CN116141832A - Printer with a printing mechanism - Google Patents

Abstract

The invention relates to a printer, which comprises a shell, a carbon tape box, a printing head module, an adjusting elastic piece, a limiting component and a driving component, wherein the shell is provided with a first fixing part and a second fixing part; the carbon ribbon box comprises a box body, a mounting cylinder and a recovery cylinder, wherein the box body is detachably arranged in the shell, the mounting cylinder is rotationally arranged on the box body, the recovery cylinder is rotationally arranged on the box body and is radially arranged with the mounting cylinder at intervals, and a matching part is arranged on the recovery cylinder; the printing head module is rotationally arranged in the shell and positioned between the mounting cylinder and the recovery cylinder; the adjusting elastic piece is arranged between the box body and the mounting cylinder; the limiting component comprises a limiting part which is movably arranged on the box body and corresponds to the matching part, and the limiting part can be movably matched with the matching part; the driving component is arranged on the shell and is in driving connection with the printing head module. This scheme can be so that by the carbon ribbon that the printer head module was opened unreels to the installation section of thick bamboo again, is convenient for take out the carbon ribbon box and overhauls, improves the convenience, also avoids the carbon ribbon to appear the circumstances of fold when taking out simultaneously, and then guarantees the print quality.

Description

Printer with a printing mechanism

Technical Field

The invention relates to the technical field of printing equipment, in particular to a printer.

Background

The printing principle of the thermal transfer printer is that after the printing head is heated, the dye on the carbon tape is transferred to the printing medium, and the mode ensures that the preservation time of the printing ticket paper is far longer than that of the thermal printing paper. When the thermal transfer printing carbon tape is used, the thermal transfer printing carbon tape needs to be placed in a carbon tape box of a printer, so that a recovery shaft of the carbon tape box is driven to rotate through gear transmission in the thermal transfer printing printer, and further tape feeding is achieved.

For example, patent CN 109177515A discloses a carbon tape erasing and soot cleaning thermal transfer printer in which a print head forces a carbon tape between a carbon tape driving roller i and a carbon tape driving roller ii to open and to restrict the portion of the carbon tape to a position close to a printing paper during printing. And the rubber roller rotates along the a1 direction, the rubber roller rotates to generate a2 direction friction force on the printing paper, meanwhile, the printing paper moves to generate a2 direction friction force on the carbon belt, the printing paper and the carbon belt move along the a2 direction at the same speed, and the designated content is printed on the printing paper.

However, when a failure occurs in the middle of printing, since the carbon tape in the carbon tape cassette (the carbon tape driving roller i and the carbon tape driving roller ii) is opened by the print head, it is unfavorable for the user to take out the carbon tape cassette from the printer housing for maintenance, the operation is relatively inconvenient, and the opened carbon tape is easily wrinkled when taken out, which affects the printing quality.

Disclosure of Invention

In view of the foregoing, it is necessary to provide a printer for solving the technical problems that the prior art is inconvenient to take out the carbon tape box for maintenance when the printer fails during printing, and the opened carbon tape is easy to fold when taken out, thereby affecting the printing quality.

The present invention provides a printer, comprising:

a housing;

the carbon ribbon box comprises a box body, an installation cylinder and a recovery cylinder, wherein the box body is detachably arranged in the shell, the installation cylinder is rotationally arranged in the box body and used for sleeving a carbon ribbon roll to be used and distributing the carbon ribbon during forward rotation, and the recovery cylinder is rotationally arranged in the box body and radially arranged with the installation cylinder at intervals and used for rolling up the carbon ribbon distributed from the installation cylinder during forward rotation and is provided with a matching part;

the printing head module is rotationally arranged in the shell and positioned between the mounting cylinder and the recovery cylinder so as to have a retracted position and a printing position on a rotational stroke, and is used for lifting a carbon belt positioned between the mounting cylinder and the recovery cylinder to a position close to printing paper when in the printing position and is used for keeping away from the carbon belt positioned between the mounting cylinder and the recovery cylinder when in the retracted position;

the adjusting elastic piece is arranged between the box body and the mounting cylinder and is used for enabling the mounting cylinder to have a reverse rotation trend when the carbon tape is dispensed;

the limiting assembly comprises a limiting part movably arranged on the box body and corresponding to the matching part, and the limiting part can move to be matched with the matching part so as to limit the reverse rotation of the recovery cylinder; the method comprises the steps of,

the driving assembly is arranged on the shell, is in driving connection with the printing head module and is used for driving the printing head module to switch between the folding position and the printing position.

Optionally, the box body is provided with a mounting shaft core corresponding to the mounting cylinder, the mounting shaft core is arranged in an extending manner along the axis direction of the mounting cylinder, and the mounting cylinder is rotationally sleeved outside the mounting shaft core;

the adjusting elastic piece comprises a enclasping section and an adjusting section connected to the enclasping section, the enclasping section is enclasped at the periphery of the installation shaft core and can rotate around the axis of the installation shaft core under the driving of external force, the adjusting section is annularly arranged outside the installation shaft core, and one end far away from the enclasping section is connected to the inner wall of the installation cylinder, so that the installation cylinder has a reverse rotation trend when dispensing a carbon ribbon.

Optionally, the enclasping section is an enclasping spring enclasping the installation shaft core, and the enclasping spring can rotate around the axis of the installation shaft core under the driving of external force so as to slide relative to the installation shaft core;

the adjusting section is an adjusting spring arranged on the periphery of the installation shaft core in a spacing ring mode, one end of the adjusting spring is connected with the enclasping spring, and the other end of the adjusting spring is connected with the inner wall of the installation cylinder.

Optionally, a stop block is convexly arranged on the inner wall of the mounting cylinder, and the rear side wall of the stop block in the forward rotation direction of the mounting cylinder is a stop side wall;

one end of the adjusting spring, which is far away from the enclasping spring, can be abutted against the stop side wall so as to limit the adjusting spring to move relative to the mounting cylinder.

Optionally, the matching part is a plurality of ratchets which are annularly arranged on the periphery of the recovery cylinder, and the ratchets are positioned at one end of the recovery cylinder in the axial direction;

the limiting part comprises a clamping arm matched with the ratchets, the clamping arm is movably arranged on the box body and is provided with a limiting position inserted between two adjacent ratchets and a releasing position separated from the ratchets, and when the clamping arm is positioned at the limiting position, the recovery cylinder can rotate forward and limit the recovery cylinder to rotate reversely.

Optionally, the box body comprises a shell, a first outer cylinder and a second outer cylinder, the axial directions of the first outer cylinder and the second outer cylinder are the same, the first outer cylinder and the second outer cylinder are arranged at intervals along the radial direction of the first outer cylinder, one ends of the first outer cylinder and the second outer cylinder are respectively communicated with the inner cavity of the shell and are positioned on the same side of the shell, and openings for the carbon tape to pass through are respectively formed in one side of the first outer cylinder, which is opposite to the second outer cylinder;

the installation cylinder is arranged in the first outer cylinder, the recovery cylinder is arranged in the second outer cylinder, and the ratchet is positioned at one end of the recovery cylinder, which is close to the shell;

the limiting part also comprises a rotating arm connected with the clamping arm in an included angle, the rotating arm is arranged on the inner wall of the shell in a radial rotating manner around the recovery cylinder and is positioned on one side, close to the recovery cylinder, of the inner wall of the shell, and the clamping arm is driven to move between the limiting position and the releasing position during rotation.

Optionally, the limiting component further comprises a limiting elastic piece arranged between the inner wall of the shell and the rotating arm, and the limiting elastic piece is used for driving the rotating arm to move so as to drive the clamping arm to reset from the unlocking position to the limiting position.

Optionally, the driving assembly includes:

the first rotating shaft is rotationally arranged in the shell;

the driving cam is arranged on the first rotating shaft, at least one driving surface for driving the printing head module to rotate is formed at the end part of the driving cam, which is away from the first rotating shaft, and the driving surface is used for driving the printing head module to switch from the retracted position to the printing position when the driving cam is driven by the first rotating shaft to rotate; the method comprises the steps of,

and the reset elastic piece is arranged between the printing head module and the shell, so that when the driving surface is separated from the printing head module, the printing head module is driven to reset from the printing position to the folding position.

Optionally, two driving surfaces are provided, and the two driving surfaces are sequentially connected along the circumferential direction of the driving cam and are used for sequentially driving the printing head module to rotate.

Optionally, the printhead module includes:

the second rotating shaft is rotationally arranged in the shell; the method comprises the steps of,

the printing head structure comprises a printing head, a pressing and resisting plate and a pressing and resisting elastic piece arranged between the printing head and the pressing and resisting plate, wherein the printing head is arranged between the second rotating shaft and the mounting cylinder and the recovery cylinder, so that when the printing position is adopted, a carbon belt between the mounting cylinder and the recovery cylinder is lifted to a position close to printing paper, and when the printing position is adopted, the printing head is far away from the carbon belt between the mounting cylinder and the recovery cylinder;

the reset elastic piece is arranged between the second rotating shaft and the shell, and the driving surface is abutted against the pressing and resisting plate so as to drive the printing head to be switched from the retracted position to the printing position when the driving cam rotates.

Compared with the prior art, in normal printing of the printer, the driving assembly drives the printing head module to rotate from the storage position to the printing position so as to lift the carbon ribbon between the mounting cylinder and the recovery cylinder to a position close to printing paper, and further printing action is performed.

When the printer breaks down and needs to be taken out for maintenance, the limiting part is moved to a position matched with the matching part, so that the reverse rotation of the recovery cylinder is limited, and the problem that the recovery cylinder reversely rotates to loosen the carbon tape is avoided. The driving assembly drives the printing head module to rotate from a printing position to a retracting position, so that the printing head module is separated from and avoids the carbon tape between the mounting cylinder and the recovery cylinder; at this time, because the adjustment elastic component makes the installation section of thick bamboo have the trend of reverse rotation, and the carbon ribbon between installation section of thick bamboo and the recovery section of thick bamboo loses the jacking force of printing head module for the installation section of thick bamboo can reverse rotation in order to rewind the carbon ribbon between its and the recovery section of thick bamboo, thereby make by the carbon ribbon of printing head module expansion recoiling to the installation section of thick bamboo again. So, be convenient for take out the carbon ribbon box and overhaul, improve the convenience, also avoid the carbon ribbon to appear the circumstances of fold when taking out simultaneously, and then guarantee to print the quality.

The foregoing description is only an overview of the present invention, and is intended to provide a better understanding of the present invention, as it is embodied in the following description, with reference to the preferred embodiments of the present invention and its details set forth in the accompanying drawings. Specific embodiments of the present invention are given in detail by the following examples and the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:

FIG. 1 is a schematic diagram of a printer according to an embodiment of the present invention;

FIG. 2 is a schematic view of the carbon ribbon cartridge of FIG. 1;

FIG. 3 is a schematic cross-sectional view of the printer of FIG. 1 taken along the A-A plane;

FIG. 4 is a schematic view of the mounting hub, the adjustment spring and the mounting barrel (in cross section) of FIG. 3;

FIG. 5 is a schematic view of the adjusting elastic member of FIG. 4 wound on the mounting shaft core;

FIG. 6 is a schematic view of the structure of the adjusting elastic member in FIG. 5;

FIG. 7 is a schematic view of the carbon ribbon cartridge (not shown) of FIG. 2;

FIG. 8 is an enlarged schematic view at B in FIG. 7;

FIG. 9 is a schematic structural view of the limiting portion in FIG. 7;

FIG. 10 is an enlarged schematic view of FIG. 7 at C;

FIG. 11 is an enlarged schematic view of FIG. 2D;

FIG. 12 is a schematic view of a portion of the enclosure of FIG. 7 in an enlarged manner;

FIG. 13 is a schematic view of the drive structure of FIG. 1;

FIG. 14 is a schematic cross-sectional view of the recovery cylinder of FIG. 3;

FIG. 15 is a schematic view of the driving assembly (not shown) and the housing of FIG. 1;

FIG. 16 is a schematic view of the printhead module, return spring and housing of FIG. 1;

FIG. 17 is a schematic view of the printhead module and reset spring of FIG. 16;

fig. 18 is a schematic structural view of the elastic member and the housing in fig. 1.

Reference numerals illustrate:

100-printer, 1-housing, 1 a-yielding slot, 1 b-via, 1 c-yielding slot, 11-pop-up spring, 2-cartridge, 21-cartridge, 211-housing, 211 a-yielding slot, 2111-spacing structure, 2111 a-spacing slot, 212-first outer barrel, 213-second outer barrel, 22-mounting barrel, 221-stop, 2211-stop sidewall, 23-recovery barrel, 231-mating portion, 2311-ratchet, 232-recovery hub, 2321-stop block, 233-recovery outer barrel, 2331-cartridge, 234-recovery gear, 24-mounting hub, 241-guide ring, 3-printhead module, 31-second rotating shaft, 32-printhead, 33-pressure-retaining plate, 34-pressure-retaining spring, 4-adjustment spring, 41-holding section, 42-adjustment section, 5-retaining assembly, 51-retaining portion, 511-retaining arm, 512-rotating arm, 513-driving projection, 52-retaining spring, 53-mounting seat, 54-mounting seat, 6-61-driving gear, 63-driving gear, 81-driving roller, 81-driving gear, 81, 3-driving roller, 63-driving gear, 81.

Detailed Description

Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form a part hereof, and together with the description serve to explain the principles of the invention, and are not intended to limit the scope of the invention.

Referring to fig. 1 to 8, the printer 100 includes a housing 1, a carbon ribbon cartridge 2, a printhead module 3, an adjusting elastic member 4, a limiting member 5 and a driving member 6; the carbon ribbon cartridge 2 comprises a cartridge body 21, an installation cylinder 22 and a recovery cylinder 23, wherein the cartridge body 21 is detachably arranged in the shell 1, the installation cylinder 22 is rotatably arranged in the cartridge body 21 and is used for sleeving a carbon ribbon roll to be used and distributing the carbon ribbon during forward rotation, the recovery cylinder 23 is rotatably arranged in the cartridge body 21 and is radially arranged with the installation cylinder 22 at intervals, and is used for winding the carbon ribbon distributed from the installation cylinder 22 during forward rotation and is provided with a matching part 231; the printing head module 3 is rotatably arranged in the shell 1 and is positioned between the mounting cylinder 22 and the recovery cylinder 23 so as to have a retracted position and a printing position on a rotating stroke, and the printing head module 3 is used for lifting the carbon tape positioned between the mounting cylinder 22 and the recovery cylinder 23 to a position close to printing paper when in the printing position and is used for keeping away from the carbon tape positioned between the mounting cylinder 22 and the recovery cylinder 23 when in the retracted position; the adjusting elastic piece 4 is arranged between the box body 21 and the mounting cylinder 22, so that the mounting cylinder 22 has a reverse rotation trend when the carbon tape is dispensed; the limiting component 5 comprises a limiting part 51 movably arranged on the box body 21 and corresponding to the matching part 231, and the limiting part 51 can move to be matched with the matching part 231 so as to limit the reverse rotation of the recovery cylinder 23; the driving component 6 is disposed in the housing 1 and is in driving connection with the printhead module 3, so as to drive the printhead module 3 to switch between a retracted position and a printing position.

In the printer 100 provided by the invention, during normal printing, the driving component 6 drives the printing head module 3 to rotate from the storage position to the printing position, so that the carbon ribbon between the mounting cylinder 22 and the recovery cylinder 23 is lifted to a position close to printing paper, and then printing action is performed.

When the printer 100 fails and the carbon ribbon cartridge 2 needs to be taken out for maintenance, the limiting part 51 is moved to a position matched with the matching part 231, so that the reverse rotation of the recovery cylinder 23 is limited, and the reverse rotation of the recovery cylinder 23 is prevented to release the carbon ribbon. The driving component 6 drives the printing head module 3 to rotate from the printing position to the stowing position, so that the printing head module 3 is separated from and avoids the carbon tape between the mounting cylinder 22 and the recovery cylinder 23; at this time, since the elastic member 4 is adjusted so that the mounting cylinder 22 has a tendency to rotate reversely, and the carbon tape between the mounting cylinder 22 and the recovery cylinder 23 loses the lifting force of the printhead module 3, the mounting cylinder 22 can rotate reversely to rewind the carbon tape between it and the recovery cylinder 23, so that the carbon tape stretched by the printhead module 3 is rewound onto the mounting cylinder 22 again. So, be convenient for take out carbon ribbon box 2 and overhaul, improve the convenience, also avoid the carbon ribbon to appear the circumstances of fold when taking out simultaneously, and then guarantee to print the quality.

It should be understood that the mounting cylinder 22 and the recovery cylinder 23 rotate about respective axes, and that the axial directions of both are the same. Further, the mounting cylinder 22 is used to dispense the carbon ribbon when rotated in the forward direction and to wind up the carbon ribbon when rotated in the reverse direction. The recovery drum 23 is used to wind up the carbon ribbon during forward rotation and dispense the carbon ribbon during reverse rotation. Specifically, referring to fig. 3, in the present embodiment, the forward rotation direction of the recovery cylinder 23 and the mounting cylinder 22 is counterclockwise.

Further, referring to fig. 4 to 6, the box 21 is provided with a mounting shaft core 24 corresponding to the mounting cylinder 22, the mounting shaft core 24 extends along the axial direction of the mounting cylinder 22, and the mounting cylinder 22 is rotatably sleeved outside the mounting shaft core 24; the adjusting elastic piece 4 comprises a holding section 41 and an adjusting section 42 connected to the holding section 41, the holding section 41 is encircling the periphery of the installation shaft core 24 and can rotate around the axis of the installation shaft core 24 under the driving of external force, the adjusting section 42 is encircling the installation shaft core 24, and one end far away from the holding section 41 is connected to the inner wall of the installation cylinder 22, so that the installation cylinder 22 has a reverse rotation trend when dispensing carbon tapes. In this embodiment, the recovery cylinder 23 synchronously drives the installation cylinder 22 to rotate forward when the carbon ribbon is rolled up, so that the installation cylinder 22 dispenses the carbon ribbon; at this time, the enclasping section 41 rotates around the axis of the installation shaft core 24 to slide relative to the installation shaft core 24, so that the installation cylinder 22 is not affected to normally dispense the carbon ribbon, and the enclasping section 41 and the adjusting section 42 accumulate elastic potential energy during the forward rotation of the installation cylinder 22, so that the installation cylinder 22 has a tendency to rotate reversely.

Thus, the carbon tape between the mounting cylinder 22 and the recovery cylinder 23 always has tight damping feeling while the normal winding of the carbon tape by the recovery cylinder 23 is not affected, and the tape is ensured not to be wrinkled in the printing process. And when the printing position is moved back to the printing head module 3, the enclasping section 41 and the adjusting section 42 can drive the mounting cylinder 22 to reversely rotate, so that the mounting cylinder 22 can rewind the carbon tape jacked up by the printing head module 3 between the mounting cylinder and the recycling cylinder 23, and even if the carbon tape box 2 is taken out of the shell 1, the tightness of the carbon tape can be ensured, loose folds of the carbon tape can be effectively avoided, and the carbon tape box 2 is taken out from the shell 1 conveniently, and convenience is improved.

In addition, in the present embodiment, the holding section 41 and the adjusting section 42 are made of elastic materials, and the adjusting section 42 gradually expands when the mounting cylinder 22 dispenses the carbon ribbon, so as to drive the holding section 41 to expand, so as to reduce the friction between the holding section 41 and the mounting shaft core 24. Specifically, the hugging section 41 goes through both the initial state and the equilibrium state when expanding. In the initial state, the rewinding force of the clasping section 41 gradually increases from 0 to F1; and in the balanced state, the enclasping section 41 releases the mounting shaft core 24, the friction force between the enclasping section 41 and the mounting shaft core 24 is reduced, and the rewinding force is equal to the difference value between the elastic force of the supply end and F1.

Further, the enclasping section 41 is an enclasping spring enclasping the periphery of the installation shaft core 24, and the enclasping spring can rotate around the axis of the installation shaft core 24 under the driving of external force so as to slide relative to the installation shaft core 24; the adjusting section 42 is an adjusting spring arranged around the outer periphery of the mounting shaft core 24 in a spacing ring manner, one end of the adjusting spring is connected with the holding spring, and the other end of the adjusting spring is connected with the inner wall of the mounting cylinder 22. In this scheme, through the cooperation of adjusting spring and cohesion spring, realize the automatic rollback of carbon ribbon, it is relatively simple and convenient to operate, and compact structure, simple, save the cost. Specifically, the inner diameter of the cinching spring is smaller than the inner diameter of the adjustment spring to facilitate rotation of the mounting barrel 22 relative to the mounting hub 24.

Further, the inner wall of the mounting cylinder 22 is provided with a stopper 221, and the rear side wall of the stopper 221 in the forward rotation direction of the mounting cylinder 22 is a stopper side wall 2211; one end of the adjusting spring far away from the holding spring can be abutted against the stop side wall 2211 so as to limit the movement of the adjusting spring relative to the mounting cylinder 22. In this scheme, when the installation section of thick bamboo 22 rotates in order to dispense the carbon ribbon, the one end that the adjusting spring kept away from the enclasping spring supports tightly in keeping off side wall 2211 to avoid the adjusting spring to slide for the installation section of thick bamboo 22, and then compel the adjusting spring and can expand, and then drive enclasping spring expansion.

Further, a plurality of stoppers 221 are provided, and the plurality of stoppers 221 are provided at intervals along the circumferential direction of the mounting cylinder 22. In the present embodiment, 3 stoppers 221 are provided. In this embodiment, a plurality of stoppers 221 are disposed at intervals to facilitate the adjustment of the spring and any of the stopping side walls 2211, thereby facilitating assembly and improving the strength of the mounting cylinder 22. Meanwhile, the adjusting rotation stroke of the adjusting spring during installation is shortened, so that the assembly is more convenient.

To avoid the holding spring and the adjusting spring moving along the axial direction of the mounting shaft 24 and disengaging from the stop side wall 2211, in the present embodiment, the stop 221 is disposed along the axial direction of the mounting cylinder 22. In this way, even if the clasping spring and the adjusting spring move in the axial direction of the mounting shaft 24, the end of the adjusting spring away from the clasping spring can always abut against the stop side wall 2211.

Specifically, the stop side wall 2211 is disposed obliquely from the inner end to the outer end toward the opposite side. In this embodiment, the stop 221 is configured in a dovetail manner to further avoid the adjustment spring from passing over the stop side wall 2211, so that the stop 221 can stably cooperate with the adjustment spring. Correspondingly, one end of the adjusting spring abutting against the stop side wall 2211 includes a connecting section extending in the radial direction of the mounting cylinder 22, and an extending section connected to the connecting section and extending in the axial direction of the mounting cylinder 22.

Further, referring to fig. 7 to 9, the engaging portion 231 is a plurality of ratchet teeth 2311 circumferentially disposed around the outer periphery of the recovery cylinder 23, and the plurality of ratchet teeth 2311 are located at one end of the recovery cylinder 23 in the axial direction thereof; the limiting portion 51 includes a clamping arm 511 matched with the ratchet 2311, the clamping arm 511 is movably arranged on the box 21 to have a limiting position inserted between two adjacent ratchet 2311 and a releasing position separated from the ratchet 2311, and when the clamping arm 511 is at the limiting position, the recovery cylinder 23 can rotate forward and limit the recovery cylinder 23 to rotate reversely. In this embodiment, the clamping arm 511 has a limiting position and a releasing position, and when the clamping arm 511 is at the limiting position, the clamping arm is clamped between two corresponding adjacent ratchets 2311, so that the recovery cylinder 23 can only rotate forward to roll up the carbon ribbon, but not rotate reversely, and the carbon ribbon can be recovered and tightened under the cooperation of the adjusting elastic member 4.

And the catch arm 511 is disengaged from the ratchet 2311 at the de-limit position so that the recovery cylinder 23 can be reversely rotated. Thus, when the printer 100 is abnormal, causing the unused carbon tape to be wound on the recovery cylinder 23, the carbon tape cassette 2 can be taken out from the printer 100, and the clip arm 511 is moved to the unqualified position that is separated from the ratchet 2311, so that the recovery cylinder 23 can be reversely rotated, and the mounting outer cylinder is reversely rotated, so that the unused carbon tape on the recovery cylinder 23 is reversely rewound on the mounting cylinder 22; after the unused carbon strips are rewound by the mounting cylinder 22, the clamping arms 511 are moved to the limiting positions, so that the waste of the carbon strips is avoided, the utilization rate of the carbon strips is improved, and the device is simple and reliable in structure and saves cost.

Further, the box 21 includes a housing 211, a first outer cylinder 212 and a second outer cylinder 213, the first outer cylinder 212 and the second outer cylinder 213 are in the same axial direction and are radially spaced apart from each other, one ends of the first outer cylinder 212 and the second outer cylinder 213 are respectively communicated with the inner cavity of the housing 211 and are positioned at the same side of the housing 211, wherein, openings for the carbon tape to pass through are respectively formed at the opposite sides of the first outer cylinder 212 and the second outer cylinder 213; 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 ratchet 2311 is positioned at one end of the recovery cylinder 23 close to the housing 211; the limiting portion 51 further includes a rotating arm 512 connected to the clamping arm 511 at an included angle, where the rotating arm 512 rotates around the radial direction of the recovery cylinder 23 and is disposed on the inner wall of the housing 211 and is located on one side of the inner wall of the housing 211 near the recovery cylinder 23, so as to drive the clamping arm 511 to move between a limiting position and a releasing position during rotation.

In this embodiment, the first outer cylinder 212 and the second outer cylinder 213 are disposed to reduce the space occupied by the carbon ribbon cartridge 2 in the printer 100, and improve the space utilization of the printer 100. Meanwhile, the rotation of the rotating arm 512 drives the clamping arm 511 to move, so that the space of the housing 211 in the arrangement direction of the first outer cylinder 212 and the second outer cylinder 213 is fully utilized, the space utilization rate of the housing 211 is improved, and the whole structure is more compact. Specifically, when the rotating arm 512 rotates, the clamping arm 511 can be driven to extend into the second outer cylinder 213 to be clamped between two corresponding adjacent ratchets 2311; and simultaneously, the clamping arm 511 can be driven to be separated from the ratchet 2311, so that the recovery cylinder 23 can rotate in two directions.

Specifically, referring to fig. 10, the limiting assembly 5 further includes a limiting elastic member 52 disposed between the inner wall of the housing 211 and the rotating arm 512, where the limiting elastic member 52 is configured to drive the rotating arm 512 to move, so as to drive the clamping arm 511 to return from the releasing position to the limiting position. Thus, after the printer 100 is abnormal and resets the unused carbon ribbon, the rotating arm 512 is driven by the limiting elastic member 52 to drive the clamping arm 511 to reset from the release position to the limiting position, without manual driving, so that convenience is improved. In this embodiment, the limiting elastic member 52 is a spring.

Specifically, referring to fig. 11 and 12, an avoidance opening 211a is formed on the inner wall of the housing 211 corresponding to the rotating arm 512, and the avoidance opening 211a is located on one side of the inner wall of the housing 211 close to the recovery cylinder 23; the rotating arm 512 is provided with a driving protrusion 513 protruding toward the avoiding opening 211a, and the driving protrusion 513 extends out of the avoiding opening 211a from the inside of the housing 211. In this scheme, when needing to drive card arm 511 to the unlimited position, the user can press the drive protruding 513 that is located outside dodging mouthful 211a for drive protruding 513 is to the activity of shell 211 internal movement, and then makes the rotation arm 512 correspond the rotation, in order to drive card arm 511 from spacing position activity to the unlimited position, simple structure is compact, and the user operation of being convenient for improves user experience.

Further, the limiting assembly 5 further comprises a mounting seat 53 protruding from the inner wall of the housing 211, wherein the mounting seat 53 is located at one side of the inner wall of the housing 211, which is close to the recovery cylinder 23, and corresponds to the rotating arm 512; one of the rotating arm 512 and the mounting seat 53 is 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, and the structure is simple and reliable. Specifically, in this embodiment, two mounting seats 53 are oppositely disposed, the two mounting seats 53 are located at two sides corresponding to the rotating arm 512, and each mounting seat 53 is provided with a shaft hole along a radial direction of the recovery cylinder 23, the corresponding rotating arm 512 is provided with a rotating shaft, and the rotating shaft is disposed in the shaft hole in a penetrating manner, so as to realize rotation of the rotating arm 512.

Specifically, the limiting assembly 5 further includes two baffles 54 protruding from the inner wall of the housing 211, where the two baffles 54 are clamped on two 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 two baffles 54 limit the axial movement of the rotating arm 512 along the rotating shaft, that is, prevent the clamping arm 511 from moving along the radial direction of the recovery cylinder 23, so that the clamping arm 511 and the ratchet 2311 are more stably matched.

Further, the housing 211 includes a base, and a cover body detachably covering the base, and the cover body and the base 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 disposed on the inner wall of the base. In this embodiment, the housing 211 is detachably connected to the base and the cover, the first outer cylinder 212 and the second outer cylinder 213 are respectively connected to the base and are communicated with the inner cavity enclosed by the base and the cover, and the rotating arm 512 is disposed on the inner wall of the base, so that the user can conveniently view the housing when the cooperation between the limiting portion 51 and the cooperation portion 231 is abnormal.

Furthermore, the outer side wall of the base is concavely provided with a clamping groove; the lid includes main part and encloses the extension of locating main part one side, and the inboard of extension corresponds the draw-in groove protruding to be equipped with the card protruding, and when the base was located to the lid, the draw-in groove can be located to the card protruding card to make lid detachably lid locate the base. In the embodiment, when the cover body is covered on the base, one end of the base, which is far away from the first cylinder body and the second cylinder body, stretches into the extension part, and meanwhile, the clamping convex clamp is arranged in the clamping groove, so that the cover body is covered on the base; when the cover body is required to be disassembled, the user applies external force to drive the clamping protrusions to separate from the clamping grooves, and the structure is simple and reliable.

Further, a guide ring 241 is provided around the outer circumference of the mounting shaft 24, and one end of the guide ring 241 away from the mounting shaft 24 is slidably abutted against the inner wall of the mounting cylinder 22. In this scheme, when the installation cylinder 22 rotates around the axis of the installation shaft core 24, the inner wall of the installation cylinder 22 is slidably connected with the outer periphery of the guide ring 241, so that the axis of the installation cylinder 22 is prevented from deviating from the axis of the installation shaft core 24, and the rotation of the installation cylinder 22 is smoother and more stable.

Further, referring to fig. 1 and 13, the printer 100 further includes a paper feeding rubber roller 7 and a driving structure 8 disposed in the housing 1, the paper feeding rubber roller 7 rotates around an axis thereof, and an axis direction thereof is the same as an axis direction of the recovery cylinder 23, and a paper feeding gear 71 is disposed at one end of the paper feeding rubber roller 7; the driving structure 8 is in driving connection with the recovery cylinder 23 and is used for driving the recovery cylinder 23 to rotate. Specifically, the recovery cylinder 23 is provided with a recovery gear 234 corresponding to the paper feed gear 71; the driving structure 8 includes a driving motor 81, and a transmission gear 82 engaged between the paper feed gear 71 and the recovery gear 234, wherein a driving gear is provided on an output shaft of the driving motor 81, and a transition gear 83 is engaged between the driving gear and the paper feed gear 71.

In this embodiment, when the driving motor 81 works, the driving gear on the output shaft drives the transition gear 83, the paper feeding gear 71, the transmission gear 82 and the recovery gear 234 in sequence, so that the paper feeding rubber roller 7 and the recovery cylinder 23 are simultaneously driven to rotate by one driving motor 81, thereby saving cost, enabling the overall structure to be more compact and the transmission precision to be higher; in addition, the paper feeding rubber roller 7 and the carbon belt can synchronously rotate, so that the step loss and the stretching in the printing process are avoided. In the present embodiment, two transition gears 83 are provided, and each transition gear 83 and each transmission gear 82 are provided with a main gear and a sub gear respectively, so as to realize the rotation of the paper feeding rubber roller 7 and the recovery cylinder 23. In the present embodiment, the cartridge 21, the paper feed roller 7, and the driving structure 8 are provided in correspondence with the housing 1 of the printer 100.

Still further, referring to fig. 14, the recovery cylinder 23 includes a recovery shaft core 232 rotatably penetrating through the box 21, and a recovery outer cylinder 233 rotatably sleeved outside the recovery shaft core 232, wherein the recovery shaft core 232 is circumferentially provided with a plurality of limiting blocks 2321 at intervals, the inner wall of the recovery outer cylinder 233 is convexly provided with a clamping block 2331 corresponding to the limiting block 2321, and the clamping block 2331 is clamped between two adjacent limiting blocks 2321; wherein, retrieve gear 234 locates and retrieves axle core 232 one end. In this embodiment, the recovery cylinder 23 is set to a form of a recovery shaft core 232 and a recovery outer cylinder 233, so that when the recovery outer cylinder 233 is used for winding a carbon ribbon, the recovery outer cylinder 233 is convenient to take down from the recovery shaft core 232 through the cooperation of the limiting block 2321 and the clamping block 2331, and replacement of the recovery outer cylinder 233 is facilitated, and convenience is improved.

It should be noted that, since the recovery outer cylinder 233 is a blind process during the process of being mounted in the printer 100, the front end of the recovery outer cylinder 233 is prevented from being biased downward due to the influence of its own weight, which may cause misalignment with the recovery shaft 232. In this embodiment, a guiding angle is provided at an end of the recovery shaft core 232 extending into the recovery shaft core 232, so that when the recovery shaft core 232 is abutted to the recovery shaft core 233, the guiding angle can perform guiding correction on the recovery shaft core 233 to guide the recovery shaft core 232 to be abutted to the recovery shaft core 233.

Specifically, the plurality of the clamping blocks 2331 are provided, and the plurality of clamping blocks 2331 are arranged at intervals along the circumferential direction of the recovery outer cylinder 233. It should be noted that, in an embodiment, a clamping gap is formed between two adjacent limiting blocks 2321, and a plurality of clamping blocks 2331 are disposed in one-to-one correspondence with the plurality of clamping gaps, so that the outer recovery cylinder 233 and the recovery shaft core 232 are more stably matched. In the present embodiment, three clamping blocks 2331 are provided, and six clamping gaps are provided, and three clamping blocks 2331 are clamped in the corresponding clamping gaps at intervals.

Further, referring to fig. 15 to 17, the driving assembly 6 includes 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 shell 1; the driving cam 62 is disposed on the first rotating shaft 61, and at least one driving surface 621 for driving the printhead module 3 to rotate is formed at an end of the driving cam 62 facing away from the first rotating shaft 61, and when the first rotating shaft 61 drives the driving cam 62 to rotate, the driving surface 621 is used for driving the printhead module 3 to switch from the retracted position to the printing position; the reset elastic member 63 is disposed between the printhead module 3 and the housing 1, so as to drive the printhead module 3 to reset from the printing position to the retracted position when the driving surface 621 is separated from the printhead module 3. Specifically, two driving surfaces 621 are provided, and the two driving surfaces 621 are sequentially connected in the circumferential direction of the driving cam 62 for sequentially driving the printhead die set 3 to rotate.

In this scheme, two driving surfaces 621 all can drive and print head module 3 and rotate certain angle, and first driving surface 621 mainly drives and prints head module 3 and rotate, and second driving surface 621 drives and prints head module 3 on the one hand and rotate, and on the other hand can print head module 3 butt in paper feed rubber roll 7, is convenient for with printing head module 3 stable locking, is favorable to the going on of print job. After printing, the driving cam 62 rotates until the driving surface 621 is separated from the printhead module 3, and the reset elastic member 63 can drive the printhead module 3 to automatically reset to the printing position to the retracted position.

Further, the printhead module 3 includes a second rotating shaft 31 and a printhead 32 structure; the second rotating shaft 31 is rotatably arranged in the shell 1; the print head 32 comprises a print head 32, a pressing and resisting plate 33 and a pressing and resisting elastic piece 34 arranged between the print head 32 and the pressing and resisting plate 33, wherein the print head 32 is arranged between the mounting cylinder 22 and the recovery cylinder 23 and is used for lifting a carbon belt arranged between the mounting cylinder 22 and the recovery cylinder 23 to a position close to printing paper when in a printing position and used for keeping away from the carbon belt arranged between the mounting cylinder 22 and the recovery cylinder 23 when in a retracting position; the reset elastic member 63 is disposed 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 printhead 32 to switch from the retracted position to the printing position when the driving cam 62 rotates.

In this embodiment, when the print head 32 is in the printing position, the elastic member 34 is pressed to be in a compressed state, and the print head 32 can be further locked stably, so that the locking effect is better; when the printhead 32 is in the retracted position, the return spring 63 is in the extended state, which facilitates adjustment and maintenance of the printhead 32 to meet the needs of the application. In this embodiment, the return elastic member 63 is a torsion spring, and the pressing elastic member 34 is a spring.

In order to further lock the printhead module 3 stably, an end of the driving cam 62 facing away from the first rotating shaft 61 is formed with an abutment surface, and the two driving surfaces 621 and the abutment surface are sequentially connected along the circumferential direction of the driving cam 62, and when the printhead 32 is in the printing position, the abutment surface is used for pressing the pressing plate 33 to press the elastic member 34 in a compressed state. When the print head 32 is at the printing position, the abutting surface is arranged, and the compression amount of the pressing elastic piece 34 can be increased through the extrusion action of the abutting surface, so that the print head module 3 can be stably locked, and the locking effect is better.

The two driving surfaces 621 and the abutting surfaces are sequentially rounded excessively, so that the driving process of the printhead module 3 is more stable, and the two driving surfaces 621 and the abutting surfaces respectively correspond to one stroke, therefore, the second rotating shaft 31 corresponds to three stroke positions, and the position of the printhead module 3 is convenient to adjust.

In order to make the structure between the parts of the printhead module 3 more compact, a clamping groove is formed at one end of the printhead 32 near the pressing plate 33, a clamping portion for clamping the clamping groove is formed at one end of the pressing plate 33 near the printhead 32, and the clamping portion can move in the clamping groove along the expansion and contraction direction of the pressing elastic member 34 so that the pressing plate 33 moves relative to the printhead 32. When the driving assembly 6 drives the printing head 32 to switch between the printing position and the folding position, the clamping groove and the clamping part are arranged, so that the structure among all parts of the printing head module 3 is more compact, and the printing head module 3 is better in locking effect.

Further, a yielding groove 1a is formed in the bottom of the casing 1, the driving assembly 6 further comprises a driving handle 64, one end of the driving handle 64 is arranged on the second rotating shaft 31, the other end of the driving handle 64 extends out of the yielding groove 1a, the driving handle 64 is used for driving the second rotating shaft 31 to rotate, and then the printing head 32 can be driven to rotate from a retracted position to a printing position.

Further, the housing 211 of the carbon ribbon cartridge 2 is provided with a limit structure 2111 corresponding to the driving handle 64, and the limit structure 2111 is formed with a limit groove 2111a; meanwhile, the shell 1 of the printer 100 is provided with an avoidance groove 1c corresponding to the limit structure 2111, and through holes 1b are respectively formed in the first outer cylinder 212 and the second outer cylinder 213 corresponding to the carbon ribbon cartridge 2; the drive handle 64 is provided with a stopper protrusion 641 corresponding to the stopper protrusion 2111a, and the stopper protrusion 641 is opened to one side of the stopper protrusion 2111 a. Thus, when the carbon tape cartridge 2 is mounted, the first outer tube 212 and the second outer tube 213 are respectively aligned with the corresponding via holes 1b so as to extend into the housing 1; meanwhile, the limit structure 2111 extends into the housing 1 from the avoidance groove 1c, so that the limit groove 2111a corresponds to the stop protrusion 641. Specifically, when the print head 32 is in the retracted position, the driving handle 64 is correspondingly disposed, and at this time, the stop protrusion 641 is located outside the limit groove 2111a, so that the carbon ribbon cartridge 2 can be detached from the housing 1 of the printer 100; when the driving handle 64 drives the print head 32 at the printing position, the blocking protrusion 641 extends into the limiting groove 2111a and cooperates with the side wall of the limiting groove 2111a to limit the removal of the carbon tape cartridge 2 from the housing 1 of the printer 100. In this way, the detachable mounting of the carbon ribbon cartridge 2 and the printer 100 is realized, and the structure is simple and reliable.

In addition, referring to fig. 18, in order to facilitate the user to take out the carbon ribbon cartridge 2, a side wall of the housing 1 opposite to the via hole 1b is provided with an ejecting elastic member 11, and the ejecting elastic member 11 is disposed corresponding to the first outer cylinder 212 and/or the second outer cylinder 213. Specifically, when the first outer tube 212 and the second outer tube 213 extend into the housing 1 from the corresponding escape openings 211a, the ejection elastic member 11 is pressed, so that the ejection elastic member 11 is compressed, and the driving handle 64 is rotated to a position where the blocking boss 641 extends into the limiting groove 2111 a. Thus, when the blocking protrusion 641 is disengaged from the limiting groove 2111a, the first outer cylinder 212 and the second outer cylinder 213 are pushed out of the through hole 1b by the ejection elastic member 11, so as to be convenient for the user to take. In the present embodiment, the ejection elastic member 11 is provided as a spring. Specifically, the printer 100 further includes a base 9 detachably rotatably clamped to the housing 1, where the base 9 and the via hole 1b are located at two opposite sides of the housing 1, so as to fix the ejection elastic member 11, so as to install the ejection elastic member 11.

The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention.

Claims (10)

1. A printer, comprising:

a housing;

the carbon ribbon box comprises a box body, an installation cylinder and a recovery cylinder, wherein the box body is detachably arranged in the shell, the installation cylinder is rotationally arranged in the box body and used for sleeving a carbon ribbon roll to be used and distributing the carbon ribbon during forward rotation, and the recovery cylinder is rotationally arranged in the box body and radially arranged with the installation cylinder at intervals and used for rolling up the carbon ribbon distributed from the installation cylinder during forward rotation and is provided with a matching part;

the printing head module is rotationally arranged in the shell and positioned between the mounting cylinder and the recovery cylinder so as to have a retracted position and a printing position on a rotational stroke, and is used for lifting a carbon belt positioned between the mounting cylinder and the recovery cylinder to a position close to printing paper when in the printing position and is used for keeping away from the carbon belt positioned between the mounting cylinder and the recovery cylinder when in the retracted position;

the adjusting elastic piece is arranged between the box body and the mounting cylinder and is used for enabling the mounting cylinder to have a reverse rotation trend when the carbon tape is dispensed;

the limiting assembly comprises a limiting part movably arranged on the box body and corresponding to the matching part, and the limiting part can move to be matched with the matching part so as to limit the reverse rotation of the recovery cylinder; the method comprises the steps of,

the driving assembly is arranged on the shell, is in driving connection with the printing head module and is used for driving the printing head module to switch between the folding position and the printing position.

2. The printer according to claim 1, wherein the box body is provided with a mounting shaft core corresponding to the mounting cylinder, the mounting shaft core extends along the axis direction of the mounting cylinder, and the mounting cylinder is rotatably sleeved outside the mounting shaft core;

the adjusting elastic piece comprises a enclasping section and an adjusting section connected to the enclasping section, the enclasping section is enclasped at the periphery of the installation shaft core and can rotate around the axis of the installation shaft core under the driving of external force, the adjusting section is annularly arranged outside the installation shaft core, and one end far away from the enclasping section is connected to the inner wall of the installation cylinder, so that the installation cylinder has a reverse rotation trend when dispensing a carbon ribbon.

3. The printer of claim 2, wherein the hugging section is a hugging spring which is hugged on the mounting shaft core, and the hugging spring can rotate around the axis of the mounting shaft core under the driving of external force so as to slide relative to the mounting shaft core;

the adjusting section is an adjusting spring arranged on the periphery of the installation shaft core in a spacing ring mode, one end of the adjusting spring is connected with the enclasping spring, and the other end of the adjusting spring is connected with the inner wall of the installation cylinder.

4. A printer according to claim 3, wherein the inner wall of the mounting cylinder is provided with a stopper, and the rear side wall of the stopper in the forward rotation direction of the mounting cylinder is a stopper side wall;

one end of the adjusting spring, which is far away from the enclasping spring, can be abutted against the stop side wall so as to limit the adjusting spring to move relative to the mounting cylinder.

5. The printer according to claim 1, wherein the engaging portion is a plurality of ratchet teeth provided around the outer periphery of the recovery cylinder, the plurality of ratchet teeth being located at one end of the recovery cylinder in the axial direction thereof;

the limiting part comprises a clamping arm matched with the ratchets, the clamping arm is movably arranged on the box body and is provided with a limiting position inserted between two adjacent ratchets and a releasing position separated from the ratchets, and when the clamping arm is positioned at the limiting position, the recovery cylinder can rotate forward and limit the recovery cylinder to rotate reversely.

6. The printer of claim 5, wherein the cartridge comprises a housing, a first outer cylinder and a second outer cylinder, the first outer cylinder and the second outer cylinder are arranged in the same axial direction and at radial intervals, one ends of the first outer cylinder and the second outer cylinder are respectively communicated with an inner cavity of the housing and are positioned on the same side of the housing, and openings for allowing a carbon tape to pass through are respectively formed in one side of the first outer cylinder opposite to the second outer cylinder;

the installation cylinder is arranged in the first outer cylinder, the recovery cylinder is arranged in the second outer cylinder, and the ratchet is positioned at one end of the recovery cylinder, which is close to the shell;

the limiting part also comprises a rotating arm connected with the clamping arm in an included angle, the rotating arm is arranged on the inner wall of the shell in a radial rotating manner around the recovery cylinder and is positioned on one side, close to the recovery cylinder, of the inner wall of the shell, and the clamping arm is driven to move between the limiting position and the releasing position during rotation.

7. The printer of claim 6, said spacing assembly further comprising a spacing elastic member disposed between an inner wall of said housing and said rotating arm, said spacing elastic member being configured to drive said rotating arm to move so as to drive said clamping arm to return from said releasing position to said spacing position.

8. The printer of claim 1, wherein the drive assembly comprises:

the first rotating shaft is rotationally arranged in the shell;

the driving cam is arranged on the first rotating shaft, at least one driving surface for driving the printing head module to rotate is formed at the end part of the driving cam, which is away from the first rotating shaft, and the driving surface is used for driving the printing head module to switch from the retracted position to the printing position when the driving cam is driven by the first rotating shaft to rotate; the method comprises the steps of,

and the reset elastic piece is arranged between the printing head module and the shell, so that when the driving surface is separated from the printing head module, the printing head module is driven to reset from the printing position to the folding position.

9. The printer of claim 8, wherein two of said driving surfaces are sequentially connected in a circumferential direction of said driving cam for sequentially driving said printhead die set to rotate.

10. The printer of claim 8, wherein the printhead module comprises:

the second rotating shaft is rotationally arranged in the shell; the method comprises the steps of,

the printing head structure comprises a printing head, a pressing and resisting plate and a pressing and resisting elastic piece arranged between the printing head and the pressing and resisting plate, wherein the printing head is arranged between the second rotating shaft and the mounting cylinder and the recovery cylinder, so that when the printing position is adopted, a carbon belt between the mounting cylinder and the recovery cylinder is lifted to a position close to printing paper, and when the printing position is adopted, the printing head is far away from the carbon belt between the mounting cylinder and the recovery cylinder;

the reset elastic piece is arranged between the second rotating shaft and the shell, and the driving surface is abutted against the pressing and resisting plate so as to drive the printing head to be switched from the retracted position to the printing position when the driving cam rotates.

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