CN108638674B - Carbon ribbon box mounting structure and printer - Google Patents

Abstract

The invention relates to a carbon ribbon cartridge mounting structure and a printer, wherein the carbon ribbon cartridge mounting structure comprises a printing panel, a carbon ribbon cartridge and a limiting block, the carbon ribbon cartridge and the limiting block are arranged on the same side of the printing panel, the carbon ribbon cartridge is arranged on the printing panel, the printing panel is provided with a positioning structure, the positioning structure is used for limiting the carbon ribbon cartridge to move transversely or longitudinally on the printing panel, and the limiting block can move relative to the carbon ribbon cartridge; when the limiting block is at the first position, the carbon ribbon box is positioned between the limiting block and the printing panel, and the limiting block and the printing panel are matched to limit the carbon ribbon box to move towards the direction far away from the printing panel; when the limiting block is at the second position, the limiting block is separated from the carbon tape box, and the carbon tape box can move towards the direction far away from the printing panel, so that the influence of disassembly and assembly on the performance of the printer is reduced.

Description

Carbon ribbon box mounting structure and printer

Technical Field

The invention relates to the technical field of printers, in particular to a thermal transfer ribbon cartridge mounting structure and a printer.

Background

The thermal transfer printer is typically configured to mount a thermal transfer ribbon roll within the printer. The carbon tape box is required to be detached from the printer every time when the carbon tape is replaced, but because the installation structure of the carbon tape box is unreasonable, along with the increase of the times of detaching the carbon tape box, the stability of the printer is reduced, and the printing effect of the printer cannot be guaranteed.

Disclosure of Invention

Based on this, the invention provides a thermal transfer ribbon cartridge mounting structure, a printer and a printer to reduce the influence of the dismounting on the performance of the printer.

A carbon ribbon box mounting structure comprises a printing panel, a carbon ribbon box and a limiting block, wherein the carbon ribbon box and the limiting block are arranged on the same side of the printing panel, the carbon ribbon box is arranged on the printing panel, the printing panel is provided with a positioning structure, the positioning structure is used for limiting the carbon ribbon box to move transversely or longitudinally on the printing panel, and the limiting block can move relative to the carbon ribbon box; when the limiting block is at the first position, the carbon ribbon box is positioned between the limiting block and the printing panel, and the limiting block and the printing panel are matched to limit the carbon ribbon box to move towards the direction far away from the printing panel; when the limiting block is at the second position, the limiting block is separated from the carbon tape box, and the carbon tape box can move towards the direction far away from the printing panel.

According to the carbon tape box mounting structure, the carbon tape box is arranged on the printing panel, and the positioning structure on the printing panel limits the carbon tape box to move transversely or longitudinally on the printing panel. When the limiting block is at the first position, the limiting block is matched with the printing panel to limit the carbon ribbon box between the limiting block and the printing panel. When the limiting block is at the second position, the limiting block is separated from the carbon tape box, and the carbon tape box can move towards the direction far away from the printing panel. Compared with the prior art, the movement of the carbon tape box on the printing panel is limited by the positioning structure, so that the carbon tape box can be limited in a specific area on the printing panel. The positioning mechanism controls the movement of the carbon tape box on the printing panel, and the installation precision of the carbon tape box on the printing panel is improved. At the in-process of accomplishing the carbon tape box dismouting, the carbon tape box all is to keeping away from the direction removal of printing the panel, so at the in-process of dismouting carbon tape box, the carbon tape box is little to the deformation influence of location structure, has so guaranteed the stability of carbon tape box mounted position, has guaranteed the printing effect of printer. The problems that the installation position of the carbon ribbon box is unstable, the axial positioning is inaccurate and the printing effect is poor after the carbon ribbon box is disassembled and assembled for many times when the carbon ribbon box is moved and assembled on the printing panel are solved.

Further, the positioning structure comprises a first positioning part, a second positioning part, a third positioning part and a fourth positioning part; the first positioning part and the third positioning part are arranged on two lateral sides of the carbon tape box at intervals, and the first positioning part and the third positioning part are matched to limit the lateral movement of the carbon tape box; the second positioning part and the fourth positioning part are arranged on two sides of the carbon tape box in the longitudinal direction at intervals, and the second positioning part and the fourth positioning part are matched to limit the longitudinal movement of the carbon tape box.

In installation and use, the transverse movement range of the carbon ribbon cartridge is limited by the cooperation of the first positioning part and the third positioning part, and the longitudinal movement range of the carbon ribbon cartridge is limited by the cooperation of the second positioning part and the fourth positioning part. The longitudinal and transverse limiting modes of the carbon tape box facilitate the installation and positioning of the carbon tape box.

Further, the printing panel is provided with a sinking groove, the carbon ribbon cartridge is arranged in the sinking groove, the side walls of the two transverse sides of the sinking groove are the first positioning part and the third positioning part respectively, and the side walls of the two longitudinal sides of the sinking groove are the second positioning part and the fourth positioning part respectively; or the printing panel is provided with a first partition plate, a second partition plate, a third partition plate and a fourth partition plate, the first partition plate and the third partition plate are arranged on two transverse sides of the carbon tape box at intervals, the first partition plate is the first positioning portion, the third partition plate is the third positioning portion, the second partition plate and the fourth partition plate are arranged on two longitudinal sides of the carbon tape box at intervals, the second partition plate is the second positioning portion, and the fourth partition plate is the fourth positioning portion. The partition plate or the groove wall is adopted as the first positioning part, the second positioning part, the third positioning part and the fourth positioning part, the structure is simple, and the processing is convenient.

Further, the limiting block is slidably disposed on the printing panel. The limiting block realizes the position switching between the first position and the second position through the movement relative to the printing panel.

Further, carbon-ribbon cartridge mounting structure still includes the piece that resets, the one end and the printing panel butt of the piece that resets, the other end and the stopper butt of the piece that resets, the piece that resets are used for driving the stopper to remove to the direction that is close to the carbon-ribbon cartridge. Before installation, the limiting block overcomes the elasticity of the reset piece to move towards the direction far away from the carbon tape box, and an installation channel is reserved for the carbon tape box; after the installation, the stopper moves to the direction of being close to the carbon ribbon box under the elasticity effect of the piece that resets, inject the carbon ribbon box between stopper and printing panel.

Further, print the panel and be equipped with the guide way, the stopper install in the guide way and with guide way sliding fit, reset the piece and set up in the guide way, reset the one end of piece and print the panel butt, reset the other end and the stopper butt of piece. Under the promotion of the piece that resets, the stopper slides along the guide way, and the guide way has restricted the motion trail of stopper.

Furthermore, there are two limiting blocks, and the two limiting blocks are arranged on two opposite sides of the carbon tape box at intervals. Two spacing block intervals set up in the relative both sides of carbon-tape box, can effectively guarantee carbon-tape box's installation stability.

Furthermore, a first rotatable support and a second rotatable support are arranged in the carbon ribbon box, and the first rotatable support and the second rotatable support are arranged in parallel at intervals; the first rotating support is used for being in transmission fit with a carbon ribbon recovery roll, and the second rotating support is used for being in transmission fit with a carbon ribbon supply roll. When the first rotating support is a driving support and the second rotating support is a driven support, the first rotating support rotates in the positive direction, and the second rotating support rotates in the positive direction through the carbon ribbon; when the second rotating support is a driving support and the first rotating support is a driven support, the second rotating support rotates reversely, and the first rotating support rotates reversely through the carbon ribbon. In the use process of the printer, the first rotating support and the second rotating support are a driving support and a driven support, and the corresponding working states of the first rotating support and the second rotating support are switched, so that the carbon ribbon can be freely transferred between the carbon ribbon recovery roll and the carbon ribbon supply roll, and the advance and retreat of the carbon ribbon in the printer are realized.

Furthermore, the carbon ribbon cartridge mounting structure also comprises a first driving seat and a second driving seat which are rotatably arranged in the carbon ribbon cartridge, wherein the first driving seat is in transmission fit with the first rotating support, and the second driving seat is in transmission fit with the second rotating support; when the first driving seat is a driving support and the second rotating support is a driven support, the first rotating support rotates in the positive direction, and the second rotating support rotates in the positive direction through a carbon ribbon; when the second rotating support is a driving support and the first rotating support is a driven support, the second rotating support rotates reversely, and the first rotating support rotates reversely through the carbon ribbon. The positive rotation and the reverse rotation of the carbon ribbon are realized by selecting the first driving seat or the second driving seat as the driving support, and further the winding and unwinding of the carbon ribbon rewinding roll and the carbon ribbon supply roll are realized.

Furthermore, a first driving sheet is arranged between the first driving seat and the first rotating support, one side of the first driving sheet is abutted against the first driving seat, and the other side of the first driving sheet is abutted against the first rotating support; and a second driving sheet is arranged between the second driving seat and the second rotating support, one side of the second driving sheet is abutted against the second driving seat, and the other side of the second driving sheet is abutted against the second rotating support. When the first driving seat is a driving support and the second rotating support is a driven support, the first driving sheet rotates along with the first driving seat through the friction force between the first driving seat and the first driving sheet, and the first rotating support rotates along with the first driving sheet through the friction force between the first rotating support and the first driving sheet; the carbon ribbon pulls the second rotating support to overcome the friction between the second rotating support and the second driving sheet to rotate. Through the friction between the second rotating support and the second driving sheet, the second rotating support enables the second rotating support to be pulled to rotate the carbon ribbon and is in a tensioning and leveling state, so that the carbon ribbon is prevented from being folded, and the movement consistency of the first driving seat and the second rotating support is ensured. When the second driving seat is a driving support and the first rotating support is a driven support, the second driving sheet rotates along with the second driving seat through the friction force between the second driving seat and the second driving sheet, and the second rotating support rotates along with the second driving sheet through the friction force between the second rotating support and the second driving sheet; the first rotating support is rotated against the friction force between the first rotating support and the first driving sheet. Through the friction between the first rotating support and the first driving sheet, the first rotating support enables the first rotating support to be pulled to rotate the carbon ribbon and is in a tensioning and supporting flat state, so that the carbon ribbon is prevented from being folded, and the movement consistency of the second driving seat and the first rotating support is ensured. When the first driving seat is the driving support or the second driving seat is the driving support, the first driving sheet and the second driving sheet enable the carbon ribbon between the carbon ribbon supply roll and the carbon ribbon recovery roll to be in a tensioning state, and the problem that the printing effect is influenced due to the fact that the carbon ribbon is loosened is avoided.

Further, the carbon tape cartridge mounting structure further comprises a first input shaft and a second input shaft; the first input shaft is rotatably connected with the carbon ribbon box, one end of the first input shaft is positioned outside the carbon ribbon box, the other end of the first input shaft is positioned in the carbon ribbon box, the first driving seat is synchronously and rotatably connected with the first input shaft, and the first rotating support is rotatably connected with the first input shaft; the second input shaft is rotatably connected with the carbon ribbon box, one end of the second input shaft is positioned outside the carbon ribbon box, the other end of the second input shaft is positioned in the carbon ribbon box, the second driving seat is synchronously and rotatably connected with the second input shaft, and the second rotating support is rotatably connected with the second input shaft.

Furthermore, the first driving seat is provided with a first rotation stopping hole, the first rotating support is provided with a first rotation stopping hole, the first driving seat is sleeved on the first input shaft through the first rotation stopping hole and is synchronously and rotatably matched with the first input shaft, and the first rotating support is sleeved on the first input shaft through the first rotation stopping hole and is rotatably matched with the first input shaft; the second drive seat is provided with a second transfer stopping hole, the second rotary support is provided with a second transfer hole, the second drive seat is sleeved on the second input shaft through the second transfer stopping hole and is in synchronous rotary fit with the second input shaft, the second rotary support is sleeved on the second input shaft through the second transfer hole and is in rotary fit with the second input shaft, the mounting structure is simple, and transmission is effective.

Further, the carbon ribbon cartridge mounting structure further comprises a first gear and a second gear, the first gear is located outside the carbon ribbon cartridge and is in synchronous rotating connection with the first input shaft, and the first gear is used for being in transmission fit with the printer driving mechanism; the second gear is located outside the carbon tape box and is connected with the second input shaft in a synchronous rotating mode, and the second gear is used for being in transmission fit with the printer driving mechanism, so that the influence of a transmission structure on the carbon tape box is reduced, and the carbon tape box is simple in structure.

Further, the carbon tape box is provided with a first support hole and a second support hole; a first rotating bearing is arranged in the first supporting hole, and the first input shaft is arranged in the first rotating bearing; and a second rotating bearing is arranged in the second supporting hole, and the second input shaft is arranged in the second rotating bearing. The arrangement of the rotating bearing reduces the rotating resistance of the first input shaft and the second input shaft.

Further, the carbon tape box is provided with a first mounting port and a second mounting port, the first mounting port and the second mounting port are respectively positioned on two sides of the carbon tape between the carbon tape supply roll and the carbon tape recovery roll, and the printing panel is provided with a printing head corresponding to the first mounting port and the second mounting port; the printing head passes through the first mounting opening and the second mounting opening and protrudes out of the carbon tape box, and the printing head is used for being abutted against the carbon tape between the carbon tape supply roll and the carbon tape recovery roll. When the carbon tape box is installed close to the printing panel in a moving mode, the printing head is abutted to the carbon tape after sequentially passing through the first installation opening and the second installation opening and supports the carbon tape out of the carbon tape box.

Further, the printing head is provided with a first guide protrusion and a second guide protrusion, the first guide protrusion and the second guide protrusion are arranged at intervals along the axial direction of the carbon ribbon supply roll, and the first guide protrusion and the second guide protrusion are used for being matched with a carbon ribbon between the carbon ribbon supply roll and the carbon ribbon recovery roll. The first guide projection and the second guide projection can movably guide the carbon ribbon passing through the printing head.

The invention also provides a printer, which comprises a paper feeding part and a printing part, wherein the printing part comprises the carbon ribbon cartridge mounting structure, a first paper feeding channel is formed between the paper feeding part and the printing part, a printing roller is arranged on the side surface of the paper feeding part close to the printing part, a printing head of the printing part is arranged opposite to the printing roller, a printing channel is formed between the printing roller and the printing head, a second paper feeding channel is arranged in the paper feeding part, the first paper feeding channel and the second paper feeding channel are both communicated with the printing channel, the paper feeding part comprises a first driving mechanism, the first driving mechanism is used for driving printing paper to move in the first paper feeding channel or the second paper feeding channel respectively, the printing part comprises a second driving mechanism, and the second driving mechanism is in transmission fit with the first driving seat or the second driving seat.

When printing paper needs to be switched, the first driving mechanism can be used for driving the first printing paper to roll back to the first paper feeding channel from the printing channel, meanwhile, the second driving mechanism drives the second driving seat to enable the carbon ribbon to synchronously roll back with the printing paper, so that the printed part on the carbon ribbon rolls back, the second driving mechanism is used for driving the other printing paper to advance to the printing channel from the second paper feeding channel, the second driving mechanism drives the first driving seat to enable the carbon ribbon to synchronously advance with the printing paper for the second time, the part, which is not printed, on the carbon ribbon cannot stretch out of the printing channel, the waste of the carbon ribbon is caused, meanwhile, the carbon ribbon and two rolls of printing paper synchronously move, friction between the carbon ribbon and the printing paper cannot be caused, and abrasion to the carbon ribbon is caused.

Further, the second driving mechanism comprises a first motor and a second motor, the first motor is in transmission fit with the first driving seat, the second motor is in transmission fit with the second driving seat, and the first motor and the second motor are both single-steering motors. When the carbon ribbon gos forward, the printing roller and beat printer head cooperation drive and beat printing paper and to advancing, and the first drive seat of first motor drive rotates, and first drive seat is initiative support, second rotation support and is driven support, and first rotation support forward rotates, and the second rotates the support and passes through the carbon ribbon forward rotation. When the carbon ribbon rolls back, the printing roller and the printing head are matched to drive printing paper to move backwards, the second motor drives the second driving seat to rotate, the second driving seat is a driving support, the first rotating support is a driven support, the second rotating support rotates in the forward direction, and the first rotating support rotates in the reverse direction through the carbon ribbon. The positive rotation and the reverse rotation of the carbon ribbon are realized by selecting the first motor or the second motor as the active support, and further the winding and unwinding of the carbon ribbon winding and the carbon ribbon supply roll are realized.

Further, the second driving mechanism comprises a third motor, the third motor is in transmission fit with the second driving seat, and the first driving seat is in transmission fit with the printing roller. The rotation of the carbon tape supply roll is controlled by the third motor, and the rotation of the carbon tape rewinding roll can be controlled through the transmission matching of the first driving seat and the printing roller, so that the control is convenient.

Further, the printing roller is in meshing transmission with the first driving seat gear. The gear transmission has good transmission stability and is beneficial to improving the printing effect.

Further, the printing part also comprises a first panel, and the paper feeding part also comprises a second panel and a third panel; the first panel, the second panel and the third panel are arranged at intervals in sequence, the first panel and the second panel are matched to form the first paper feeding channel, and the second panel and the third panel are matched to form the second paper feeding channel; the first panel is provided with a first through hole, the second panel is provided with a third through hole and a second through hole corresponding to the first through hole, and the third panel is provided with a fourth through hole corresponding to the third through hole; a first connecting column penetrates through the first through hole and the second through hole, a first abutting block and a second abutting block are arranged in the axial direction of the first connecting column at intervals, the first abutting block abuts against one side, far away from the second panel, of the first panel, and the second abutting block abuts against one side, far away from the first panel, of the second panel; wear to be equipped with the second spliced pole in third perforation and the fourth perforation, the interval is provided with third butt piece and fourth butt piece in the axial of second spliced pole, one side butt that the third panel was kept away from to third butt piece and second panel, one side butt that the second panel was kept away from to fourth butt piece and third panel. The first butt joint block, the second butt joint block, the third butt joint block and the fourth butt joint block on the first connecting column and the second connecting column can correct the matching intervals of the first panel, the second panel and the third panel, so that the interval of the paper feeding channels is uniform, the height change of the first paper feeding channel and the second paper feeding channel is reduced, the guidance of the strip-shaped carrier in the first paper feeding channel and the second paper feeding channel is improved, and the paper feeding smoothness of the strip-shaped carrier in the printer is improved.

Further, the first connecting column is rotatably matched with the first through hole and the second through hole, a first through groove matched with the second abutting block is formed in the inner wall of the second through hole, and the first through groove is formed in the direction from the second through hole to the first through hole; when the first connecting column rotates to the first position, the second butting block corresponds to the first through groove, and the first connecting column can slide in the direction from the second through hole to the first through hole; when the first connecting column rotates to the second position, the second abutting block is separated from the first through groove, and the second abutting block abuts against one side, far away from the first panel, of the second panel; the second connecting column is rotatably matched with the third through hole and the fourth through hole, a second through groove matched with the third abutting block is formed in the inner wall of the third through hole, and the second through groove is formed in the direction from the third through hole to the third through hole; when the second connecting column rotates to the first position, the fourth butt joint block corresponds to the second through groove, and the second connecting column can slide in the direction from the fourth through hole to the third through hole; when the second connecting column rotates to the second position, the fourth butt joint block is separated from the second through groove, and the fourth butt joint block is in butt joint with one side, far away from the second panel, of the third panel. The first connecting column and the second panel are disassembled and assembled by rotating and sliding the first connecting column, and the second connecting column and the third panel are disassembled and assembled by rotating and sliding the second connecting column.

Furthermore, two second abutting blocks are arranged at intervals along the circumferential direction of the first connecting column; the two first through grooves correspond to the two second butting blocks one by one; the number of the fourth butt joint blocks is two, and the two fourth butt joint blocks are arranged at intervals along the circumferential direction of the second connecting column; the number of the second through grooves is two, and the two second through grooves correspond to the two fourth abutting blocks one to one. The increase of second butt piece quantity has increased the stability of second butt piece with the second panel butt, and the increase of fourth butt piece quantity has increased the stability of fourth butt piece with the third panel butt.

Drawings

Fig. 1 is a schematic structural diagram of a carbon ribbon cartridge mounting structure according to an embodiment of the present invention;

FIG. 2 is a sectional view taken along line A of FIG. 1;

fig. 3 is a schematic structural diagram of a carbon ribbon cassette according to an embodiment of the present invention;

FIG. 4 is a schematic view of FIG. 3 taken along line B;

FIG. 5 is an exploded view of FIG. 3;

FIG. 6 is a schematic structural diagram of a printer according to an embodiment of the present invention;

FIG. 7 is an enlarged view at C of FIG. 6;

FIG. 8 is a schematic structural diagram of a second driving mechanism of a printer according to an embodiment of the present invention, including a first motor and a second motor;

fig. 9 is a schematic structural diagram of a second driving mechanism of the printer according to the embodiment of the invention, including a third motor;

FIG. 10 is a schematic structural diagram of a second panel and a third panel of the printer according to the embodiment of the present invention;

FIG. 11 is a view in the direction C of FIG. 10;

fig. 12 is a schematic structural view of a fourth through hole of a third panel mounting structure of the printer according to the embodiment of the present invention;

fig. 13 is a schematic structural diagram of a second connecting column of the printer according to the embodiment of the invention.

Description of reference numerals: 100. a printing panel 111, a first positioning portion, 112, a second positioning portion, 113, a third positioning portion, 114, a fourth positioning portion, 121, a first partition plate, 122, a second partition plate, 123, a third partition plate, 124, a fourth partition plate, 130, a guide groove, 200, a carbon ribbon cartridge, 201, a first support hole, 202, a second support hole, 203, a first mounting opening, 204, a second mounting opening, 211, a first rotation support, 211a, a first transfer hole, 212, a first driving seat, 212a, a first transfer stop hole, 213, a first driving piece, 214, a first input shaft, 215, a first gear, 216, a first rotation bearing, 221, a second rotation support, 221a, a second transfer hole, 222, a second driving seat, 222a, a second transfer stop hole, 223, a second driving piece, 224, a second input shaft, 225, a second gear, 226, a second rotation bearing, 230, a mounting block, 241, a first positioning column, 241a, a first sliding hole, 242, a second positioning column, 242a, a second sliding hole, 251, a first elastic pushing element, 252, a second elastic pushing element, 260, a printing head, 261, a structural element, 261a, a first guiding protrusion, 261b, a second guiding protrusion, 262, a heating element, 263, a cambered surface element, 264, a leveling rod, 265, a tensioning rod, 300, a limiting block, 310, a sliding part, 320, a shifting part, 330, a resetting element, 400, a paper feeding part, 410, a printing roller, 411, a third gear, 420, a first paper feeding channel, 430, a second paper feeding channel, 440, a printing channel, 500, a printing part, 520, a second driving mechanism, 521, a first motor, 522, a second motor, 523, a third motor, 524, a fourth gear, 600, a second panel, 610, a third through hole, 620, a second arc-shaped protrusion, 621, a third limiting part, 622, a fourth limiting part, 700, and a third panel, 710. a fourth through hole 711, a second through groove 800, a second connecting column 810, a third abutting block 820, a fourth abutting block 821, a second guiding conical surface 822, a second abutting guiding surface 830, a second elastic member 840, a second limiting member 910, printing paper 920 and a carbon ribbon.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

With reference to fig. 1 and fig. 2, an embodiment of the present invention provides a carbon ribbon cartridge mounting structure, including a printing panel 100, a carbon ribbon cartridge 200, and a limiting block 300, where the carbon ribbon cartridge 200 and the limiting block 300 are disposed on the same side of the printing panel 100, the carbon ribbon cartridge 200 is disposed on the printing panel 100, the printing panel 100 is provided with a positioning structure, the positioning structure is used to limit the carbon ribbon cartridge 200 to move transversely or longitudinally on the printing panel 100, and the limiting block 300 can move relative to the carbon ribbon cartridge 200; when the limiting block 300 is at the first position, the carbon ribbon cartridge 200 is located between the limiting block 300 and the printing panel 100, and the limiting block 300 and the printing panel 100 cooperate to limit the carbon ribbon cartridge 200 to move in a direction away from the printing panel 100; when the stopper 300 is at the second position, the stopper 300 is disengaged from the carbon tape cartridge 200, and the carbon tape cartridge 200 can move away from the printing panel 100.

In the above-described carbon tape cartridge mounting structure, the carbon tape cartridge 200 is disposed on the printing panel 100, and the positioning structure on the printing panel 100 restricts the carbon tape cartridge 200 from moving laterally or longitudinally on the printing panel 100. When the stopper 300 is in the first position, the stopper 300 cooperates with the printing panel 100 to restrain the carbon tape cartridge 200 between the stopper 300 and the printing panel 100. When the stopper 300 is at the second position, the stopper 300 is disengaged from the carbon tape cartridge 200, and the carbon tape cartridge 200 can move away from the printing panel 100. Compared with the prior art, the present application limits the movement of the carbon tape cartridge 200 on the printing panel 100 through the positioning structure, so that the carbon tape cartridge 200 can be limited to a specific area on the printing panel 100. The positioning mechanism controls the movement of the carbon tape cartridge 200 on the printing panel 100, and improves the mounting accuracy of the carbon tape cartridge 200 on the printing panel 100. In the process of completing the dismounting of the carbon tape cartridge 200, the carbon tape cartridge 200 moves in the direction away from the printing panel 100, so that in the process of dismounting the carbon tape cartridge 200, the deformation influence of the carbon tape cartridge 200 on the positioning structure is small, the stability of the mounting position of the carbon tape cartridge 200 is ensured, and the printing effect of the printer is ensured. The problems that when the carbon tape box 200 moves on the printing panel 100 for dismounting, the carbon tape box 200 is unstable in mounting position, inaccurate in axial positioning and poor in printing effect after the carbon tape box 200 is dismounted for multiple times are solved.

Further, the positioning structure includes a first positioning portion 111, a second positioning portion 112, a third positioning portion 113, and a fourth positioning portion 114; the first positioning part 111 and the third positioning part 113 are arranged at two sides of the carbon tape box 200 at intervals, and the first positioning part 111 and the third positioning part 113 cooperate to limit the lateral movement of the carbon tape box 200; the second positioning portion 112 and the fourth positioning portion 114 are disposed at intervals on two sides of the carbon ribbon cartridge 200 in the longitudinal direction, and the second positioning portion 112 and the fourth positioning portion 114 cooperate to limit the longitudinal movement of the carbon ribbon cartridge 200.

In mounting use, the cooperation of the first positioning portion 111 and the third positioning portion 113 limits the lateral movement range of the ribbon cartridge 200, and the cooperation of the second positioning portion 112 and the fourth positioning portion 114 limits the longitudinal movement range of the ribbon cartridge 200. This longitudinally and laterally defined manner of the carbon tape cartridge 200 facilitates the mounting positioning of the carbon tape cartridge 200.

Specifically, in the present embodiment, the printing panel 100 is provided with a first partition board 121, a second partition board 122, a third partition board 123 and a fourth partition board 124, the first partition board 121 and the third partition board 123 are disposed at intervals on two lateral sides of the carbon ribbon cartridge 200, the first partition board 121 is the first positioning portion 111, the third partition board 123 is the third positioning portion 113, the second partition board 122 and the fourth partition board 124 are disposed at intervals on two longitudinal sides of the carbon ribbon cartridge 200, the second partition board 122 is the second positioning portion 112, and the fourth partition board 124 is the fourth positioning portion 114. The use of the partition plates as the first positioning portion 111, the second positioning portion 112, the third positioning portion 113, and the fourth positioning portion 114 is simple in structure and convenient in processing.

In other embodiments, the printing panel 100 is provided with a sunken groove, the carbon ribbon cartridge 200 is disposed in the sunken groove, the lateral walls of the sunken groove on two lateral sides are the first positioning portion 111 and the third positioning portion 113, respectively, and the lateral walls of the sunken groove on two longitudinal sides are the second positioning portion 112 and the fourth positioning portion 114.

It should be noted that the positioning structure is defined by a partition or a sunken groove to limit the lateral or longitudinal movement of the carbon tape cartridge 200 relative to the printing panel 100, and in other embodiments, the positioning structure may be a pin, a stop, or the like.

Further, referring to fig. 2, the limiting block 300 is slidably disposed on the printing panel 100. The stopper 300 effects the position switching between the first position and the second position by the movement relative to the printing panel 100.

Further, the carbon ribbon cartridge 200 mounting structure further includes a reset member 330, one end of the reset member 330 abuts against the printing panel 100, the other end of the reset member 330 abuts against the limiting block 300, and the reset member 330 is used for driving the limiting block 300 to move towards the direction close to the carbon ribbon cartridge 200. During installation, the limiting block 300 overcomes the elastic force of the reset piece 330 to move towards the direction far away from the carbon tape box 200, and an installation channel is reserved for the carbon tape box 200; after installation, the stopper 300 is moved toward the carbon tape cartridge 200 by the elastic force of the reset member 330, so that the carbon tape cartridge 200 is confined between the stopper 300 and the printing panel 100.

Specifically, in this embodiment, a side of the carbon ribbon cartridge 200 close to the printing panel 100 is provided with a mounting block 230 for cooperating with the limiting block 300, and when the limiting block 300 is at the first position, the mounting block 230 is located between the limiting block 300 and the printing panel 100. The installation block 230 is provided to make the installation structure of the carbon tape cartridge 200 compact.

Further, print panel 100 and be equipped with guide way 130, stopper 300 install in guide way 130 and with guide way 130 sliding fit, reset piece 330 sets up in guide way 130, and the one end of reset piece 330 and print panel 100 butt, the other end and the stopper 300 butt of reset piece 330. Under the pushing of the reset member 330, the limit block 300 slides along the guide groove 130, and the guide groove 130 limits the motion track of the limit block 300.

Specifically, the stopper 300 includes a sliding portion 310 disposed in the guide groove 130 and a toggle portion 320 protruding out of the guide groove 130. In use, the stopper 300 restricts the position of the carbon tape cartridge 200 by the sliding portion 310 in the guide groove 130 cooperating with the printing panel 100, and the stopper 300 is moved away from the carbon tape cartridge 200 by the toggle portion 320.

Further, there are two limiting blocks 300, and the two limiting blocks 300 are disposed at opposite sides of the carbon ribbon cartridge 200 at intervals. Two spacing blocks 300 set up in the both sides of carbon ribbon box 200 at intervals, can effectively guarantee carbon ribbon box 200's installation stability. Specifically, in this embodiment, there are two mounting blocks 230, the two mounting blocks 230 are respectively located at two longitudinal sides of the carbon ribbon cartridge 200, the two limiting blocks 300 are respectively disposed at two longitudinal sides of the carbon ribbon cartridge 200, one of the limiting blocks 300 is located at a side of the second partition plate 122 away from the carbon ribbon cartridge 200, the other limiting block 300 is located at a side of the fourth partition plate 124 away from the carbon ribbon cartridge 200, and the two mounting blocks 230 and the two limiting blocks 300 are correspondingly matched one to one; when the limiting blocks 300 are at the first position, the toggle part 320 of one of the limiting blocks 300 is in abutting position with one side of the second partition plate 122 away from the carbon ribbon cartridge 200, and the toggle part 320 of the other limiting block 300 is in abutting position with one side of the fourth partition plate 124 away from the carbon ribbon cartridge 200.

Further, with reference to fig. 3, 4 and 5, a rotatable first rotating support 211 and a rotatable second rotating support 221 are arranged in the carbon ribbon cartridge 200, and the first rotating support 211 and the second rotating support 221 are arranged in parallel and spaced apart from each other; the first rotating support 211 is used for being in transmission fit with a carbon ribbon recovery roll, and the second rotating support 221 is used for being in transmission fit with a carbon ribbon supply roll. When the first rotating support 211 is a driving support and the second rotating support 221 is a driven support, the first rotating support 211 rotates in the forward direction, and the second rotating support 221 rotates in the forward direction through a carbon ribbon; when the second rotating support 221 is a driving support and the first rotating support 211 is a driven support, the second rotating support 221 rotates in the opposite direction, and the first rotating support 211 rotates in the opposite direction by the carbon ribbon. In the using process of the printer, the first rotating support 211 and the second rotating support 221 are a driving support and a driven support, and the carbon ribbon can be freely transferred between the carbon ribbon recovery roll and the carbon ribbon supply roll by switching the corresponding working states of the first rotating support 211 and the second rotating support 221, so that the advance and retreat of the carbon ribbon in the printer are realized.

Further, the carbon ribbon cartridge mounting structure further comprises a first driving seat 212 and a second driving seat 222 which are rotatably arranged in the carbon ribbon cartridge 200, wherein the first driving seat 212 is in transmission fit with the first rotating support 211, and the second driving seat 222 is in transmission fit with the second rotating support 221; when the first driving seat 212 is a driving seat and the second rotating seat 221 is a driven seat, the first rotating seat 211 rotates forward, and the second rotating seat 221 rotates forward through a carbon ribbon; when the second rotating support 221 is a driving support and the first rotating support 211 is a driven support, the second rotating support 221 rotates in the opposite direction, and the first rotating support 211 rotates in the opposite direction by the carbon ribbon. The positive rotation and the reverse rotation of the carbon ribbon are realized by selecting the first driving seat 212 or the second driving seat 222 as an active support, and further, the carbon ribbon recovery roll and the carbon ribbon supply roll are collected and released.

Further, a first driving plate 213 is arranged between the first driving seat 212 and the first rotating support 211, one side of the first driving plate 213 is abutted with the first driving seat 212, and the other side of the first driving plate 213 is abutted with the first rotating support 211; a second driving plate 223 is arranged between the second driving seat 222 and the second rotating support 221, one side of the second driving plate 223 is abutted with the second driving seat 222, and the other side of the second driving plate 223 is abutted with the second rotating support 221.

When the first driving seat 212 is a driving seat and the second rotating seat 221 is a driven seat, the first driving plate 213 rotates along with the first driving seat 212 through the friction force between the first driving seat 212 and the first driving plate 213, and the first rotating seat 211 rotates along with the first driving plate 213 through the friction force between the first rotating seat 211 and the first driving plate 213; the carbon tape pulls the second rolling support 221 to rotate against the friction between the second rolling support 221 and the second driving plate 223. Through the friction force between the second rotating support 221 and the second driving piece 223, the second rotating support 221 enables the second rotating support 221 to be pulled to rotate the carbon belt to be in a tensioned and supported flat state, so that the carbon belt is prevented from being wrinkled, and the consistency of the movement of the first driving seat 212 and the second rotating support 221 is ensured. When the second driving seat 222 is a driving seat and the first rotating seat 211 is a driven seat, the second driving plate 223 rotates along with the second driving seat 222 through the friction force between the second driving seat 222 and the second driving plate 223, and the second rotating seat 221 rotates along with the second driving plate 223 through the friction force between the second rotating seat 221 and the second driving plate 223; the first rotary support 211 rotates against the friction between the first rotary support 211 and the first driving plate 213. Through the friction force between the first rotating support 211 and the first driving plate 213, the first rotating support 211 pulls the first rotating support 211 to rotate the carbon ribbon, so that the carbon ribbon is tensioned and supported to be flat, wrinkles are avoided, and the consistency of the movement of the second driving seat 222 and the first rotating support 211 is ensured.

It can be seen that when the first driving seat 212 is an active seat or the second driving seat 222 is an active seat, the first driving plate 213 and the second driving plate 223 enable the thermal transfer ribbon between the thermal transfer ribbon supply roll and the thermal transfer ribbon recovery roll to be in a tensioned state, thereby avoiding the problem that the thermal transfer ribbon is loosened to affect the printing effect.

In some special cases, when asynchronous transmission is needed between the first driving seat 212 and the second rotating support 221, asynchronous transmission can be achieved between the first driving seat 212 and the second rotating support 221 through the second driving plate 223; when asynchronous transmission is required between the second driving seat 222 and the first rotating support 211, asynchronous transmission can be realized between the second driving seat 222 and the first rotating support 211 through the first driving plate 213.

The carbon ribbon cartridge 200 mounting structure further includes a first input shaft 214 and a second input shaft 224; the first input shaft 214 is rotatably connected with the carbon tape cartridge 200, one end of the first input shaft 214 is positioned outside the carbon tape cartridge 200, the other end of the first input shaft 214 is positioned inside the carbon tape cartridge 200, the first driving seat 212 is synchronously and rotatably connected with the first input shaft 214, and the first rotating support 211 is rotatably connected with the first input shaft 214; the second input shaft 224 is rotatably connected with the carbon ribbon cartridge 200, one end of the second input shaft 224 is located outside the carbon ribbon cartridge 200, the other end of the second input shaft 224 is located inside the carbon ribbon cartridge 200, the second driving seat 222 is synchronously and rotatably connected with the second input shaft 224, and the second rotating support 221 is rotatably connected with the second input shaft 224, so that the transmission is simple and the structure is compact.

The first driving seat 212 is provided with a first rotation stopping hole 212a, the first rotating support 211 is provided with a first rotation stopping hole 211a, the first driving seat 212 is sleeved on the first input shaft 214 through the first rotation stopping hole 212a and is synchronously and rotatably matched with the first input shaft 214, and the first rotating support 211 is sleeved on the first input shaft 214 through the first rotation stopping hole 211a and is rotatably matched with the first input shaft 214; the second driving seat 222 is provided with a second rotation stopping hole 222a, the second rotating support 221 is provided with a second rotation stopping hole 221a, the second driving seat 222 is sleeved on the second input shaft 224 through the second rotation stopping hole 222a and is synchronously and rotatably matched with the second input shaft 224, the second rotating support 221 is sleeved on the second input shaft 224 through the second rotation stopping hole 221a and is rotatably matched with the second input shaft 224, the mounting structure is simple, and the transmission is effective.

The carbon tape box 200 mounting structure further comprises a first gear 215 and a second gear 225, wherein the first gear 215 is positioned outside the carbon tape box 200, the first gear 215 is synchronously and rotatably connected with the first input shaft 214, and the first gear 215 is used for being in transmission fit with a printer driving mechanism; the second gear 225 is located outside the carbon tape box 200, the second gear 225 is synchronously and rotationally connected with the second input shaft 224, and the second gear 225 is used for being in transmission fit with a printer driving mechanism, so that the influence of a transmission structure on a carbon tape roll is reduced, and the structure is simple.

The carbon tape cartridge 200 is provided with a first support hole 201 and a second support hole 202; a first rotating bearing 216 is arranged in the first supporting hole 201, and the first input shaft 214 is mounted in the first rotating bearing 216; the second support hole 202 is provided with a second rotation bearing 226 therein, and the second input shaft 224 is mounted in the second rotation bearing 226. The rotation bearings are provided to reduce the rotation resistance of the first and second input shafts 214 and 224.

Specifically, the carbon tape cartridge 200 mounting structure further includes a first positioning column 241 and a second positioning column 242, the first positioning column 241 corresponds to the first rotating support 211, the first positioning column 241 is used for abutting against and positioning one end of the carbon tape recovery roll, and the first rotating support 211 is used for abutting against and driving the other end of the carbon tape recovery roll; the second positioning column 242 corresponds to the second rotating support 221, the second positioning column 242 is used for being abutted and positioned with one end of the carbon ribbon supply roll, and the second rotating support 221 is used for being abutted and driven with the other end of the carbon ribbon supply roll.

Further, the first positioning column 241 and the second positioning column 242 are slidably engaged with the carbon ribbon cartridge 200, and the first positioning column 241 can slide toward or away from the first rotating support 211; the second positioning posts 242 can slide toward or away from the second rotating support 221, which facilitates the detachment of the carbon ribbon supply roll and the carbon ribbon rewinding roll.

Further, the carbon ribbon cartridge 200 is provided with a first sliding hole 241a and a second sliding hole 242a, the first positioning post 241 is inserted into the first sliding hole 241a and is in sliding fit with the first sliding hole 241a, a first elastic pushing member 251 is arranged between the carbon ribbon cartridge 200 and the first positioning post 241, one end of the first elastic pushing member 251 is abutted with the carbon ribbon cartridge 200, the other end of the first elastic pushing member 251 is abutted with the first positioning post 241, and the first elastic pushing member 251 is used for pushing the first positioning post 241 to slide towards the direction close to the first rotating support 211; the second positioning post 242 is inserted into the second sliding hole 242a and slidably fits with the second sliding hole 242a, a second elastic pushing member 252 is disposed between the carbon ribbon cartridge 200 and the second rotating support 221, one end of the second elastic pushing member 252 abuts against the carbon ribbon cartridge 200, the other end of the second elastic pushing member 252 abuts against the second positioning post 242, and the second elastic pushing member 252 is configured to push the second positioning post 242 to slide in a direction approaching the second rotating support 221.

Referring to fig. 2 and 5, the carbon tape cartridge 200 is provided with a first mounting opening 203 and a second mounting opening 204, the first mounting opening 203 and the second mounting opening 204 are respectively located at two sides of the carbon tape between the carbon tape supply roll and the carbon tape recovery roll, and the printing panel 100 is provided with a printing head 260 corresponding to the first mounting opening 203 and the second mounting opening 204; the print head 260 protrudes out of the carbon tape cartridge 200 through the first mounting opening 203 and the second mounting opening 204, and the print head 260 is used for abutting against the carbon tape between the carbon tape supply roll and the carbon tape recovery roll. When the carbon tape cartridge 200 is moved closer to the printing panel 100, the print head 260 passes through the first mounting opening 203 and the second mounting opening 204 in this order, abuts against the carbon tape, and pushes the carbon tape out of the carbon tape cartridge 200.

Referring to fig. 2, the print head 260 is provided with first and second guide protrusions 261a and 261b, the first and second guide protrusions 261a and 261b being spaced apart from each other in the axial direction of the carbon ribbon supply roll, the first and second guide protrusions 261a and 261b being for cooperation with the carbon ribbon between the carbon ribbon supply roll and the carbon ribbon recovery roll. The first guide projection 261a and the second guide projection 261b can movably guide the ribbon passing through the print head 260.

With reference to fig. 6 and 7, the present invention further provides a printer, including a paper feeding portion 400 and a printing portion 500, where the printing portion 500 includes the thermal transfer ribbon cartridge mounting structure, a first paper feeding channel 420 is formed between the paper feeding portion 400 and the printing portion 500, a printing roller 410 is disposed on a side surface of the paper feeding portion 400 close to the printing portion 500, a printing head 260 of the printing portion 500 is disposed opposite to the printing roller 410, a printing channel 440 is formed between the printing roller 410 and the printing head 260, a second paper feeding channel 430 is disposed in the paper feeding portion 400, the first paper feeding channel 420 and the second paper feeding channel 430 are both communicated with the printing channel 440, the paper feeding portion 400 includes a first driving mechanism, the first driving mechanism is configured to respectively drive a printing paper 910 to move in the first paper feeding channel 420 or the second paper feeding channel 430, the printing portion 500 includes a second driving mechanism 520, the second driving mechanism 520 is in transmission fit with the first driving seat 212 or the second driving seat 222.

When the printing paper 910 needs to be switched, the first driving mechanism may first drive the first printing paper 910 to retreat from the printing channel 440 into the first paper feeding channel 420, and the second driving mechanism 520 drives the second driving seat 222 to retreat the carbon ribbon 920 and the printing paper 910 synchronously, so as to retreat the printed portion of the carbon ribbon 920, and then the second driving mechanism 520 drives another printing paper 910 to advance from the second paper feeding channel 430 into the printing channel 440, and the second driving mechanism 520 drives the first driving seat 212 to advance the carbon ribbon 920 and the printing paper 910 synchronously and advance again, so that the unprinted portion of the carbon ribbon 920 does not extend out of the printing channel 440, which results in waste of the carbon ribbon 920, and the carbon ribbon 920 and two rolls of printing paper 910 move synchronously, which does not cause friction between the carbon ribbon 920 and the printing paper 910, thereby causing wear to the carbon ribbon 920.

With reference to fig. 8, the second driving mechanism 520 includes a first motor 521 and a second motor 522, the first motor 521 is in transmission fit with the first driving seat 212, the second motor 522 is in transmission fit with the second driving seat 222, and both the first motor 521 and the second motor 522 are single-direction motors. When the carbon ribbon 920 advances, the printing roller 410 and the printing head 260 cooperate to drive the printing paper 910 to advance, the first motor 521 drives the first driving seat 212 to rotate, the first driving seat 212 is a driving seat, the second rotating seat 221 is a driven seat, the first rotating seat 211 rotates in the forward direction, and the second rotating seat 221 rotates in the forward direction through the carbon ribbon 920. When the carbon ribbon 920 retracts, the printing roller 410 and the printing head 260 cooperate to drive the printing paper 910 to retract backwards, the second motor 522 drives the second driving seat 222 to rotate, the second driving seat 222 is a driving seat, the first rotating seat 211 is a driven seat, the second rotating seat 221 rotates forwards, and the first rotating seat 211 rotates backwards through the carbon ribbon 920. The forward rotation and the reverse rotation of the carbon ribbon 920 are realized by selecting the first motor 521 or the second motor 522 as an active support, so that the carbon ribbon recovery roll and the carbon ribbon supply roll are collected and released.

Specifically, the first motor 521 and the second motor 522 are disposed on the printing panel 100, the first motor 521 is in meshing transmission with the first gear 215 on the first input shaft 214, and the second motor 522 is in meshing transmission with the second gear 225 on the second input shaft 224.

In other embodiments, in conjunction with fig. 9, the second driving mechanism 520 includes a third motor 523, the third motor 523 is in driving engagement with the second driving seat 222, and the first driving seat 212 is in driving engagement with the print roller 410. The rotation of the ribbon supply roll is controlled by the third motor 523, and the rotation of the ribbon recovery roll is controlled by the transmission cooperation of the first driving seat 212 and the printing roller 410, which is convenient to control. Specifically, in the present embodiment, the third motor 523 rotates the second driving socket 222 through the second gear 225.

Further, the driving fit of the print roller 410 and the first driving seat 212 may be a gear engagement driving. The gear transmission has good transmission stability and is beneficial to improving the printing effect. Specifically, the end of the print roller 410 is provided with a third gear 411, and the print roller 410 and the first driving seat 212 are in meshing transmission through a fourth gear 524 between the third gear 411 and the first gear 215.

Further, the printing part 500 further includes a first panel, and the paper feeding part 400 further includes a second panel 600 and a third panel 700; the first panel, the second panel 600 and the third panel 700 are arranged in sequence at intervals, the first panel and the second panel 600 are matched to form the first paper feeding channel 420, and the second panel 600 and the third panel 700 are matched to form the second paper feeding channel 430; the first panel is provided with a first through hole, and the second panel 600 is provided with a third through hole 610 and a second through hole corresponding to the first through hole. With reference to fig. 10 and 11, the third panel 700 is provided with a fourth through hole 710 corresponding to the third through hole 610; the first connecting column penetrates through the first through hole and the second through hole, a first abutting block and a second abutting block are arranged in the axial direction of the first connecting column at intervals, the first abutting block abuts against one side, far away from the second panel 600, of the first panel, and the second abutting block abuts against one side, far away from the first panel, of the second panel 600; the second connecting column 800 penetrates through the third through hole 610 and the fourth through hole 710, a third abutting block 810 and a fourth abutting block 820 are arranged on the second connecting column 800 in the axial direction at intervals, the third abutting block 810 abuts against one side, away from the third panel 700, of the second panel 600, and the fourth abutting block 820 abuts against one side, away from the second panel 600, of the third panel 700. The first abutting block, the second abutting block, the third abutting block 810 and the fourth abutting block 820 on the first connecting column and the second connecting column 800 can correct the matching space of the first panel, the second panel 600 and the third panel 700, so that the space of the paper feeding channels is uniform, the height change of the first paper feeding channel 420 and the second paper feeding channel 430 is reduced, the guidance of the belt-shaped carrier in the first paper feeding channel 420 and the second paper feeding channel 430 is improved, and the paper feeding smoothness of the belt-shaped carrier in the printer is improved.

Further, the first connecting column is rotatably matched with the first through hole and the second through hole, a first through groove matched with the second abutting block is formed in the inner wall of the second through hole, and the first through groove is formed in the direction from the second through hole to the first through hole; when the first connecting column rotates to the first position, the second butting block corresponds to the first through groove, and the first connecting column can slide in the direction from the second through hole to the first through hole; when the first connecting column rotates to the second position, the second abutting block is separated from the first through groove, and the second abutting block abuts against one side, far away from the first panel, of the second panel 600. With reference to fig. 12 and 13, the second connecting column 800 is rotatably engaged with the third through hole 610 and the fourth through hole 710, a second through groove 711 engaged with the third abutting block 810 is disposed on an inner wall of the third through hole 610, and the second through groove 711 is disposed along a direction from the third through hole 610 to the third through hole 610; when the second connecting column 800 rotates to the first position, the fourth abutting block corresponds to the second through groove 711, and the second connecting column 800 can slide in the direction from the fourth through hole 710 to the third through hole 610; when the second connecting column 800 rotates to the second position, the fourth abutting block 820 is separated from the second through groove 711, and the fourth abutting block 820 abuts against one side of the third panel 700 far away from the second panel 600. The first coupling post is disassembled from the second panel 600 by rotating and sliding the first coupling post, and the second coupling post 800 is disassembled from the third panel 700 by rotating and sliding the second coupling post 800.

Furthermore, two second abutting blocks are arranged at intervals along the circumferential direction of the first connecting column; the two first through grooves correspond to the two second butting blocks one by one; two fourth abutting blocks 820 are provided, and the two fourth abutting blocks 820 are arranged at intervals along the circumferential direction of the second connecting column 800; there are two second through grooves 711, and the two second through grooves 711 correspond to the two fourth abutting blocks 820 one by one. The stability of second butt joint piece and second panel 600 butt has been increased in the increase of second butt joint piece quantity, and the stability of fourth butt joint piece 820 with third panel 700 butt has been increased in the increase of fourth butt joint piece 820 quantity.

Further, a first elastic piece is arranged between the first panel and the first abutting block, one side of the first elastic piece abuts against the first panel, and the other side of the first elastic piece abuts against the first abutting block; a second elastic member 830 is disposed between the second panel 600 and the third abutting block 810, one side of the second elastic member 830 abuts against the second panel 600, and the other side of the second elastic member 830 abuts against the third abutting block 810. The first elastic piece between first panel and the first butt piece can compensate the clearance between second butt piece and second panel 600, first butt piece and the first panel, makes the connected position relation of first spliced pole and first panel and second panel 600 be in stable condition. The second elastic member 830 between the second panel 600 and the third abutting block 810 can compensate for the gap between the fourth abutting block 820 and the third panel 700, and the gap between the third abutting block 810 and the second panel 600, so that the connection position relationship between the second connecting column 800 and the second panel 600 and the third panel 700 is in a stable state.

Further, a first limiting part and a second limiting part which are matched with the first abutting block are arranged on one side, away from the second panel 600, of the first panel; when the first abutting block abuts against the first limiting part, the second abutting block corresponds to the first through groove, and the first connecting column can slide in the direction from the second through hole to the first through hole; when the first abutting block abuts against the second limiting part, the second abutting block is separated from the first through groove, and the second abutting block abuts against one side, far away from the first panel, of the second panel 600. With reference to fig. 11, a third position-limiting portion 621 and a fourth position-limiting portion 622 matched with the third abutting block 810 are disposed on a side of the second panel 600 away from the third panel 700; when the third abutting block 810 abuts against the third limiting portion 621, the fourth abutting block 820 corresponds to the second through groove 711, and the second connecting column 800 can slide in the direction from the fourth through hole 710 to the third through hole 610; when the third abutting block 810 abuts against the fourth limiting portion 622, the fourth abutting block 820 is separated from the second through groove 711, and the fourth abutting block 820 abuts against one side of the third panel 700 far away from the second panel 600. The first limiting part and the second limiting part are arranged to facilitate judging the position matching relationship between the second abutting block and the first through groove, and the third limiting part 621 and the fourth limiting part 622 are arranged to facilitate judging the position matching relationship between the fourth abutting block 820 and the second through groove 711.

Further, a first arc-shaped protruding block matched with the first abutting block is arranged on one side, away from the second panel 600, of the first panel, one end of the first arc-shaped protruding block is the first limiting portion, and the other end of the first arc-shaped protruding block is the second limiting portion; one side of the second panel 600, which is far away from the third panel 700, is provided with a second arc-shaped protrusion 620 which is matched with the third abutting block 810, one end of the second arc-shaped protrusion 620 is the third limiting portion 621, and the other end of the second arc-shaped protrusion 620 is the fourth limiting portion 622. The two ends of the first arc-shaped bump are respectively provided with the first limiting part and the second limiting part, the rotation range of the first abutting block is limited through the matching of the first arc-shaped bump and the first abutting block, and the position relation between the second abutting block and the first through groove is conveniently controlled; the two ends of the second arc-shaped protrusion 620 are respectively provided with a third limiting portion 621 and a fourth limiting portion 622, the rotation range of the third abutting block 810 is limited by the cooperation of the second arc-shaped protrusion 620 and the third abutting block 810, and the position relation between the fourth abutting block 820 and the second through groove 711 is conveniently controlled.

Furthermore, a first guide conical surface matched with the second through hole is arranged at one end, far away from the second abutting block, of the first abutting block; the end of the second abutting block far from the fourth abutting block 820 is provided with a second guiding conical surface 821 matched with the fourth through hole 710. The arrangement of the first guide conical surface facilitates the installation of the second butting block and the second through hole; the second guiding taper 821 facilitates the installation of the fourth abutting block 820 and the fourth through hole 710.

Further, the one end that first butt piece is close to the second butt piece is equipped with the first butt spigot surface with second panel 600 complex, the rotation direction slope setting of the relative first spliced pole of first butt spigot surface. With reference to fig. 13, a second abutting guide surface 822 engaged with the second panel 600 is disposed at an end of the third abutting block 810 close to the second abutting block, and the second abutting guide surface 822 is disposed in an inclined manner relative to the rotation direction of the second connecting column 800. Simple structure has made things convenient for first spliced pole and second spliced pole 800 to change to the first position from the second position.

Further, the first connecting post is provided with a first limiting member matched with the first panel, the first limiting member is located between the first panel and the second panel 600, and the first limiting member is used for limiting the sliding range of the first connecting post in the direction from the second through hole to the first through hole; the second connecting column 800 is provided with a second limiting part 840 matched with the second panel 600, the second limiting part 840 is located between the second panel 600 and the third panel 700, and the second limiting part 840 is used for limiting the sliding range of the second connecting column 800 in the direction from the fourth through hole 710 to the third through hole 610. The first limiting piece is arranged to limit the sliding range of the first connecting column in the direction from the second through hole to the first through hole, so that the first connecting column is prevented from being separated from the first panel; the second limiting member 840 limits the sliding range of the second connecting column 800 in the direction from the fourth through hole 710 to the third through hole 610, and prevents the second connecting column 800 from separating from the second panel 600.

It should be noted that the connecting and mounting structure of the first connecting column and the first and second panels is not shown in the drawings, and the mounting structure of the first connecting column can refer to the mounting structure of the second connecting column 800 and the second and third panels in the drawings.

With reference to fig. 7, the printhead 260 includes a structural member 261 and a heating member 262, the structural member 261 is disposed on the printing panel 100, the structural member 261 sequentially passes through the first mounting hole 203 and the second mounting hole 204, the heating member 262 is disposed on the structural member 261 near one side of the printing roller 410, the heating member 262 cooperates with the printing roller 410 to form the printing channel 440, and the two sides of the heating member 262 on the structural member 261 are respectively provided with an arc-shaped member 263 and a flat bar 264. The cambered surface part 263 can ensure that the process of the carbon ribbon 920 passing through the cambered surface part 263 is smoother, and meanwhile, the flat supporting rod 264 and the cambered surface part 263 are positioned on two sides of the heating element 262, so that the carbon ribbon 920 can be ensured to be fully leveled, and the subsequent printing effect is improved.

Specifically, the first guide protrusion 261a and the second guide protrusion 261b are respectively provided on the structural member 261.

Specifically, the ribbon support portion of the leveling rod 264, the ribbon support portion of the heating element 262, and the ribbon support portion of the cambered surface element 263 are in a zigzag shape, and the ribbon 920 and the part passing through the leveling rod 264, the heating element 262, and the cambered surface element 263 are partially wrapped on the printing roller 410, so that the contact between the ribbon 920 and the printing head 260 and the printing paper passing through the printing roller 410 is more sufficient, wrinkles are not generated, and the printing effect is better.

Further, a tension rod 265 is disposed in the carbon ribbon cartridge 200, and the tension rod 265 is disposed on the other side of the heating member 262 relative to the leveling rod 264. The tension rod 265 can ensure that the carbon ribbon 920 keeps a tension state in the moving process, so that the situations of slipping or wrinkling and the like are prevented, and the printing effect is further improved.

The invention also provides a printer control method, which adopts the printer and comprises the following steps:

the first driving mechanism drives the first printing paper 910 to retreat, so that the first printing paper 910 retreats from the printing channel 440 to the first paper feeding channel 420, and the second driving mechanism 520 drives the carbon ribbon 920 to retreat synchronously with the first printing paper 910;

the first driving mechanism drives the second printing paper 910 to advance, so that the second printing paper 910 advances from the second paper feeding path 430 to the printing path 440, and the second driving mechanism 520 drives the carbon belt 920 to advance synchronously with the second printing paper 910.

According to the printer control method, the carbon ribbon 920 goes through the processes of returning and advancing again, and the unprinted part of the carbon ribbon 920 does not extend out of the printing channel 440, so that waste of printing paper 910 is avoided.

Further, the driving mechanism 520 drives the thermal transfer ribbon 920 and the first printing paper 910 to synchronously retract, which specifically includes the following steps: after the second driving mechanism 520 drives the thermal transfer ribbon 920 and the first printing paper 910 to synchronously retract to the first predetermined position, the second driving mechanism 520 drives the thermal transfer ribbon 920 to stop, where the first predetermined position is located in the first paper feeding path 420, and the first predetermined position is located on a side of the intersection of the second paper feeding path 430 and the printing path 440, which is far away from the printing path 440.

At this time, the first printing paper 910 is retracted into the first paper feeding path 420, and does not interfere with the advance of the second printing paper 910.

Further, the second driving mechanism 520 drives the thermal transfer ribbon 920 and the second printing paper 910 to advance synchronously, which specifically includes the following steps: after the second printing paper 910 advances to the second predetermined position, the second driving mechanism 520 drives the thermal transfer ribbon 920 and the second printing paper 910 to advance synchronously, wherein the second predetermined position is located in the second paper feeding channel 430, and the distance between the second predetermined position and the first predetermined position from the paper feeding of the printing channel 440 is equal.

Since the first predetermined position and the second predetermined position are equal to each other in the paper feeding distance from the printing channel 440, the distance that the thermal transfer ribbon 920 retreats following the first printing paper 910 is equal to the distance that the thermal transfer ribbon 920 advances following the second printing paper 910, so that when the thermal transfer ribbon 920 and the second printing paper 910 advance into the printing channel 440, the boundary between the non-printed part and the printed part of the thermal transfer ribbon 920 is exactly located in the printing channel 440, which will not cause waste of the thermal transfer ribbon 920, and meanwhile, in the moving process of the printing paper 910 and the thermal transfer ribbon 920, relative friction between the printing paper 910 and the thermal transfer ribbon 920 will not occur.

Further, after the second driving mechanism 520 drives the thermal transfer ribbon 920 and the second printing paper 910 to advance synchronously, the method further includes the following steps:

when the second printing paper 910 advances into the printing path 440, the printhead 260 starts a printing job.

At this time, the printhead 260 does not operate during the switching between the first printing paper 910 and the second printing paper 910, which saves more power.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (29)

1. A carbon ribbon cartridge mounting structure is characterized by comprising a printing panel, a carbon ribbon cartridge and a limiting block, wherein the carbon ribbon cartridge and the limiting block are arranged on the same side of the printing panel;

when the limiting block is at the first position, the carbon ribbon box is positioned between the limiting block and the printing panel, and the limiting block and the printing panel are matched to limit the carbon ribbon box to move towards the direction far away from the printing panel;

when the limiting block is at the second position, the limiting block is separated from the carbon tape box, and the carbon tape box can move in the direction away from the printing panel;

a first rotatable support and a second rotatable support are arranged in the carbon ribbon box, and the first rotatable support and the second rotatable support are arranged in parallel at intervals; the first rotating support is used for being in transmission fit with a carbon ribbon recovery roll, and the second rotating support is used for being in transmission fit with a carbon ribbon supply roll.

2. The ribbon cartridge mounting structure according to claim 1, wherein the positioning structure includes a first positioning portion, a second positioning portion, a third positioning portion, and a fourth positioning portion;

the first positioning part and the third positioning part are arranged on two lateral sides of the carbon tape box at intervals, and the first positioning part and the third positioning part are matched to limit the lateral movement of the carbon tape box; the second positioning part and the fourth positioning part are arranged on two sides of the carbon tape box in the longitudinal direction at intervals, and the second positioning part and the fourth positioning part are matched to limit the longitudinal movement of the carbon tape box.

3. The carbon ribbon cartridge mounting structure according to claim 2,

the printing panel is provided with a sinking groove, the carbon tape box is arranged in the sinking groove, the side walls of the two transverse sides of the sinking groove are respectively the first positioning part and the third positioning part, and the side walls of the two longitudinal sides of the sinking groove are respectively the second positioning part and the fourth positioning part;

or the printing panel is provided with a first partition plate, a second partition plate, a third partition plate and a fourth partition plate, the first partition plate and the third partition plate are arranged on two transverse sides of the carbon tape box at intervals, the first partition plate is the first positioning portion, the third partition plate is the third positioning portion, the second partition plate and the fourth partition plate are arranged on two longitudinal sides of the carbon tape box at intervals, the second partition plate is the second positioning portion, and the fourth partition plate is the fourth positioning portion.

4. The cartridge mounting structure of claim 1, wherein the stopper is slidably disposed on the printing panel.

5. The carbon ribbon cartridge mounting structure of claim 4, further comprising a reset member, wherein one end of the reset member abuts against the printing panel, the other end of the reset member abuts against the limiting block, and the reset member is used for driving the limiting block to move towards the direction close to the carbon ribbon cartridge.

6. The ribbon cartridge mounting structure according to claim 5, wherein the printing panel is provided with a guide groove, the stopper is slidably fitted in the guide groove, the reset member is disposed in the guide groove, one end of the elastic member abuts against a groove wall of the guide groove, and the other end of the reset member abuts against the stopper.

7. A carbon ribbon cartridge mounting structure as claimed in any one of claims 1 to 6 wherein there are two of the stoppers, the two stoppers being spaced apart on opposite sides of the carbon ribbon cartridge.

8. The cartridge mounting structure of claim 1, wherein the first rotatable mount (211) and the second rotatable mount (221) are a driving mount and a driven mount for each other during use of the printer.

9. The carbon ribbon cartridge mounting structure of claim 8, further comprising a first driving seat and a second driving seat rotatably disposed in the carbon ribbon cartridge, wherein the first driving seat is in driving engagement with the first rotating support, and the second driving seat is in driving engagement with the second rotating support;

when the first driving seat is a driving support and the second rotating support is a driven support, the first rotating support rotates in the positive direction, and the second rotating support rotates in the positive direction through a carbon ribbon;

when the second rotating support is a driving support and the first rotating support is a driven support, the second rotating support rotates reversely, and the first rotating support rotates reversely through the carbon ribbon.

10. The ribbon cartridge mounting structure of claim 9, wherein a first driving plate is disposed between the first driving seat and the first rotating support, one side of the first driving plate abuts against the first driving seat, and the other side of the first driving plate abuts against the first rotating support;

and a second driving sheet is arranged between the second driving seat and the second rotating support, one side of the second driving sheet is abutted against the second driving seat, and the other side of the second driving sheet is abutted against the second rotating support.

11. The ribbon cartridge mounting structure according to claim 9 or 10, further comprising a first input shaft and a second input shaft;

the first input shaft is rotatably connected with the carbon ribbon box, one end of the first input shaft is positioned outside the carbon ribbon box, the other end of the first input shaft is positioned in the carbon ribbon box, the first driving seat is synchronously and rotatably connected with the first input shaft, and the first rotating support is rotatably connected with the first input shaft;

the second input shaft is rotatably connected with the carbon ribbon box, one end of the second input shaft is positioned outside the carbon ribbon box, the other end of the second input shaft is positioned in the carbon ribbon box, the second driving seat is synchronously and rotatably connected with the second input shaft, and the second rotating support is rotatably connected with the second input shaft.

12. The carbon ribbon cartridge mounting structure of claim 11, wherein the first driving seat is provided with a first rotation stopping hole, the first rotating support is provided with a first rotation stopping hole, the first driving seat is sleeved on the first input shaft through the first rotation stopping hole and is synchronously and rotatably matched with the first input shaft, and the first rotating support is sleeved on the first input shaft through the first rotation stopping hole and is rotatably matched with the first input shaft;

the second drive seat is provided with a second rotation stopping hole, the second rotating support is provided with a second rotation stopping hole, the second drive seat is sleeved on the second input shaft through the second rotation stopping hole and is in synchronous rotating fit with the second input shaft, and the second rotating support is sleeved on the second input shaft through the second rotation stopping hole and is in rotatable fit with the second input shaft.

13. The carbon ribbon cartridge mounting structure of claim 11, further comprising a first gear and a second gear,

the first gear is positioned outside the carbon tape box and is synchronously and rotationally connected with the first input shaft, and the first gear is used for being in transmission fit with a printer driving mechanism;

the second gear is located outside the carbon tape box and is in synchronous rotating connection with the second input shaft, and the second gear is used for being in transmission fit with the printer driving mechanism.

14. The carbon ribbon cartridge mounting structure according to claim 11, wherein the carbon ribbon cartridge is provided with a first support hole and a second support hole;

a first rotating bearing is arranged in the first supporting hole, and the first input shaft is arranged in the first rotating bearing;

and a second rotating bearing is arranged in the second supporting hole, and the second input shaft is arranged in the second rotating bearing.

15. The carbon ribbon cartridge mounting structure according to claim 8, wherein the carbon ribbon cartridge is provided with a first mounting port and a second mounting port, the first mounting port and the second mounting port are provided correspondingly, and the first mounting port and the second mounting port are respectively located on both sides of the carbon ribbon between the carbon ribbon supply roll and the carbon ribbon recovery roll;

the printing panel is provided with a printing head corresponding to the first mounting port and the second mounting port, the printing head penetrates through the first mounting port and the second mounting port and protrudes out of the carbon tape box, and the printing head is used for abutting the carbon tape between the carbon tape supply roll and the carbon tape recovery roll.

16. A ribbon cartridge mounting structure according to claim 15, wherein the print head is provided with first and second guide projections provided at intervals in an axial direction of the ribbon supply roll, the first and second guide projections being adapted to engage with the ribbon between the ribbon supply roll and the ribbon recovery roll.

17. A printer characterized by comprising a paper feeding section and a printing section, the printing section comprising the carbon ribbon cartridge mounting structure of any one of claims 9 to 14, a first paper feeding channel is formed between the paper feeding part and the printing part, a printing roller is arranged on the side surface of the paper feeding part close to the printing part, the printing head of the printing part is arranged opposite to the printing roller, a printing channel is formed between the printing roller and the printing head, a second paper feeding channel is arranged in the paper feeding part, the first paper feeding channel and the second paper feeding channel are both communicated with the printing channel, the paper feeding part comprises a first driving mechanism which is used for driving printing paper to move in the first paper feeding channel or the second paper feeding channel respectively, the printing part comprises a second driving mechanism, and the second driving mechanism is in transmission fit with the first driving seat or the second driving seat.

18. The printer of claim 17, wherein the second drive mechanism includes a first motor in driving engagement with the first drive base and a second motor in driving engagement with the second drive base, the first motor and the second motor both being single-turn motors.

19. The printer of claim 17, wherein the second drive mechanism includes a third motor drivingly engaged with the second drive socket, and the first drive socket drivingly engaged with the print roller.

20. The printer of claim 19, wherein the print roller is geared with the first drive socket gear.

21. The printer according to claim 17, wherein the printing section further comprises a first panel, and the sheet feeding section further comprises a second panel and a third panel; the first panel, the second panel and the third panel are arranged at intervals in sequence, the first panel and the second panel are matched to form the first paper feeding channel, and the second panel and the third panel are matched to form the second paper feeding channel; the first panel is provided with a first through hole, the second panel is provided with a third through hole and a second through hole corresponding to the first through hole, and the third panel is provided with a fourth through hole corresponding to the third through hole;

a first connecting column penetrates through the first through hole and the second through hole, a first abutting block and a second abutting block are arranged in the axial direction of the first connecting column at intervals, the first abutting block abuts against one side, far away from the second panel, of the first panel, and the second abutting block abuts against one side, far away from the first panel, of the second panel;

wear to be equipped with the second spliced pole in third perforation and the fourth perforation, the interval is provided with third butt piece and fourth butt piece in the axial of second spliced pole, one side butt that the third panel was kept away from to third butt piece and second panel, one side butt that the second panel was kept away from to fourth butt piece and third panel.

22. The printer of claim 21, wherein the first connecting post is rotatably engaged with the first through hole and the second through hole, an inner wall of the second through hole is provided with a first through groove engaged with the second abutting block, and the first through groove is arranged along a direction from the second through hole to the first through hole; when the first connecting column rotates to the first position, the second butting block corresponds to the first through groove, and the first connecting column can slide in the direction from the second through hole to the first through hole; when the first connecting column rotates to the second position, the second abutting block is separated from the first through groove, and the second abutting block abuts against one side, far away from the first panel, of the second panel;

the second connecting column is rotatably matched with the third through hole and the fourth through hole, a second through groove matched with the third abutting block is formed in the inner wall of the third through hole, and the second through groove is formed in the direction from the third through hole to the third through hole; when the second connecting column rotates to the first position, the fourth butt joint block corresponds to the second through groove, and the second connecting column can slide in the direction from the fourth through hole to the third through hole; when the second connecting column rotates to the second position, the fourth butt joint block is separated from the second through groove, and the fourth butt joint block is in butt joint with one side, far away from the second panel, of the third panel.

23. The printer of claim 22, wherein there are two of said second abutment blocks, two of said second abutment blocks being circumferentially spaced along said first connecting post; the two first through grooves correspond to the two second butting blocks one by one;

the number of the fourth butt joint blocks is two, and the two fourth butt joint blocks are arranged at intervals along the circumferential direction of the second connecting column; the number of the second through grooves is two, and the two second through grooves correspond to the two fourth abutting blocks one to one.

24. The printer according to claim 21, wherein a first elastic member is provided between the first panel and the first abutting block, one side of the first elastic member abuts the first panel, and the other side of the first elastic member abuts the first abutting block;

and a second elastic piece is arranged between the second panel and the third abutting block, one side of the second elastic piece is abutted against the second panel, and the other side of the second elastic piece is abutted against the third abutting block.

25. The printer of claim 22, wherein a first limit portion and a second limit portion engaged with the first abutting block are provided on a side of the first panel away from the second panel; when the first abutting block abuts against the first limiting part, the second abutting block corresponds to the first through groove, and the first connecting column can slide in the direction from the second through hole to the first through hole; when the first abutting block abuts against the second limiting part, the second abutting block is separated from the first through groove, and the second abutting block abuts against one side, far away from the first panel, of the second panel;

a third limiting part and a fourth limiting part which are matched with the third abutting block are arranged on one side, far away from the third panel, of the second panel; when the third abutting block abuts against the third limiting part, the fourth abutting block corresponds to the second through groove, and the second connecting column can slide in the direction from the fourth through hole to the third through hole; when the third butt joint block is in butt joint with the fourth limiting part, the fourth butt joint block is separated from the second through groove, and the fourth butt joint block is in butt joint with one side, far away from the second panel, of the third panel.

26. The printer according to claim 25, wherein a side of the first panel away from the second panel is provided with a first arc-shaped projection engaged with the first abutting block, one end of the first arc-shaped projection is the first position-limiting portion, and the other end of the first arc-shaped projection is the second position-limiting portion;

one side of the second panel far away from the third panel is provided with a second arc-shaped convex block matched with the third abutting block, one end of the second arc-shaped convex block is the third limiting part, and the other end of the second arc-shaped convex block is the fourth limiting part.

27. The printer of claim 22, wherein an end of the first abutment block remote from the second abutment block is provided with a first guiding taper cooperating with the second through hole;

and a second guide conical surface matched with the fourth through hole is arranged at one end, far away from the fourth abutting block, of the second abutting block.

28. The printer of claim 22, wherein the first abutting block is provided with a first abutting guide surface matched with the second panel at one end close to the second abutting block, and the first abutting guide surface is obliquely arranged relative to the rotating direction of the first connecting column;

one end of the third abutting block, which is close to the second abutting block, is provided with a second abutting guide surface matched with the second panel, and the second abutting guide surface is obliquely arranged relative to the rotating direction of the second connecting column.

29. The printer of claim 22, wherein the first connecting post is provided with a first stop cooperating with the first panel, the first stop being located between the first panel and the second panel, the first stop being configured to limit a range of sliding movement of the first connecting post in a direction from the second through hole to the first through hole;

the second connecting column is provided with a second limiting part matched with the second panel, the second limiting part is located between the second panel and the third panel, and the second limiting part is used for limiting the sliding range of the second connecting column from the fourth perforation to the third perforation.

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