CN108556489B

CN108556489B - Thermal printer core

Info

Publication number: CN108556489B
Application number: CN201810171786.1A
Authority: CN
Inventors: 王建立
Original assignee: NINGBO JINGXIN TECHNOLOGY CO LTD
Current assignee: NINGBO JINGXIN TECHNOLOGY CO LTD
Priority date: 2018-03-01
Filing date: 2018-03-01
Publication date: 2023-08-15
Anticipated expiration: 2038-03-01
Also published as: CN108556489A

Abstract

The utility model provides a thermal printer core, includes frame (1), beat printer head subassembly (3), rubber roll (2) and a paper drum (5), beat printer head subassembly (3) lower extreme and locate on frame (1) rotationally through first pivot (33), parallel first pivot (33) still are equipped with second pivot (44) on frame (1), can rotate on this second pivot (44) and be equipped with stirring piece (4), should stir piece (4) and include rotation portion (42) and by the outside portion (43) and stirring portion (41) that support of extending of rotation portion (42), foretell portion (43) of supporting can drive beat printer head subassembly (3) and draw close to rubber roll (2), foretell portion (41) of stirring stretch out frame (1) downwards. The pushing part is driven to rotate by applying force to the pushing part, so that the printing head component is lifted to be close to the rubber roller, and when paper jam or paper loading is needed, the force is applied to the pushing part reversely. Simple structure, simple operation.

Description

Thermal printer core

Technical Field

The utility model relates to a printer, in particular to a thermal printer which can be applied to printing of bills and labels.

Background

The existing bill or label printer is in a large number with a thermal printer, the basic structure of the thermal printer comprises a frame, a printing head assembly, a rubber roller and a paper rolling cylinder, a paper bin area is formed at one end of the frame, the printing head assembly is arranged on the frame, the rubber roller can be rotatably arranged on the frame and is close to the printing head assembly, a paper passing channel is formed between the rubber roller and the printing head assembly, the paper rolling cylinder can be rotatably arranged in the paper bin area, and printing paper is arranged on the paper rolling cylinder.

The related patent literature can refer to Chinese patent application publication No. 200910107839.4, which discloses a portable barcode label printer with a manual cutter (application publication No. CN 101905571A); reference may also be made to the chinese utility model patent label printer (issued notice CN 206406618U) having the patent number ZL201720357107.0

When the existing thermal printer is used for paper loading or paper jamming, the printing head assembly and the rubber roller are required to be separated so as to complete the paper loading or paper dismounting process, and the thermal printer is generally provided with two structures for realizing the separation, wherein one structure is provided with a separation structure, and the other structure is provided with the rubber roller which is arranged on a support capable of being separated, but the common separation structure is complex, the design is complex, and the operation is not very convenient; in addition, the widths of the existing paper winding cylinder and paper bin are fixed, if printing paper with different sizes needs to be replaced, different types of thermal printers are needed, the one-to-one correspondence is poor, the cost is high, and therefore improvement is needed.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a thermal printer core with simple print head assembly disconnection and convenient operation.

Another technical problem to be solved by the utility model is to provide a thermal printer core with an adjustable paper bin width.

The technical scheme adopted for solving the technical problems is as follows: a thermal printer cartridge comprising

A frame, one end of which is provided with a paper bin area;

the printing head assembly is arranged on the frame;

the rubber roller is rotatably arranged on the frame and is close to the printing head assembly, and a paper passing channel is formed between the rubber roller and the printing head assembly; and

the paper roll is rotatably arranged in the paper bin area,

the printing head assembly is characterized in that the lower end of the printing head assembly is rotatably arranged on the frame through a first rotating shaft, a second rotating shaft is further arranged on the frame in parallel with the first rotating shaft, a stirring piece is rotatably arranged on the second rotating shaft, the stirring piece comprises a rotating part, an abutting part and a stirring part, the abutting part extends outwards from the rotating part, the abutting part can drive the printing head assembly to be close to the rubber roller, the abutting part is separated from the printing head assembly, the printing head assembly is separated from the rubber roller, and the stirring part extends downwards out of the frame.

Further, the back of the printing head assembly is provided with an L-shaped backboard capable of rotating together with the printing head assembly, the L-shaped backboard comprises a connecting section and a vertical section perpendicular to the connecting section, the connecting section is connected with the lower end of the printing head assembly, a gap is formed between the vertical section and the printing head assembly, a pre-tightening spring is arranged in the gap, and the abutting part can abut against the back of the vertical section so as to drive the printing head assembly to approach the rubber roller.

Further, the front end face of the abutting part is a convex bending surface which can be abutted against the back face of the vertical section, and after the toggle piece rotates, the abutting part is separated from the back face of the vertical section, and then the vertical section swings downwards to be abutted against the rotating part.

The two sides of one end of the frame are respectively provided with a movable plate and a connecting plate, the paper bin area is formed between the movable plate and the connecting plate, the movable plate can transversely move relative to the connecting plate so as to adjust the gap width between the movable plate and the connecting plate, and two ends of the paper roll are respectively rotatably arranged on the inner sides of the movable plate and the connecting plate. The distance between the movable plate and the connecting plate can be adjusted, so that the same machine core can adapt to printing papers with different widths, multiple purposes are realized, and the cost is reduced.

The upper end of the frame is provided with a positioning rod, the lower end of the frame is provided with a guide rod, the upper end of the movable plate can be arranged on the positioning rod in a back-and-forth movement way through a detachable mechanism, and the lower end of the movable plate is provided with a guide hole matched with the guide rod in a guide way. The locating lever of upper end shirks the setting, and the guide bar of lower extreme realizes the direction, and the simple operation moves steadily.

Preferably, the detachable mechanism may comprise

The spanner comprises a connecting part, a buckling part and a pulling part, wherein the buckling part and the pulling part extend outwards from the connecting part, the connecting part can be rotationally arranged on the movable plate, the buckling part can be clamped on the positioning rod so as to position the movable plate on the positioning rod, the pulling part can be forced to separate from the positioning rod after being stressed, and

the torsional spring always forces the buckling part of the wrench to clamp the positioning rod.

The torsion spring is preferably arranged as follows: the connecting part is rotatably arranged on the movable plate through a shaft pin, the torsion spring is sleeved on the shaft pin, one end of the torsion spring abuts against the inner wall of the movable plate, and the other end of the torsion spring abuts against one side of the wrench part.

In order to fix the fastening part firmly, the following preferable arrangement is made: the positioning rod is provided with at least two positioning grooves along the length direction, and the buckling part is provided with a positioning part matched with the positioning grooves in a positioning way.

The movable plate is provided with a through hole for the positioning rod to pass through, the movable plate comprises a body and a guide disc which is outwards extended from the inner side of the body and is matched with the positioning rod in a guiding way, and the buckling part is positioned between the guide disc and the body.

The inside of the movable plate is provided with grooves for the two ends of the paper roll to be arranged, the two sides of the grooves are respectively provided with a spring piece, and one side of each spring piece opposite to the spring piece is convexly bent to form a limiting part for limiting the paper roll to be separated from the grooves. The paper roll can be immediately installed in place by pressing down on the limiting part, the spring piece is deformed when being slightly forced during taking out, the paper roll can be rapidly separated from the frame, the operation is convenient and quick, and the positioning is accurate.

Compared with the prior art, the utility model has the advantages that: the pushing part is driven to rotate by applying force to the pushing part, so that the printing head component is lifted to be close to the rubber roller, and when paper jam or paper loading is needed, the force is applied to the pushing part reversely. Simple structure, simple operation.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment.

Fig. 2 is a schematic diagram of the structure of fig. 1 after the printing paper is removed.

Fig. 3 is a combination view of the positioning rod, the detachable mechanism and the movable plate in fig. 1.

Fig. 4 is an exploded view of fig. 3.

Fig. 5 is a schematic structural view of the spring reed in fig. 4.

Fig. 6 is a schematic view of the space between the movable plate and the connecting plate after being reduced.

Fig. 7 is a schematic view of a part of the structure of an embodiment.

FIG. 8 is a state diagram of the trigger driving the printhead assembly toward the glue roller.

Fig. 9 is a state diagram of the printhead assembly when it is far from the glue roller.

Detailed Description

The utility model is described in further detail below with reference to the embodiments of the drawings.

Referring to fig. 1 and 2, the thermal printer core in this embodiment includes a frame 1, a print head assembly 3, a rubber roller 2, a paper roll 5, and a motor diagram, which are not shown in the drawing, wherein two sides of one end of the frame 1 are respectively provided with a movable plate 6 and a connecting plate 13, and a paper bin area is formed between the movable plate 6 and the connecting plate 13; the movable plate 6 can move transversely relative to the connecting plate 13 so as to adjust the gap width between the movable plate 6 and the connecting plate 13.

The printing head assembly 3 is arranged on the frame 1; the rubber roller 2 is rotatably arranged on the frame 1 and is close to the printing head assembly 3, a paper passing channel is formed between the rubber roller 2 and the printing head assembly 3, and an input gear 21 is arranged at one end of the rubber roller 2.

As shown in fig. 3 and 4, both ends of the paper roll 5 are rotatably provided inside the movable plate 6 and the connection plate 13, respectively. Specifically, the movable plate 6 has a groove 63 provided at both ends of the paper roll 5, and spring pieces 64 are provided at both sides of the groove 63, and as shown in fig. 5, a side opposite to each spring piece 64 is convexly curved to form a limiting portion 641 for limiting the separation of the paper roll 5 from the groove 63. The connection plate 13 is also provided with grooves and corresponding spring plates, which are arranged with reference to the movable plate 6. Thus, the paper roll 5 can be mounted in place immediately by pressing it down on the limiting portion 641, the spring piece 64 is deformed by a little force when taking out, and the paper roll 5 can be rapidly separated from the frame 1.

The motor is connected with an output gear diagram, which is not shown, the input end of the transmission gear set 13 is meshed with the output gear for transmission, and the output end of the transmission gear set 13 is meshed with the input gear 21 for transmission.

The upper end of the frame 1 is provided with a positioning rod 7, the lower end is provided with a guide rod 11 (shown in figure 2), the upper end of the movable plate 6 is movably arranged on the positioning rod 7 back and forth through a detachable mechanism, and the lower end is provided with a guide hole 62 in guide fit with the guide rod 11. The movable plate 6 is provided with a through hole for the positioning rod 7 to pass through,

as shown in fig. 3 and 4, the detachable mechanism in this embodiment includes a wrench 8 and a torsion spring 85, the wrench 8 includes a connection portion 81, a buckling portion 83 extending outward from the connection portion 81, and a pulling portion 82, the connection portion 81 is rotatably disposed on the movable plate 6, the buckling portion 83 can be clamped on the positioning rod 7 to position the movable plate 6 on the positioning rod 7, the pulling portion 82 can urge the buckling portion 83 to separate from the positioning rod 7 after being stressed,

the torsion spring 85 always forces the buckling part 83 of the wrench 8 to clamp the positioning rod 7. Specifically, the connecting portion 81 is rotatably disposed on the movable plate 6 through a shaft pin 84, and a torsion spring 85 is sleeved on the shaft pin 84, one end of the torsion spring abuts against the inner wall of the movable plate 6, and the other end abuts against one side of the wrench 8 portion.

The positioning rod 7 is formed with a plurality of positioning grooves 71 along the longitudinal direction, and the engaging portion 83 has positioning portions that are positioned in engagement with the positioning grooves 71.

In order to make the movement more stable and the clamping more stable, the movable plate 6 comprises a body 61 and a guide plate 65 which is outwards extended from the inner side of the body 61 and is in guide fit with the positioning rod 7, and the buckling part 83 is positioned between the guide plate 65 and the body 61.

In combination with the illustration of fig. 6, when the spanner is adjusted, as long as the pulling part of the spanner is pressed, the buckling part is separated from the positioning groove, and then the movable plate can be driven to move transversely along the positioning rod relative to the connecting plate, the plate hand part is loosened after the spanner is adjusted to a proper position, the buckling part is clamped with the corresponding positioning groove under the action of the torsion spring, and the movable plate is positioned on the positioning rod.

The lower end of the printhead assembly 3 in this embodiment is rotatably mounted to the frame 1 via a first pivot 33, as shown in fig. 7. As shown in fig. 8 and 9, the frame 1 is further provided with a second rotating shaft 44 parallel to the first rotating shaft 33, the second rotating shaft 44 is rotatably provided with a toggle member 4, the toggle member 4 includes a rotating portion 42, an abutting portion 43 extending outwards from the rotating portion 42, and a toggle portion 41, the abutting portion 43 can drive the printhead assembly 3 to approach the glue roller 2, the abutting portion 43 is separated from the printhead assembly 3, the printhead assembly 3 leaves the glue roller 2, the front end surface of the abutting portion 43 is a convex curved surface, and the toggle portion 41 extends downwards out of the frame 1.

The back of the printing head assembly 3 is provided with an L-shaped backboard 32 which can rotate together with the printing head assembly 3, the L-shaped backboard 32 comprises a connecting section 321 and a vertical section 322 which is perpendicular to the connecting section 321, the connecting section 321 is connected with the lower end of the printing head assembly 3, a gap is formed between the vertical section 322 and the printing head assembly 3, a pre-tightening spring 31 is arranged in the gap, and the abutting part 43 can abut against the back of the vertical section 322 so as to drive the printing head assembly 3 to approach the rubber roller 2.

Referring to fig. 8 and 9, in the initial state, the back surface of the vertical section abuts against the rotating portion, the abutting portion is driven to rotate by applying force to the poking portion, the curved surface of the abutting portion abuts against the back surface of the vertical section 322, so that when the printhead assembly 3 is lifted to approach the glue roller, and paper jams or needs to be loaded, the force is applied to the poking portion 41 in the opposite direction, the abutting portion 43 is separated from the back surface of the vertical section 322, the vertical section 322 swings downwards and abuts against the rotating portion 42, and the printhead assembly 3 is far away from the glue roller 2.

Claims

1. A thermal printer cartridge comprising

A frame (1) with a paper bin area formed at one end;

a print head assembly (3) provided on the frame (1);

the rubber roller (2) is rotatably arranged on the frame (1) and is close to the printing head assembly (3), and a paper passing channel is formed between the rubber roller (2) and the printing head assembly (3); and

a paper roll (5) rotatably provided in the paper bin area,

the printing head assembly is characterized in that the lower end of the printing head assembly (3) is rotatably arranged on the frame (1) through a first rotating shaft (33), a second rotating shaft (44) is further arranged on the frame (1) in parallel with the first rotating shaft (33), a stirring piece (4) is rotatably arranged on the second rotating shaft (44), the stirring piece (4) comprises a rotating part (42), an abutting part (43) and a stirring part (41) which extend outwards from the rotating part (42), the abutting part (43) can drive the printing head assembly (3) to be close to the rubber roll (2), the abutting part (43) is separated from the printing head assembly (3), the printing head assembly (3) is separated from the rubber roll (2), and the stirring part (41) downwards extends out of the frame (1);

the back of the printing head assembly (3) is provided with an L-shaped backboard (32) capable of rotating together with the printing head assembly (3), the L-shaped backboard (32) comprises a connecting section (321) and a vertical section (322) perpendicular to the connecting section (321), the connecting section (321) is connected with the lower end of the printing head assembly (3), a gap is formed between the vertical section (322) and the printing head assembly (3), a pre-tightening spring (31) is arranged in the gap, and the abutting part (43) can abut against the back of the vertical section (322) so as to drive the printing head assembly (3) to approach the rubber roller (2);

the front end surface of the abutting part (43) is a convex bending surface which can abut against the back surface of the vertical section (322), and after the poking piece (4) rotates, the abutting part (43) is separated from the back surface of the vertical section (322), and the vertical section (322) swings downwards to abut against the rotating part (42);

two sides of one end of the frame (1) are respectively provided with a movable plate (6) and a connecting plate (13), the paper bin area is formed between the movable plate (6) and the connecting plate (13), the movable plate (6) can transversely move relative to the connecting plate (13) so as to adjust the gap width between the movable plate (6) and the connecting plate (13), and two ends of the paper roll (5) are respectively rotatably arranged at the inner sides of the movable plate (6) and the connecting plate (13);

the upper end of the frame (1) is provided with a positioning rod (7), the lower end is provided with a guide rod (11), the upper end of the movable plate (6) is movably arranged on the positioning rod (7) back and forth through a detachable mechanism, and the lower end is provided with a guide hole (62) in guide fit with the guide rod (11);

the detachable mechanism comprises

A wrench (8) comprising a connecting part (81), a buckling part (83) extending outwards from the connecting part (81) and a pulling part (82), wherein the connecting part (81) can be rotatably arranged on the movable plate (6), the buckling part (83) can be clamped on the positioning rod (7) to position the movable plate (6) on the positioning rod (7), the pulling part (82) can cause the buckling part (83) to be separated from the positioning rod (7) after being stressed, and

a torsion spring (85) for always forcing the fastening part (83) of the wrench (8) to clamp the positioning rod (7);

the connecting part (81) is rotatably arranged on the movable plate (6) through a shaft pin (84), the torsion spring (85) is sleeved on the shaft pin (84) and one end of the torsion spring is abutted against the inner wall of the movable plate (6), and the other end of the torsion spring is abutted against one side of the wrench (8);

the positioning rod (7) is provided with at least two positioning grooves (71) along the length direction, and the buckling part (83) is provided with a positioning part which is matched with the positioning grooves (71) in a positioning way.

2. The thermal printer core according to claim 1, wherein the movable plate (6) has a through hole for the positioning rod (7) to pass through, the movable plate (6) includes a body (61) and a guiding disc (65) extending from the inner side of the body (61) to be in guiding fit with the positioning rod (7), and the fastening portion (83) is located between the guiding disc (65) and the body (61).

3. The thermal printer core according to claim 1, characterized in that the movable plate (6) has grooves (63) on the inner side for two ends of the paper roll (5), the two sides of the grooves (63) are provided with spring pieces (64), and the opposite side of each spring piece (64) is convexly curved to form a limiting part (641) for limiting the paper roll (5) from separating from the grooves (63).