A roll paper printer

Abstract

The present invention discloses a roll paper printer, which includes a consumables reel, a driving mechanism, a braking mechanism and a printing mechanism. The consumables reel is used to carry a paper roll, the driving mechanism is used to output printing paper, the braking mechanism is used to brake the consumables reel to stop the consumables reel from rotating, and the printing mechanism is one or more, and the printing mechanism is located above or below the consumables reel. The roll paper printer can effectively reduce the running resistance during the printing stage, and avoid the consumables overshoot phenomenon when stopping printing, increase the quality of the paper roll that the consumables reel can carry, thereby expanding the consumables loading capacity of the roll paper printer and extending the maintenance cycle of the roll paper printer. In addition, the front and rear dimensions of the roll paper printer are reduced, and the aesthetic appearance of the roll paper printer and the flexibility of the structural design are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of printing devices, and particularly to a roll paper printer. Background Art

[0002] At present, in places such as office buildings, hospitals, and schools, self-service printing is increasingly widely used, and most of the self-service printers on the market currently use roll paper printers. The capacities of existing self-service roll paper printers are all relatively small. When the paper roll is small, the running resistance of the paper roll is small, and the phenomenon of paper roll overshoot when the printer stops printing can be better avoided, thereby ensuring the working reliability of the roll paper printer. However, the small paper roll leads to the need to frequently replace the paper roll for existing roll paper printers, which increases the maintenance cost of the roll paper printer and makes the existing self-service roll paper printers not suitable for public places with large printing requirements. Summary of the Invention

[0003] The purpose of the present invention is to provide a roll paper printer that can better reduce the running resistance of the paper roll and avoid the phenomenon of paper roll overshoot, and can load more consumables at one time, thereby reducing the maintenance cost of the roll paper printer.

[0004] To achieve the above technical effects, the technical solution of the roll paper printer of the present invention is as follows:

[0005] The present invention discloses a roll paper printer, including: a consumable reel for carrying a paper roll; a driving mechanism for driving and outputting printing paper from the paper roll; a printing mechanism located above or below the consumable reel; and a braking mechanism for braking the consumable reel to stop the rotation of the consumable reel.

[0006] In some embodiments, the roll paper printer further includes a bracket, and a bearing is sleeved on one end of the consumable reel, and the bearing is fitted on the side wall of the bracket.

[0007] In some embodiments, the braking mechanism includes: a buffer module rotatably provided on the bracket; a braking module connected to the buffer module; and a braking disc provided on the consumable reel, and the braking disc can cooperate with the braking module, wherein: the braking module is configured to be driven to disengage from the braking disc to release the consumable reel when the printing paper pulls the buffer module to rotate.

[0008] In some alternative embodiments, the buffer module includes: a first swing rod, one end of the first swing rod is rotatably connected to the inner side wall of the bracket; a guide roller, the guide roller is sleeved on the other end of the first swing rod, and the guide roller is used to guide the printing paper output when the consumable reel rotates; a second swing rod, one end of the second swing rod is rotatably connected to the inner side wall of the bracket, and the other end can be driven by the first swing rod, and the braking module is arranged on the second swing rod.

[0009] In some alternative embodiments, a first top block is arranged on the first swing rod, and a second top block cooperating with the first top block is arranged on the second swing rod.

[0010] In some alternative embodiments, the buffer module further includes: a first elastic member, one end of the first elastic member is connected to the bracket, and the other end is connected to the first swing rod, and the first elastic member is used to reset the first swing rod when the roll paper printer stops printing; a second elastic member, one end of the second elastic member is connected to the bracket, and the other end is connected to the second swing rod, and the second elastic member is used to reset the second swing rod when the roll paper printer stops printing.

[0011] In some alternative embodiments, the braking module includes: a brake block, the brake block is rotatably arranged on the second swing rod, a brake pad, the brake pad is fitted on the brake block, and the brake pad has an arc surface matching the circumferential surface of the brake disc; a third elastic member, one end of the third elastic member is connected to the brake block, and the other end abuts against the second swing rod, and the third elastic member is used to reset the brake block when the roll paper printer stops printing.

[0012] In some alternative embodiments, the braking mechanism includes: an electromagnetic braking member, the electromagnetic braking member is arranged on the consumable reel, and the electromagnetic braking member is used to brake or release the consumable reel; a swing rod, one end of the swing rod is rotatably connected to the side wall of the bracket, a guiding portion is arranged on one end of the swing rod, and the guiding portion is used to guide the printing paper; a first detecting member, the first detecting member is used to detect the position of the swing rod; the electromagnetic braking member is configured to release the consumable reel when the first detecting member detects that the swing rod rotates.

[0013] In some alternative embodiments, the braking mechanism includes: a driving motor, the driving motor is in transmission cooperation with the consumable reel, and the driving motor can drive the consumable reel to rotate; a second detecting member, the second detecting member is used to detect the outer circumference position of the paper roll; the driving motor is configured to adjust the rotation speed of the consumable reel according to the detected outer circumference position of the paper roll by the second detecting member to adapt to the printing speed of the roll paper printer.

[0014] In some embodiments, there are multiple printing mechanisms, and the multiple printing mechanisms are arranged in sequence along the conveying direction of the printing paper. At least some of the printing mechanisms have a printing position and a sleep position, and include a printing module and a lifting module. The lifting module cooperates with the printing module, and the lifting module is used to lift the printing module to move it from the printing position to the sleep position.

[0015] In some alternative embodiments, the lifting module includes a lifting cam, and the lifting cam is used to drive the printing module to move between the printing position and the sleep position.

[0016] Due to the provision of a braking mechanism for buffering and braking the consumable reel, the roll paper printer of the present invention can effectively reduce the running resistance during printing, avoid the overshoot phenomenon of the consumables when printing stops, increase the mass of the paper roll that the consumable reel can carry, thereby expanding the consumable loading capacity of the roll paper printer and extending the maintenance cycle of the paper roll printer. In addition, the printing mechanism is located above or below the consumable reel, and the position can be adjusted relatively flexibly, reducing the front and rear dimensional thickness of the roll paper printer and improving the aesthetic degree of the appearance of the roll paper printer and the flexibility of the structural design.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. Brief Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of the roll paper printer according to Embodiment 1 of the present invention.

[0019] Figure 2 is a partial structural schematic diagram of the braking module of the roll paper printer according to Embodiment 1 of the present invention when the braking disc is locked.

[0020] Figure 3 is a partial structural schematic diagram of the braking module of the roll paper printer according to Embodiment 1 of the present invention when the braking disc is disengaged.

[0021] Figure 4 is a schematic structural diagram of the printing mechanism of the roll paper printer according to Embodiment 1 of the present invention.

[0022] Figure 5 is a schematic diagram of the cooperative structure of the printing module and the lifting module of the roll paper printer according to Embodiment 1 of the present invention.

[0023] Figure 6 is a partial structural schematic diagram of the roll paper printer according to Embodiment 2 of the present invention.

[0024] Figure 7 is a partial structural schematic diagram of the roll paper printer according to Embodiment 3 of the present invention.

[0025] Figure 8 It is a partial structural schematic diagram of the roll paper printer according to the fourth embodiment of the present invention.

[0026] Reference numerals:

[0027] 1. Consumable reel;

[0028] 2. Printing mechanism; 21. Printing module; 211. Detection component; 212. Rubber roller component; 213. Print head; 214. Ribbon supply shaft; 215. Ribbon recovery shaft; 22. Lifting module; 221. Lifting cam;

[0029] 3. Braking mechanism; 31. Buffer module; 311. First swing rod; 3111. First top block; 3112. First baffle; 312. Guide roller; 313. Second swing rod; 3131. Second top block; 314. First elastic member; 315. Second elastic member; 32. Braking module; 321. Braking block; 322. Brake pad; 323. Third elastic member; 33. Brake disc; 34. Grating component; 35. Braking motor; 351. Braking cam; 36. Electromagnetic braking member; 37. Swing rod; 371. Guide portion; 372. Second baffle; 38. First detection member; 39. Driving motor; 310. Second detection member;

[0030] 4. Bracket;

[0031] 5. Cutting mechanism;

[0032] 100. Paper roll; 200. Printing paper. Detailed implementation manners

[0033] To make the technical problems solved by the present invention, the technical solutions adopted and the achieved technical effects clearer, the technical solutions of the present invention will be further described below with reference to the accompanying drawings and through specific implementation manners.

[0034] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0035] In addition, features defined with "first" and "second" may explicitly or implicitly include one or more of such features, which are used to distinguish and describe features, without order or importance. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "mounted", "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; 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. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] The following refers to Figures 1 - 5 to describe the specific structure of the roll paper printer according to an embodiment of the present invention.

[0038] As Figure 1 shown, the roll paper printer according to an embodiment of the present invention includes a consumable reel 1, a driving mechanism, a printing mechanism 2 and a braking mechanism 3. The consumable reel 1 is used to carry a paper roll 100, the driving mechanism is used to drive and output printing paper 200 from the paper roll 100, the braking mechanism 3 is used to brake the consumable reel 1 to stop the rotation of the consumable reel 1, and the printing mechanism 2 is located above or below the consumable reel 1.

[0039] It can be understood that the added braking mechanism 3 of the roll paper printer in this embodiment can brake the entire consumable reel 1 when the roll paper printer stops printing. That is to say, even if a paper roll 100 with a large loading mass is loaded on the consumable reel 1, due to the existence of the braking mechanism 3 after printing, the paper roll 100 will not overshoot due to its own inertia, thus ensuring the reliability of the entire roll paper printer. In addition, the existence of the braking mechanism 3 can also alleviate the inertia brought by the self-gravity of the paper roll 100 to a certain extent at the beginning stage of printing, thereby reducing the running resistance of the roll paper printer when starting printing.

[0040] In addition, since the printing mechanism 2 is located above or below the consumable reel 1 and the two form a separated structure, it can not only reduce the front and back size thickness of the roll paper printer, but also improve the aesthetic degree of the appearance of the roll paper printer and the flexibility of the structural design.

[0041] The roll paper printer of this embodiment is provided with a buffer and a braking mechanism 3 capable of braking the consumable reel 1. During printing, it can effectively reduce the running resistance, avoid the overshoot phenomenon of the consumables when printing stops, reduce the overshoot intensity of the paper roll 100 due to its own inertia, increase the mass of the paper roll 100 that the consumable reel 1 can carry, thereby increasing the consumable loading capacity of the roll paper printer and extending the maintenance cycle of the paper roll 100 printer. In addition, the printing mechanism 2 is located above or below the consumable reel 1, reducing the front-to-back dimension thickness of the roll paper printer and improving the aesthetic degree of the appearance of the roll paper printer and the flexibility of the structural design.

[0042] Preferably, the roll paper printer of this embodiment can carry a paper roll 100 with an outer diameter of 300 mm and can print 2000 sheets of A4 paper. Compared with the need to replenish the paper roll 100 after printing a few sheets in the current prior art, the roll paper printer of this embodiment greatly extends the maintenance cycle and facilitates user use.

[0043] In some embodiments, as Figure 1 shown, the roll paper printer further includes a bracket 4. One end of the consumable reel 1 is sleeved with a bearing, and the bearing is fitted on the side wall of the bracket 4. It can be understood that a bearing is provided at one end of the consumable reel 1, and the consumable reel 1 is rotatably fitted on the side wall of the bracket 4 through the bearing. The bearing can reduce the friction between the consumable reel 1 and the bracket 4, thereby reducing the resistance received when the consumable reel 1 rotates during the printing process. When the power of the structure driving the rotation of the consumable reel 1 remains unchanged, the consumable reel 1 can carry a paper roll 100 with a larger mass, thereby improving the consumable loading capacity of the roll paper printer and further extending the maintenance cycle of the roll paper printer.

[0044] In some embodiments, as Figures 1 - 3 shown, the braking mechanism 3 includes a buffer module 31, a braking module 32 and a brake disc 33. The buffer module 31 is rotatably provided on the bracket 4. The braking module 32 is connected to the buffer module 31. The brake disc 33 is provided on the consumable reel 1, and the brake disc 33 can cooperate with the braking module 32. Among them, the braking module 32 is configured to be driven to disengage from the brake disc 33 when the printing paper 200 pulls the buffer module 31 to rotate.

[0045] It can be understood that during the actual printing process, when the roll paper printer starts to output the printing paper 200, the printing paper 200 can drive the buffer module 31 to move so as to drive the braking module 32 away from the brake disc 33, so that the braking module 32 is no longer locked on the brake disc 33, thereby enabling the consumable reel 1 to be completely released, ensuring that the printing mechanism 2 can print normally. Due to the good buffering effect and prevention of overshoot of the paper roll 100 in the above process, it well reduces the impact of the consumables on the motor of the drive mechanism during the start-stop stage, and during normal operation, since the consumable reel 1 and the bracket 4 are matched through rolling bearings, it greatly reduces the running resistance of the paper roll 100, thereby reducing the power demand for the drive mechanism. In this way, the roll paper printer of this embodiment can load a paper roll 100 with a larger mass to extend the maintenance cycle of the roll paper printer.

[0046] In some alternative embodiments, such as Figures 2 - 3 shown, the buffer module 31 includes a first swing rod 311, a guide roller 312 and a second swing rod 313. One end of the first swing rod 311 is rotatably connected to the inner side wall of the bracket 4, the guide roller 312 is sleeved on the other end of the first swing rod 311, the guide roller 312 is used for guiding the printing paper 200 output when the consumable reel 1 rotates, one end of the second swing rod 313 is rotatably connected to the inner side wall of the bracket 4, and the other end can be driven by the first swing rod 311. The braking module 32 is arranged on the second swing rod 313.

[0047] It can be understood that during actual use, at the beginning of printing, the driving mechanism of the roll paper printer outputs the printing paper 200. During the transmission process, the printing paper 200 will drive the guiding roller 312 to move upward, causing the first swing rod 311 to rotate clockwise, thereby driving the second swing rod 313 to rotate clockwise. That is to say, during the process of the printing paper 200 driving the guiding roller 312 to move upward, the second swing rod 313 can rotate in a direction away from the consumable reel 1. Since the braking module 32 is provided on the second swing rod 313, when the second swing rod 313 rotates in a direction away from the consumable reel 1, the braking module 32 can gradually move away from the brake disc 33. When the braking module 32 disengages from the brake disc 33, the consumable reel 1 is released, and at this time, the roll paper printer can continuously output the printing paper 200. When printing ends, the driving mechanism of the roll paper printer stops outputting the printing paper 200. At this time, the paper roll 100 will continue to rotate under its own inertia, resulting in the phenomenon that the printing paper 200 continues to be released. That is to say, the printing paper 200 is no longer in a tensioned state. At this time, the guiding roller 312 moves downward under its own gravity, causing the first swing rod 311 to rotate counterclockwise, thereby causing the second swing rod 313 to rotate counterclockwise. That is to say, during the process of the guiding roller 312 moving downward, the second swing rod 313 can rotate in a direction close to the consumable reel 1. Since the braking module 32 is provided on the second swing rod 313, when the second swing rod 313 rotates in a direction close to the consumable reel 1, the braking module 32 can gradually approach the brake disc 33. When the braking module 32 abuts against the brake disc 33, the consumable reel 1 is locked. At this time, although the paper roll 100 on the consumable reel 1 has a large mass, the braking effect of the braking module 32 inhibits the overshoot phenomenon of the consumable reel 1, ensuring the working reliability of the roll paper printer.

[0048] Therefore, by adopting the transmission structure of the guiding roller 312, the first swing rod 311, and the second swing rod 313, it can better ensure that when the driving mechanism drives the printing paper 200 to be output, the braking module 32 moves away from the brake disc 33, and it can also ensure that when the driving mechanism stops moving, the braking module 32 approaches the brake disc 33, thereby inhibiting the occurrence of the overshoot phenomenon of the consumable reel 1.

[0049] In some alternative embodiments, as Figure 2 shown, a first top block 3111 is provided on the first swing rod 311, and a second top block 3131 that cooperates with the first top block 3111 is provided on the second swing rod 313. It can be understood that the cooperation between the first top block 3111 and the second top block 3131 can ensure the pushing effect of the first swing rod 311 on the second swing rod 313, thereby ensuring that the braking module 32 can smoothly separate from or fit onto the brake disc 33.

[0050] In some alternative embodiments, as Figures 2 - 3As shown, the buffer module 31 further includes a first elastic member 314 and a second elastic member 315. One end of the first elastic member 314 is connected to the bracket 4, and the other end is connected to the first swing rod 311. The first elastic member 314 is used to reset the first swing rod 311 when the roll paper printer stops printing. One end of the second elastic member 315 is connected to the bracket 4, and the other end is connected to the second swing rod 313. The second elastic member 315 is used to reset the second swing rod 313 when the roll paper printer stops printing.

[0051] It can be understood that, according to the foregoing, when printing stops, the guide roller 312 can only return to its original position by its own gravity. However, since the printing paper 200 is engaged with the guide roller 312 at this time, there may be a phenomenon that the guide roller 312 cannot be fully reset, resulting in the braking module 32 not being able to lock the brake disc 33. In this embodiment, the buffer module 31 further includes a first elastic member 314 and a second elastic member 315. In this way, when printing stops, the first swing rod 311 can be reset under the action of the first elastic member 314. When the first swing rod 311 and the second swing rod 313 are disengaged, the second swing rod 313 can also be reset under the action of the second elastic member 315. Thus, it is ensured that after printing stops, both the first swing rod 311 and the second swing rod 313 can be smoothly reset, thereby ensuring that the braking module 32 abuts against the brake disc 33 to brake the consumable reel 1 after printing stops.

[0052] In some alternative embodiments, as Figures 2 - 3 shown, the braking module 32 includes a brake block 321, a brake pad 322 and a third elastic member 323. The brake block 321 is rotatably arranged on the second swing rod 313. The brake pad 322 is engaged with the brake block 321. The brake pad 322 has an arc surface that matches the circumferential surface of the brake disc 33. One end of the third elastic member 323 is connected to the brake block 321, and the other end abuts against the second swing rod 313. The third elastic member 323 is used to reset the brake block 321 when the roll paper printer stops printing.

[0053] It can be understood that the rotatability of the brake block 321 relative to the second swing rod 313 ensures that the brake pad 322 can tightly fit on the brake disc 33, ensuring the locking effect of the brake pad 322 on the brake disc 33, thereby ensuring the braking reliability of the braking module 32. The brake pad 322 has an arc surface that matches the circumferential surface of the brake disc 33, which can further enhance the locking effect of the brake pad 322 on the brake disc 33 when the brake pad 322 abuts against the brake disc 33, thereby further enhancing the braking reliability of the braking module 32.

[0054] In addition, the presence of the third elastic member 323 can ensure that when the brake pad 322 is attached to the brake disc 33, the brake pad 322 can exert a greater force on the brake disc 33, thereby ensuring the braking effect of the brake module 32, and can ensure that when the second swing arm 313 moves in a direction away from the consumable reel 1, the brake block 321 can be separated from the brake disc 33 more quickly, thereby ensuring the normal printing of the roll paper printer.

[0055] It should be supplemented that, in other embodiments of the present invention, a portion of the second swing arm 313 can be directly formed into the brake module 32, and the second swing arm 313 can play the role of braking the brake disc 33.

[0056] In addition, it should be additionally explained that in other embodiments of the present invention, the brake mechanism 3 may include a linear drive mechanism and a brake module 32. In the actual printing process, the linear drive mechanism may directly drive the brake module 32 to stop or disengage from the brake disc 33. In other words, in this embodiment, the brake mechanism 3 may have a variety of structures, and is not limited to the aforementioned structure of the buffer module 31 cooperating with the brake module 32.

[0057] For example, in some embodiments, such as Figure 6 As shown in FIG. 1 , the first swing arm 311 and the second swing arm 313 are not matched by the first top block 3111 and the second top block 3131 for transmission. Instead, a grating assembly 34 is arranged on the bracket 4, and a first baffle 3112 matched with the grating assembly 34 is arranged on the first swing arm 311. The grating assembly 34 can detect the position of the first swing arm 311 through the first baffle 3112. The second swing arm 313 is driven by a brake motor 35. A brake cam 351 is arranged on the output shaft of the brake motor 35. When the brake motor 35 drives the brake cam 351 to rotate, the brake cam 351 can drive the second swing arm 313 to move in a direction away from the consumable reel 1 so as to realize the brake module 32 releasing the consumable reel 1. When the roll paper printer stops printing, the second elastic member 315 drives the second swing arm 313 to reset, so that the brake module 32 stops on the consumable reel 1 again to brake the consumable reel 1. In actual operation, the grating assembly 34 detects the position of the first swing arm 311 and feeds back the signal to the control system of the roll paper printer, and the control system controls the brake motor 35 to rotate, so that the brake cam 351 drives the second swing arm 313 to rotate in a direction away from the consumable reel 1, thereby causing the brake module 32 to leave the brake disc 33.

[0058] For another example, such as Figure 7 ​As shown, in some embodiments, the braking mechanism 3 includes an electromagnetic brake 36, a swing rod 37, and a first detector 38. The electromagnetic brake 36 is provided on the consumable reel 1 and is used to brake or release the consumable reel 1. One end of the swing rod 37 is rotatably connected to the side wall of the bracket. A guiding portion 371 is provided at one end of the swing rod 37, and the guiding portion 371 is used to guide the printing paper 200. The first detector 38 is used to detect the position of the swing rod 37. The electromagnetic brake 36 is configured to release or brake the consumable reel 1 when the first detector 38 detects the rotation of the swing rod 37. During the actual working process, the first detector 38 can detect the position of the swing rod 37 and feedback a signal to the control system of the roll paper printer, and the control system controls the electromagnetic brake 36 to brake or loosen the consumable reel 1.

[0059] Optionally, the first detector 38 is a grating, and a second blocking piece 372 cooperating with the first detector 38 is provided on the swing rod 37. The first detector 38 can detect the position of the swing rod 37 through the second blocking piece 372.

[0060] For another example, in some embodiments, as Figure 8 shown, the braking mechanism 3 includes a driving motor 39 provided on the consumable reel 1 and a second detector 310. The driving motor 39 can drive the consumable reel 1 to rotate. The second detector 310 can detect the position of the outer circle of the paper roll 100 in real time. The driving motor 39 is configured to adjust the rotation speed of the consumable reel 1 according to the position of the outer circle of the paper roll 100 detected by the second detector 310 to adapt to the printing speed of the roll paper printer. During the actual use process, the second detector 310 can detect the position of the outermost circle of the paper roll 100 and feedback the position of the outermost circle of the paper roll 100 to the control system of the roll paper printer. The control system can calculate the rotation speed of the consumable reel 1 in combination with the printing speed of the printer, so that the consumable reel 1 releases the printing paper 200 at the same printing speed. When the roll paper printer stops printing, the control system sends a signal to the driving motor 39 to rotate it in the reverse direction, and the reverse rotation of the driving motor 39 can cancel the rotation of the paper roll 100 due to its own inertia. Thus, the purpose of braking the consumable reel 1 can also be achieved.

[0061] In some embodiments, as Figure 1 、 Figure 4 shown, there are multiple printing mechanisms 2, and the multiple printing mechanisms 2 are arranged in sequence along the conveying direction of the printing paper 200. At least some of the printing mechanisms 2 have a printing position and a sleep position, and include a printing module 21 and a lifting module 22. The lifting module 22 cooperates with the printing module 21, and the lifting module 22 is used to lift the printing module 21 so that it moves from the printing position to the sleep position.

[0062] It can be understood that since there are multiple printing mechanisms 2, and the printing mechanism 2 includes a printing module 21 and a lifting module 22, during the actual printing process, the number of printing mechanisms 2 in the printing state can be controlled according to the printing requirements, so that the roll paper printer in this embodiment can achieve single-sided single-color printing, single-sided multi-color printing, double-sided single-color printing, double-sided multi-color printing and other printing functions, expanding the application range of the roll paper printer and improving the user satisfaction of the roll paper printer.

[0063] In some embodiments, as Figure 1 , Figure 4 shown, the printing module 21 includes a detection component 211, a rubber roller component 212, a print head 213, a carbon ribbon supply shaft 214 and a carbon ribbon recovery shaft 215. The detection component 211 is used to detect the position of the printing paper 200. In the transport direction of the printing paper 200, the rubber roller component 212 is located downstream of the detection component 211. The rubber roller component 212 is used to transport the printing paper 200. In the transport direction of the printing paper 200, the print head 213 is arranged corresponding to the rubber roller component 212. The print head 213 is used for printing. The carbon ribbon supply shaft 214 is located on the print head 213. The carbon ribbon supply is used to transport the carbon ribbon towards the printing paper 200. In the transport direction of the printing paper 200, the carbon ribbon recovery shaft 215 is located downstream of the carbon ribbon supply shaft 214.

[0064] It can be understood that the detection component 211 can detect whether there is printing paper 200 in the printing channel. When the detection component 211 detects the printing paper 200 and determines that the printing paper 200 reaches a certain position, the ink on the carbon ribbon can be transferred to the printing paper 200 under the action of the heat and pressure of the print head 213. And the used carbon ribbon can be recycled and wound onto the carbon ribbon recovery shaft 215. Thus, a printing process can be completed.

[0065] It should be additionally noted here that the detection component 211 can be any one of the existing photoelectric sensors, position sensors, and contact sensors in the prior art, and the specific type of the detection component 211 is not limited herein. At the same time, the model and printing accuracy of the print head 213 can be selected according to actual needs, and the parameters of the print head 213 are not specifically limited herein.

[0066] In addition, in this embodiment, the print head 213 can be a thermal print head 213, a pin print head, an inkjet print head or other print head 213 structures. When the print head is a thermal print head, the printing module 21 does not include the carbon ribbon supply shaft 214 and the carbon ribbon recovery shaft 215.

[0067] In some alternative embodiments, the lifting module 22 includes a lifting cam 221 for driving the print head 213 to move between a printing position and a sleep position. It can be understood that when a certain printing mechanism 2 of the roll paper printer needs to print, when the detection component 211 detects that there is printing paper 200 in the channel, the print head 213 moves towards the rubber roller assembly 212 under the action of the lifting cam 221, and the print head 213 is pressed onto the rubber roller assembly 212, and the print head 213 can complete printing by heating.

[0068] In some embodiments, as Figure 1 shown, a paper outlet is provided on the bracket 4, and the roll paper printer further includes a cutting mechanism 5 provided at the paper outlet to cut the printed printing paper 200. It can be understood that the presence of the cutting mechanism 5 facilitates the removal of the printing paper 200, and the cutting mechanism 5 can cut the printing paper 200 to the required size according to actual needs, thereby improving the user satisfaction of the roll paper printer.

[0069] Embodiment 1:

[0070] Next, refer to Figures 1 - 5 to describe a roll paper printer according to a specific embodiment of the present invention.

[0071] As Figure 1 shown, the roll paper printer of this embodiment includes a bracket 4, a consumable reel 1, a driving mechanism (not shown in the figure), a braking mechanism 3, a printing mechanism 2, and a cutting mechanism 5. One end of the consumable reel 1 is sleeved with a bearing, and the consumable reel 1 is rotatably fitted on the side wall of the bracket 4 through the bearing. The consumable reel 1 is used to carry the paper roll 100, and a brake disc 33 is provided on the consumable reel 1. The driving mechanism is arranged inside the bracket 4 and is used to output the printing paper 200. The braking mechanism 3 is arranged inside the bracket 4 and is used to brake the brake disc 33 to stop the rotation of the consumable reel 1. There are two printing mechanisms 2, and the printing mechanisms 2 are located on the bracket 4 and above the consumable reel 1. The cutting mechanism 5 is provided at the paper outlet to cut the printed printing paper 200.

[0072] As Figures 1 - 3As shown, the braking mechanism 3 includes a buffer module 31 and a braking module 32. The buffer module 31 is disposed within the bracket 4. The buffer module 31 is capable of cooperating with the paper roll 100. The braking module 32 is connected to the buffer module 31. The braking module 32 can be driven by the buffer module 31 to abut against the brake disc 33. The buffer module 31 includes a first swing rod 311, a guide roller 312, a second swing rod 313, a first elastic member 314, and a second elastic member 315. One end of the first swing rod 311 is rotatably connected to the inner side wall of the bracket 4. The guide roller 312 is sleeved on the other end of the first swing rod 311. The guide roller 312 is used to guide the printing paper 200 output when the consumable material reel 1 rotates. One end of the second swing rod 313 is rotatably connected to the inner side wall of the bracket 4, and the other end is capable of cooperating with the first swing rod 311. The braking module 32 is disposed on the second swing rod 313. A first top block 3111 is provided on one swing rod, and a second top block 3131 that cooperates with the first top block 3111 is provided on the second swing rod 313. One end of the first elastic member 314 is connected to the bracket 4, and the other end is connected to the first swing rod 311. The first elastic member 314 is used to reset the first swing rod 311 when the roll paper printer stops printing. One end of the second elastic member 315 is connected to the bracket 4, and the other end is connected to the second swing rod 313. The second elastic member 315 is used to reset the second swing rod 313 when the roll paper printer stops printing. The braking module 32 includes a brake block 321, a brake pad 322, and a third elastic member 323. The brake block 321 is rotatably disposed on the second swing rod 313. The brake pad 322 is fitted on the brake block 321. The brake pad 322 can abut against the brake disc 33 to brake the brake disc 33. One end of the third elastic member 323 is connected to the brake block 321, and the other end abuts against the second swing rod 313.

[0073] As Figure 1 , Figure 4As shown in the figure, there are two printing mechanisms 2, which are arranged in sequence along the conveying direction of the printing paper 200. One printing mechanism 2 has a printing position and a sleep position, and includes a printing module 21 and a lifting module 22. The lifting module 22 cooperates with the printing module 21, and the lifting module 22 is used to lift the printing module 21 to move it from the printing position to the sleep position. The other printing mechanism 2 only includes the printing module 21. The printing module 21 includes a detection component 211, a rubber roller component 212, a print head 213, a carbon ribbon supply shaft 214, and a carbon ribbon recovery shaft 215. The detection component 211 is used to detect the position of the printing paper 200. In the conveying direction of the printing paper 200, the rubber roller component 212 is located downstream of the detection component 211, and the rubber roller component 212 is used to convey the printing paper 200. In the conveying direction of the printing paper 200, the print head 213 is arranged corresponding to the rubber roller component 212, and the print head 213 is used for printing. The carbon ribbon supply shaft 214 is located upstream of the print head 213, and the carbon ribbon supply is used to convey the carbon ribbon towards the printing paper 200. In the conveying direction of the printing paper 200, the carbon ribbon recovery shaft 215 is located downstream of the carbon ribbon supply shaft 214. The lifting module 22 includes a lifting cam 221, and the lifting cam 221 is rotatably arranged on the bracket 4. The lifting cam 221 is used to drive the print head 213 to move between the printing position and the sleep position.

[0074] The working process of the roll paper printer in this embodiment is as follows:

[0075] When printing starts, the driving mechanism drives the printing paper 200 to run forward, dragging the guiding roller 312 to deflect upward until the first top block 3111 on the first swing rod 311 touches the second top block 3131 on the second swing rod 313, the first swing rod 311 can drive the second swing rod 313 to rotate clockwise, and then the brake pad 322 on the brake block 321 leaves the brake disc 33 (as Figure 3 shown), and after the consumable reel 1 loses the braking friction force, it can rotate and output the printing paper 200 in size.

[0076] Printing process: When the roll paper printer needs to print on one side, the detection group of the printing mechanism 2 located downstream detects that there is printing paper 200 in the channel. The print head 213 of the printing mechanism 2 located upstream leaves the rubber roller component 212 under the action of the lifting cam 221. The rubber roller component 212 located downstream rotates forward, driving the printing paper 200 to move forward, and the print head 213 heats up to complete printing. When reverse printing is required, the lifting cam 221 rotates to reset the print head 213 located upstream and press it onto the corresponding rubber roller component 212, and the print head 213 can heat up to complete printing.

[0077] Printing ends: When the printing mechanism 2 stops printing, the driving mechanism stops moving. Under the action of the first elastic member 314, the first swing rod 311 drives the guiding roller 312 to move downward for a certain distance. When the first top block 3111 and the second top block 3131 are disengaged, the second swing rod 313 rotates counterclockwise under the action of the second elastic member 315, driving the brake pad 322 to press tightly against the brake disc 33, preventing the direct rotation and avoiding overshoot of the paper roll 100.

[0078] Embodiment 2:

[0079] As Figure 6 shown, the upper half of the roll paper printer in this embodiment is the same as that in Embodiment 1. The difference is that there is no direct cooperation relationship between the first swing rod 311 and the second swing rod 313 of the braking mechanism 3 of the roll paper printer in this embodiment. Specifically, the braking mechanism 3 of this embodiment further includes a grating assembly 34 and a braking motor 35. A first blocking piece 3112 cooperating with the grating assembly 34 is provided on the first swing rod 311. The grating assembly 34 can detect the position of the first swing rod 311 through the first blocking piece 3112. A braking cam 351 is provided on the output shaft of the braking motor 35. When the braking motor 35 drives the braking cam 351 to rotate, the braking cam 351 can drive the second swing rod 313 to move away from the consumable reel 1 to release the consumable reel 1 by the braking module 32.

[0080] Embodiment 3:

[0081] As Figure 7 shown, the upper half of the roll paper printer in this embodiment is the same as that in Embodiment 1. The difference is that the braking mechanism 3 of this embodiment includes a swing rod 37, a first detection member 38, and an electromagnetic braking member 36. One end of the swing rod 37 is rotatably connected to the inner side wall of the bracket 4, and a guiding portion 371 is provided at the other end for guiding the printing paper 200 output when the consumable reel 1 rotates. A second blocking piece 372 cooperating with the first detection member 38 is provided on the swing rod 37. The first detection member 38 can detect the position of the swing rod 37 through the second blocking piece 372. The electromagnetic braking member 36 is provided on the consumable reel 1 to loosen or release the consumable reel 1.

[0082] Embodiment 4:

[0083] As Figure 8 shown, the upper half of the roll paper printer in this embodiment is the same as that in Embodiment 1. The difference is that the braking mechanism 3 of this embodiment includes a driving motor 39 for driving the consumable reel 1 to rotate, a second detection member 310 provided on the bracket 4, and a guiding roller 312 rotatably provided on the bracket 4. The second detection member 310 can detect the position of the outermost circle of the paper roll 100 in real time.

[0084] The advantages of the roll paper printers in Embodiments 1 to 4 are as follows:

[0085] First: It can load more consumables at one time, extend the maintenance cycle of the roll paper 100 printer, and reduce the maintenance cost of the roll paper printer;

[0086] Second: It can flexibly set the working state of the print head 213 to achieve double-sided or multi-color printing;

[0087] Third: The separated upper and lower structural design of the printing mechanism 2 and the consumable reel 1 improves the appearance beauty of the roll paper printer and the flexibility of the structural design.

[0088] In the description of this specification, the descriptions referring to terms such as "some embodiments", "other embodiments", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0089] The above content is only the preferred embodiment of the present invention. For those of ordinary skill in the art, based on the idea of the present invention, there will be changes in the specific implementation manners and application scopes. The content of this specification should not be construed as a limitation to the present invention.

Claims

1. A roll paper printer, characterized in that: include: A consumable material reel (1), the consumable material reel (1) being used to carry a paper roll (100); A driving mechanism, the driving mechanism being used to drive the output printing paper (200) from the paper roll (100); A printing mechanism (2), the printing mechanism (2) being located above or below the consumable material reel (1); A braking mechanism (3), the braking mechanism (3) being used to brake the consumable material reel (1) so as to stop the consumable material reel (1) from rotating; The roll paper printer further comprises a bracket (4), one end of the consumable material roll shaft (1) is sleeved with a bearing, and the bearing is fitted on the side wall of the bracket (4); The braking mechanism (3) comprises: A buffer module (31), wherein the buffer module (31) is rotatably arranged on the bracket (4); A brake module (32), wherein the brake module (32) is connected to the buffer module (31); The buffer module (31) comprises: A first swing rod (311), one end of the first swing rod (311) being rotatably connected to a side wall of the bracket (4); A guide roller (312), the guide roller (312) being sleeved on the other end of the first swing rod (311), and the guide roller (312) being used for guiding the printing paper (200); a second swing rod (313), one end of the second swing rod (313) being rotatably connected to the side wall of the bracket (4), and the other end of the second swing rod (313) being capable of being driven by the first swing rod (311), and the brake module (32) being arranged on the second swing rod (313); The buffer module (31) also includes: a first elastic member (314), one end of the first elastic member (314) being connected to the bracket (4), and the other end of the first elastic member (314) being connected to the first swing rod (311), and the first elastic member (314) being used for resetting the first swing rod (311) when the roll paper printer stops printing; a second elastic member (315), one end of the second elastic member (315) being connected to the bracket (4), and the other end of the second elastic member (315) being connected to the second swing rod (313), and the second elastic member (315) being used for resetting the second swing rod (313) when the roll paper printer stops printing; The first swing rod (311) is provided with a first top block (3111), and the second swing rod (313) is provided with a second top block (3131) matched with the first top block (3111).

2. The roll paper printer according to claim 1, characterized in that: The braking mechanism (3) comprises: A brake disc (33), the brake disc (33) being arranged on the consumable reel (1), the brake disc (33) being capable of cooperating with the brake module (32), wherein: The brake module (32) is configured to be driven to disengage from the brake disc (33) to release the consumable material reel (1) when the printing paper (200) pulls the buffer module (31) to rotate.

3. The roll paper printer according to claim 2, characterized in that: The brake module (32) comprises: a brake block (321), wherein the brake block (321) is rotatably disposed on the second swing rod (313), A brake pad (322), the brake pad (322) being arranged on the brake block (321), the brake pad (322) having an arc surface matching the circumferential surface of the brake disc (33); A third elastic member (323), one end of the third elastic member (323) is connected to the brake block (321), and the other end is abutted against the second swing rod (313), and the third elastic member (323) is used to reset the brake block (321) when the roll paper printer stops printing.

4. The roll paper printer according to claim 1, characterized in that: The braking mechanism (3) comprises: An electromagnetic brake component (36), the electromagnetic brake component (36) being arranged on the consumable material reel (1), and the electromagnetic brake component (36) being used for braking or releasing the consumable material reel (1); a swing rod (37), one end of which is rotatably connected to the side wall of the bracket (4), and a guide portion (371) is provided on one end of the swing rod (37), and the guide portion (371) is used to guide the printing paper (200); A first detection member (38), the first detection member (38) being used to detect the position of the swing rod (37); The electromagnetic brake component (36) is configured to release or brake the consumable material reel (1) when the first detection component (38) detects that the swing lever (37) is rotating.

5. The roll paper printer according to claim 1, characterized in that: The braking mechanism (3) comprises: A driving motor (39), wherein the driving motor (39) is capable of driving the consumable material reel (1) to rotate; A second detection member (310), the second detection member (310) being used to detect the outer ring position of the paper roll (100); The driving motor (39) is configured to adjust the rotation speed of the consumable material reel (1) according to the outer ring position of the paper roll (100) detected by the second detection element (310) to adapt to the printing speed of the roll paper printer.

6. The roll paper printer according to any one of claims 1 to 5, characterized in that: There are a plurality of printing mechanisms (2), and the plurality of printing mechanisms (2) are arranged in sequence along the conveying direction of the printing paper (200). At least some of the printing mechanisms (2) have a printing position and a sleep position, and include a printing module (21) and a lifting module (22). The lifting module (22) cooperates with the printing module (21), and the lifting module (22) is used to lift the printing module (21) to move it from the printing position to the sleep position.

7. The roll paper printer according to claim 6, characterized in that: The lifting module (22) comprises a lifting cam (221), and the lifting cam (221) is used to drive the printing module (21) to move between the printing position and the sleeping position.

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