Rotary paper bin

Abstract

The utility model relates to a rotary paper bin. The rotary paper bin comprises rotary tables arranged in pairs, a bottom plate and a clamping device. The two rotating discs are parallel to each other, the bottom plate is arranged between the two rotating discs, the two opposite sides of the bottom plate are fixedly connected with the bottom plate, and the bottom plate is arranged on the rotating discs in an annular array mode. Clamping devices are arranged on the bottom plates and are used for mounting paper tubes. According to the utility model, the plurality of bottom plates are arranged between the two bottom plates in the annular array, and the clamping devices for clamping the paper tubes are arranged on the bottom plates, so that the space utilization rate is improved, and the overall volume is reduced. In addition, paper tubes of different specifications are provided for the printer by rotating the rotating disc, and paper feeding on a shorter paper path can be realized, so that the occurrence of faults such as paper jam and paper deflection is reduced.

Description

Technical Field

[0001] The utility model relates to the field of printing, in particular to a rotating paper bin. Background Art

[0002] In the field of existing continuous printer technology, as one of the important consumables, the stable and smooth paper feeding and paper discharging mechanisms of paper tubes are directly related to the printing efficiency of printers and the user experience. When installing paper tubes, in general, engineering drawing copiers on the current market adopt the method of placing roll paper in a pull-out drawer. Each drawer is an independent paper placement unit. When it is necessary to store multiple roll papers, multiple drawers need to be set up, which greatly increases the floor area occupied by the printer. Content of the Utility Model

[0003] (1) Technical Problems to be Solved

[0004] The utility model provides a rotating paper bin, aiming to solve the problem that the existing printers occupy a large space when storing multiple roll papers.

[0005] (2) Technical Solutions

[0006] To solve the above problems, the utility model provides a rotating paper bin, which comprises: paired turntables, a bottom plate and a clamping device;

[0007] The two turntables are parallel to each other. The bottom plate is arranged between the two turntables, and both opposite sides of the bottom plate are fixedly connected to the bottom plate. The bottom plate is arranged in a circular array on the turntables;

[0008] The clamping device is arranged on the bottom plate, and the clamping device is used for installing a paper tube.

[0009] Preferably, the clamping device comprises paired clamping plates and a cone head assembly;

[0010] The clamping plates are slidably arranged on the bottom plate. The cone head assemblies are rotatably arranged on the first side surfaces of the clamping plates. The cone head assemblies on the two clamping plates are arranged oppositely, and the two cone head assemblies are used for installing a paper tube;

[0011] The cone head assembly includes: a cone head, a claw, and a first elastic member; one end face of the cone head is rotatably mounted on the clamping plate; the side surface of the cone head includes a guiding surface and a mounting surface that are connected to each other, the guiding surface has a certain taper, and the cone head is recessed inwardly on the mounting surface to form a plurality of clamping spaces, in which the claw and the first elastic member are arranged, the first end of the claw is hinged in the clamping space, one end of the first elastic member abuts against the second end of the claw, the other end of the first elastic member abuts against the cone head assembly, and the second end of the claw can extend out of the clamping space under the action of the elastic force of the first elastic member.

[0012] Preferably, the rotating paper bin further includes a paper discharging device;

[0013] The paper discharging device includes a paper discharging shaft and a paper discharging roller arranged on the paper discharging shaft, the paper discharging shaft is rotatably mounted on the bottom plate, the paper discharging shaft can drive the paper discharging roller to rotate, and the paper discharging roller can drive the paper on the paper tube to move.

[0014] Preferably, the paper discharging device further includes a driving wheel and an electromagnetic clutch;

[0015] The electromagnetic clutch and the driving wheel are both mounted on one of the turntables, and the driving wheel is rotatably connected to the turntable. The electromagnetic clutch is used to connect the driving wheel and the paper discharging shaft, and the electromagnetic clutch can control the engagement and disengagement of the driving wheel and the paper discharging shaft.

[0016] Preferably, rotating shafts are protrudingly arranged on the side surfaces of the turntables.

[0017] Preferably, the clamping device further includes a synchronous centering assembly;

[0018] The synchronous centering assembly includes a pair of synchronous racks and a centering gear located between the two synchronous racks. The centering gear meshes with the two synchronous racks; the centering gear is rotatably mounted on the bottom plate, the synchronous racks correspond to the clamping plates one by one, and the synchronous racks are fixedly connected to the clamping plates.

[0019] Preferably, the clamping device further includes a support shaft;

[0020] A first bearing and a shaft sleeve are sleeved on the support shaft, a through hole is formed through the cone head, and the cone head is fixed on the outer ring of the first bearing through the through hole;

[0021] A second bearing is provided on the bushing, and the bushing is rotatably mounted on the clamping plate through the second bearing; a driving wheel is fixedly provided on the bushing, and the bushing is fixedly connected to the conical head, and the bushing can drive the conical head to rotate; a guiding support inclined block is provided at one end of the support shaft close to the conical head.

[0022] Preferably, the clamping device further includes a driving assembly, and the driving assembly includes: a transmission guide rail, a synchronous pulley and a synchronous belt;

[0023] The transmission guide rail is rotatably mounted on the bottom plate, synchronous pulleys are rotatably provided on the second sides of the clamping plates, and the synchronous pulleys and the driving wheel are connected by the synchronous belt;

[0024] The synchronous pulley is sleeved on the transmission guide rail, the synchronous pulley can slide along the transmission guide rail, and the transmission guide rail can drive the synchronous pulley to rotate.

[0025] Preferably, the clamping device further includes a locking assembly, and the locking assembly includes a locking rack, a stop swing arm, a second elastic member and a stop block;

[0026] The locking rack is fixedly provided on the bottom plate, the stop swing arm is rotatably mounted on the clamping plate, and a stop tooth capable of meshing with the locking rack is provided on the stop swing arm;

[0027] One end of the second elastic member is fixedly connected to the stop swing arm, and the other end of the second elastic member is fixedly mounted on the clamping plate;

[0028] The stop block is slidably mounted on the clamping plate, and when the stop block slides on the clamping plate, the stop block can push the stop tooth on the stop swing arm to mesh with the locking rack.

[0029] Preferably, the locking assembly further includes a locking handle and a limit clamping plate;

[0030] The locking handle is rotatably mounted on the clamping plate, a waist-shaped hole is provided at one end of the locking handle, a connecting rod is provided in the waist-shaped hole, and the connecting rod is fixedly connected to the stop block. Rotating the other end of the locking handle can drive the stop block to slide on the clamping plate;

[0031] The limit clamping plate is fixedly provided on the clamping plate, the limit clamping plate is provided with a limit protrusion, a locking groove is provided on one side of the locking handle facing the limit clamping plate, and when the locking handle drives the stop tooth on the stop swing arm to mesh with the locking rack through the stop block, the limit protrusion can be clamped in the locking groove.

[0032] (3) Beneficial effects

[0033] In the utility model, a plurality of bottom plates are annularly arranged between two bottom plates, and a clamping device for clamping a paper tube is arranged on the bottom plates, so that the space utilization rate is improved and the overall volume is reduced. In addition, compared with the technical solution of storing paper tubes in a drawer in the prior art, the application can realize paper feeding with a shorter paper path, thereby reducing the occurrence of faults such as paper jams and paper skewing. Description of the drawings

[0034] Figure 1 is a schematic diagram of the overall structure of the rotating paper bin of the utility model;

[0035] Figure 2 is Figure 1 an enlarged view at A;

[0036] Figure 3 is an assembly schematic diagram of the clamping device and the bottom plate in the utility model;

[0037] Figure 4 is Figure 3 an enlarged view at B;

[0038] Figure 5 is a schematic diagram of the structure of the clamping device and the bottom plate in the utility model from another perspective;

[0039] Figure 6 is Figure 5 an enlarged view at C;

[0040] Figure 7 is an exploded view of the clamping device in the utility model;

[0041] Figure 8 is Figure 7 an enlarged view at D.

[0042]

Description of the reference numerals

[0043] 1: turntable; 10: paper tube; 11: rotating shaft;

[0044] 2: bottom plate;

[0045] 3: Clamping device; 31: Clamping plate; 32: Taper head assembly; 321: Taper head; 322: Claw; 323: Guide surface; 324: Mounting surface; 325: Clamping space; 326: First elastic member; 33: Synchronous centering assembly; 331: Synchronous rack; 332: Centering gear; 34: Support shaft; 341: First bearing; 342: Sleeve; 343: Second bearing; 344: Driving wheel; 345: Guide support inclined block; 35: Driving assembly; 351: Transmission guide rail; 352: Synchronous pulley; 353: Synchronous belt; 36: Locking assembly; 361: Locking rack; 362: Stop swing arm; 363: Second elastic member; 364: Stop block; 365: Locking handle; 3651: Waist-shaped hole; 3652: Connecting rod; 3653: Locking groove; 366: Limit clamping plate; 3661: Limit protrusion

[0046] 4: Paper output device; 41: Paper output shaft; 42: Paper output roller; 43: Driving wheel; 44: Electromagnetic clutch Detailed implementation manners

[0047] For better explaining the present utility model for easy understanding, the present utility model will be described in detail below in conjunction with the drawings through specific implementation manners

[0048] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly

[0049] In addition, in the present utility model, descriptions such as "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined

[0050] In the present utility model, unless otherwise clearly specified and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations

[0051] Such as Figure 1As shown in the figure, the present utility model provides a rotating paper bin, which includes: a pair of turntables 1, a bottom plate 2, and a clamping device 3. The two turntables 1 are parallel to each other. The bottom plate 2 is arranged between the two turntables 1, and both opposite sides of the bottom plate 2 are fixedly connected to the bottom plate 2. The bottom plate 2 is arranged in a circular array on the turntable 1. The clamping device 3 is arranged on each bottom plate 2, and the clamping device 3 is used for installing the paper tube 10.

[0052] In this application, a plurality of bottom plates 2 are arranged in a circular array between the two bottom plates 2, and a clamping device 3 for clamping the paper tube 10 is arranged on the bottom plate 2, which improves the space utilization rate and reduces the overall volume. In addition, during the use of this application, rotating shafts 11 protrude from the sides of the turntable 1. The turntable 1 is rotatably installed on the bracket through the rotating shafts 11. The specifications of the paper tubes 10 installed on each bottom plate 2 are different. When different specifications of paper tubes 10 are required, only need to rotate the turntable 1 so that the paper tube 10 of the corresponding specification is aligned with the outlet to complete printing. In addition, compared with the prior art technical solution of using a drawer to store the paper tube 10, this application can achieve a shorter paper path for paper feeding, thereby reducing the occurrence of faults such as paper jams and paper skew.

[0053] Furthermore, as Figures 3 - 8 shown, the clamping device 3 includes a pair of clamping plates 31 and a cone head assembly 32. The clamping plates 31 are slidably arranged on the bottom plate 2. The cone head assemblies 32 are rotatably arranged on the first side surfaces of the clamping plates 31. The cone head assemblies 32 on the two clamping plates 31 are arranged oppositely, and the two cone head assemblies 32 are used for installing the paper tube 10;

[0054] The cone head assembly 32 includes: a cone head 321 and a claw 322; one end face of the cone head 321 is rotatably installed on the clamping plate 31; the side surface of the cone head 321 includes a guiding surface 323 and an installation surface 324 that are connected to each other. The guiding surface 323 has a certain taper. A plurality of clamping spaces 325 are recessed inward on the installation surface 324 of the cone head assembly 32. A claw 322 and a first elastic member 326 are arranged in the clamping space 325. The first end of the claw 322 is hinged in the clamping space 325. One end of the first elastic member 326 abuts against the second end of the claw 322, and the other end of the first elastic member 326 abuts against the cone head assembly 32. The second end of the claw 322 can protrude from the clamping space 325 under the action of the elastic force of the first elastic member 326.

[0055] In the above solution, multiple teeth are provided at the second end of the jaw 322 for abutting against the inner wall of the through hole on the paper tube 10, which can increase the friction between the jaw 322 and the paper tube 10 and reduce the possibility of sliding between the paper tube 10 and the tapered head 321. In addition, a slope is provided at the second end of the jaw 322, and the slope at the second end of the jaw 322 is connected to the top end of the jaw 322, so that the inner wall of the through hole on the paper tube 10 can slide along the guiding surface 323 to the slope at the second end of the jaw 322 and finally move to the top end of the teeth, realizing the abutment between the jaw 322 and the through hole in the paper tube 10. That is, by providing a slope at the second end of the jaw 322 and cooperating with the tapered guiding surface 323, it is convenient to install the paper tube 10 on the tapered head 321.

[0056] Further, the clamping device 3 further includes a synchronous centering assembly 33. The synchronous centering assembly 33 includes a pair of synchronous racks 331 and a centering gear 332 located between the two synchronous racks 331. The centering gear 332 meshes with the two synchronous racks 331; the centering gear 332 is rotatably mounted on the bottom plate 2, the synchronous racks 331 correspond to the clamping plates 31 one by one, and the synchronous racks 331 are fixedly connected to the clamping plates 31.

[0057] Paper is wound around the paper tube 10. When specifically installing the paper tube 10, by pushing the two tapered heads 321 or one of the tapered heads 321, the clamping plate 31 corresponding to the tapered head 321 drives the centering gear 332 to rotate through the synchronous rack 331. The centering gear 332 drives the other synchronous rack 331 to move in the opposite direction, thereby driving the corresponding clamping plate 31 to move. Finally, the tapered heads 321 on the two clamping plates 31 can move towards each other synchronously (i.e., move in opposite directions at the same time), so the two tapered heads 321 can clamp paper tubes 10 of different widths. The inner wall of the through hole in the paper tube 10 can slide along the guiding surface 323 to the mounting surface 324. At this time, the inner wall of the through hole abuts against the second end of the jaw 322. At this time, the second end of the jaw 322 can abut against the inner wall of the through hole on the paper tube 10, avoiding relative sliding between the paper tube 10 and the docking head and ensuring normal printing. In a preferred embodiment, the first elastic member can be an elastic sleeve or a spring. By providing two synchronous racks 331 and providing a centering gear 332 meshing with them between the two synchronous racks 331, it is ensured that the two synchronous racks 331 can move synchronously in opposite directions at the same time, and further ensured that the two tapered heads 321 can clamp paper tubes 10 of different widths. In addition, jaws 322 are provided on the tapered heads 321 to abut against the inner wall of the paper tube 10, increasing the friction between the tapered heads 321 and the paper tube 10 and avoiding relative sliding between the paper tube 10 and the tapered heads 321, ensuring normal printing.

[0058] In a preferred embodiment, the clamping device 3 further includes a support shaft 34. A first bearing 341 and a bushing 342 are sleeved on the support shaft 34. A through hole is provided through the tapered head 321, and the tapered head 321 is fixed on the outer ring of the first bearing 341 through the through hole. A second bearing 343 is provided on the bushing 342, and the bushing 342 is rotatably mounted on the clamping plate 31 through the second bearing 343; a power wheel 344 is fixedly provided on the bushing 342, and the bushing 342 is fixedly connected to the tapered head 321, and the bushing 342 can drive the tapered head 321 to rotate; a guiding and supporting inclined block 345 is provided at one end of the support shaft 34 close to the tapered head 321.

[0059] The tapered head 321 is mounted on the support shaft 34 through the first bearing 341, and the tapered head 321 can rotate on the support shaft 34. When the printer is in use, the paper on the paper tube 10 can extend under the action of an external force, without affecting the normal printing. When it is necessary to retract the paper, the bushing 342 is driven to rotate by the power wheel 344, the bushing 342 drives the tapered head 321 to rotate, and the rotation of the tapered head 321 further brings the extended paper back onto the paper tube 10 to achieve paper retraction. When clamping the paper tube 10, only the two ends of the paper tube 10 need to be sleeved on the guiding and supporting inclined block 345, and then the tapered head 321 is pushed, and the two ends of the paper tube 10 can move along the guiding and supporting inclined block 345 to the tapered head 321, accelerating the clamping speed of the paper tube 10.

[0060] Furthermore, the clamping device 3 further includes a driving assembly 35, and the driving assembly 35 includes: a transmission guide rail 351, a synchronous pulley 352 and a synchronous belt 353. The transmission guide rail 351 is rotatably mounted on the bottom plate 2, synchronous pulleys 352 are rotatably provided on the second side surfaces of the clamping plate 31, and the synchronous pulleys 352 and the power wheel 344 are connected by a synchronous belt 353. The synchronous pulley 352 is sleeved on the transmission guide rail 351, and the synchronous pulley 352 can slide along the transmission guide rail 351, and the transmission guide rail 351 can drive the synchronous pulley 352 to rotate. The synchronous pulley 352 can only slide on the transmission guide rail 351 and cannot rotate relative to the transmission guide rail 351. The transmission guide rail 351 is used to drive the two synchronous pulleys 352 to rotate synchronously, and the synchronous pulley 352 drives the power wheel 344 to rotate, realizing that the docking heads at both ends of the paper tube 10 can drive the paper tube 10 to rotate synchronously. In a preferred embodiment, the bottom plate 2 is provided with a driving motor, and the driving motor can drive the transmission guide rail 351 to rotate. The driving motor is used to drive the transmission guide rail 351 to rotate.

[0061] In addition, as Figure 1 and Figure 2As shown in the figure, the rotating paper bin further includes a paper feeding device 4. The paper feeding device 4 includes a paper feeding shaft 41 and a paper feeding roller 42 arranged on the paper feeding shaft 41. The paper feeding shaft 41 is rotatably installed on the bottom plate 2. The paper feeding shaft 41 can drive the paper feeding roller 42 to rotate, and the paper feeding roller 42 can drive the paper on the paper tube 10 to move. By controlling the rotation of the paper feeding roller 42, the paper tube 10 on the corresponding cone head 321 can be driven to rotate, realizing paper feeding. It should be noted that before printing, the turntable 1 will rotate the paper tube 10 of the corresponding specification to the corresponding station according to the need. When the printer is printing, the paper feeding roller 42 on the bottom plate 2 at the corresponding station rotates, and the paper feeding roller 42 drives the paper on the cone head 321 to move, that is, the paper feeding roller 42 drives the paper tube 10 and the cone head 321 to rotate through the paper, realizing paper feeding. When paper needs to be retracted, the transmission guide rail 351 is rotated to drive the synchronous wheel 352 to rotate. The synchronous wheel 352 drives the power wheel 344 to rotate through the belt, and the power wheel 344 drives the cone head 321 to reverse through the bushing 342, realizing paper retraction.

[0062] The paper feeding device 4 further includes a driving wheel 43 and an electromagnetic clutch 44. The electromagnetic clutch 44 and the driving wheel 43 are both installed on a turntable 1, and the driving wheel 43 is rotatably connected to the turntable 1. The electromagnetic clutch 44 is used to connect the driving wheel 43 and the paper feeding shaft 41, and the electromagnetic clutch 44 can control the engagement and disengagement of the driving wheel 43 and the paper feeding shaft 41. The setting of the electromagnetic clutch 44 can select whether to transmit the power of the driving wheel 43 to the paper feeding shaft 41, and controlling the clutch can control whether the paper tube 10 on the corresponding bottom plate 2 feeds paper.

[0063] Finally, the clamping device 3 further includes a locking assembly 36. The locking assembly 36 includes a locking rack 361, a stop swing arm 362, a second elastic member 363, and a stop block 364. The locking rack 361 is fixedly arranged on the bottom plate 2. The stop swing arm 362 is rotatably installed on the clamping plate 31, and a stop tooth that can mesh with the locking rack 361 is arranged on the stop swing arm 362. One end of the second elastic member 363 is fixedly connected to the stop swing arm 362, and the other end of the second elastic member 363 is fixedly installed on the clamping plate 31. The stop block 364 is slidably installed on the clamping plate 31, and when the stop block 364 slides on the clamping plate 31, the stop block 364 can push the stop tooth on the stop swing arm 362 to mesh with the locking rack 361.

[0064] When the conical head 321 on the clamping plate 31 does not clamp the paper tube 10, the second elastic member 363 can pull the stop swing arm 362 to the first working position. At this time, the stop teeth on the stop swing arm 362 do not engage with the locking rack 361, and the clamping plate 31 can slide normally on the bottom plate 2. After the conical head 321 on the clamping plate 31 clamps the paper tube 10, the stop block 364 is pushed to swing the stop swing arm 362 to the second working position. At this time, the stop teeth engage with the locking rack 361. Since the locking rack 361 is fixed, the locking plate is also fixed at this time, ensuring that when the printer is working, the conical heads 321 on the two clamping plates 31 will not slide relative to the bottom plate 2, ensuring the long-term clamping of the paper tube 10.

[0065] The locking assembly 36 further includes a locking handle 365 and a limit clamping plate 366. The locking handle 365 is rotatably mounted on the clamping plate 31. One end of the locking handle 365 is provided with an oblong hole 3651, and a connecting rod 3652 is arranged in the oblong hole 3651. The connecting rod 3652 is fixedly connected to the stop block 364. Rotating the other end of the locking handle 365 can drive the stop block 364 to slide on the clamping plate 31. The limit clamping plate 366 is fixedly arranged on the clamping plate 31. The limit clamping plate 366 is provided with a limit protrusion 3661. A locking groove 3653 is arranged on one side of the locking handle 365 facing the limit clamping plate 366. When the stop teeth on the stop swing arm 362 are engaged with the locking rack 361 by driving the stop block 364 by the locking handle 365, the limit protrusion 3661 can be clamped in the locking groove 3653. When the user rotates the locking handle 365 to drive the stop block 364 to move, and then pushes the stop swing arm 362 to the second working position, the limit protrusion 3661 on the limit clamping plate 366 is located in the locking groove 3653. At this time, the second elastic member 363 is in a stretched state, and the stop swing arm 362 has a tendency to move to the first working position. Therefore, both the stop block 364 and the locking handle 365 have a tendency to move in the direction opposite to the rotation direction of the user. At this time, the limit protrusion 3661 can be clamped in the locking groove 3653 to avoid the above movement, that is, the elastic force of the limit clamping plate 366 is used to offset the elastic force of the second elastic member 363, ensuring that the stop teeth on the stop swing arm 362 are always engaged with the locking rack 361.

[0066] It should be understood that the above description of the specific embodiments of the present invention is only for explaining the technical route and characteristics of the present invention, and its purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. However, the present invention is not limited to the above specific embodiments. Any changes or modifications made within the scope of the claims of the present invention should be covered by the protection scope of the present invention.

Claims

1. A rotating paper bin, characterized in that, The rotating paper bin includes: paired turntables (1), a bottom plate (2), and a clamping device (3); The two turntables (1) are parallel to each other. The bottom plate (2) is arranged between the two turntables (1), and both opposite sides of the bottom plate (2) are fixedly connected to the bottom plate (2). The bottom plate (2) is arranged in a circular array on the turntable (1); The clamping device (3) is arranged on the bottom plate (2), and the clamping device (3) is used for installing a paper tube (10).

2. The rotary paper cassette according to claim 1, wherein, The clamping device (3) includes paired clamping plates (31) and a tapered head assembly (32); The clamping plates (31) are slidably arranged on the bottom plate (2). The tapered head assemblies (32) are rotatably arranged on the first side surfaces of the clamping plates (31). The tapered head assemblies (32) on the two clamping plates (31) are arranged oppositely, and the two tapered head assemblies (32) are used for installing the paper tube (10); The tapered head assembly (32) includes: a tapered head (321), a claw (322), and a first elastic member (326); one end face of the tapered head (321) is rotatably installed on the clamping plate (31); the side surface of the tapered head (321) includes a connected guiding surface (323) and an installation surface (324). The guiding surface (323) has a taper. The tapered head (321) is recessed inward on the installation surface (324) with a plurality of clamping spaces (325). The claw (322) and the first elastic member (326) are arranged in the clamping space (325). The first end of the claw (322) is hinged in the clamping space (325). One end of the first elastic member (326) abuts against the second end of the claw (322). The other end of the first elastic member (326) abuts against the tapered head assembly (32). The second end of the claw (322) can extend out of the clamping space (325) under the action of the elastic force of the first elastic member (326).

3. The rotary paper cassette according to claim 2, wherein, The rotating paper bin further includes a paper feeding device (4); The paper feeding device (4) includes a paper feeding shaft (41) and a paper feeding roller (42) arranged on the paper feeding shaft (41). The paper feeding shaft (41) is rotatably installed on the bottom plate (2). The paper feeding shaft (41) can drive the paper feeding roller (42) to rotate, and the paper feeding roller (42) can drive the paper on the paper tube (10) to move.

4. The rotary paper cassette according to claim 3, characterized in that, The paper feeding device (4) further includes a driving wheel (43) and an electromagnetic clutch (44); The electromagnetic clutch (44) and the driving wheel (43) are both installed on one of the turntables (1), and the driving wheel (43) is rotatably connected to the turntable (1). The electromagnetic clutch (44) is used for connecting the driving wheel (43) and the paper feeding shaft (41), and the electromagnetic clutch (44) can control the engagement and disengagement between the driving wheel (43) and the paper feeding shaft (41).

5. The rotary paper cassette according to any one of claims 1-4, characterized in that, Rotating shafts (11) protrude on the side surfaces of the turntables (1).

6. The rotating paper cassette according to any one of claims 2-4, characterized in that, The clamping device (3) further includes a synchronous centering assembly (33); The synchronization and centering component (33) includes a pair of synchronization racks (331) and a centering gear (332) located between the two synchronization racks (331). The centering gear (332) meshes with the two synchronization racks (331). The centering gear (332) is rotatably installed on the base plate (2). The synchronization racks (331) correspond to the clamping plates (31) one by one, and the synchronization racks (331) are fixedly connected to the clamping plates (31).

7. The rotary paper bin according to any one of claims 2-4, characterized in that, The clamping device (3) further includes a support shaft (34); A first bearing (341) and a shaft sleeve (342) are sleeved on the support shaft (34). A through hole is provided through the tapered head (321), and the tapered head (321) is fixed on the outer ring of the first bearing (341) through the through hole; A second bearing (343) is provided on the shaft sleeve (342), and the shaft sleeve (342) is rotatably installed on the clamping plate (31) through the second bearing (343). A power wheel (344) is fixedly provided on the shaft sleeve (342). The power wheel (344) can drive the shaft sleeve (342) to rotate, and the shaft sleeve (342) is fixedly connected to the tapered head (321), and the shaft sleeve (342) can drive the tapered head (321) to rotate. A guiding and supporting inclined block (345) is provided at one end of the support shaft (34) close to the tapered head (321).

8. The rotary paper bin according to claim 7, wherein The clamping device (3) further includes a driving component (35). The driving component (35) includes: a transmission guide rail (351), a synchronous pulley (352), and a synchronous belt (353); The transmission guide rail (351) is rotatably installed on the base plate (2). The synchronous pulleys (352) are rotatably provided on the second side surfaces of the clamping plates (31). The synchronous pulleys (352) and the power wheel (344) are connected by the synchronous belt (353); The synchronous pulley (352) is sleeved on the transmission guide rail (351), and the synchronous pulley (352) can slide along the transmission guide rail (351), and the transmission guide rail (351) can drive the synchronous pulley (352) to rotate.

9. The rotary paper cassette according to any one of claims 2 to 4, characterized in that, The clamping device (3) further includes a locking component (36). The locking component (36) includes a locking rack (361), a stop swing arm (362), a second elastic member (363), and a stop block (364); The locking rack (361) is fixedly provided on the base plate (2). The stop swing arm (362) is rotatably installed on the clamping plate (31), and a stop tooth capable of meshing with the locking rack (361) is provided on the stop swing arm (362); One end of the second elastic member (363) is fixedly connected to the stop swing arm (362), and the other end of the second elastic member (363) is fixedly installed on the clamping plate (31); The stop block (364) is slidably mounted on the clamping plate (31), and when the stop block (364) slides on the clamping plate (31), the stop block (364) can push the stop teeth on the stop swing arm (362) to engage with the locking rack (361).

10. The rotary paper bin according to claim 9, wherein The locking assembly (36) further includes a locking handle (365) and a limit clamping plate (366); The locking handle (365) is rotatably mounted on the clamping plate (31). A waist-shaped hole (3651) is provided at one end of the locking handle (365), and a connecting rod (3652) is arranged in the waist-shaped hole (3651). The connecting rod (3652) is fixedly connected to the stop block (364). Rotating the other end of the locking handle (365) can drive the stop block (364) to slide on the clamping plate (31); The limit clamping plate (366) is fixedly arranged on the clamping plate (31). The limit clamping plate (366) is provided with a limit protrusion (3661). A locking groove (3653) is arranged on one side of the locking handle (365) facing the limit clamping plate (366). When the locking handle (365) drives the stop teeth on the stop swing arm (362) to engage with the locking rack (361) through the stop block (364), the limit protrusion (3661) can be clamped in the locking groove (3653).

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