A printer

Abstract

The present application relates to a kind of printer, including shell, carbon tape box, print head module, adjusting elastic piece, limiting assembly and drive assembly;Carbon tape box includes box body, installation cylinder and recycling cylinder, box body is detachably arranged in shell, installation cylinder is rotationally arranged in box body, recycling cylinder is rotationally arranged in box body, and it is spaced apart along the radial direction with installation cylinder, and is equipped with cooperation part;Print head module is rotationally arranged in shell, and is located between installation cylinder and recycling cylinder;Adjusting elastic piece is arranged between box body and installation cylinder;Limiting assembly includes the limiting portion of being movably arranged in box body, and corresponding to cooperation part, limiting portion can be moved to cooperate with cooperation part;Drive assembly is arranged in shell, and is drivenly connected with print head module.This scheme can make the carbon tape that is opened by print head module be rewound to installation cylinder, facilitate to take out carbon tape box maintenance, improve convenience, also avoid the situation that carbon tape appears wrinkle when taking out, to guarantee printing quality.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of printing equipment, and in particular to a printer. BACKGROUND

[0002] The printing principle of a thermal transfer printer is that the dye on a carbon ribbon is transferred to a printing medium after a print head is heated, which makes the storage time of printed ticket paper much longer than that of thermal sensitive printing paper. The thermal transfer carbon ribbon needs to be placed in a carbon ribbon cartridge of the printer during use to drive the recovery shaft of the carbon ribbon cartridge to rotate through the gear transmission in the thermal transfer printer, thereby realizing ribbon running.

[0003] For example, patent CN 109177515 A discloses a carbon ribbon erasing and carbon deposition cleaning thermal transfer printer. During printing, the print head forces the carbon ribbon between the carbon ribbon drive roller I and the carbon ribbon drive roller II to be stretched and limits the part of the carbon ribbon close to the printing paper. The rubber roller rotates in the a1 direction, the rubber roller rotation generates a2 direction friction force on the printing paper, and the printing paper movement generates a2 direction friction force on the carbon ribbon. The printing paper and the carbon ribbon move in the a2 direction at the same speed and print the specified content on the printing paper.

[0004] However, when a fault occurs during printing, the carbon ribbon in the carbon ribbon cartridge (carbon ribbon drive roller I and carbon ribbon drive roller II) is stretched by the print head, which is not conducive to the user to take out the carbon ribbon cartridge from the printer shell for maintenance, and the stretched carbon ribbon is prone to wrinkle when taken out, which affects the printing quality. SUMMARY

[0005] Therefore, it is necessary to provide a printer to solve the technical problem that the printer in the prior art is not convenient to take out the carbon ribbon cartridge for maintenance when a fault occurs during printing, and the stretched carbon ribbon is prone to wrinkle when taken out, which affects the printing quality.

[0006] The present application provides a printer, which comprises:

[0007] a shell;

[0008] a carbon ribbon cartridge comprising a cartridge body, a mounting cylinder and a recovery cylinder, the cartridge body is detachably arranged in the shell, the mounting cylinder is rotationally arranged in the cartridge body to sleeve a carbon ribbon roll to be used and to release the carbon ribbon when rotating in a forward direction, the recovery cylinder is rotationally arranged in the cartridge body and is arranged radially spaced apart from the mounting cylinder to wind the carbon ribbon released from the mounting cylinder when rotating in the forward direction, and the recovery cylinder is provided with a matching part;

[0009] The print head module is rotatably arranged in the housing and located between the installation cylinder and the recovery cylinder to have a retracted position and a printing position on a rotation stroke, the print head module is used to lift the ribbon between the installation cylinder and the recovery cylinder to a position close to the printing paper in the printing position, and is used to move away from the ribbon between the installation cylinder and the recovery cylinder in the retracted position.

[0010] The adjusting elastic member is arranged between the box body and the installation cylinder to make the installation cylinder have a reverse rotation trend when the ribbon is dispensed.

[0011] The limiting assembly includes a limiting part movably arranged in the box body and corresponding to the matching part, the limiting part can be moved to cooperate with the matching part to limit the reverse rotation of the recovery cylinder.

[0012] The drive assembly is arranged in the housing and is in driving connection with the print head module to drive the print head module to switch between the retracted position and the printing position.

[0013] Optionally, the box body is provided with an installation shaft core corresponding to the installation cylinder, the installation shaft core extends along the axis direction of the installation cylinder, and the installation cylinder is rotatably arranged outside the installation shaft core.

[0014] The adjusting elastic member includes a clamping segment and an adjusting segment connected to the clamping segment, the clamping segment is wrapped around the outer periphery of the installation shaft core and can rotate around the axis of the installation shaft core under the drive of an external force, and the adjusting segment is annularly arranged outside the installation shaft core and connected to the inner wall of the installation cylinder at one end away from the clamping segment, so that the installation cylinder has a reverse rotation trend when the ribbon is dispensed.

[0015] Optionally, the clamping segment is a clamping spring wrapped around the installation shaft core, the clamping spring can rotate around the axis of the installation shaft core under the drive of an external force to slide relative to the installation shaft core.

[0016] The adjusting segment is an adjusting spring annularly arranged outside the outer periphery of the installation shaft core, one end of the adjusting spring is connected to the clamping spring, and the other end is connected to the inner wall of the installation cylinder.

[0017] Optionally, the inner wall of the installation cylinder is provided with a stop block, the rear wall of the stop block in the forward rotation direction of the installation cylinder is a stop side wall.

[0018] One end of the adjusting spring away from the clamping spring can abut against the stop side wall to limit the movement of the adjusting spring relative to the installation cylinder.

[0019] Optionally, the engaging portion is a plurality of ratchets arranged around the outer periphery of the recovery cylinder, and the plurality of ratchets are located at one end of the recovery cylinder in the axial direction thereof;

[0020] The limiting portion comprises a clamping arm engaged with the ratchets, the clamping arm is movably arranged in the box body to have a limiting position in which the clamping arm is inserted between two adjacent ratchets and an unlimiting position in which the clamping arm is disengaged from the ratchets, and when the clamping arm is in the limiting position, the recovery cylinder can be rotated in the forward direction and the rotation of the recovery cylinder in the reverse direction is limited.

[0021] Optionally, the box body comprises a housing, a first outer cylinder and a second outer cylinder, the first outer cylinder and the second outer cylinder have the same axial direction and are arranged along the radial direction thereof, and one end of the first outer cylinder and one end of the second outer cylinder respectively communicate with the inner cavity of the housing and are located on the same side of the housing, wherein the opposite sides of the first outer cylinder and the second outer cylinder are respectively provided with openings for the carbon ribbon to pass through;

[0022] The mounting cylinder is arranged in the first outer cylinder, the recovery cylinder is arranged in the second outer cylinder, and the ratchets are located at one end of the recovery cylinder close to the housing;

[0023] The limiting portion further comprises a rotating arm connected to the clamping arm at an angle, the rotating arm is rotatably arranged on the inner wall of the housing in the radial direction of the recovery cylinder and is located on the side of the inner wall of the housing close to the recovery cylinder, so as to drive the clamping arm to move between the limiting position and the unlimiting position when the rotating arm rotates.

[0024] Optionally, the limiting assembly further comprises a limiting elastic member arranged between the inner wall of the housing and the rotating arm, the limiting elastic member is used to drive the rotating arm to move, so as to drive the clamping arm to reset from the unlimiting position to the limiting position.

[0025] Optionally, the driving assembly comprises:

[0026] a first rotating shaft rotatably arranged in the housing;

[0027] a driving cam arranged on the first rotating shaft, and an end of the driving cam away from the first rotating shaft is formed with at least one driving surface for driving the printhead module to rotate, when the first rotating shaft drives the driving cam to rotate, the driving surface is used to drive the printhead module to switch from the retracted position to the printing position; and,

[0028] a reset elastic member arranged between the printhead module and the housing, so as to drive the printhead module to reset from the printing position to the retracted position when the driving surface is disengaged from the printhead module.

[0029] Optionally, two driving surfaces are provided, and the two driving surfaces are sequentially connected along the circumference of the driving cam, and are used to sequentially drive the print head module to rotate.

[0030] Optionally, the print head module comprises:

[0031] a second rotating shaft, which is rotatably arranged in the housing; and

[0032] a print head structure, which comprises a print head, a pressing plate, and a pressing elastic member arranged between the print head and the pressing plate, the print head is arranged on the second rotating shaft and is located between the installation cylinder and the recovery cylinder, so as to lift the ribbon between the installation cylinder and the recovery cylinder to a position close to the printing paper when the printing position is reached, and to move away from the ribbon between the installation cylinder and the recovery cylinder when the storage position is reached.

[0033] The reset elastic member is arranged between the second rotating shaft and the housing, and the driving surface abuts against the pressing plate, so as to drive the print head to switch from the storage position to the printing position when the driving cam rotates.

[0034] Compared with the prior art, the printer provided by the application drives the print head module to rotate from the storage position to the printing position by the driving assembly, so as to lift the ribbon between the installation cylinder and the recovery cylinder to a position close to the printing paper, and then perform a printing action.

[0035] When the printer fails and the ribbon cartridge needs to be taken out for maintenance, the limiting part is first moved to a position where it cooperates with the cooperating part, so as to limit the reverse rotation of the recovery cylinder and avoid the reverse rotation of the recovery cylinder to loosen the ribbon. Then, the print head module is driven by the driving assembly to rotate from the printing position to the storage position, so that the print head module is separated from and avoids the ribbon between the installation cylinder and the recovery cylinder; at this time, the installation cylinder has a tendency to rotate in reverse due to the adjustment elastic member, and the ribbon between the installation cylinder and the recovery cylinder loses the lifting force of the print head module, so that the installation cylinder can rotate in reverse to rewind the ribbon between it and the recovery cylinder, so that the ribbon opened by the print head module is rewound onto the installation cylinder. In this way, the ribbon cartridge can be easily taken out for maintenance, improving convenience, while also avoiding the situation that the ribbon is wrinkled when taken out, thereby ensuring the printing quality.

[0036] The above description is only a summary of the technical solutions of the application. In order to more clearly understand the technical means of the application, and to implement the content of the description, the preferred embodiments of the application are described in detail below with reference to the accompanying drawings. The specific embodiments of the application are described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0037] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

[0038] Figure 1 Structure diagram of an embodiment of the printer provided by the present application;

[0039] Figure 2 Structure diagram of the printer provided by the present application; Figure 1 Structure diagram of the medium carbon tape cartridge;

[0040] Figure 3 Structure diagram of the medium carbon tape cartridge; Figure 1 Structure diagram of the printer in the A-A plane;

[0041] Figure 4 Structure diagram of the medium carbon tape cartridge; Figure 3 Structure diagram of the medium carbon tape cartridge;

[0042] Figure 5 Structure diagram of the medium carbon tape cartridge; Figure 4 Structure diagram of the medium carbon tape cartridge;

[0043] Figure 6 Structure diagram of the medium carbon tape cartridge; Figure 5 Structure diagram of the medium carbon tape cartridge;

[0044] Figure 7 Structure diagram of the medium carbon tape cartridge; Figure 2 Structure diagram of the medium carbon tape cartridge (cover not shown);

[0045] Figure 8 Structure diagram of the medium carbon tape cartridge; Figure 7 Structure diagram of the medium carbon tape cartridge;

[0046] Figure 9 Structure diagram of the medium carbon tape cartridge; Figure 7 Structure diagram of the medium carbon tape cartridge;

[0047] Figure 10 Structure diagram of the medium carbon tape cartridge; Figure 7 Structure diagram of the medium carbon tape cartridge;

[0048] Figure 11 Structure diagram of the medium carbon tape cartridge; Figure 2 Structure diagram of the medium carbon tape cartridge;

[0049] Figure 12 Structure diagram of the medium carbon tape cartridge; Figure 7 Structure diagram of the medium carbon tape cartridge;

[0050] Figure 13 Structure diagram of the medium carbon tape cartridge; Figure 1 Structure diagram of the medium carbon tape cartridge;

[0051] Figure 14 Structure diagram of the medium carbon tape cartridge; Figure 3A cross-sectional view of the recovery cylinder;

[0052] Figure 15 A Figure 1 A structural view of the drive assembly (without reset elastic member) and the housing;

[0053] Figure 16 A Figure 1 A structural view of the printhead module, reset elastic member and the housing;

[0054] Figure 17 A Figure 16 A structural view of the printhead module and reset elastic member;

[0055] Figure 18 A Figure 1 A structural view of the ejection elastic member and the housing.

[0056] BRIEF DESCRIPTION OF DRAWINGS

[0057] 100 - printer, 1 - housing, 1a - accommodation slot, 1b - through hole, 1c - avoidance slot, 11 - ejection elastic member, 2 - ribbon cartridge, 21 - cartridge body, 211 - outer shell, 211a - avoidance opening, 2111 - limiting structure, 2111a - limiting slot, 212 - first outer cylinder, 213 - second outer cylinder, 22 - mounting cylinder, 221 - stop block, 2211 - stop side wall, 23 - recovery cylinder, 231 - matching part, 2311 - ratchet, 232 - recovery shaft core, 2321 - limiting block, 233 - recovery outer cylinder, 2331 - clamping block, 234 - recovery gear, 24 - mounting shaft core, 241 - guide ring, 3 - printhead module, 31 - second rotating shaft, 32 - printhead, 33 - pressing plate, 34 - pressing elastic member, 4 - adjusting elastic member, 41 - clamping section, 42 - adjusting section, 5 - limiting assembly, 51 - limiting part, 511 - clamping arm, 512 - rotating arm, 513 - driving protrusion, 52 - limiting elastic member, 53 - mounting seat, 54 - baffle, 6 - drive assembly, 61 - first rotating shaft, 62 - driving cam, 621 - driving surface, 63 - reset elastic member, 64 - driving handle, 641 - stop protrusion, 7 - paper feed roller, 71 - paper feed gear, 8 - drive structure, 81 - drive motor, 82 - transmission gear, 83 - transition gear, 9 - base. DETAILED DESCRIPTION

[0058] The preferred embodiments of the present application will be described in detail with reference to the drawings, in which the same or similar components are denoted by the same reference numerals, and therefore the description will be given only with respect to the differences from the previous embodiments.

[0059] Please refer to Figures 1 to 8The printer 100 comprises a housing 1, a ribbon cartridge 2, a print head module 3, an adjusting elastic member 4, a limiting assembly 5 and a driving assembly 6; the ribbon cartridge 2 comprises a cartridge body 21, a mounting cylinder 22 and a recycling cylinder 23, the cartridge body 21 is detachably arranged in the housing 1, the mounting cylinder 22 is rotationally arranged in the cartridge body 21, used for sleeving a ribbon to be used, and used for dispensing the ribbon when rotating in a forward direction, the recycling cylinder 23 is rotationally arranged in the cartridge body 21 and is arranged along a radial direction of the mounting cylinder 22, used for winding the ribbon dispensed from the mounting cylinder 22 when rotating in the forward direction, and is provided with a matching part 231; the print head module 3 is rotationally arranged in the housing 1 and is located between the mounting cylinder 22 and the recycling cylinder 23, so as to have a retracted position and a printing position on a rotating stroke, the print head module 3 is used for lifting the ribbon between the mounting cylinder 22 and the recycling cylinder 23 to a position close to a printing paper when being in the printing position, and is used for being away from the ribbon between the mounting cylinder 22 and the recycling cylinder 23 when being in the retracted position; the adjusting elastic member 4 is arranged between the cartridge body 21 and the mounting cylinder 22, used for making the mounting cylinder 22 have a tendency of reverse rotation when dispensing the ribbon; the limiting assembly 5 comprises a limiting part 51 movably arranged in the cartridge body 21 and corresponding to the matching part 231, the limiting part 51 can be moved to cooperate with the matching part 231, used for limiting the reverse rotation of the recycling cylinder 23; the driving assembly 6 is arranged in the housing 1 and is drivingly connected with the print head module 3, used for driving the print head module 3 to switch between the retracted position and the printing position.

[0060] The printer 100 provided by the present application drives the print head module 3 to rotate from the retracted position to the printing position by the driving assembly 6 when printing normally, so as to lift the ribbon between the mounting cylinder 22 and the recycling cylinder 23 to a position close to a printing paper, and then performs a printing action.

[0061] When the printer 100 fails and the ribbon cartridge 2 needs to be taken out for maintenance, the limiting part 51 is first moved to a position cooperating with the matching part 231 to limit the reverse rotation of the recycling cylinder 23, so as to avoid the reverse rotation of the recycling cylinder 23 to loosen the ribbon. Then the print head module 3 is driven by the driving assembly 6 to rotate from the printing position to the retracted position, so that the print head module 3 is separated from and avoids the ribbon between the mounting cylinder 22 and the recycling cylinder 23; at this time, the mounting cylinder 22 has a tendency of reverse rotation due to the adjusting elastic member 4, and the ribbon between the mounting cylinder 22 and the recycling cylinder 23 loses the lifting force of the print head module 3, so that the mounting cylinder 22 can rotate reversely to rewind the ribbon between the mounting cylinder 22 and the recycling cylinder 23, so as to rewind the ribbon opened by the print head module 3 to the mounting cylinder 22. In this way, the ribbon cartridge 2 can be conveniently taken out for maintenance, the convenience is improved, and the situation that the ribbon is wrinkled when being taken out is avoided, so as to ensure the printing quality.

[0062] It should be understood that the installation cylinder 22 and the recovery cylinder 23 rotate around the respective axes, and the axes of the two are in the same direction. In addition, the installation cylinder 22 is used to release the ribbon when rotating in the forward direction, and is used to wind the ribbon when rotating in the reverse direction. While the recovery cylinder 23 is used to wind the ribbon when rotating in the forward direction, and is used to release the ribbon when rotating in the reverse direction. In particular, please refer to Figure 3 In the embodiment, the forward rotation direction of the recovery cylinder 23 and the installation cylinder 22 is counterclockwise.

[0063] Further, please refer to Figures 4 to 6 The cartridge 21 is provided with an installation shaft core 24 corresponding to the installation cylinder 22, the installation shaft core 24 extends along the axis direction of the installation cylinder 22, and the installation cylinder 22 is rotatably sleeved outside the installation shaft core 24. The adjusting elastic member 4 includes a clamping section 41 and an adjusting section 42 connected to the clamping section 41. The clamping section 41 is wrapped around the outer periphery of the installation shaft core 24 and can rotate around the axis of the installation shaft core 24 under the driving of an external force. The adjusting section 42 is wrapped outside the installation shaft core 24 and is connected to the inner wall of the installation cylinder 22 away from the clamping section 41, so that the installation cylinder 22 has a tendency to rotate in the reverse direction when releasing the ribbon. In the embodiment, the recovery cylinder 23 drives the installation cylinder 22 to rotate in the forward direction when winding the ribbon, so that the installation cylinder 22 releases the ribbon. At this time, the clamping section 41 rotates around the axis of the installation shaft core 24 to slide relative to the installation shaft core 24, without affecting the normal release of the ribbon by the installation cylinder 22. In addition, the clamping section 41 and the adjusting section 42 accumulate elastic potential energy when the installation cylinder 22 rotates in the forward direction, so that the installation cylinder 22 has a tendency to rotate in the reverse direction.

[0064] In this way, without affecting the normal winding of the ribbon by the recovery cylinder 23, the ribbon between the installation cylinder 22 and the recovery cylinder 23 always has a tight damping feeling, ensuring that the ribbon is not wrinkled during printing. When the printhead module 3 moves away from the printing position, the clamping section 41 and the adjusting section 42 drive the installation cylinder 22 to rotate in the reverse direction, so that the installation cylinder 22 can rewind the ribbon between it and the recovery cylinder 23 that is lifted by the printhead module 3. In this way, even if the ribbon cartridge 2 is taken out of the shell 1, the ribbon can still be ensured to be tight, effectively avoiding loose and wrinkled ribbon, thereby facilitating the taking and placing of the ribbon cartridge 2 from the shell 1, and improving convenience.

[0065] In addition, in the embodiment, the clamping section 41 and the adjusting section 42 are both made of elastic material, and the adjusting section 42 gradually expands when the installation cylinder 22 releases the ribbon, thereby driving the clamping section 41 to expand, so as to reduce the friction between the clamping section 41 and the installation shaft core 24. In particular, the clamping section 41 goes through two processes of initial state and equilibrium state when expanding. In the initial state, the rewinding force of the clamping section 41 gradually increases from 0 to F1; and in the equilibrium state, the clamping section 41 releases the installation shaft core 24, the friction between the clamping section 41 and the installation shaft core 24 is reduced, and the rewinding force is equal to the difference between the supply end elastic force and F1.

[0066] Further, the embracing segment 41 is an embracing spring embracing the outer periphery of the mounting shaft core 24, and the embracing spring can rotate around the axis of the mounting shaft core 24 under external force to slide relative to the mounting shaft core 24; the adjusting segment 42 is an adjusting spring arranged at the outer periphery of the mounting shaft core 24 in a spaced manner, and one end of the adjusting spring is connected to the embracing spring, and the other end is connected to the inner wall of the mounting cylinder 22. In the scheme, the automatic rewinding of the carbon tape is realized through the cooperation of the adjusting spring and the embracing spring, the operation is relatively simple, and the structure is compact, simple and cost-saving. Specifically, the inner diameter of the embracing spring is smaller than the inner diameter of the adjusting spring, so as to facilitate the rotation of the mounting cylinder 22 relative to the mounting shaft core 24.

[0067] Further, the inner wall of the mounting cylinder 22 is provided with a stop block 221, and the rear side wall of the stop block 221 in the forward rotation direction of the mounting cylinder 22 is a stop side wall 2211; one end of the adjusting spring away from the embracing spring can abut against the stop side wall 2211 to limit the movement of the adjusting spring relative to the mounting cylinder 22. In the scheme, when the mounting cylinder 22 rotates to release the carbon tape, the end of the adjusting spring away from the embracing spring abuts against the stop side wall 2211 to prevent the adjusting spring from sliding relative to the mounting cylinder 22, thereby forcing the adjusting spring to expand and driving the embracing spring to expand.

[0068] Further, the stop block 221 is provided with a plurality of stop blocks 221, and the plurality of stop blocks 221 are arranged in a spaced manner along the circumference of the mounting cylinder 22. In the embodiment, the stop block 221 is provided with three stop blocks. In the embodiment, the plurality of stop blocks 221 are arranged in a spaced manner, so that the adjusting spring cooperates with any stop side wall 2211, thereby facilitating assembly and improving the strength of the mounting cylinder 22. At the same time, the adjusting rotation stroke of the adjusting spring during installation is shortened, so that the assembly is more convenient.

[0069] To avoid the embracing spring and the adjusting spring moving along the axis of the mounting shaft core 24 and separating from the stop side wall 2211, in the embodiment, the stop block 221 extends along the axis of the mounting cylinder 22. In this way, even if the embracing spring and the adjusting spring move along the axis of the mounting shaft core 24, the end of the adjusting spring away from the embracing spring can always abut against the stop side wall 2211.

[0070] Specifically, the stop side wall 2211 is arranged in an inclined manner from the inner end to the outer end towards the opposite side. In the embodiment, the stop block 221 is arranged in the form of a dovetail to further prevent the adjusting spring from passing through the stop side wall 2211, so that the stop block 221 can stably cooperate with the adjusting spring. Correspondingly, the end of the adjusting spring abutting against the stop side wall 2211 includes a connecting segment extending along the radial direction of the mounting cylinder 22 and an extension segment connected to the connecting segment and extending along the axis of the mounting cylinder 22.

[0071] Further, please refer to Figures 7 to 9The engaging portion 231 is a plurality of ratchets 2311 arranged in a ring around the outer periphery of the recovery cylinder 23, and the plurality of ratchets 2311 are located at one end of the recovery cylinder 23 in the axial direction. The limiting portion 51 includes a clamping arm 511 matched with the ratchets 2311, and the clamping arm 511 is movably arranged in the box body 21 to have a limiting position in which the clamping arm 511 is inserted between two adjacent ratchets 2311, and a non-limiting position in which the clamping arm 511 is separated from the ratchets 2311. When the clamping arm 511 is in the limiting position, the recovery cylinder 23 can be rotated forward and the rotation of the recovery cylinder 23 in the reverse direction is limited. In this embodiment, the clamping arm 511 has a limiting position and a non-limiting position. When the clamping arm 511 is in the limiting position, the clamping arm 511 is clamped between the corresponding two adjacent ratchets 2311, so that the recovery cylinder 23 can only be rotated forward to wind the ribbon, and cannot be rotated in the reverse direction. Therefore, under the cooperation of the elastic member 4, the ribbon can be recovered and tightened.

[0072] When the clamping arm 511 is in the non-limiting position, the clamping arm 511 is separated from the ratchets 2311, so that the recovery cylinder 23 can be rotated in the reverse direction. In this way, when the printer 100 abnormally winds the unused ribbon on the recovery cylinder 23, the ribbon cartridge 2 can be taken out of the printer 100, and the clamping arm 511 is moved to the non-limiting position in which the clamping arm 511 is separated from the ratchets 2311, so that the recovery cylinder 23 can be rotated in the reverse direction, and the mounting cylinder is also rotated in the reverse direction to re-wind the unused ribbon on the recovery cylinder 23 onto the mounting cylinder 22. After the unused ribbon is re-wound on the mounting cylinder 22, the clamping arm 511 is moved to the limiting position, thereby avoiding waste of the ribbon, improving the utilization rate of the ribbon, and saving cost.

[0073] Further, the box body 21 includes an outer shell 211, a first outer cylinder 212 and a second outer cylinder 213. The first outer cylinder 212 and the second outer cylinder 213 have the same axial direction and are arranged along the radial direction. One end of the first outer cylinder 212 and one end of the second outer cylinder 213 respectively communicate with the inner cavity of the outer shell 211 and are located on the same side of the outer shell 211. The opposite side of the first outer cylinder 212 and the opposite side of the second outer cylinder 213 are respectively provided with openings for the ribbon to pass through. The mounting cylinder 22 is arranged in the first outer cylinder 212, the recovery cylinder 23 is arranged in the second outer cylinder 213, and the ratchets 2311 are located at one end of the recovery cylinder 23 close to the outer shell 211. The limiting portion 51 further includes a rotating arm 512 connected with the clamping arm 511 at an angle. The rotating arm 512 is rotatably arranged on the inner wall of the outer shell 211 close to the recovery cylinder 23, and drives the clamping arm 511 to move between the limiting position and the non-limiting position when the rotating arm 512 rotates.

[0074] In the scheme, the first outer cylinder 212 and the second outer cylinder 213 are arranged to reduce the space required by the carbon ribbon cartridge 2 in the printer 100, and improve the space utilization of the printer 100. At the same time, the rotation of the rotating arm 512 drives the clamping arm 511 to move, so as to fully utilize the space of the shell 211 in the arrangement direction of the first outer cylinder 212 and the second outer cylinder 213, improve the space utilization of the shell 211, and make the overall structure more compact. Specifically, when the rotating arm 512 rotates, it can drive the clamping arm 511 to extend into the second outer cylinder 213 and be clamped between the corresponding adjacent two ratchet teeth 2311; at the same time, it can also drive the clamping arm 511 to disengage from the ratchet tooth 2311, so that the recycling cylinder 23 can rotate in two directions.

[0075] Specifically, please refer to Figure 10 The limiting elastic member 52 is arranged between the inner wall of the shell 211 and the rotating arm 512, and is used to drive the rotating arm 512 to move, so as to drive the clamping arm 511 to reset from the limiting position to the limiting position. In this way, after the printer 100 appears an abnormal situation and resets the unused carbon ribbon, the rotating arm 512 can drive the clamping arm 511 to reset from the limiting position to the limiting position under the drive of the limiting elastic member 52, without the need for manual drive, thereby improving the convenience. In the scheme, the limiting elastic member 52 is a spring.

[0076] Specifically, please refer to Figure 11 and Figure 12 The inner wall of the shell 211 is provided with an avoiding opening 211a corresponding to the rotating arm 512, and the avoiding opening 211a is located on the side of the inner wall of the shell 211 close to the recycling cylinder 23; the rotating arm 512 is provided with a driving protrusion 513 facing the avoiding opening 211a, and the driving protrusion 513 extends out of the avoiding opening 211a. In the scheme, when it is necessary to drive the clamping arm 511 to the releasing position, the user can press the driving protrusion 513 located outside the avoiding opening 211a, so that the driving protrusion 513 moves into the shell 211, and then the rotating arm 512 rotates correspondingly to drive the clamping arm 511 to move from the limiting position to the releasing position. The structure is simple and compact, and is convenient for user operation, thereby improving the user experience.

[0077] Further, the limiting assembly 5 further comprises a mounting seat 53 protruding from the inner wall of the shell 211, the mounting seat 53 is located on the side of the inner wall of the shell 211 close to the recovery cylinder 23 and corresponds to the rotating arm 512; the rotating arm 512 and one of the mounting seats 53 are provided with a rotating shaft, and the other is provided with a shaft hole matched with the rotating shaft, and the rotating shaft and the shaft hole extend along the radial direction of the recovery cylinder 23. In this embodiment, the rotation of the rotating arm 512 is realized by the cooperation of the rotating shaft and the shaft hole, which is simple and reliable. Specifically, in this scheme, two mounting seats 53 are provided, and the two mounting seats 53 are located on the two sides corresponding to the rotating arm 512, and each mounting seat 53 is provided with a shaft hole along the radial direction of the recovery cylinder 23, and the corresponding rotating arm 512 is provided with a rotating shaft, and the rotating shaft is inserted into the shaft hole to realize the rotation of the rotating arm 512.

[0078] Specifically, the limiting assembly 5 further comprises two baffles 54 protruding from the inner wall of the shell 211, and the two baffles 54 are clamped on the opposite sides of the rotating arm 512 to limit the axial movement of the rotating arm 512 along the rotating shaft. In this way, the axial movement of the rotating arm 512 along the rotating shaft is limited by the two baffles 54, that is, the radial movement of the clamping arm 511 along the recovery cylinder 23 is avoided, so that the cooperation between the clamping arm 511 and the ratchet 2311 is more stable.

[0079] Further, the shell 211 comprises a base and a cover body detachably covered on the base, the cover body and the base jointly enclose an inner cavity; the first outer cylinder 212 and the second outer cylinder 213 are connected to the base, and the rotating arm 512 is rotatably arranged on the inner wall of the base. In this embodiment, the shell 211 is arranged to be detachably connected to the base and the cover body, and the first outer cylinder 212 and the second outer cylinder 213 are respectively connected to the base and communicate with the inner cavity enclosed by the base and the cover body, and the rotating arm 512 is arranged on the inner wall of the base. In this way, when the cooperation between the limiting part 51 and the cooperation part 231 is abnormal, it is convenient for the user to check.

[0080] Further, the outer side wall of the base is recessed with a clamping groove; the cover body comprises a main body part and an extension part encircling one side of the main body part, and the inner side of the extension part is protruded with a clamping protrusion corresponding to the clamping groove, and when the cover body is covered on the base, the clamping protrusion can be clamped in the clamping groove, so that the cover body is detachably covered on the base. In this embodiment, when the cover body is covered on the base, the end of the base away from the first cylinder and the second cylinder extends into the extension part, and at the same time the clamping protrusion is clamped in the clamping groove, realizing the cover of the cover body on the base; when it is necessary to detach the cover body, the user can drive the clamping protrusion to separate from the clamping groove by applying external force, which is simple and reliable.

[0081] Further, the outer circumferential ring of the mounting shaft core 24 is provided with a guide ring 241 which is slidably abuts against the inner wall of the mounting cylinder 22 at the end away from the mounting shaft core 24. In the present scheme, when the mounting cylinder 22 rotates around the axis of the mounting shaft core 24, the inner wall thereof is in sliding connection with the outer circumferential ring of the guide ring 241, avoiding the axis of the mounting cylinder 22 from deviating from the axis of the mounting shaft core 24, so that the rotation of the mounting cylinder 22 is more smooth and stable.

[0082] Further, referring to Figure 1 and Figure 13 the printer 100 further comprises a paper feed rubber roller 7 and a driving structure 8 provided in the housing 1 of the printer 100, the paper feed rubber roller 7 rotates around its axis, and the axis direction thereof is the same as that of the recycling cylinder 23, one end of the paper feed rubber roller 7 is provided with a paper feed gear 71; the driving structure 8 is drivingly connected with the recycling cylinder 23, for driving the recycling cylinder 23 to rotate. Specifically, the recycling cylinder 23 is provided with a recycling gear 234 corresponding to the paper feed gear 71; the driving structure 8 comprises a driving motor 81 and a transmission gear 82 engaged between the paper feed gear 71 and the recycling gear 234, the output shaft of the driving motor 81 is provided with a driving gear, and a transition gear 83 is engaged between the driving gear and the paper feed gear 71.

[0083] In the present embodiment, when the driving motor 81 is working, the driving gear on the output shaft thereof drives the transition gear 83, the paper feed gear 71, the transmission gear 82 and the recycling gear 234 in sequence, so that the paper feed rubber roller 7 and the recycling cylinder 23 are simultaneously driven to rotate by one driving motor 81, saving cost and making the overall structure more compact and the transmission precision higher; in addition, the paper feed rubber roller 7 and the carbon ribbon can be synchronously rotated, ensuring that there is no step loss and no stretching in the printing process. It should be noted that in the present embodiment, two transition gears 83 are provided, and each transition gear 83 and the transmission gear 82 are respectively provided with a main gear and a secondary gear, so as to realize the rotation of the paper feed rubber roller 7 and the recycling cylinder 23. In addition, the cartridge 21, the paper feed rubber roller 7 and the driving structure 8 in the present embodiment are correspondingly provided in the housing 1 of the printer 100.

[0084] Further, referring to Figure 14The recycling cylinder 23 comprises a recycling shaft core 232 penetrating the box body 21 and a recycling outer cylinder 233 sleeved outside the recycling shaft core 232. The recycling shaft core 232 is provided with a plurality of limiting blocks 2321 at intervals in the circumferential direction. The inner wall of the recycling outer cylinder 233 is provided with clamping blocks 2331 corresponding to the limiting blocks 2321. The clamping blocks 2331 are clamped between two adjacent limiting blocks 2321. The recycling gear 234 is arranged at one end of the recycling shaft core 232. In this embodiment, the recycling cylinder 23 is arranged in the form of the recycling shaft core 232 and the recycling outer cylinder 233, so that the recycling outer cylinder 233 can be conveniently removed from the recycling shaft core 232 and replaced, and the convenience is improved.

[0085] It should be noted that, since the recycling outer cylinder 233 is installed in the printer 100 in a blind manner, in order to avoid the front end of the recycling outer cylinder 233 from being lowered due to the self-weight and causing misalignment with the recycling shaft core 232. In this embodiment, the end of the recycling shaft core 232 extending into the recycling outer cylinder 233 is provided with a guide angle. When the recycling outer cylinder 233 is connected to the recycling shaft core 232, the guide angle can guide and correct the recycling outer cylinder 233, so as to guide the recycling outer cylinder 233 to be connected to the recycling shaft core 232.

[0086] Specifically, the clamping blocks 2331 are provided in plurality and arranged at intervals in the circumferential direction of the recycling outer cylinder 233. It should be noted that, in an embodiment, a clamping gap is formed between two adjacent limiting blocks 2321, and the plurality of clamping blocks 2331 are arranged one by one corresponding to the plurality of clamping gaps, so that the cooperation between the recycling outer cylinder 233 and the recycling shaft core 232 is more stable. In this embodiment, the clamping blocks 2331 are provided in three, and the clamping gaps are provided in six, and the three clamping blocks 2331 are clamped in the corresponding clamping gaps at intervals.

[0087] Further, referring to Figures 15 to 17 The driving assembly 6 comprises a first rotating shaft 61, a driving cam 62 and a reset elastic member 63. The first rotating shaft 61 is rotatably arranged in the housing 1. The driving cam 62 is arranged on the first rotating shaft 61, and the end thereof away from the first rotating shaft 61 is provided with at least one driving surface 621 for driving the print head module 3 to rotate. When the first rotating shaft 61 drives the driving cam 62 to rotate, the driving surface 621 is used to drive the print head module 3 to switch from the storage position to the printing position. The reset elastic member 63 is arranged between the print head module 3 and the housing 1, so as to drive the print head module 3 to reset from the printing position to the storage position when the driving surface 621 is separated from the print head module 3. Specifically, the driving surface 621 is provided in two, and the two driving surfaces 621 are connected in sequence in the circumferential direction of the driving cam 62, for sequentially driving the print head module 3 to rotate.

[0088] In the scheme, the two driving surfaces 621 can drive the print head module 3 to rotate by a certain angle. The first driving surface 621 mainly drives the print head module 3 to rotate, and the second driving surface 621 drives the print head module 3 to rotate on one hand and abuts the print head module 3 against the paper roller 7 on the other hand, so as to facilitate the stable locking of the print head module 3 and facilitate the printing work. When the driving cam 62 is rotated to the position where the driving surface 621 is separated from the print head module 3 after printing is completed, the reset elastic member 63 can drive the print head module 3 to automatically reset to the printing position to the storage position.

[0089] Further, the print head module 3 comprises a second rotating shaft 31 and a print head 32 structure. The second rotating shaft 31 is rotatably arranged in the housing 1. The print head 32 structure comprises the print head 32, a pressing plate 33, and a pressing elastic member 34 arranged between the print head 32 and the pressing plate 33. The print head 32 is arranged on the second rotating shaft 31 and located between the installation cylinder 22 and the recovery cylinder 23, so as to lift the carbon ribbon located between the installation cylinder 22 and the recovery cylinder 23 to a position close to the printing paper when in the printing position, and to be away from the carbon ribbon located between the installation cylinder 22 and the recovery cylinder 23 when in the storage position. The reset elastic member 63 is arranged between the second rotating shaft 31 and the housing 1, and the driving surface 621 abuts against the pressing plate 33, so as to drive the print head 32 to switch from the storage position to the printing position when the driving cam 62 is rotated.

[0090] In the embodiment, when the print head 32 is in the printing position, the pressing elastic member 34 is in a compressed state, so as to further stably lock the print head 32, and the locking effect is better. When the print head 32 is in the storage position, the reset elastic member 63 is in a stretched state, so as to facilitate the adjustment and maintenance of the print head 32, so as to meet the requirements of actual application. It should be noted that in the embodiment, the reset elastic member 63 is a torsion spring, and the pressing elastic member 34 is a spring.

[0091] In order to further stably lock the print head module 3, the end of the driving cam 62 away from the first rotating shaft 61 is formed with an abutting surface. The two driving surfaces 621 and the abutting surface are sequentially connected along the circumference of the driving cam 62. When the print head 32 is in the printing position, the abutting surface is used to press the pressing plate 33, so that the pressing elastic member 34 is in a compressed state. When the print head 32 is in the printing position, the abutting surface is arranged and pressed by the abutting surface, so as to increase the compression amount of the pressing elastic member 34. At this time, the print head module 3 can be further stably locked, and the locking effect is better.

[0092] The two driving surfaces 621 and the abutting surface are circularly chamfered in sequence, so that the driving process of the print head module 3 is more stable, and the two driving surfaces 621 and the abutting surface correspond to one stroke respectively. Therefore, the second rotating shaft 31 corresponds to three stroke positions, so as to adjust the position of the print head module 3.

[0093] In order to make the structure of each component of the print head module 3 more compact, the print head 32 is formed with a clamping groove at one end close to the pressing plate 33, the pressing plate 33 is formed with a clamping portion for clamping in the clamping groove at one end close to the print head 32, and the clamping portion can move in the clamping groove along the extension direction of the pressing elastic member 34, so as to move the pressing plate 33 relative to the print head 32. When the driving assembly 6 drives the print head 32 to switch between the printing position and the storage position, the clamping groove and the clamping portion are arranged, so that the structure of each component of the print head module 3 is more compact, and the print head module 3 is better locked.

[0094] Further, the bottom of the shell 1 is formed with a clearance groove 1a, and the driving assembly 6 further includes a driving handle 64, one end of the driving handle 64 is arranged at the second rotating shaft 31, and the other end extends out of the clearance groove 1a. The driving handle 64 is used to drive the second rotating shaft 31 to rotate, and then the print head 32 can be driven to rotate from the storage position to the printing position. The structure is simple, the operation is convenient, and the practical application is facilitated.

[0095] Further, the shell 211 of the carbon ribbon cartridge 2 is provided with a limiting structure 2111 corresponding to the driving handle 64, the limiting structure 2111 is formed with a limiting groove 2111a; at the same time, the shell 1 of the printer 100 is provided with a clearance groove 1c corresponding to the limiting structure 2111, and is provided with a through hole 1b corresponding to the first outer cylinder 212 and the second outer cylinder 213 of the carbon ribbon cartridge 2 respectively; and the driving handle 64 is provided with a stop protrusion 641 corresponding to the limiting groove 2111a, and the limiting groove 2111a is arranged with an opening towards the stop protrusion 641. In this way, when the carbon ribbon cartridge 2 is installed, the first outer cylinder 212 and the second outer cylinder 213 are respectively centered and correspond to the through hole 1b to extend into the shell 1; at the same time, the limiting structure 2111 extends into the shell 1 from the clearance groove 1c, so that the limiting groove 2111a corresponds to the stop protrusion 641. Specifically, when the print head 32 is in the storage position, the driving handle 64 is placed correspondingly, at this time, the stop protrusion 641 is located outside the limiting groove 2111a, and the carbon ribbon cartridge 2 can be separated from the shell 1 of the printer 100; when the driving handle 64 drives the print head 32 to be in the printing position, the stop protrusion 641 extends into the limiting groove 2111a and cooperates with the side wall of the limiting groove 2111a to limit the carbon ribbon cartridge 2 from being separated from the shell 1 of the printer 100. In this way, the carbon ribbon cartridge 2 and the printer 100 can be detachably installed, and the structure is simple and reliable.

[0096] In addition, please refer to Figure 18In order to facilitate the user to take out the carbon ribbon cassette 2, the side wall opposite to the through hole 1b of the shell 1 is provided with a pop-up elastic member 11, and the pop-up elastic member 11 is arranged corresponding to the first outer cylinder 212 and / or the second outer cylinder 213. Specifically, when the first outer cylinder 212 and the second outer cylinder 213 extend into the shell 1 from the corresponding avoiding opening 211a, the pop-up elastic member 11 is pressed, so that the pop-up elastic member 11 is compressed, and the driving handle 64 is rotated to the position where the blocking protrusion 641 extends into the limiting groove 2111a. In this way, when the blocking protrusion 641 is separated from the limiting groove 2111a, the first outer cylinder 212 and the second outer cylinder 213 are popped out of the through hole 1b under the drive of the pop-up elastic member 11, so as to facilitate the user to take. It should be noted that in the embodiment, the pop-up elastic member 11 is arranged as a spring. Specifically, the printer 100 further comprises a base 9 which is detachably and rotatably connected to the shell 1, and the base 9 and the through hole 1b are located on the opposite sides of the shell 1, so as to fix the pop-up elastic member 11, thereby facilitating the installation of the pop-up elastic member 11.

[0097] The above description is only the preferred embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A printer, characterized in that, It includes: case; A ribbon cartridge includes a cartridge body, a mounting cylinder, and a recycling cylinder. The cartridge body is detachably disposed within the housing. The mounting cylinder is rotatably disposed on the cartridge body for mounting the ribbon roll to be used and for dispensing the ribbon during forward rotation. The recycling cylinder is rotatably disposed on the cartridge body and is radially spaced from the mounting cylinder for winding the ribbon dispensed from the mounting cylinder during forward rotation, and is provided with a mating part. A printhead module is rotatably disposed within the housing and located between the mounting cylinder and the recycling cylinder, having a retracted position and a printing position along its rotational stroke. In the printing position, the printhead module is used to lift the ribbon located between the mounting cylinder and the recycling cylinder to a position close to the printing paper, and in the retracted position, it is used to move away from the ribbon located between the mounting cylinder and the recycling cylinder. An adjusting elastic element is provided between the housing and the mounting cylinder to give the mounting cylinder a tendency to rotate in the opposite direction when dispensing the carbon ribbon; The limiting component includes a limiting part movably disposed on the box body and corresponding to the mating part, the limiting part being movable to engage with the mating part to restrict the reverse rotation of the recycling cylinder; as well as, A drive component is disposed in the housing and is connected to the printhead module drive to drive the printhead module to switch between the retracted position and the printing position.

2. The printer according to claim 1, characterized in that, The box body is provided with a mounting shaft corresponding to the mounting cylinder. The mounting shaft extends along the axial direction of the mounting cylinder, and the mounting cylinder is rotatably sleeved on the mounting shaft. The adjusting elastic element includes a clamping section and an adjusting section connected to the clamping section. The clamping section surrounds the outer periphery of the mounting shaft and can rotate around the axis of the mounting shaft under the drive of an external force. The adjusting section is arranged around the mounting shaft, and one end away from the clamping section is connected to the inner wall of the mounting cylinder, so that the mounting cylinder has a tendency to rotate in the opposite direction when dispensing carbon ribbon.

3. The printer according to claim 2, characterized in that, The clamping section is a clamping spring that surrounds the mounting shaft. The clamping spring can rotate around the axis of the mounting shaft under the drive of an external force, so as to slide relative to the mounting shaft. The adjustment section is an adjustment spring that is spaced around the outer periphery of the mounting shaft. One end of the adjustment spring is connected to the clamping spring, and the other end is connected to the inner wall of the mounting cylinder.

4. The printer according to claim 3, characterized in that, The inner wall of the mounting cylinder is provided with a stop block, and the rear side wall of the stop block in the positive rotation direction of the mounting cylinder is a blocking side wall. The end of the adjusting spring away from the clamping spring can abut against the stop sidewall to limit the movement of the adjusting spring relative to the mounting cylinder.

5. The printer according to claim 1, characterized in that, The mating part consists of a plurality of ratchet teeth arranged around the outer periphery of the recovery cylinder, with the plurality of ratchet teeth located at one end of the recovery cylinder in its axial direction; The limiting part includes a locking arm that engages with the ratchet. The locking arm is movably disposed in the box body to have a limiting position inserted between two adjacent ratchet teeth and a releasing position that is disengaged from the ratchet teeth. When the locking arm is in the limiting position, the recycling cylinder can rotate forward and the reverse rotation of the recycling cylinder is restricted.

6. The printer according to claim 5, characterized in that, The box body includes an outer shell, a first outer cylinder and a second outer cylinder. The first outer cylinder and the second outer cylinder are arranged with the same axial direction and are radially spaced. One end of the first outer cylinder and the second outer cylinder are respectively connected to the inner cavity of the outer shell and are located on the same side of the outer shell. The first outer cylinder and the second outer cylinder are respectively provided with openings on opposite sides for carbon ribbon to pass through. The mounting cylinder is disposed inside the first outer cylinder, the recovery cylinder is disposed inside the second outer cylinder, and the ratchet is located at the end of the recovery cylinder near the outer shell; The limiting part also includes a rotating arm that is connected at an angle to the locking arm. The rotating arm is rotatably disposed on the inner wall of the outer shell about the radial direction of the recycling cylinder and is located on the inner wall of the outer shell near the recycling cylinder, so that when rotating, it drives the locking arm to move between the limiting position and the releasing position.

7. The printer according to claim 6, characterized in that, The limiting component further includes a limiting elastic element disposed between the inner wall of the housing and the rotating arm. The limiting elastic element is used to drive the rotating arm to move, so as to drive the locking arm to reset from the unlocked position to the limiting position.

8. The printer according to claim 1, characterized in that, The driving component includes: The first rotating shaft is rotatably disposed within the housing; A drive cam, disposed on the first rotating shaft, has at least one drive surface formed at its end opposite to the first rotating shaft for driving the printhead module to rotate. When the first rotating shaft drives the drive cam to rotate, the drive surface is used to drive the printhead module to switch from the retracted position to the printing position; and... A reset elastic element is disposed between the printhead module and the housing to drive the printhead module to reset from the printing position to the retracted position when the driving surface disengages from the printhead module.

9. The printer according to claim 8, characterized in that, The drive surface is provided in two parts, and the two drive surfaces are connected sequentially along the circumference of the drive cam to drive the print head module to rotate in turn.

10. The printer according to claim 8, characterized in that, The printhead module includes: A second rotating shaft is rotatably disposed within the housing; and, The printhead structure includes a printhead, a pressure plate, and a pressure elastic member disposed between the printhead and the pressure plate. The printhead is disposed on the second rotating shaft and located between the mounting cylinder and the recycling cylinder, so that when in the printing position, it lifts the ribbon located between the mounting cylinder and the recycling cylinder to a position close to the printing paper, and when in the retracted position, it moves away from the ribbon located between the mounting cylinder and the recycling cylinder. The reset elastic element is located between the second rotating shaft and the housing, and the driving surface abuts against the pressure plate so that when the driving cam rotates, it drives the print head to switch from the retracted position to the printing position.

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