Inkjet blueprint printer

Abstract

The utility model relates to an ink-jet blueprint printer which comprises a rotary paper bin and a printing device. The rotating paper bin comprises rotating discs arranged in pairs, a bottom plate, a clamping device and a paper outlet device. Two opposite sides of the bottom plate are fixedly connected with the bottom plate; the clamping device and the paper delivery device are both arranged on the bottom plate, and the clamping device is used for mounting a paper tube; the paper delivery device comprises a paper delivery shaft and a paper delivery roller arranged on the paper delivery shaft, the paper delivery roller can drive paper on a paper tube to move, the paper tube is located on one side of the paper delivery roller, and the other side of the paper delivery roller can face an inlet of the paper delivery device. The printing device comprises a printing assembly and a conveying assembly. The printing assembly comprises an ink jet head, and the conveying assembly comprises a conveying belt and a negative pressure fan. Negative pressure holes are formed in the conveying belt in an array mode, the negative pressure fan is arranged on one side of the conveying belt, and the ink jet head is located on the other side of the conveying belt. Negative pressure is formed in the negative pressure holes through the negative pressure fan so that paper can be sucked, and the paper and the conveying belt cannot slide.

Description

Technical Field

[0001] The utility model relates to the field of printers, in particular to an inkjet blueprint printer. Background Art

[0002] The principle of a blueprint printer is the same as that of a common office printer. However, a small office printer can only print manuscripts with a maximum A3 format, while a blueprint printer is usually used to print design drawings, and the format of design drawings is usually in large formats such as A0, A1, A2, etc. Therefore, existing blueprint printers need to store drawings of different specifications.

[0003] When existing blueprint printers print large-format design drawings, the paper is prone to sliding during the printing process, which may lead to an unsatisfactory printing effect. Summary of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] The utility model provides an inkjet blueprint printer, aiming to solve the problem that the paper is prone to sliding when the existing blueprint machine prints large-format drawings.

[0006] (2) Technical Solutions

[0007] To solve the above problems, the utility model provides an inkjet blueprint printer, which includes: a rotating paper bin and a printing device;

[0008] The rotating paper bin includes: paired turntables, a bottom plate, a clamping device, and a paper outlet device; 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 turntable; the clamping device and the paper outlet device are both arranged on the bottom plate. The clamping device is used to install a paper tube; the paper outlet device includes a paper outlet shaft and a paper outlet roller arranged on the paper outlet shaft. The paper outlet shaft is rotatably installed on the bottom plate, and the paper outlet roller can drive the paper on the paper tube to move. The paper tube is located on one side of the paper outlet roller, and the other side of the paper outlet roller can be the inlet facing the paper outlet device;

[0009] The printing device includes: a printing component and a conveying component; the printing component includes an inkjet head, and the conveying component includes a conveying belt and a negative pressure fan. The conveying belt is provided with negative pressure holes in an array, the negative pressure fan is arranged on one side of the conveying belt, the inkjet head is located on the other side of the conveying belt, and the inkjet head faces the conveying belt. The paper outlet roller can convey the paper on the paper tube to the conveying belt.

[0010] Preferably, the printing device further includes a bracket, on which a guide rail is provided. The length direction of the guide rail is perpendicular to the movement direction of the paper. An inkjet rack is slidably provided on the bracket, and a plurality of the inkjet heads are provided on the inkjet rack.

[0011] Preferably, the conveying assembly further includes an inlet conveying wheel, an outlet conveying wheel and two conveying rollers, all of which are rotatably provided on the bracket;

[0012] The conveying belt is wound around the two conveying rollers. The inlet conveying wheel and the outlet conveying wheel correspond to the conveying rollers one by one, and both the inlet conveying wheel and the outlet conveying wheel are located on one side of the conveying rollers. The paper can enter the conveying belt from the inlet conveying wheel.

[0013] Preferably, the rotating paper bin further includes a rotating frame;

[0014] The turntable is rotatably installed on the rotating frame. An electromagnetic clutch and a driving wheel are provided on one of the two turntables, and the driving wheel is rotatably connected to the turntable. The electromagnetic clutch is used to connect the driving wheel and the paper outlet shaft, and the electromagnetic clutch can control the engagement and disengagement of the driving wheel and the paper outlet shaft.

[0015] Preferably, a rotating motor and a rotating gear are provided on the rotating frame. The rotating motor is fixedly installed on the rotating frame, and the rotating motor can drive the rotating gear to rotate; a rotating tooth meshing with the rotating gear is provided at the edge of the turntable.

[0016] Preferably, the clamping device includes a pair of clamping plates and a cone head assembly;

[0017] The clamping plates are slidably provided on the bottom plate. The cone head assemblies are rotatably provided 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 the paper tube;

[0018] The cone head assembly includes: a cone head, a claw and a first elastic member; one end face of the cone head is rotatably installed on the clamping plate; the side surface of the cone head includes a guiding surface and an installation surface which are connected to each other. The guiding surface has a certain taper. A plurality of clamping spaces are recessed inward on the installation surface of the cone head. The claw and the first elastic member are provided in the clamping space. 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, and the other end of the first elastic member abuts against the cone head assembly. 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.

[0019] Preferably, the clamping device further includes a driving assembly, and the driving assembly includes: a transmission guide rail, a synchronous pulley, a synchronous belt, and a driving pulley;

[0020] The transmission guide rail is rotatably installed on the bottom plate, and the synchronous pulley and the driving pulley are rotatably arranged on the second side surface of the clamping plate. The synchronous pulley and the driving pulley are connected by the synchronous belt, and the driving pulley is fixedly connected to the tapered head, and the driving pulley can drive the tapered head to rotate;

[0021] 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.

[0022] Preferably, the clamping device further includes a synchronous centering assembly;

[0023] 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 installed 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, and the clamping plates can drive the synchronous racks to slide.

[0024] 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;

[0025] The locking rack is fixedly arranged on the bottom plate, the stop swing arm is rotatably installed on the clamping plate, and a stop tooth capable of meshing with the locking rack is arranged on the stop swing arm;

[0026] 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 installed on the clamping plate;

[0027] The stop block is slidably installed 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.

[0028] Preferably, the locking assembly further includes a locking handle and a limit card plate;

[0029] The locking handle is rotatably installed on the clamping plate. One end of the locking handle is provided with a waist-shaped hole, and a connecting rod is arranged in the waist-shaped hole. The connecting rod is fixedly connected to the stop block, and rotating the other end of the locking handle can drive the stop block to slide on the clamping plate;

[0030] The limiting clamping plate is fixedly arranged on the clamping plate. The limiting clamping plate is provided with limiting protrusions. On one side of the locking handle facing the limiting clamping plate, a locking groove is arranged. When the locking handle drives the locking teeth on the locking swing arm to engage with the locking rack through the stop block, the limiting protrusions can be clamped in the locking groove.

[0031] (III) Advantageous Effects

[0032] In the present utility model, the conveying belt drives the paper on the paper tube to move below the inkjet head. Then, negative pressure holes are arranged in an array on the conveying belt. The negative pressure fan can form negative pressure in the negative pressure holes to suck the paper. When the inkjet head prints on the paper, there is no relative sliding between the paper and the conveying belt, ensuring the printing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a side view of the inkjet blueprint printer of the present utility model;

[0034] Figure 2 It is Figure 1 an enlarged view at A;

[0035] Figure 3 It is a top view of the conveying belt in the present utility model;

[0036] Figure 4 It is a structural schematic diagram of the rotating paper bin in the present utility model;

[0037] Figure 5 It is a side view of the rotating paper bin in the present utility model;

[0038] Figure 6 It is a structural schematic diagram of the turntable, bottom plate and clamping device in the present utility model;

[0039] Figure 7 It is Figure 6 an enlarged view at B;

[0040] Figure 8 It is a structural schematic diagram of the clamping device on the bottom plate in the present utility model;

[0041] Figure 9 It is Figure 8 an enlarged view at C;

[0042] Figure 10 It is a structural schematic diagram of the clamping device on the bottom plate from another perspective in the utility model;

[0043] Figure 11 It is Figure 10 an enlarged view at D;

[0044] Figure 12This is an enlarged view of the claw at the conical head in the present utility model.

[0045]

Explanation of the Reference Numerals in the Drawings

[0046] 1: Rotating paper bin; 11: Turntable; 12: Bottom plate; 13: Clamping device; 131: Clamping plate; 132: Conical head assembly; 1321: Conical head; 1322: Claw; 1323: First elastic member; 1324: Guide surface; 1325: Mounting surface; 1326: Clamping space; 133: Driving assembly; 1331: Transmission guide rail; 1332: Synchronous pulley; 1333: Synchronous belt; 1334: Power wheel; 134: Synchronous centering assembly; 1341: Synchronous rack; 1342: Centering gear; 135: Locking assembly; 1351: Locking rack; 1352: Stop swing arm; 1353: Second elastic member; 1354: Stop block; 1355: Locking handle; 1356: Limit clamping plate; 1357: Waist-shaped hole; 1358: Link; 1359: Locking groove; 1360: Limit projection; 14: Paper outlet device; 141: Paper outlet shaft; 142: Paper outlet roller; 15: Rotating frame; 151: Electromagnetic clutch; 152: Driving wheel; 153: Rotating motor; 154: Rotating gear;

[0047] 2: Printing device; 21: Inkjet head; 22: Conveying assembly; 221: Conveying belt; 222: Negative pressure fan; 223: Negative pressure hole; 224: Inlet conveying wheel; 225: Outlet conveying wheel; 226: Conveying roller; 23: Bracket; 231: Guide rail; 232: Inkjet rack;

[0048] 3: Paper tube. Detailed Embodiment

[0049] For better explaining the present utility model and facilitating understanding, the present utility model will be described in detail below with reference to the drawings through specific embodiments.

[0050] It should be noted that all the 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 positional 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.

[0051] In addition, the descriptions such as "first" and "second" in the present utility model 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, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0052] In the present utility model, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. 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 circumstances.

[0053] The present utility model provides an inkjet blueprint printer, which includes a rotating paper bin 1 and a printing device 2. The rotating paper bin 1 includes: paired turntables 11, a bottom plate 12, a clamping device 13, and a paper output device 14; the two turntables 11 are parallel to each other, the bottom plate 12 is arranged between the two turntables 11, and both opposite sides of the bottom plate 12 are fixedly connected to the bottom plate 12. The bottom plate 12 is arranged in a circular array on the turntable 11; both the clamping device 13 and the paper output device 14 are arranged on the bottom plate 12. The clamping device 13 is used to install a paper tube 3; the paper output device 14 includes a paper output shaft 141 and a paper output roller 142 arranged on the paper output shaft 141. The paper output shaft 141 is rotatably installed on the bottom plate 12. The paper output roller 142 can drive the paper on the paper tube 3 to move. The paper tube 3 is located on one side of the paper output roller 142, and the other side of the paper output roller 142 can be the inlet facing the paper output device 14;

[0054] The printing device 2 includes: a printing component and a conveying component 22; the printing component includes an inkjet head 21, and the conveying component 22 includes a conveying belt 221 and a negative pressure fan 222. Negative pressure holes 223 are arranged in an array on the conveying belt 221. The negative pressure fan 222 is arranged on one side of the conveying belt 221. The inkjet head 21 is located on the other side of the conveying belt 221, and the inkjet head 21 faces the conveying belt 221. The paper output roller 142 can convey the paper on the paper tube 3 onto the conveying belt 221.

[0055] In the utility model, the conveyor belt 221 is used to drive the paper on the paper tube 3 to move to the bottom of the inkjet head 21, and then the negative pressure holes 223 are arranged in an array on the conveyor belt 221. The negative pressure fan 222 can form a negative pressure in the negative pressure hole 223 to absorb the paper. When the inkjet head 21 prints on the paper, the paper and the conveyor belt 221 will not slide relative to each other, thereby ensuring the printing effect. In addition, multiple negative pressure fans 222 are arranged, and by controlling whether different negative pressure fans 222 are working, the vacuum paper feeding range can be adjusted according to different specifications of the paper, and different specifications of paper can be adsorbed. Multiple bottom plates 12 are arranged in an annular array between the two rotating disks 11, and a clamping device 13 for clamping the paper tube 3 is arranged on the bottom plate 12, thereby improving the space utilization rate and reducing the overall volume. In addition, compared with the technical solution of using a drawer to store the paper tube 3 in the prior art, the present application can achieve a shorter paper path for paper feeding, thereby reducing the occurrence of faults such as paper jams and paper deflection.

[0056] In a preferred embodiment, the printing device 2 also includes a bracket 23, on which a guide rail 231 is arranged, the length direction of the guide rail 231 is perpendicular to the movement direction of the paper, and an inkjet frame 232 is slidably arranged on the bracket 23, on which a plurality of inkjet heads 21 are arranged.

[0057] Furthermore, the conveying assembly 22 also includes an inlet conveying wheel 224, an outlet conveying wheel 225 and two conveying rollers 226, which are all rotatably arranged on the bracket 23. The conveying belt 221 is wound around the two conveying rollers 226, and the inlet conveying wheel 224 and the outlet conveying wheel 225 correspond to the conveying rollers 226 one by one, and the inlet conveying wheel 224 and the outlet conveying wheel 225 are both located on one side of the conveying roller 226, and the paper can enter the conveying belt 221 from the inlet conveying wheel 224. In the above scheme, the inlet conveying wheel 224 is located above the conveying belt 221, and there is a gap between the conveying belt 221 and the inlet conveying wheel 224, and the paper enters the conveying belt 221 from the above gap, and the inlet conveying wheel 224 can press the paper onto the conveying belt 221, thereby ensuring that the paper moves smoothly to the bottom of the inkjet head 21. Similarly, the paper can move from the outlet conveying wheel 225 and detach from the conveying belt 221.

[0058] In addition, the rotating paper bin 1 further includes a rotating frame 15. The turntable 11 is rotatably mounted on the rotating frame 15. An electromagnetic clutch 151 and a driving wheel 152 are provided on one of the two turntables 11. The driving wheel 152 is rotatably connected to the turntable 11. The electromagnetic clutch 151 is used to connect the driving wheel 152 and the paper outlet shaft 141, and the electromagnetic clutch 151 can control the engagement and disengagement between the driving wheel 152 and the paper outlet shaft 141. In the above solution, the driving wheels 152 on the rotating disc are all connected through a pulley group, and the driving wheels 152 are all driven by one motor, that is, all the driving wheels 152 are in a rotating state. If it is necessary to feed paper from the paper tube 3 on the corresponding base plate 12, first rotate the turntable 11 to align the paper outlet roller 142 on the corresponding base plate 12 with the inlet of the printing device 2 (i.e., at the inlet conveying wheel 224), and then control the electromagnetic clutch 151 to work, transmit the torque on the driving wheel 152 to the paper outlet shaft 141. The paper outlet shaft 141 drives the paper outlet roller 142 to rotate, and the paper outlet roller 142 drives the paper on the paper tube 3 to move onto the conveying belt 221, and then the printing work can be completed.

[0059] In a specific embodiment, a rotating motor 153 and a rotating gear 154 are provided on the rotating frame 15. The rotating motor 153 is fixedly mounted on the rotating frame 15, and the rotating motor 153 can drive the rotating gear 154 to rotate; a rotating tooth meshing with the rotating gear 154 is provided at the edge of the turntable 11. By means of the rotating motor 153, the rotation of the turntable 11 on the rotating frame 15 can be controlled, and the corresponding paper tube 3 in the rotating paper bin 1 can be controlled to supply paper to the printing device 2.

[0060] Furthermore, the clamping device 13 includes a pair of clamping plates 131 and a tapered head assembly 132. The clamping plates 131 are slidably arranged on the bottom plate 12, and the tapered head assemblies 132 are rotatably arranged on the first side surfaces of the clamping plates 131. The tapered head assemblies 132 on the two clamping plates 131 are arranged oppositely, and the two tapered head assemblies 132 are used for mounting the paper tube 3. The tapered head assembly 132 includes: a tapered head 1321, a claw 1322, and a first elastic member 1323; one end face of the tapered head 1321 is rotatably mounted on the clamping plate 131; the side surface of the tapered head 1321 includes a guiding surface 1324 and a mounting surface 1325 that are connected to each other. The guiding surface 1324 has a certain taper. The tapered head 1321 is recessed inwardly on the mounting surface 1325 to form a plurality of clamping spaces 1326. The clamping spaces 1326 are provided with the claws 1322 and the first elastic member 1323. The first end of the claw 1322 is hinged in the clamping space 1326. One end of the first elastic member 1323 abuts against the second end of the claw 1322, and the other end of the first elastic member 1323 abuts against the tapered head assembly 132. The second end of the claw 1322 can protrude out of the clamping space 1326 under the action of the elastic force of the first elastic member 1323. In a general implementation, the paper tube 3 is wound with paper, and the paper tube 3 is provided with a through hole along the central direction. The tapered head 1321 is inserted into both ends of the through hole, thereby realizing the installation of the paper tube 3.

[0061] In the above solution, the second end of the claw 1322 is provided with a plurality of teeth for abutting against the inner wall of the through hole on the paper tube 3, which can increase the friction force between the claw 1322 and the paper tube 3, reduce the possibility of sliding between the paper tube 3 and the tapered head 1321, and avoid sliding between the paper tube 3 and the tapered head 1321 during paper feeding. In addition, a slope is provided at the second end of the claw 1322, and the slope at the second end of the claw 1322 is connected to the top end of the claw 1322, so that the inner wall of the through hole on the paper tube 3 can slide along the guiding surface 1324 to the slope at the second end of the claw 1322 and finally move to the top end of the teeth, realizing the abutment between the claw 1322 and the through hole in the paper tube 3. That is, the slope provided at the second end of the claw 1322 is used in cooperation with the guiding surface 1324 having a taper, which is convenient for installing the paper tube 3 on the tapered head 1321.

[0062] Preferably, the clamping device 13 further includes a driving assembly 133, and the driving assembly 133 includes: a transmission guide rail 2311331, a synchronous pulley 1332, a synchronous belt 1333, and a driving pulley 1334. The transmission guide rail 2311331 is rotatably mounted on the bottom plate 12. Synchronous pulleys 1332 and driving pulleys 1334 are rotatably arranged on the second side surfaces of the clamping plates 131. The synchronous pulleys 1332 and the driving pulleys 1334 are connected by a synchronous belt 1333. The driving pulley 1334 is fixedly connected to the conical head 1321, and the driving pulley 1334 can drive the conical head 1321 to rotate. The synchronous pulley 1332 is sleeved on the transmission guide rail 2311331, and the synchronous pulley 1332 can slide along the transmission guide rail 2311331. The transmission guide rail 2311331 can drive the synchronous pulley 1332 to rotate. The synchronous pulley 1332 can only slide along the transmission guide rail 2311331 and cannot rotate relative to the transmission guide rail 2311331. By using the transmission guide rail 2311331 to drive the two synchronous pulleys 1332 to rotate synchronously, and the synchronous pulley 1332 drives the driving pulley 1334 to rotate, it is realized that the docking heads at both ends of the paper tube 3 can drive the paper tube 3 to rotate synchronously. In a preferred implementation, the bottom plate 12 is provided with a driving motor, and the driving motor can drive the transmission guide rail 2311331 to rotate. The driving motor is used to drive the transmission guide rail 2311331 to rotate.

[0063] In addition, the clamping device 13 further includes a synchronous centering assembly 134. The synchronous centering assembly 134 includes a pair of synchronous racks 1341 and a centering gear 1342 located between the two synchronous racks 1341. The centering gear 1342 meshes with the two synchronous racks 1341. The centering gear 1342 is rotatably mounted on the bottom plate 12. The synchronous racks 1341 correspond to the clamping plates 131 one by one, and the synchronous racks 1341 are fixedly connected to the clamping plates 131. The clamping plates 131 can drive the synchronous racks 1341 to slide.

[0064] When specifically installing the paper tube 3, pushing two taper heads 1321 or one of the taper heads 1321 causes the clamping plate 131 corresponding to the taper head 1321 to drive the centering gear 1342 to rotate through the synchronous rack 1341. The centering gear 1342 drives the other synchronous rack 1341 to move in the opposite direction, thereby driving the corresponding clamping plate 131 to move. Finally, the taper heads 1321 on the two clamping plates 131 can move synchronously towards each other (i.e., move in opposite directions simultaneously). Therefore, the two taper heads 1321 can clamp paper tubes 3 of different widths. The inner wall of the through hole in the paper tube 3 can slide along the guide surface 1324 to the mounting surface 1325. At this time, the inner wall of the through hole abuts against the second end of the claw 1322. At this time, the second end of the claw 1322 can abut against the inner wall of the through hole on the paper tube 3, preventing relative sliding between the paper tube 3 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 1341 and arranging a centering gear 1342 meshing therebetween, it is ensured that the two synchronous racks 1341 can move synchronously in opposite directions simultaneously, thereby ensuring that the two taper heads 1321 can clamp paper tubes 3 of different widths. In addition, a claw 1322 is provided on the taper head 1321 to abut against the inner wall of the paper tube 3, increasing the friction between the taper head 1321 and the paper tube 3 and preventing relative sliding between the paper tube 3 and the taper head 1321, ensuring normal printing.

[0065] Finally, the clamping device 13 further includes a locking assembly 135. The locking assembly 135 includes a locking rack 1351, a stop swing arm 1352, a second elastic member 1353, and a stop block 1354. The locking rack 1351 is fixedly arranged on the bottom plate 12. The stop swing arm 1352 is rotatably installed on the clamping plate 131, and a stop tooth that can mesh with the locking rack 1351 is provided on the stop swing arm 1352. One end of the second elastic member 1353 is fixedly connected to the stop swing arm 1352, and the other end of the second elastic member 1353 is fixedly installed on the clamping plate 131. The stop block 1354 is slidably installed on the clamping plate 131, and when the stop block 1354 slides on the clamping plate 131, the stop block 1354 can push the stop tooth on the stop swing arm 1352 to mesh with the locking rack 1351.

[0066] When the cone head 1321 on the clamping plate 131 does not clamp the paper tube 3, the second elastic member 1353 can pull the stop swing arm 1352 to the first working position. At this time, the stop teeth on the stop swing arm 1352 do not engage with the locking rack 1351, and the clamping plate 131 can slide normally on the bottom plate 12. When the cone head 1321 on the clamping plate 131 clamps the paper tube 3, the stop block 1354 is pushed to make the stop swing arm 1352 swing, so that the stop swing arm 1352 is in the second working position. At this time, the stop teeth engage with the locking rack 1351. Since the locking rack 1351 is fixed, the locking plate is also fixed at this time, ensuring that when the printer is working, the cone heads 1321 on the two clamping plates 131 will not slide relative to the bottom plate 12, ensuring the long-term clamping of the paper tube 3.

[0067] The locking assembly 135 further includes a locking handle 1355 and a limit card plate 1356. The locking handle 1355 is rotatably installed on the clamping plate 131. One end of the locking handle 1355 is provided with an oblong hole 1357. A connecting rod is arranged in the oblong hole 1357, and the connecting rod is fixedly connected to the stop block 1354. Rotating the other end of the locking handle 1355 can drive the stop block 1354 to slide on the clamping plate 131. The limit card plate 1356 is fixedly arranged on the clamping plate 131. The limit card plate 1356 is provided with a limit protrusion 1360. A locking groove 1359 is arranged on the side of the locking handle 1355 facing the limit card plate 1356. When the stop teeth on the stop swing arm 1352 driven by the locking handle 1355 through the stop block 1354 engage with the locking rack 1351, the limit protrusion 1360 can be clamped in the locking groove 1359. When the user rotates the locking handle 1355 to drive the stop block 1354 to move, and then pushes the stop swing arm 1352 to the second working position, the limit protrusion 1360 on the limit card plate 1356 is located in the locking groove 1359. At this time, the second elastic member 1353 is in a stretched state, and the stop swing arm 1352 has a tendency to move to the first working position. Therefore, both the stop block 1354 and the locking handle 1355 have a tendency to move in the direction opposite to the rotation direction of the user. At this time, the limit protrusion 1360 can be clamped in the locking groove 1359 to avoid the above movement, that is, the elastic force of the limit card plate 1356 is used to offset the elastic force of the second elastic member 1353, ensuring that the stop teeth on the stop swing arm 1352 always engage with the locking rack 1351.

[0068] It should be understood that the above description of the specific embodiments of the present invention is only for explaining the technical route and features 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. An inkjet blueprint printer, characterized in that, The inkjet blueprint printer includes: a rotating paper bin (1) and a printing device (2); The rotating paper bin (1) includes: paired turntables (11), a bottom plate (12), a clamping device (13), and a paper outlet device (14); the two turntables (11) are parallel to each other, the bottom plate (12) is arranged between the two turntables (11), and both opposite sides of the bottom plate (12) are fixedly connected to the bottom plate (12), and the bottom plate (12) is arranged in a circular array on the turntable (11); the clamping device (13) and the paper outlet device (14) are both arranged on the bottom plate (12), and the clamping device (13) is used for installing a paper tube (3); the paper outlet device (14) includes a paper outlet shaft (141) and a paper outlet roller (142) arranged on the paper outlet shaft (141), the paper outlet shaft (141) is rotatably installed on the bottom plate (12), the paper outlet roller (142) can drive the paper on the paper tube (3) to move, the paper tube (3) is located on one side of the paper outlet roller (142), and the other side of the paper outlet roller (142) can be the inlet facing the paper outlet device (14); The printing device (2) includes: a printing component and a conveying component (22); the printing component includes an inkjet head (21), and the conveying component (22) includes a conveying belt (221) and a negative pressure fan (222); negative pressure holes (223) are arranged in an array on the conveying belt (221), the negative pressure fan (222) is arranged on one side of the conveying belt (221), the inkjet head (21) is located on the other side of the conveying belt (221), and the inkjet head (21) faces the conveying belt (221), and the paper outlet roller (142) can convey the paper on the paper tube (3) to the conveying belt (221).

2. The inkjet blueprint printer according to claim 1, characterized in that, The printing device (2) further includes a bracket (23), a guide rail (231) is arranged on the bracket (23), the length direction of the guide rail (231) is perpendicular to the movement direction of the paper, an inkjet rack (232) is slidably arranged on the bracket (23), and a plurality of the inkjet heads (21) are arranged on the inkjet rack (232).

3. The inkjet blueprint printer according to claim 2, characterized in that, The conveying component (22) further includes an inlet conveying wheel (224), an outlet conveying wheel (225), and two conveying rollers (226) that are all rotatably arranged on the bracket (23); The conveying belt (221) is wound around the two conveying rollers (226), the inlet conveying wheel (224) and the outlet conveying wheel (225) correspond to the conveying rollers (226) one by one, and both the inlet conveying wheel (224) and the outlet conveying wheel (225) are located on one side of the conveying rollers (226), and the paper can enter the conveying belt (221) from the inlet conveying wheel (224).

4. The inkjet blueprint printer according to any one of claims 1-3, characterized in that, The rotating paper bin (1) further includes a rotating frame (15); The turntable (11) is rotatably mounted on the rotary frame (15). An electromagnetic clutch (151) and a driving wheel (152) are provided on one of the two turntables (11). The driving wheel (152) is rotatably connected to the turntable (11). The electromagnetic clutch (151) is used to connect the driving wheel (152) and the paper output shaft (141), and the electromagnetic clutch (151) can control the engagement and disengagement between the driving wheel (152) and the paper output shaft (141).

5. The inkjet blueprint printer according to claim 4, wherein, A rotary motor (153) and a rotary gear (154) are provided on the rotary frame (15). The rotary motor (153) is fixedly mounted on the rotary frame (15), and the rotary motor (153) can drive the rotary gear (154) to rotate. Rotating teeth meshing with the rotary gear (154) are provided at the edge of the turntable (11).

6. The inkjet blueprint printer according to any one of claims 1-3, characterized in that, The clamping device (13) includes a pair of clamping plates (131) and a tapered head assembly (132). The clamping plates (131) are slidably arranged on the bottom plate (12). The tapered head assemblies (132) are rotatably arranged on the first side surfaces of the clamping plates (131). The tapered head assemblies (132) on the two clamping plates (131) are arranged oppositely, and the two tapered head assemblies (132) are used to mount the paper tube (3). The tapered head assembly (132) includes: a tapered head (1321), a claw (1322), and a first elastic member (1323). One end face of the tapered head (1321) is rotatably mounted on the clamping plate (131). The side surface of the tapered head (1321) includes a guiding surface (1324) and a mounting surface (1325) connected to each other. The guiding surface (1324) has a certain taper. A plurality of clamping spaces (1326) are recessed inward on the mounting surface (1325) of the tapered head (1321). The claw (1322) and the first elastic member (1323) are arranged in the clamping space (1326). The first end of the claw (1322) is hinged in the clamping space (1326). One end of the first elastic member (1323) abuts against the second end of the claw (1322), and the other end of the first elastic member (1323) abuts against the tapered head assembly (132). The second end of the claw (1322) can extend out of the clamping space (1326) under the action of the elastic force of the first elastic member (1323).

7. The inkjet blueprint printer according to claim 6, wherein, The clamping device (13) further includes a driving assembly (133). The driving assembly (133) includes: a transmission guide rail (231)(1331), a synchronous pulley (1332), a synchronous belt (1333), and a power wheel (1334). The transmission guide rail (231)(1331) is rotatably installed on the base plate (12). Synchronous wheels (1332) and power wheels (1334) are rotatably arranged on the second side surfaces of the clamping plates (131). The synchronous wheels (1332) and the power wheels (1334) are connected by a synchronous belt (1333). The power wheel (1334) is fixedly connected to the conical head (1321), and the power wheel (1334) can drive the conical head (1321) to rotate; The synchronous wheel (1332) is sleeved on the transmission guide rail (231)(1331). The synchronous wheel (1332) can slide along the transmission guide rail (231)(1331), and the transmission guide rail (231)(1331) can drive the synchronous wheel (1332) to rotate.

8. The inkjet blueprint printer according to claim 6, wherein The clamping device (13) further includes a synchronous centering assembly (134); The synchronous centering assembly (134) includes a pair of synchronous racks (1341) and a centering gear (1342) located between the two synchronous racks (1341). The centering gear (1342) meshes with the two synchronous racks (1341). The centering gear (1342) is rotatably installed on the base plate (12). The synchronous racks (1341) correspond to the clamping plates (131) one by one, and the synchronous racks (1341) are fixedly connected to the clamping plates (131). The clamping plates (131) can drive the synchronous racks (1341) to slide.

9. The inkjet blueprint printer according to claim 6, wherein, The clamping device (13) further includes a locking assembly (135). The locking assembly (135) includes a locking rack (1351), a stop swing arm (1352), a second elastic member (1353), and a stop block (1354); The locking rack (1351) is fixedly arranged on the base plate (12). The stop swing arm (1352) is rotatably installed on the clamping plate (131), and a stop tooth capable of meshing with the locking rack (1351) is arranged on the stop swing arm (1352); One end of the second elastic member (1353) is fixedly connected to the stop swing arm (1352), and the other end of the second elastic member (1353) is fixedly installed on the clamping plate (131); The stop block (1354) is slidably installed on the clamping plate (131). When the stop block (1354) slides on the clamping plate (131), the stop block (1354) can push the stop tooth on the stop swing arm (1352) to mesh with the locking rack (1351).

10. The inkjet blueprint printer according to claim 9, characterized in that, The locking assembly (135) further includes a locking handle (1355) and a limit clamping plate (1356); The locking handle (1355) is rotatably mounted on the clamping plate (131). One end of the locking handle (1355) is provided with an oblong hole (1357), and a connecting rod is arranged in the oblong hole (1357). The connecting rod is fixedly connected to the stop block (1354). Rotating the other end of the locking handle (1355) can drive the stop block (1354) to slide on the clamping plate (131). The limit clamping plate (1356) is fixedly arranged on the clamping plate (131). The limit clamping plate (1356) is provided with a limit protrusion (1360). A locking groove (1359) is arranged on one side of the locking handle (1355) facing the limit clamping plate (1356). When the locking handle (1355) drives the locking tooth on the stop swing arm (1352) to engage with the locking rack (1351) through the stop block (1354), the limit protrusion (1360) can be clamped in the locking groove (1359).

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