 6 is fixedly connected to the upper surface of the base 1, and a tool holder 7 is installed on the electric slide rail 6, and a fixed frame 2 is fixedly connected to the side of the upper surface of the base 1, and a movable frame 3 is arranged on the other side of the base 1, a fixed frame 5 is fixedly connected to the inner side of the fixed frame 2, and an extrusion airbag 18 is fixedly connected to the inner side of the fixed frame 5, and a fixed column 16 is nested on the end side of the fixed frame 5, and an expansion mechanism that can assist in fixing the conveying roller is arranged between the end side of the fixed column 16 and the extrusion airbag 18; The expansion mechanism includes a pressing plate 19, which is fixedly connected to the outside of the squeezing airbag 18, and a slide groove 24 is opened at the center of the pressing plate 19, and a slider 25 is nested inside the slide groove 24, and an auxiliary rod 26 is fixedly connected to the end side of the slider 25, and one end of the auxiliary rod 26 extends to the inside of the squeezing airbag 18, and a baffle 21 is fixedly connected to the outside of the auxiliary rod 26, and a moving piece 22 is fixedly connected to the end of the auxiliary rod 26, and a first spring 2 is fixedly connected between the inner side of the moving piece 22 and the squeezing airbag 18. 3. A docking rod 20 is nested and connected at the center of the pressing plate 19, and the docking rod 20 is fixedly connected to the end side of the fixed column 16, and the outer side of the fixed column 16 is fixedly connected to the expansion airbag 17, and the expansion airbag 17 and the extrusion airbag 18 are mutually connected. The pressing plate 19 forms a sliding structure with the fixed frame 5 through the fixed column 16, and the slider 25 forms a sliding structure with the slide groove 24 through the docking rod 20. The diameter of the moving sheet 22 is greater than the diameter of the blocking sheet 21, and the moving sheet 22 forms an elastic mechanism with the extrusion airbag 18 through the first spring 23.

[0022] The user can dock the conveying roller to the outside of the fixed column 16, and then manually push the conveying roller, so that the conveying roller drives the fixed column 16 to move toward the inside of the fixed frame 5, so that the fixed column 16 squeezes the pressing plate 19, and the pressing plate 19 presses the squeezing airbag 18. At this time, the gas inside the squeezing airbag 18 can be transported to the inside of the expansion airbag 17 through the exhaust channel, so that the expansion airbag 17 expands. The expanded expansion airbag 17 can fit with the inside of the end side of the conveying roller, thereby further improving the stability of the docking between the conveying roller and the fixed column 16, so as to better perform the subsequent turning process; When the fixed column 16 is moving, the docking rod 20 fixedly arranged on the end side of the fixed column 16 will dock with the inside of the pressing plate 19. At this time, the docking rod 20 will resist and push the slider 25, so that the slider 25 moves along the inside of the slide groove 24. When the slider 25 is moving, it will synchronously drive the baffle 21 to move backward through the auxiliary rod 26. At this time, the baffle 21 does not block the exhaust port of the extrusion airbag 18. When the outer side of the fixed column 16 is not docking, the moving sheet 22 drives the baffle 21 to reset under the driving force of the elastic force of the first spring 23, thereby blocking the exhaust port of the extrusion airbag 18. At the same time, the docking rod 20 is synchronously pushed outward, further resetting the fixed column 16 to facilitate subsequent docking operations.

[0023] Embodiment 2: Figure 2 , Figure 6 , Figure 7 and Figure 8 The technical solution shown in the figure, the present invention provides the following technical solution: a rotary turning mechanism for a paper conveying roller, an adjustment mechanism is disclosed, and the conveying roller can be auxiliary limited by the adjustment mechanism: The inner side of the moving frame 3 is fixedly connected with the auxiliary plate 4, and the auxiliary plate 4 is provided with a limiting groove 29, and the inner side of the limiting groove 29 is nested with a moving rod 28, and the outer side of the moving rod 28 is fixedly connected with a limiting plate 27, and an adjustment mechanism for adjusting the position of the limiting plate 27 is provided between the inner side of the moving rod 28 and the inner side of the auxiliary plate 4; The adjusting mechanism includes a first threaded rod 12, which is nested at the center of the auxiliary disk 4, and the outer side of the first threaded rod 12 is threadedly connected to a turntable 15, and the turntable 15 is arranged inside the auxiliary disk 4, the outer end of the first threaded rod 12 is fixedly connected to a pressing disk 14, and a second spring 30 is fixedly connected between the inner side of the pressing disk 14 and the outer surface of the auxiliary disk 4, an adjusting groove 31 is provided on the turntable 15, the inner end of the moving rod 28 is nested and connected inside the adjusting groove 31, the pressing disk 14 and the auxiliary disk 4 form an elastic structure through the second spring 30, the first threaded rod 12 and the auxiliary disk 4 form a sliding structure through the pressing disk 14, the turntable 15 forms a rotating structure through the first threaded rod 12, the adjusting groove 31 is opened in an arc-shaped ring array, and the moving rod 28 forms a sliding structure with the limiting groove 29 through the adjusting groove 31.

[0024] After the user has completed the initial docking of the conveying rollers, the user can adjust the movable frame 3 to move. At this time, the pressing plate 14 is in contact with the other side of the conveying roller. At the same time, the pressing plate 14 is subjected to pressure, which will drive the first threaded rod 12 to move along the outside of the auxiliary plate 4, and under the action of the threaded connection, the turntable 15 is rotated. When the turntable 15 is rotating, the adjustment groove 31 provided therein will conflict with the moving rod 28, and the moving rod 28 will move. At this time, the moving rod 28 can move stably under the limiting action of the limiting groove 29, and assist in limiting the other end of the conveying roller, thereby improving the stability of subsequent turning.

[0025] Embodiment 3: Figure 1 , Figure 2 , Fig. 9 and Fig.10 The technical solution shown in the figure, the present invention provides the following technical solution: a rotary turning mechanism for a paper conveying roller, disclosing a pull-out dust cleaning plate 10, by which dust can be cleaned: The outer end of the limiting plate 27 is fixedly connected to a linkage rod 32, and the end side of the linkage rod 32 is fixedly connected to a connecting plate 8, and one end of the connecting plate 8 is nested and connected to the inner upper surface of the movable frame 3, and the other side of the connecting plate 8 is nested and connected to a retraction plate 9, and at the same time, the outer end of the retraction plate 9 is nested and connected to the inner side of the fixed frame 2, and the lower surfaces of the connecting plate 8 and the retraction plate 9 are fixedly connected to a retraction rod 33, and the lower end of the retraction rod 33 is fixedly connected to a pull-out cleaning plate 10, and a placement plate 35 is fixedly connected to the inner side of the fixed frame 2, and a knocking rod 34 is nested and connected inside the placement plate 35, and a third spring 13 is fixedly connected between the lower end of the knocking rod 34 and the lower surface of the placement plate 35, and a magnetic block 11 is fixedly connected between the lower end of the knocking rod 34 and the lower surface of the placement plate 35.

[0026] During the movement of the limit plate 27, the connecting plate 8 will be synchronously driven to move downward. At this time, the connecting plate 8 can synchronously drive the pull-out cleaning plate 10 to move downward through the retraction rod 33 until the pull-out cleaning plate 10 moves downward and fits with the surface of the conveying roller. The impurities generated by turning on the surface of the conveying roller can be cleaned by pulling the cleaning plate 10, thereby reducing the influence of impurities on subsequent turning. The retraction plate 9 will move synchronously under the drive of the limit plate 27. When the retraction plate 9 is reset, the lower end of the retraction plate 9 does not conflict with the knocking rod 34. The knocking rod 34 is driven by the magnetic force of the two groups of magnetic blocks 11 to move up and reset, thereby knocking the retraction plate 9, causing the retraction plate 9 to vibrate. At this time, the vibration force of the retraction plate 9 will be transmitted to the pull-out cleaning plate 10, thereby shaking off the impurities accumulated on the pull-out cleaning plate 10.

[0027] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rotary turning mechanism for a paper conveying roller, comprising a base (1), an upper surface of the base (1) being fixedly connected to an electric slide rail (6), a tool holder (7) being mounted on the electric slide rail (6), and a fixed frame (2) being fixedly connected to a side of the upper surface of the base (1), and a movable frame (3) being arranged on the other side of the base (1); It is characterized in that The inner side of the fixing frame (2) is fixedly connected to a fixing frame (5), and the inner side of the fixing frame (5) is fixedly connected to an extrusion airbag (18), and a fixing column (16) is nested at the end side of the fixing frame (5), and an expansion mechanism that can assist in fixing the conveying roller is provided between the end side of the fixing column (16) and the extrusion airbag (18); The inner side of the movable frame (3) is fixedly connected to an auxiliary disk (4), and a limiting groove (29) is provided on the auxiliary disk (4), and a movable rod (28) is nested and connected inside the limiting groove (29), and the outer side of the movable rod (28) is fixedly connected to a limiting plate (27), and an adjustment mechanism for adjusting the position of the limiting plate (27) is provided between the inner side of the movable rod (28) and the inner side of the auxiliary disk (4).

2. A rotary turning mechanism for a paper conveying roller according to claim 1, characterized in that: The expansion mechanism comprises a pressing plate (19), the pressing plate (19) being fixedly connected to the outside of the squeezing airbag (18), a sliding groove (24) being provided at the center of the pressing plate (19), and a sliding block (25) being nested and connected inside the sliding groove (24), an auxiliary rod (26) being fixedly connected to the end side of the sliding block (25), one end of the auxiliary rod (26) extending into the inside of the squeezing airbag (18), and a blocking plate (21) being fixedly connected to the outside of the auxiliary rod (26), a moving plate (22) being fixedly connected to the end of the auxiliary rod (26), and a first spring (23) being fixedly connected between the inner side of the moving plate (22) and the squeezing airbag (18), a docking rod (20) being nested and connected at the center of the pressing plate (19), and the docking rod (20) being fixedly connected to the end side of the fixing column (16), and an expansion airbag (17) being fixedly connected to the outside of the fixing column (16).

3. A rotary turning mechanism for a paper conveying roller according to claim 2, characterized in that: The expansion airbag (17) and the extrusion airbag (18) are interconnected, and the pressing plate (19) forms a sliding structure with the fixing column (16) and the fixing frame (5).

4. A rotary turning mechanism for a paper conveying roller according to claim 3, characterized in that: The sliding block (25) forms a sliding structure through the docking rod (20) and the sliding groove (24); the diameter of the moving piece (22) is greater than the diameter of the blocking piece (21); and the moving piece (22) forms an elastic mechanism through the first spring (23) and the extrusion airbag (18).

5. The rotary turning mechanism for a paper conveying roller according to claim 1, characterized in that: The adjustment mechanism comprises a first threaded rod (12), the first threaded rod (12) being nested and arranged at the center of the auxiliary disk (4), and the outer side of the first threaded rod (12) being threadedly connected to a rotating disk (15), and the rotating disk (15) being arranged inside the auxiliary disk (4), the outer end of the first threaded rod (12) being fixedly connected to a pressing disk (14), and a second spring (30) being fixedly connected between the inner side of the pressing disk (14) and the outer surface of the auxiliary disk (4), the rotating disk (15) being provided with an adjustment slot (31), and the inner end of the moving rod (28) being nested and connected inside the adjustment slot (31).

6. A rotary turning mechanism for a paper conveying roller according to claim 5, characterized in that: The pressing plate (14) forms an elastic structure with the auxiliary plate (4) through the second spring (30), the first threaded rod (12) forms a sliding structure with the auxiliary plate (4) through the pressing plate (14), and the rotating plate (15) forms a rotating structure through the first threaded rod (12).

7. The rotary turning mechanism for a paper conveying roller according to claim 5, characterized in that: The adjusting grooves (31) are provided in an arc-shaped annular array, and the moving rod (28) forms a sliding structure through the adjusting grooves (31) and the limiting grooves (29).

8. The rotary turning mechanism for a paper conveying roller according to claim 5, characterized in that: The outer end of the limit plate (27) is fixedly connected to a linkage rod (32), and the end side of the linkage rod (32) is fixedly connected to a connecting plate (8), and one end of the connecting plate (8) is nested and connected to the inner upper surface of the movable frame (3), and the other side of the connecting plate (8) is nested and connected to a retractable plate (9), and the outer end of the retractable plate (9) is nested and connected to the inner side of the fixed frame (2), and the lower surfaces of the connecting plate (8) and the retractable plate (9) are both fixedly connected to a retractable rod (33), and the lower end of the retractable rod (33) is fixedly connected to a pull-out cleaning plate (10).

9. The rotary turning mechanism for a paper conveying roller according to claim 1, characterized in that: A placement plate (35) is fixedly connected to the inner side of the fixing frame (2), a knocking rod (34) is nested and connected inside the placement plate (35), a third spring (13) is fixedly connected between the lower end of the knocking rod (34) and the lower surface of the placement plate (35), and a magnetic block (11) is fixedly connected between the lower end of the knocking rod (34) and the lower surface of the placement plate (35).

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