Label printer with upturning cover

Abstract

The utility model provides a label printer with an upturning type machine cover, and belongs to the technical field of printers. The problem that an existing label printer is high in printing cost is solved. The label printer with the upturning type machine cover comprises a printer body hinged to the machine cover, the printer body is provided with a containing cavity located on the inner side of the machine cover, the containing cavity is internally provided with a thermal transfer ribbon box, the thermal transfer ribbon box is provided with a printing channel, the printer body is provided with a printing head located in the printing channel, and the machine cover is provided with a printing rubber roller which is pressed on the printing head when covered. A printing paper roller located on one side of the printing channel, a thermal transfer ribbon roller and a recovery roller located on the other side of the printing channel are arranged in the thermal transfer ribbon box, and a power mechanism which is used for driving the printing paper roller and the recovery roller to rotate and can prevent rotation is arranged in the printer body. The anti-rotation function is integrated on the power mechanism, so that the structure of the thermal transfer ribbon box is simplified, and the printing cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of printers and relates to a cover flip-up label printer. Background Art

[0002] A label printer is a device that prints information on a label. When printing, the print head is pressed against the print roller, and the label and the carbon ribbon pass between the print head and the print roller. The movement drives the print roller to rotate to achieve the printing process. The carbon ribbon and print paper roll of the existing label printer are independent consumables. Since independent carbon ribbon and print paper are required, the existing printer is difficult to assemble and has a large size.

[0003] To this end, a Chinese patent discloses a thermal transfer printer mechanism and a printer [application publication number is CN114851717A]. When the ribbon transmission gear moves, the recovery shaft power rod is driven to rotate through the anti-rotation structure. The recovery shaft power rod drives the recovery shaft damping torsion spring in the middle to rotate through the tight-fitting friction force. The recovery shaft damping torsion spring drives the ribbon recovery shaft to rotate through the pin and the damping spring on the ribbon recovery shaft, generating power for the ribbon to move forward. When the rotation speed of the ribbon transmission gear is too fast, the force generated by the ribbon recovery shaft on the recovery shaft damping torsion spring pin will increase, causing the inner diameter of the recovery shaft damping torsion spring to increase. When the generated force exceeds the damping value, the recovery shaft damping torsion spring and the recovery shaft power rod generate relative movement, so that the force on the ribbon recovery shaft does not exceed the limit value at all times, thereby preventing the ribbon from being subjected to excessive force.

[0004] The ribbon cartridge is a consumable material of the printer, and the cost of the ribbon cartridge directly affects the printing cost. The above components such as the recovery shaft power rod, recovery shaft resistance spring, and pressure spring that play a role in slipping are installed in the ribbon cartridge, which increases the cost of the ribbon cartridge and leads to high printing cost. Utility Model Content

[0005] The utility model aims to solve the above problems in the prior art and proposes a cover flip-up label printer which can reduce printing costs.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A flip-up label printer comprises a printer body hinged with a cover, the printer body is provided with a accommodating cavity located on the inner side of the cover, a carbon ribbon box is provided in the accommodating cavity, a printing channel is provided on the carbon ribbon box, a print head located in the printing channel is provided on the printer body, a printing rubber roller is provided on the cover to be pressed on the print head when the cover is closed, a printing paper roller, a carbon ribbon roller and a recovery roller located on one side of the printing channel are provided in the carbon ribbon box, and a power mechanism for driving the printing rubber roller and the recovery roller to rotate and preventing them from rotating is provided in the printer body.

[0008] The printing paper roller, carbon ribbon roller, recycling roller and printing rubber roller are parallel to each other. The carbon ribbon drawn from the carbon ribbon roller passes between the print head and the printing rubber roller and is wound on the recycling roller. The paper tape drawn from the printing paper roller passes between the print head and the printing rubber roller and extends out from the paper outlet. The paper outlet is located at the joint between the free end of the machine cover and the printer body. The anti-rotation function is integrated into the power mechanism, which simplifies the structure of the carbon ribbon box and reduces the printing cost.

[0009] In the above-mentioned cover flip-up label printer, the power mechanism includes a motor arranged in the printer body, a driving gear arranged on the motor output shaft, a first output gear and a second output gear transmission-connected to the driving gear, a first driven gear is coaxially arranged on the printing rubber roller, and when the cover is closed, the first driven gear is meshed with the first output gear, and a second driven gear is coaxially arranged on the recovery roller, and when the carbon ribbon box is located in the accommodating cavity, the second driven gear is meshed with the second output gear.

[0010] When the motor is working, it drives the driving gear to rotate, and the driving gear drives the first output gear and the second output gear to rotate, thereby driving the first driven gear and the second driven gear to rotate, thereby realizing the rotation of the printing rubber roller and the recovery roller.

[0011] In the above-mentioned flip-up label printer, a gear shaft is fixed on the printer body, and an intermediate gear connected to the driving gear is rotatably engaged on the gear shaft. The second output gear is rotatably engaged on the gear shaft, and a first damping spring with one end connected to the intermediate gear is sleeved on the gear shaft, and the other end of the first damping spring is connected to the second output gear.

[0012] When the middle gear rotates, the first damping spring is twisted. When the damping value of the first damping spring is exceeded, the first damping spring drives the second output gear to rotate, and the second output gear drives the second driven gear to rotate, thereby realizing the rotation of the recycling roller. When the middle gear stops rotating, the first damping spring resets and drives the second output gear to rotate further, tightening the ribbon to prevent slipping.

[0013] In the above-mentioned cover flip-up label printer, a first double gear and a second double gear are rotatably provided on the printer body, the driving gear is meshed with the large gear of the first double gear, the small gear of the first double gear is meshed with the large gear of the second double gear, the large gear of the second double gear is meshed with the intermediate gear, and the first output gear is meshed with the small gear of the second double gear.

[0014] In the above-mentioned flip-up label printer, a plurality of circumferentially evenly distributed limiting grooves are provided in the second driven gear, an elastic claw that is inserted into the limiting grooves is provided on the carbon ribbon box, and an unlocking structure for disengaging the elastic claw on the carbon ribbon box placed in the accommodating cavity from the limiting grooves is provided in the printer body.

[0015] When the ribbon cartridge is not placed in the accommodating cavity, the elastic claw is stuck in the limiting groove, limiting the rotation of the recovery roller. When the ribbon cartridge is placed in the accommodating cavity, the elastic claw is disengaged from the limiting groove under the action of the unlocking structure, so that the recovery roller is in an unlocked state.

[0016] In the above-mentioned flip-up label printer, the unlocking structure includes a limit stop edge arranged in the printer body, the elastic claw is provided with a boss, and the boss is provided with a guide slope. When the carbon ribbon box is placed in the accommodating cavity, the limit stop edge squeezes the guide slope to make the elastic claw disengage from the limit groove.

[0017] The limit stop extends along the direction of insertion of the carbon ribbon cassette, and the extension direction of the elastic claw is the same as the extension direction of the limit stop. The boss is located on the side of the elastic claw facing the second driven gear. When the carbon ribbon cassette is placed into the accommodating cavity, the limit stop squeezes the guide slope to cause the elastic claw to elastically deform toward the side away from the limit groove, so that the part of the elastic claw stuck in the limit groove is separated from the limit groove. When the carbon ribbon cassette is installed in place, the elastic claw is continuously in an elastically deformed state under the action of the limit stop and will not be stuck in the limit groove.

[0018] In the above-mentioned flip-up label printer, the carbon ribbon box is provided with a first cover body and a second cover body that can be opened and closed, the first cover body covers the carbon ribbon roller, the second cover body covers the recovery roller, and the second cover body is provided with a carbon ribbon guide part for tensioning the carbon ribbon to the printing channel when the second cover body is closed.

[0019] The carbon ribbon roller and the recovery roller are arranged on the outside of the carbon ribbon box, and a first cover body and a second cover body are provided to cover them respectively, so as to facilitate the installation and replacement of the carbon ribbon. When the second cover body is closed, the carbon ribbon guide part can tighten the carbon ribbon to the printing channel without winding the ribbon.

[0020] In the above-mentioned flip-up label printer, the first cover body is rotatably mounted on the carbon ribbon box via a first rotating shaft, the carbon ribbon box is provided with a first arc groove, the first cover body is provided with a second arc groove, when the first cover body is closed, the first arc groove and the second arc groove constitute a first mounting hole, the carbon ribbon roller is rotatably engaged in the first mounting hole, and the carbon ribbon box is provided with a first elastic buckle for buckling the first cover body when the first cover body is closed.

[0021] During installation, the first cover is separated from the restriction of the first elastic buckle, the first cover is opened, and then the carbon ribbon roller is placed in the first arc groove, and the first cover is closed, so that the carbon ribbon roller rotates and fits in the first mounting hole. A clearance space is formed in the middle of the first mounting hole to provide space for the carbon ribbon, and an axial limit stop is provided, through which the axial movement of the carbon ribbon roller can be limited. After the first cover is closed, a first carbon ribbon port for the carbon ribbon to pass through is provided between the free end of the first cover and the carbon ribbon box.

[0022] In the above-mentioned flip-up label printer, the second cover body is rotatably arranged on the carbon ribbon box through the second rotating shaft, the carbon ribbon box is provided with a third arc groove, and the second cover body is provided with a fourth arc groove. When the second cover body is closed, the third arc groove and the fourth arc groove constitute a second mounting hole, the recovery roller is rotatably fitted in the second mounting hole, the carbon ribbon guide part is arranged at one end of the second cover body away from the second rotating shaft, and the carbon ribbon box is provided with a second elastic buckle for buckling the carbon ribbon guide part when the second cover body is closed.

[0023] During installation, the ribbon guide is separated from the restriction of the second elastic buckle, the second cover is opened, and then the recovery roller is placed in the third arc groove, and the second cover is closed, so that the recovery roller rotates and fits in the second mounting hole. A clearance space is formed in the middle of the second mounting hole to provide space for winding the ribbon, and an axial limit stop is provided, through which the axial movement of the recovery roller can be limited. After the second cover is closed, a second ribbon port for the ribbon to pass through is provided between the ribbon guide and the ribbon box, and the ribbon drawn from the ribbon roller is wound onto the recovery roller through the first ribbon port and the second ribbon port.

[0024] In the above-mentioned flip-up label printer, the carbon ribbon roller has a coaxially arranged first step hole and a second step hole located at the outer end of the first step hole, the aperture of the second step hole is larger than the aperture of the first step hole, and a second damping spring is tightly fitted in the first step hole, and the other end of the second damping spring passes through the second step hole and is connected to the carbon ribbon box.

[0025] The ribbon shaft rotates under the traction of the ribbon, causing the second damping spring to twist. When the twisting force is greater than the friction between the second resistance spring and the first stepped hole, the twisted second damping spring rotates with the ribbon shaft. When the recycling roller stops, the ribbon shaft stops, and the second damping spring resets, pulling the ribbon back in a small range and tightening the ribbon.

[0026] Compared with the existing technology, this machine cover flip label printer has the following advantages:

[0027] The anti-rotation function is set in the printer body, which simplifies the structure of the carbon ribbon box and reduces the printing cost; the rotation of the recovery roller in the carbon ribbon box that is not in place is limited by the limit groove and the elastic claw to avoid the waste of carbon ribbon, and the recovery roller in place is in an unlocked state through the unlocking structure to ensure the normal operation of the printer; the carbon ribbon roller and the recovery roller are set on the outside of the carbon ribbon box, and a first cover body and a second cover body that can be opened and closed are provided to facilitate the installation and replacement of the carbon ribbon; when the second cover body is closed, the carbon ribbon guide part can tighten the carbon ribbon to the printing channel, without the need to wind the ribbon, thereby improving the assembly efficiency; a second damping spring is set in the carbon ribbon shaft to keep the carbon ribbon straightened at all times. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural diagram of a flip-up label printer on the cover.

[0029] Figure 2 It is another structural schematic diagram of a flip-up label printer on a cover.

[0030] Figure 3 It is a partial structural diagram of a flip-up label printer on the cover.

[0031] Figure 4 It is a schematic diagram of the structure of the power mechanism in the cover flip-up label printer.

[0032] Figure 5 It is a cross-sectional view of the power mechanism in the cover flip-up label printer.

[0033] Figure 6 It is a structural diagram of the carbon ribbon box.

[0034] Figure 7 This is a cross-sectional view of the ribbon cassette passing the recovery roller.

[0035] Figure 8 This is a cross-sectional view of the ribbon cassette passing the ribbon roller.

[0036] Fig. 9 yes Figure 8 The cross-sectional view is shown with the second damping spring omitted.

[0037] In the figure, 1, machine cover; 2, printer body; 3, accommodating chamber; 4, carbon ribbon box; 5, printing channel; 6, print head; 7, printing rubber roller; 8, carbon ribbon roller; 9, recovery roller; 10, driving gear; 11, first output gear; 12, second output gear; 13, first driven gear; 14, second driven gear; 15, gear shaft; 16, intermediate gear; 17, first damping spring; 18, first double gear; 19, second double gear; 20, limiting groove; 21, elastic claw; 22, limiting stop edge; 23, boss; 24, first cover body; 25, second cover body; 26, carbon ribbon guide; 27, first elastic buckle; 28, second elastic buckle; 29, first stepped hole; 30, second stepped hole; 31, second damping spring. DETAILED DESCRIPTION

[0038] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0039] like Figure 1 and Figure 2 The flip-up label printer with a cover 1 shown in the figure comprises a printer body 2 hinged with the cover 1, and the printer body 2 is provided with a receiving cavity 3 located inside the cover 1, and the receiving cavity 3 is used to place a ribbon cartridge 4. A printing channel 5 is provided on the ribbon cartridge 4, a print head 6 located in the printing channel 5 is provided on the printer body 2, a printing rubber roller 7 pressed on the print head 6 when the cover is closed is provided on the machine cover 1, a printing paper roller and a ribbon roller 8 located on one side of the printing channel 5 and a recycling roller 9 located on the other side of the printing channel 5 are provided in the ribbon cartridge 4, and a power mechanism for driving the printing rubber roller 7 and the recycling roller 9 to rotate and preventing rotation is provided in the printer body 2.

[0040] The printing paper roller, the carbon ribbon roller 8, the recycling roller 9 and the printing rubber roller 7 are parallel to each other. The carbon ribbon drawn from the carbon ribbon roller 8 passes between the printing head 6 and the printing rubber roller 7 and is wound on the recycling roller 9. The paper tape drawn from the printing paper roller passes between the printing head 6 and the printing rubber roller 7 and extends out from the paper outlet. The paper outlet is located at the joint between the free end of the machine cover 1 and the printer body 2. The anti-rotation function is integrated into the power mechanism, which simplifies the structure of the carbon ribbon box 4 and reduces the printing cost.

[0041] like Figure 3-5As shown, the power mechanism includes a motor arranged in the printer body 2, a driving gear 10 arranged on the output shaft of the motor, a first output gear 11 and a second output gear 12 which are transmission-connected with the driving gear 10, a first driven gear 13 is coaxially arranged on the printing rubber roller 7, and the first driven gear 13 meshes with the first output gear 11 when the machine cover 1 is closed, and a second driven gear 14 is coaxially arranged on the recovery roller 9, and the second driven gear 14 meshes with the second output gear 12 when the carbon ribbon box 4 is located in the accommodating chamber 3. When the motor is working, it drives the driving gear 10 to rotate, and the driving gear 10 drives the first output gear 11 and the second output gear 12 to rotate, thereby driving the first driven gear 13 and the second driven gear 14 to rotate, thereby realizing the rotation of the printing rubber roller 7 and the recovery roller 9.

[0042] like Figure 5 As shown, a gear shaft 15 is fixed on the printer body 2, and an intermediate gear 16 connected to the driving gear 10 is rotatably matched on the gear shaft 15, and the second output gear 12 is rotatably matched on the gear shaft 15. A first damping spring 17 connected to the intermediate gear 16 at one end is sleeved on the gear shaft 15, and the other end of the first damping spring 17 is connected to the second output gear 12. When the intermediate gear 16 rotates, the first damping spring 17 is twisted. When the damping value of the first damping spring 17 is exceeded, the first damping spring 17 drives the second output gear 12 to rotate, and the second output gear 12 drives the second driven gear 14 to rotate, thereby realizing the rotation of the recovery roller 9. When the intermediate gear 16 stops rotating, the first damping spring 17 resets to drive the second output gear 12 to rotate further, tightening the carbon ribbon to prevent slipping.

[0043] like Figure 4 and Figure 5 As shown, a first double gear 18 and a second double gear 19 are rotatably provided on the printer body 2, the driving gear 10 is meshed with the large gear of the first double gear 18, the small gear of the first double gear 18 is meshed with the large gear of the second double gear 19, the large gear of the second double gear 19 is meshed with the intermediate gear 16, and the first output gear 11 is meshed with the small gear of the second double gear 19.

[0044] like Figure 6 As shown, a plurality of circumferentially evenly distributed limiting grooves 20 are provided in the second driven gear 14, an elastic claw 21 is provided on the carbon ribbon cartridge 4 to be inserted into the limiting groove 20, and an unlocking structure is provided in the printer body 2 for disengaging the elastic claw 21 on the carbon ribbon cartridge 4 placed in the accommodating chamber 3 from the limiting groove 20. When the carbon ribbon cartridge 4 is not placed in the accommodating chamber 3, the elastic claw 21 is stuck in the limiting groove 20, limiting the rotation of the recovery roller 9. When the carbon ribbon cartridge 4 is placed in the accommodating chamber 3, the elastic claw 21 is disengaged from the limiting groove 20 under the action of the unlocking structure, so that the recovery roller 9 is in an unlocked state.

[0045] like Figure 1As shown, the unlocking structure includes a limit stop edge 22 disposed in the printer body 2. Figure 6 and Figure 7 As shown, a boss 23 is provided on the elastic claw 21, and a guide slope is provided on the boss 23. When the ribbon cartridge 4 is placed in the accommodating cavity 3, the limit stopper 22 presses the guide slope to make the elastic claw 21 disengage from the limit groove 20. The limit stopper 22 extends along the direction of the ribbon cartridge 4 being placed, and the extension direction of the elastic claw 21 is the same as the extension direction of the limit stopper 22. The boss 23 is located on the side of the elastic claw 21 facing the second driven gear 14. When the ribbon cartridge 4 is placed in the accommodating cavity 3, the limit stopper 22 presses the guide slope to make the elastic claw 21 elastically deformed toward the side away from the limit groove 20, so that the part of the elastic claw 21 stuck in the limit groove 20 is disengaged from the limit groove 20. When the ribbon cartridge 4 is installed in place, the elastic claw 21 is continuously in an elastic deformation state under the action of the limit stopper 22 and will not be stuck in the limit groove 20.

[0046] like Figure 6 As shown, the carbon ribbon box 4 is provided with a first cover body 24 and a second cover body 25 which can be opened and closed, the first cover body 24 covers the carbon ribbon roller 8, the second cover body 25 covers the recovery roller 9, and the second cover body 25 is provided with a carbon ribbon guide part 26 which is used to tension the carbon ribbon to the printing channel 5 when the second cover body 25 is closed.

[0047] The carbon ribbon roller 8 and the recovery roller 9 are arranged on the outside of the carbon ribbon box 4, and a first cover 24 and a second cover 25 are provided to cover them respectively, so as to facilitate the installation and replacement of the carbon ribbon. When the second cover 25 is closed, the carbon ribbon guide 26 can tighten the carbon ribbon to the printing channel 5 without winding the ribbon.

[0048] like Figure 6 As shown, the first cover body 24 is rotatably disposed on the carbon ribbon box 4 through the first rotating shaft, the carbon ribbon box 4 is provided with a first arc groove, and the first cover body 24 is provided with a second arc groove. When the first cover body 24 is closed, the first arc groove and the second arc groove constitute a first mounting hole, and the carbon ribbon roller 8 is rotatably fitted in the first mounting hole. The carbon ribbon box 4 is provided with a first elastic buckle 27 for buckling the first cover body 24 when the first cover body 24 is closed.

[0049] During installation, the first cover 24 is separated from the restriction of the first elastic buckle 27, the first cover 24 is opened, and then the carbon ribbon roller 8 is placed in the first arc groove, and the first cover 24 is closed, so that the carbon ribbon roller 8 is rotated and fitted in the first mounting hole. A clearance space is formed in the middle of the first mounting hole to provide space for the carbon ribbon, and an axial limit stop 22 is provided, through which the axial movement of the carbon ribbon roller 8 can be limited. After the first cover 24 is closed, a first carbon ribbon port for the carbon ribbon to pass through is provided between the free end of the first cover 24 and the carbon ribbon box 4.

[0050] like Figure 6As shown, the second cover body 25 is rotatably disposed on the carbon ribbon box 4 through the second rotating shaft, the carbon ribbon box 4 is provided with a third arc groove, and the second cover body 25 is provided with a fourth arc groove. When the second cover body 25 is closed, the third arc groove and the fourth arc groove constitute a second mounting hole, and the recovery roller 9 is rotatably engaged in the second mounting hole, and the carbon ribbon guide portion 26 is disposed at one end of the second cover body 25 away from the second rotating shaft, and the carbon ribbon box 4 is provided with a second elastic buckle 28 for buckling the carbon ribbon guide portion 26 when the second cover body 25 is closed.

[0051] During installation, the ribbon guide 26 is separated from the restriction of the second elastic buckle 28, the second cover 25 is opened, and then the recovery roller 9 is placed in the third arc groove, and the second cover 25 is closed, so that the recovery roller 9 is rotated and fitted in the second mounting hole. A clearance space is formed in the middle of the second mounting hole to provide space for winding the ribbon, and an axial limit stop 22 is provided, through which the axial movement of the recovery roller 9 can be limited. After the second cover 25 is closed, there is a second ribbon port for the ribbon to pass through between the ribbon guide 26 and the ribbon box 4, and the ribbon drawn from the ribbon roller 8 is wound onto the recovery roller 9 through the first ribbon port and the second ribbon port.

[0052] like Fig. 9 As shown, the carbon ribbon roller 8 has a coaxially arranged first stepped hole 29 and a second stepped hole 30 located at the outer end of the first stepped hole 29, and the aperture of the second stepped hole 30 is larger than the aperture of the first stepped hole 29. Figure 8 As shown, a second damping spring 31 is tightly fitted in the first stepped hole 29 , and the other end of the second damping spring 31 passes through the second stepped hole 30 and is connected to the carbon ribbon box 4 .

[0053] The ribbon shaft rotates under the pulling action of the ribbon, thereby twisting the second damping spring 31. When the twisting force is greater than the friction between the second resistance spring and the first stepped hole 29, the twisted second damping spring 31 rotates with the ribbon shaft. When the recycling roller 9 stops rotating, the ribbon shaft stops rotating, and the second damping spring 31 is reset at this time, pulling the ribbon back in a small range and tensioning the ribbon.

[0054] A guide plate extending to the printing channel 5 is provided on the carbon ribbon box 4. The paper ribbon led out from the printing paper roller is located on one side of the guide plate, and the carbon ribbon led out from the carbon ribbon roller 8 is located on the other side of the guide plate, which can avoid premature contact between the carbon ribbon and the paper ribbon.

[0055] In this embodiment, the ribbon cartridge 4 includes a left half shell and a right half shell that are interlocked, a left half shaft is provided in the left half shell, a right half shaft is provided in the right half shell, one end of the printing paper roller is sleeved on the left half shaft, and the other end is sleeved on the right half shaft. It is convenient to install the printing paper roller, the first cover body 24 and the second cover body 25 on the ribbon cartridge 4.

[0056] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A cover flip-up label printer, characterized in that: The invention comprises a printer body (2) hingedly provided with a cover (1), the printer body (2) being provided with a receiving cavity (3) located on the inner side of the cover (1), the receiving cavity (3) being provided with a carbon ribbon box (4), the carbon ribbon box (4) being provided with a printing channel (5), the printer body (2) being provided with a print head (6) located in the printing channel (5), the cover (1) being provided with a printing rubber roller (7) pressed against the print head (6) when the cover is closed, the carbon ribbon box (4) being provided with a printing paper roller located on one side of the printing channel (5), a carbon ribbon roller (8) and a recycling roller (9) located on the other side of the printing channel (5), and the printer body (2) being provided with a power mechanism for driving the printing rubber roller (7) and the recycling roller (9) to rotate and being capable of preventing rotation.

2. The cover flip-up label printer according to claim 1, characterized in that: The power mechanism comprises a motor arranged in a printer body (2), a driving gear (10) arranged on an output shaft of the motor, a first output gear (11) and a second output gear (12) which are transmission-connected to the driving gear (10); a first driven gear (13) is coaxially arranged on the printing rubber roller (7); when the machine cover (1) is closed, the first driven gear (13) meshes with the first output gear (11); a second driven gear (14) is coaxially arranged on the recovery roller (9); when the carbon ribbon box (4) is located in the accommodating chamber (3), the second driven gear (14) meshes with the second output gear (12).

3. The cover flip-up label printer according to claim 2, characterized in that: A gear shaft (15) is fixed on the printer body (2), and an intermediate gear (16) which is transmission-connected to the driving gear (10) is rotatably engaged on the gear shaft (15). The second output gear (12) is rotatably engaged on the gear shaft (15), and a first damping spring (17) is sleeved on the gear shaft (15), one end of which is connected to the intermediate gear (16), and the other end of the first damping spring (17) is connected to the second output gear (12).

4. The cover flip-up label printer according to claim 3, characterized in that: The printer body (2) is rotatably provided with a first double gear (18) and a second double gear (19); the driving gear (10) is meshed with the large gear of the first double gear (18); the small gear of the first double gear (18) is meshed with the large gear of the second double gear (19); the large gear of the second double gear (19) is meshed with the intermediate gear (16); and the first output gear (11) is meshed with the small gear of the second double gear (19).

5. The cover flip-up label printer according to claim 2, characterized in that: The second driven gear (14) is provided with a plurality of circumferentially evenly distributed limiting grooves (20), the carbon ribbon box (4) is provided with an elastic claw (21) that is inserted into the limiting groove (20), and the printer body (2) is provided with an unlocking structure for disengaging the elastic claw (21) on the carbon ribbon box (4) placed in the accommodating cavity (3) from the limiting groove (20).

6. The cover flip-up label printer according to claim 5, characterized in that: The unlocking structure comprises a limit stop edge (22) arranged in the printer body (2), a boss (23) is arranged on the elastic claw (21), and a guide slope is arranged on the boss (23). When the carbon ribbon box (4) is placed in the accommodating cavity (3), the limit stop edge (22) presses the guide slope to make the elastic claw (21) disengage from the limit groove (20).

7. The cover flip-up label printer according to claim 1, characterized in that: The carbon ribbon box (4) is provided with a first cover body (24) and a second cover body (25) which can be opened and closed, the first cover body (24) covers the carbon ribbon roller (8), the second cover body (25) covers the recovery roller (9), and the second cover body (25) is provided with a carbon ribbon guide part (26) for tensioning the carbon ribbon to the printing channel (5) when the second cover body (25) is closed.

8. The cover flip-up label printer according to claim 7, characterized in that: The first cover body (24) is rotatably mounted on the carbon ribbon box (4) via a first rotating shaft, the carbon ribbon box (4) is provided with a first arc groove, the first cover body (24) is provided with a second arc groove, when the first cover body (24) is closed, the first arc groove and the second arc groove form a first mounting hole, the carbon ribbon roller (8) is rotatably engaged in the first mounting hole, and the carbon ribbon box (4) is provided with a first elastic buckle (27) for buckling the first cover body (24) when the first cover body (24) is closed.

9. The cover flip-up label printer according to claim 7, characterized in that: The second cover body (25) is rotatably mounted on the carbon ribbon box (4) via a second rotating shaft, a third arc groove is provided on the carbon ribbon box (4), and a fourth arc groove is provided on the second cover body (25). When the second cover body (25) is closed, the third arc groove and the fourth arc groove form a second mounting hole, and the recovery roller (9) is rotatably engaged in the second mounting hole. The carbon ribbon guide portion (26) is disposed at one end of the second cover body (25) away from the second rotating shaft, and a second elastic buckle (28) is provided on the carbon ribbon box (4) for buckling the carbon ribbon guide portion (26) when the second cover body (25) is closed.

10. The cover flip-up label printer according to claim 1, characterized in that: The carbon ribbon roller (8) has a coaxially arranged first step hole (29) and a second step hole (30) located at the outer end of the first step hole (29); the aperture of the second step hole (30) is larger than the aperture of the first step hole (29); a second damping spring (31) is tightly fitted in the first step hole (29); the other end of the second damping spring (31) passes through the second step hole (30) and is connected to the carbon ribbon box (4).

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