A buffer tray for a web-fed inkjet printer
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING MINGDA XIANGRUI CULTURE MEDIA CO LTD
- Filing Date
- 2025-10-09
- Publication Date
- 2026-08-07
AI Technical Summary
[0003]传统的印刷机由于不同规格的印刷任务需匹配不同宽度的纸卷，传统存纸架的固定结构难以灵活调节，适配性较差，降低了存纸架的通用性，此外，传统存纸架的高度通常固定，装卸纸卷时需要人工对纸卷进行抬升，耗时耗力，降低了工作效率
[0013]1、通过设置有固定结构，转动转轮使正反牙丝杆旋转，利用正反牙丝杆两端的正反向螺纹与两块滑动板的螺纹孔配合，驱动滑动板在转动杆滑槽内相向或反向移动，从而带动固定环调节间距，固定环沿着转动杆外表面滑动时可以带动连接杆移动，通过连接杆的移动带动固定盘移动，使得固定盘可以脱离或者贴合存纸滚筒两端，固定盘脱离存纸滚筒后便可以将存纸滚筒取下，将新的存纸滚筒放置在两块固定盘之间，反转正反牙丝杆使得固定盘贴合存纸滚筒两端，使得存纸滚筒两端进入固定盘侧表面转动孔内部，可灵活调节存纸滚筒两端固定盘的间距，满足不同宽度纸卷的安装需求，无需更换存纸架主体结构，降低了设备适配成本，提高了存纸架的通用性。
Smart Images
Figure CN224604243U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of printing auxiliary equipment technology, and in particular to a buffer paper holder for a rotary inkjet printer. Background Technology
[0002] In the production and operation of a rotary inkjet printer, a continuous and stable supply of paper is a key factor in ensuring printing efficiency and quality.
[0003] Traditional printing presses require paper rolls of different widths to match different printing tasks. The fixed structure of traditional paper racks is difficult to adjust flexibly, resulting in poor adaptability and reduced versatility. In addition, the height of traditional paper racks is usually fixed, requiring manual lifting of paper rolls during loading and unloading, which is time-consuming, labor-intensive, and reduces work efficiency. Utility Model Content
[0004] To solve the above-mentioned technical problems, this utility model provides a buffer paper holder for a rotary inkjet printer.
[0005] The paper buffer rack for a rotary inkjet printer provided by this utility model includes: a storage rack, a support plate, an adjustment structure, a rotating rod, and a fixing structure. Support plates are respectively provided on both sides of the storage rack. An installation groove is provided on the side of the support plate closest to the storage rack. An adjustment structure is provided inside the installation groove on one side of the support plate. The adjustment structure includes a lifting plate and a threaded rod. The lifting plate is slidably connected to the installation groove on one side of the support plate. A threaded hole is provided on the upper surface of the lifting plate, and a threaded rod is threadedly connected inside the threaded hole on the upper surface of the lifting plate. A rotating rod is provided inside the storage rack. A sliding groove is provided on the outer surface of the rotating rod. A fixing structure is provided inside the sliding groove on the outer surface of the rotating rod. The fixing structure includes a sliding plate and positive and negative threaded rods. Two sliding plates are provided, both slidably connected to the sliding groove on the outer surface of the rotating rod. Threaded holes are provided on the side surfaces of both sliding plates, and positive and negative threaded rods are threaded inside the threaded holes on the side surfaces of both sliding plates. Fixing rings are respectively fitted on the outer surfaces of both ends of the rotating rod, and the fixing rings are slidably connected to the outer surface of the rotating rod. A paper storage roller is provided on the outer side of the rotating rod.
[0006] Preferably, the inner walls on both sides of the storage rack are provided with through holes, and the outer surface of one end of the storage rack is provided with a mounting groove. Two ear plates are fixedly connected to the bottom of the mounting groove. The side surfaces of the two ear plates are provided with through holes. The mounting groove on the outer surface of the storage rack is connected to the through hole on one side of the inner wall of the storage rack.
[0007] Preferably, a fixing groove is provided on the upper end of the support plate near the storage rack. A first servo motor is installed inside the fixing groove on one side of the support plate. The first servo motor is fixedly connected to the inner wall of the fixing groove on one side of the support plate. A through hole is provided at the bottom of the fixing groove on one side of the support plate. A threaded rod is rotatably connected to the inside of the through hole at the bottom of the fixing groove on one side of the support plate. The upper end of the threaded rod is fixedly connected to the power output end of the first servo motor, and the lower end of the threaded rod is rotatably connected to the bottom of the mounting groove on one side of the support plate.
[0008] Preferably, the upper surfaces of both ends of the lifting plate are provided with through holes, and sliding rods are slidably connected inside the through holes on both ends of the lifting plate. The upper and lower ends of the sliding rods are respectively fixedly connected to the top and bottom of the mounting groove on one side of the support plate, and one side of the lifting plate passes through the mounting groove on one side of the support plate and is fixedly connected to the outer surface of the storage rack.
[0009] Preferably, the two ends of the rotating rod are rotatably connected to the through holes on the inner walls of both sides of the storage rack. One end of the rotating rod extends into the mounting groove on the outer surface of the storage rack, and the other end of the rotating rod has a through hole that communicates with the sliding groove on the outer surface of the rotating rod. The end of the rotating rod with the through hole extends into the outer surface of the storage rack. A worm gear is fixedly connected to the end of the rotating rod located inside the mounting groove on the outer surface of the storage rack. A worm is engaged below the worm gear. The two ends of the worm are rotatably connected to the through holes on the side surfaces of the two ear plates. A second servo motor is provided at one end of the worm. The bottom of the second servo motor is fixedly connected to the bottom of the mounting groove on the outer surface of the storage rack, and the power output end of the second servo motor is fixedly connected to one end of the worm.
[0010] Preferably, the two sliding plates extend through the grooves on the outer surface of the rotating rod to the outer surface of the rotating rod at both ends. The two sliding plates are fixedly connected to the inner walls of the fixing rings on the outer surfaces of the two ends of the rotating rod. The threaded holes on the side surfaces of the two sliding plates are located at the positive and negative threads on the outer surface of the positive and negative threaded rod, respectively. One end of the positive and negative threaded rod is rotatably connected to the inner wall of the groove on the outer surface of the rotating rod, and the other end of the positive and negative threaded rod extends through the through hole at one end of the rotating rod to the outer surface of the rotating rod. A rotating wheel is fixedly connected to the end of the positive and negative threaded rod extending to the outer surface of the rotating rod.
[0011] Preferably, a fixed plate is provided at both ends of the paper storage roller, and a rotating hole is provided on the side surface of each fixed plate. The two ends of the paper storage roller are rotatably connected to the rotating holes on the side surface of the fixed plate at both ends of the paper storage roller. A connecting rod is fixedly connected to the outer surface of the fixed plate at both ends of the paper storage roller. The connecting rods on the outer surface of the fixed plate at both ends of the paper storage roller are fixedly connected to the outer surface of the fixing ring at both ends of the rotating rod.
[0012] Compared with related technologies, the buffer paper holder for the rotary inkjet printer provided by this utility model has the following beneficial effects:
[0013] 1. With a fixed structure, rotating the wheel causes the positive and negative threaded rods to rotate. The positive and negative threads at both ends of the threaded rods engage with the threaded holes of the two sliding plates, driving the sliding plates to move in opposite directions within the groove of the rotating rod. This, in turn, drives the fixed rings to adjust the spacing. When the fixed rings slide along the outer surface of the rotating rod, they can drive the connecting rod to move. The movement of the connecting rod drives the fixed plate to move, allowing the fixed plate to detach from or fit against both ends of the paper storage roller. After the fixed plate detaches from the paper storage roller, the paper storage roller can be removed. A new paper storage roller is placed between the two fixed plates, and the positive and negative threaded rods are reversed to make the fixed plate fit against both ends of the paper storage roller. This allows the two ends of the paper storage roller to enter the rotating holes on the side surface of the fixed plate. The spacing between the fixed plates at both ends of the paper storage roller can be flexibly adjusted to meet the installation requirements of paper rolls of different widths. There is no need to replace the main structure of the paper storage rack, reducing equipment adaptation costs and improving the versatility of the paper storage rack.
[0014] 2. With the support plate and adjustment structure, the first servo motor is started to drive the threaded rod to rotate. Since the threaded rod is engaged with the threaded hole of the lifting plate, and the lifting plate can only slide vertically due to the restriction of the sliding rod, the rotation of the threaded rod is converted into the linear motion of the lifting plate, which drives the storage rack to descend as a whole, so that the paper roll to be replaced contacts the ground. This makes it easy for the operator to remove the empty paper roll and install the new paper roll, avoiding the need for manual lifting of the paper roll and improving work efficiency. Attached Figure Description
[0015] Figure 1 A schematic diagram of a preferred embodiment of the buffer paper holder of the rotary inkjet printer provided by this utility model;
[0016] Figure 2 This is a structural schematic diagram from another perspective of the present invention;
[0017] Figure 3 This is an exploded structural diagram of the present invention;
[0018] Figure 4 This is an exploded structural diagram of the rotating rod, fixing structure, fixing ring, fixing disc, and connecting rod of this utility model;
[0019] Figure 5 For the present utility model Figure 3 A magnified structural diagram of point A in the middle.
[0020] The following are the labels in the diagram: 1. Storage rack; 2. Support plate; 3. Adjustment structure; 4. Rotating rod; 5. Fixing structure; 6. Lifting plate; 7. Threaded rod; 8. Sliding plate; 9. Positive and negative threaded rod; 10. Fixing ring; 11. Paper storage roller; 12. Ear plate; 13. First servo motor; 14. Slide rod; 15. Worm gear; 16. Worm; 17. Second servo motor; 18. Rotary wheel; 19. Fixed plate; 20. Connecting rod. Detailed Implementation
[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0022] Please refer to the following: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The system includes: a storage rack 1, a support plate 2, an adjustment structure 3, a rotating rod 4, and a fixing structure 5. Support plates 2 are installed on both sides of the storage rack 1. The storage rack 1 serves as the basic frame for the entire buffer paper storage rack, supporting all components and providing a stable installation space. An installation groove is provided on the side of the support plate 2 closest to the storage rack 1. An adjustment structure 3 is installed inside the installation groove on one side of the support plate 2. The adjustment structure 3 is used to adjust the height of the storage rack 1. The adjustment structure 3 includes a lifting plate 6 and a threaded rod 7. The lifting plate 6 is slidably connected to the installation groove on one side of the support plate 2. A threaded hole is provided on the upper surface of the lifting plate 6. The threaded rod 7 is threadedly connected inside the threaded hole on the upper surface of the lifting plate 6. When the threaded rod 7 rotates, it is threadedly connected to the threaded hole on the upper surface of the lifting plate 6. The lifting plate 6 and the support plate 2 are connected by a threaded rod 5. The slots slide relative to each other, allowing the lifting plate 6 to be raised and lowered. The storage rack 1 is equipped with a rotating rod 4 inside. The outer surface of the rotating rod 4 is provided with a sliding groove. A fixing structure 5 is provided inside the sliding groove on the outer surface of the rotating rod 4. The fixing structure 5 includes a sliding plate 8 and a positive and negative threaded rod 9. There are two sliding plates 8, both of which are slidably connected to the sliding groove on the outer surface of the rotating rod 4. The side surfaces of the two sliding plates 8 are provided with threaded holes. The positive and negative threaded rods 9 are threaded inside the threaded holes on the side surfaces of the two sliding plates 8. Fixing rings 10 are respectively fitted on the outer surfaces of both ends of the rotating rod 4. The fixing rings 10 are slidably connected to the outer surface of the rotating rod 4 and can slide along the outer surface of the rotating rod 4. A paper storage roller 11 is provided on the outside of the rotating rod 4. The paper storage roller 11 is used to wind up the paper rolls used for printing.
[0023] In the specific implementation process, through holes are opened on both sides of the inner wall of the storage rack 1, and an installation groove is opened on the outer surface of one end of the storage rack 1. Two ear plates 12 are fixedly connected to the bottom of the installation groove. Through holes are opened on the side surfaces of the two ear plates 12. The installation groove on the outer surface of the storage rack 1 is connected to the through hole on one side of the inner wall of the storage rack 1.
[0024] The support plate 2 has a fixing groove on the upper end near the storage rack 1. A first servo motor 13 is installed inside the fixing groove on one side of the support plate 2. The first servo motor 13 is fixedly connected to the inner wall of the fixing groove on one side of the support plate 2 and is electrically connected to an external power source. A through hole is opened at the bottom of the fixing groove on one side of the support plate 2. A threaded rod 7 is rotatably connected to the through hole at the bottom of the fixing groove on one side of the support plate 2. The threaded rod 7 can rotate inside the through hole at the bottom of the fixing groove on one side of the support plate 2. The upper end of the threaded rod 7 is fixedly connected to the power output end of the first servo motor 13, and the lower end of the threaded rod 7 is rotatably connected to the bottom of the mounting groove on one side of the support plate 2. When the first servo motor 13 is started, the power output end of the first servo motor 13 rotates and drives the threaded rod 7 to rotate.
[0025] The lifting plate 6 has through holes on both ends of its upper surface. Sliding rods 14 are slidably connected inside the through holes on both ends of the lifting plate 6. The upper and lower ends of the sliding rods 14 are fixedly connected to the top and bottom of the mounting groove on one side of the support plate 2, respectively. The lifting plate 6 can slide vertically on the outer surface of the sliding rods 14 through the through holes on both ends of its upper surface. The sliding rods 14 play a role in assisting the lifting plate 6 to rise and fall. One side of the lifting plate 6 passes through the mounting groove on one side of the support plate 2 and is fixedly connected to the outer surface of the storage rack 1. When the lifting plate 6 rises and falls, it can drive the storage rack 1 to rise and fall, so that a paper storage roller 11 on the outer side of the rotating rod 4 contacts the ground, which is convenient for replacing the paper storage roller 11.
[0026] The rotating rod 4 is rotatably connected at both ends to the through holes on the inner walls of the storage rack 1. One end of the rotating rod 4 extends into the mounting groove on the outer surface of the storage rack 1, and the other end of the rotating rod 4 has a through hole that communicates with the sliding groove on the outer surface of the rotating rod 4. The end of the rotating rod 4 with the through hole extends to the outer surface of the storage rack 1. A worm gear 15 is fixedly connected to the end of the rotating rod 4 located in the mounting groove on the outer surface of the storage rack 1. When the worm gear 15 rotates, it can drive the rotating rod 4 to rotate. A worm 16 meshes below the worm gear 15. When the worm 16 rotates, it can mesh with and drive the worm gear 15 to rotate. At the same time, the worm 16 engages with the worm wheel 15. The wheel 15 has a limiting function to prevent the worm gear 15 from rotating on its own. The two ends of the worm 16 are respectively rotatably connected to the inside of the through holes on the side surfaces of the two ear plates 12. The two ear plates 12 are used to rotatably install the worm 16. A second servo motor 17 is provided at one end of the worm 16. The bottom of the second servo motor 17 is fixedly connected to the bottom of the mounting groove on the outer surface of the storage rack 1. The second servo motor 17 is electrically connected to an external power supply. The power output end of the second servo motor 17 is fixedly connected to one end of the worm 16. When the second servo motor 17 is started, the power output end of the second servo motor 17 rotates and drives the worm 16 to rotate.
[0027] Two sliding plates 8 extend through grooves on the outer surface of the rotating rod 4 at both ends, and are fixedly connected to the inner walls of fixing rings 10 on the outer surfaces of the rotating rod 4 at both ends. Threaded holes on the side surfaces of the two sliding plates 8 are located at the positive and negative threads on the outer surface of the threaded rod 9, respectively. One end of the threaded rod 9 is rotatably connected to the inner wall of the groove on the outer surface of the rotating rod 4, and the other end of the threaded rod 9 extends through a through hole at one end of the rotating rod 4 to the outer surface of the rotating rod 4. One end of the rotating rod 4 is fixedly connected to a rotating wheel 18, which is convenient for the operator to hold and rotate the positive and negative threaded rod 9. When the positive and negative threaded rod 9 rotates, since the two ends are positive and negative threads respectively, it cooperates with the threaded holes of the two sliding plates 8. When rotating, it can drive the two sliding plates 8 to move closer or further away at the same time. The two sliding plates 8 move towards or in opposite directions under the drive of the positive and negative threaded rod 9, which drives the fixing rings 10 on the outer surface of both ends of the rotating rod 4 to move synchronously. The distance between the fixing rings 10 at both ends of the rotating rod 4 can be adjusted to adapt to paper storage rollers 11 of different widths.
[0028] The paper storage roller 11 has a fixed plate 19 at each end. The side surface of the fixed plate 19 is provided with a rotating hole. The two ends of the paper storage roller 11 are rotatably connected to the rotating holes on the side surface of the fixed plate 19 at both ends of the paper storage roller 11. The outer surface of the fixed plate 19 at both ends of the paper storage roller 11 is fixedly connected to the connecting rod 20. The connecting rod 20 on the outer surface of the fixed plate 19 at both ends of the paper storage roller 11 is fixedly connected to the outer surface of the fixing ring 10 on the outer surface of the rotating rod 4 at both ends. When the fixing ring 10 slides along the outer surface of the rotating rod 4, it can drive the connecting rod 20 to move. The movement of the connecting rod 20 drives the fixed plate 19 to move, so that the fixed plate 19 can detach from or adhere to the two ends of the paper storage roller 11.
[0029] The working principle of this utility model is as follows: When the buffer paper holder of the rotary inkjet printer is working, when the printer needs to supply paper, the second servo motor 17 is started, and its power output end drives the worm gear 16 to rotate. The worm gear 16 drives the worm wheel 15 to rotate the rotating rod 4 through meshing transmission. The paper storage roller 11 on the outside of the rotating rod 4 rotates synchronously. The paper storage roller 11, which is wrapped with paper, rotates to the height of the printer's paper inlet. The operator pulls the paper wrapped on the surface of the paper storage roller 11 into the printer, releasing the paper into the printer and realizing continuous paper supply. The meshing structure of the worm gear 16 and the worm wheel 15 provides a self-locking function to ensure that the rotating rod 4 remains stable during the paper supply process, realizing uninterrupted paper supply to the printer. When the paper storage roller 11 needs to be replaced, the paper storage roller 11 is first reset, and the first servo motor 13 is started to drive the threaded rod 7 to rotate. Since the threaded rod 7 is engaged with the threaded hole of the lifting plate 6, and the lifting plate 6 is restricted by the slide rod 14 to slide only vertically, the rotation of the threaded rod 7 is converted into the linear motion of the lifting plate 6, carrying... The moving storage rack 1 lowers as a whole, allowing the paper roll 11 to be replaced to contact the ground, making it easier for the operator to remove the empty paper roll and install the new one. Before installing the new paper roll, the operator rotates the rotating wheel 18 to rotate the threaded rod 9. The threaded rod 9's two ends engage with the threaded holes of the two sliding plates 8, driving the sliding plates 8 to move in opposite directions within the groove of the rotating rod 4. This, in turn, causes the fixing ring 10 to adjust its spacing. When the fixing ring 10 slides along the outer surface of the rotating rod 4, it can move the connecting rod 20, thus connecting... The movement of lever 20 drives the fixed plate 19 to move, so that the fixed plate 19 can detach from or adhere to both ends of the paper storage roller 11. After the fixed plate 19 detaches from the paper storage roller 11, the paper storage roller 11 can be removed. The new paper storage roller 11 is placed between the two fixed plates 19. The reverse screw 9 is reversed so that the fixed plate 19 adheres to both ends of the paper storage roller 11, so that both ends of the paper storage roller 11 enter the rotating hole on the side surface of the fixed plate 19. After the replacement is completed, the first servo motor 13 reverses to raise the storage rack 1 to the working height.
[0030] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.
[0031] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A buffer paper holder for a rotary inkjet printer, comprising a storage rack (1), a support plate (2), an adjustment structure (3), a rotating rod (4), and a fixing structure (5), characterized in that, The storage rack (1) is provided with support plates (2) on both sides. The support plate (2) has an installation groove on the side near the storage rack (1). An adjustment structure (3) is provided inside the installation groove on one side of the support plate (2). The adjustment structure (3) includes a lifting plate (6) and a threaded rod (7). The lifting plate (6) is slidably connected to the installation groove on one side of the support plate (2). A threaded hole is provided on the upper surface of the lifting plate (6). A threaded rod (7) is threaded inside the threaded hole on the upper surface of the lifting plate (6). A rotating rod (4) is provided inside the storage rack (1). A sliding groove is provided on the outer surface of the rotating rod (4). A fixed structure (5) is provided inside the outer surface groove. The fixed structure (5) includes a sliding plate (8) and a positive and negative threaded rod (9). There are two sliding plates (8). Both sliding plates (8) are slidably connected to the inner surface groove of the rotating rod (4). Threaded holes are opened on the side surfaces of both sliding plates (8). The positive and negative threaded rods (9) are threaded inside the threaded holes on the side surfaces of both sliding plates (8). Fixed rings (10) are respectively fitted on the outer surfaces of both ends of the rotating rod (4). The fixed rings (10) are slidably connected to the outer surface of the rotating rod (4). A paper storage roller (11) is provided on the outer side of the rotating rod (4).
2. The buffer paper holder of the rotary inkjet printer according to claim 1, characterized in that, The storage rack (1) has through holes on both sides of its inner wall. One end of the storage rack (1) has an installation groove on its outer surface. Two ear plates (12) are fixedly connected to the bottom of the installation groove. The two ear plates (12) have through holes on their side surfaces. The installation groove on the outer surface of the storage rack (1) is connected to the through hole on one side of the inner wall of the storage rack (1).
3. The buffer paper holder of the rotary inkjet printer according to claim 1, characterized in that, The upper end of the support plate (2) is provided with a fixing groove on the side near the storage rack (1). A first servo motor (13) is provided inside the fixing groove on one side of the support plate (2). The first servo motor (13) is fixedly connected to the inner wall of the fixing groove on one side of the support plate (2). A through hole is provided at the bottom of the fixing groove on one side of the support plate (2). A threaded rod (7) is rotatably connected to the inside of the through hole at the bottom of the fixing groove on one side of the support plate (2). The upper end of the threaded rod (7) is fixedly connected to the power output end of the first servo motor (13), and the lower end of the threaded rod (7) is rotatably connected to the bottom of the mounting groove on one side of the support plate (2).
4. The buffer paper holder of the rotary inkjet printer according to claim 1, characterized in that, The upper surfaces of both ends of the lifting plate (6) are provided with through holes. Sliding rods (14) are slidably connected inside the through holes on both ends of the lifting plate (6). The upper and lower ends of the sliding rods (14) are respectively fixedly connected to the top and bottom of the mounting groove on one side of the support plate (2). One side of the lifting plate (6) passes through the mounting groove on one side of the support plate (2) and is fixedly connected to the outer surface of the storage rack (1).
5. The buffer paper holder of the rotary inkjet printer according to claim 1, characterized in that, The two ends of the rotating rod (4) are rotatably connected to the through holes on both sides of the storage rack (1). One end of the rotating rod (4) extends into the mounting groove on the outer surface of the storage rack (1). The other end of the rotating rod (4) has a through hole, which is connected to the sliding groove on the outer surface of the rotating rod (4). The end of the rotating rod (4) with the through hole extends into the outer surface of the storage rack (1). The end of the rotating rod (4) located inside the mounting groove on the outer surface of the storage rack (1) is fixedly connected to a worm gear (15). A worm (16) is meshed below the worm gear (15). The two ends of the worm (16) are rotatably connected to the through holes on the side surfaces of the two ear plates (12). A second servo motor (17) is provided at one end of the worm (16). The bottom of the second servo motor (17) is fixedly connected to the bottom of the mounting groove on the outer surface of the storage rack (1). The power output end of the second servo motor (17) is fixedly connected to one end of the worm (16).
6. The buffer paper holder of the rotary inkjet printer according to claim 1, characterized in that, The two sliding plates (8) extend through the groove on the outer surface of the rotating rod (4) to the outer surface of the rotating rod (4) at both ends. The two sliding plates (8) are fixedly connected to the inner wall of the fixing ring (10) on the outer surface of the rotating rod (4) at both ends. The threaded holes on the side surfaces of the two sliding plates (8) are located at the positive and negative threads on the outer surface of the positive and negative threaded rod (9) respectively. One end of the positive and negative threaded rod (9) is rotatably connected to the inner wall of the groove on the outer surface of the rotating rod (4). The other end of the positive and negative threaded rod (9) extends through the through hole at one end of the rotating rod (4) to the outer surface of the rotating rod (4). A rotating wheel (18) is fixedly connected to the end of the positive and negative threaded rod (9) extending to the outer surface of the rotating rod (4).
7. The buffer paper holder of the rotary inkjet printer according to claim 1, characterized in that, The paper storage roller (11) is provided with a fixed plate (19) at both ends. The side surface of the fixed plate (19) is provided with a rotating hole. The two ends of the paper storage roller (11) are rotatably connected to the inside of the rotating hole on the side surface of the fixed plate (19) at both ends of the paper storage roller (11). The outer surface of the fixed plate (19) at both ends of the paper storage roller (11) is fixedly connected with a connecting rod (20). The connecting rod (20) on the outer surface of the fixed plate (19) at both ends of the paper storage roller (11) is fixedly connected to the outer surface of the fixing ring (10) on the outer surface of both ends of the rotating rod (4).