CN214727565U - Cutting device and printer - Google Patents

Abstract

The utility model discloses a cutting device and printer, cutting device includes: a mounting member; fixing a knife; the cutter mechanism is arranged in the mounting piece in a sliding mode and is provided with a first transmission part and a second transmission part; the rotating piece is rotatably arranged on the cutter mechanism, a pushing part and a working part are arranged on the rotating piece, and a space is reserved between the working part and the second transmission part; a driving mechanism arranged in the mounting member, the driving mechanism being provided with a driving part; when the driving part rotates forwards, the driving part is matched with the first transmission part after rotating by a first angle; when the driving part rotates reversely, the driving part drives the pushing part to rotate by a second angle, the working part is in transmission fit with the second transmission part, and the first angle is smaller than the second angle. When the driving part rotates forwards, the cutter device realizes full cutting, and when the driving part rotates backwards, the cutter device realizes half cutting, so that the structure is simple, the transmission relation is simplified, the transmission is stable, and the manufacturing cost is reduced.

Description

Cutting device and printer

Technical Field

The utility model relates to a printer technical field, in particular to cutting device and printer.

Background

When printing label paper, the printer on the market adopts the mode of automatic half cutting and manual full cutting to cut label paper, and the operation is complicated. Although some printers in the market can realize the automatic full-cutting and half-cutting functions, the number of transmission assemblies is large, the transmission relationship is complex and unstable, and the manufacturing cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a cutting device, cutting device simple structure has simplified the transmission relation, has reduced manufacturing cost.

The utility model discloses still provide an use above-mentioned cutting device's printer.

According to the utility model discloses a cutting device of first aspect embodiment includes: a mounting member; a stationary knife fixed relative to the mounting; the cutter mechanism is arranged in the mounting piece in a sliding mode, the cutter mechanism is arranged opposite to the fixed cutter, and a first transmission part and a second transmission part are arranged on the cutter mechanism; the rotating piece is rotatably arranged on the cutter mechanism, a pushing part and a working part are arranged on the rotating piece, and a gap is reserved between the working part and the second transmission part; the driving mechanism is arranged in the mounting piece and is provided with a driving part which can rotate relative to the mounting piece; when the driving part rotates forwards, the driving part is matched with the first transmission part after rotating by a first angle; when the driving part rotates reversely, the driving part drives the pushing part to rotate by a second angle, the working part is in transmission fit with the second transmission part, and the first angle is smaller than the second angle.

According to the utility model discloses cutting device has following beneficial effect at least: the cutter mechanism is provided with the first transmission part and the second transmission part, and the driving part of the driving mechanism rotates forwards and backwards to control the moving stroke of the cutter mechanism, so that full cutting or half cutting is realized; when the driving part rotates forwards, the driving part is in transmission fit with the first transmission part after rotating by a first angle, and then the cutting knife mechanism is pushed to move towards the fixed knife; when the driving part rotates reversely, after the driving part rotates by a second angle, the working part is in transmission fit with the second transmission part so as to push the cutter mechanism to move towards the fixed cutter; because the first angle is smaller than the second angle, the moving stroke of the cutter mechanism when the driving part rotates in the forward direction is larger than the moving stroke of the cutter mechanism when the driving hook part rotates in the reverse direction. Therefore, when the driving part rotates forwards, the cutter device realizes full cutting, and when the driving part rotates backwards, the cutter device realizes half cutting, so that the structure is simple, the transmission relation is simplified, the transmission is stable, and the manufacturing cost is reduced.

According to some embodiments of the present invention, the cutter mechanism is provided with a first through hole and a groove communicated with the first through hole, the first transmission part is a first step surface at the inner lower part of the first through hole, the second transmission part is a second step surface at the inner lower part of the groove, the distance between the first step surface and the end part of the cutter mechanism close to the fixed knife is larger than the distance between the second step surface and the end part of the cutter mechanism close to the fixed knife, and the first step surface and the second step surface are arranged in parallel; the rotating part is connected with the cutter mechanism in a rotating mode, the pushing part and the working part are located in the groove, and at least one part of the pushing part can stretch into the first through hole along the communicating position of the groove and the first through hole.

According to some embodiments of the present invention, the rotating member is a circular plate, the pushing portion is a first protrusion fixedly connected to the circular plate, the first protrusion includes a first side surface, an upper end surface and a second side surface which are sequentially connected, and the working portion is an inclined surface connected to the second side surface; the first step face and be provided with between the recess can with first side looks butt's spacing face, spacing face can restrict the rotating member orientation first step face rotates, the rotating member orientation when the second step face rotates, the inclined plane can with the transmission cooperation of second step face.

According to some embodiments of the present invention, the cutter mechanism and the rotating member are provided with a reset member therebetween for driving the rotating member to reset.

According to some embodiments of the present invention, the cutter mechanism includes a sliding plate and a moving blade, the sliding plate is slidably connected to the mounting member, the moving blade is fixedly connected to the sliding plate, and the rotating member is rotatably connected to the sliding plate; the first through hole is formed in the sliding plate, a recessed portion communicated with the first through hole is formed in the sliding plate, a second through hole is formed in the moving blade, the first through hole and the recessed portion are both arranged in the second through hole, and the second through hole is matched with the recessed portion to form the groove.

According to some embodiments of the present invention, the sliding plate abuts against a side surface of the moving blade, the sliding plate is provided with a boss located outside the first through hole, and the boss abuts against an inner side wall of the second through hole; a first abutting part is arranged at one end of the sliding plate, which is far away from the fixed knife, a first positioning groove is formed between the first abutting part and the sliding plate, a first clamping position which is in clamping fit with the first positioning groove is arranged at one end of the moving knife, and the first abutting part abuts against one side surface of the moving knife; the sliding plate is provided with a second abutting part close to one end of the fixed knife, a second positioning groove is formed between the second abutting part and the sliding plate, a second clamping position matched with the second positioning groove in a clamping mode is arranged on the second through hole, and the second abutting part abuts against the other side face of the moving knife.

According to some embodiments of the present invention, the sliding plate is fixedly provided with at least one second protrusion, the mounting member is provided with a guide hole for inserting the second protrusion, and the second protrusion can slide in the guide hole.

According to some embodiments of the utility model, actuating mechanism include driving motor, with driving motor pivot fixed connection's worm and with worm gear of worm meshing, the worm wheel rotationally connect in the installed part, the drive part for eccentric set up in drive projection on the worm wheel.

According to the utility model discloses a some embodiments, be provided with on the installed part and be used for the installation driving motor's fixed through hole, fixed through hole's both sides correspond driving motor's both ends are provided with the location convex part respectively, at least one be provided with the locating hole of having seted up on the location convex part, driving motor is last be provided with the screw hole that the locating hole corresponds.

According to a second aspect embodiment of the present invention, a printer includes a cutting device according to the first aspect embodiment of the present invention.

According to the utility model discloses printer has following beneficial effect at least: the printer is provided with the cutting device, and the cutter mechanism is provided with a first transmission part, a second transmission part and a driving part of the driving mechanism to rotate forwards and backwards so as to control the moving stroke of the cutter mechanism and further realize full cutting or half cutting; when the driving part rotates forwards, the driving part is in transmission fit with the first transmission part after rotating by a first angle, and then the cutting knife mechanism is pushed to move towards the fixed knife; when the driving part rotates reversely, after the driving part rotates by a second angle, the working part is in transmission fit with the second transmission part so as to push the cutter mechanism to move towards the fixed cutter; because the first angle is smaller than the second angle, the moving stroke of the cutter mechanism when the driving part rotates in the forward direction is larger than the moving stroke of the cutter mechanism when the driving hook part rotates in the reverse direction. Therefore, when the driving part rotates forwards, the cutter device realizes full cutting, and when the driving part rotates backwards, the cutter device realizes half cutting, so that the structure is simple, the transmission relation is simplified, the transmission is stable, and the manufacturing cost is reduced.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic view of a first view structure of a cutting device according to an embodiment of the present invention;

fig. 2 is a schematic view of a second view structure of the cutting device according to the embodiment of the present invention;

fig. 3 is an exploded view of a cutting device according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of the cutting mechanism, the stationary knife, and the driving portion according to the embodiment of the present invention;

fig. 5 is an exploded view of the cutting mechanism according to an embodiment of the present invention;

fig. 6 is a schematic structural view of a rotating member according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a driving mechanism according to an embodiment of the present invention;

reference numerals:

the mounting piece 10, the guide hole 11, the fixing through hole 12, the positioning convex part 121, the first shell 13 and the second shell 14;

a stationary knife 20;

a cutter mechanism 30, a first transmission part 31, a second transmission part 32,

The first through hole 33, the groove 34, the limiting surface 35, the sliding plate 36, the boss 361, the first abutting part 362, the first positioning groove 363, the second abutting part 364, the second positioning groove 365, the second projection 366, the moving knife 37, the second through hole 371, the second clamping position 3711 and the first clamping position 372;

the rotating member 40, the pushing part 41, the first side surface 411, the upper end surface 412, the second side surface 413 and the working part 42;

a driving mechanism 50, a driving part 51, a driving motor 52, a worm 53, a worm wheel 54 and a reset piece 60.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper and lower directions, is the orientation or positional relationship shown on the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore should not be construed as limiting the present invention.

In the description of the present invention, if there are first and second descriptions for distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

As shown in fig. 1 to 6, a cutting device according to an embodiment of the first aspect of the present invention includes: a mounting member 10; the fixed knife 20, the fixed knife 20 is fixed relative to the mounting piece; the cutter mechanism 30 is slidably arranged in the mounting piece 10, the cutter mechanism 30 is arranged opposite to the fixed cutter 20, and a first transmission part 31 and a second transmission part 32 are arranged on the cutter mechanism 30; the rotating piece 40 is rotatably arranged on the cutter mechanism 30, a pushing part 41 and a working part 42 are arranged on the rotating piece 40, and a gap is reserved between the working part and the second transmission part 32; a driving mechanism 50 arranged in the mounting member 10, wherein the driving mechanism 50 is provided with a driving part 51 which can rotate relative to the mounting member 10; when the driving part 51 rotates forward, the driving part 51 is matched with the first transmission part 31 after rotating by a first angle; when the driving portion 51 rotates reversely, the driving portion 51 drives the pushing portion 41 to rotate by a second angle, and then the working portion 42 is in transmission fit with the second transmission portion 32, and the first angle is smaller than the second angle.

According to the cutting device provided by the embodiment of the utility model, the cutter mechanism 30 is provided with the first transmission part 31, the second transmission part 32 and the driving part 51 of the driving mechanism to rotate forwards and backwards so as to control the moving stroke of the cutter mechanism 30, and then full cutting or half cutting is realized; when the driving part 51 rotates in the forward direction, the driving part 51 is in transmission fit with the first transmission part 31 after rotating by a first angle, and then the cutting knife mechanism 30 is pushed to move towards the fixed knife 20; when the driving part 51 rotates reversely, after the driving part 51 drives the pushing part 41 to rotate by a second angle, the working part 42 is in transmission fit with the second transmission part 32 to push the cutter mechanism 30 to move towards the fixed cutter 20; since the first angle is smaller than the second angle, the moving stroke of the cutter mechanism 30 when the driving part 51 rotates in the forward direction is larger than the moving stroke of the cutter mechanism 30 when the driving part 51 rotates in the reverse direction. Therefore, when the driving part 51 rotates in the forward direction, the cutter device realizes full cutting, and when the driving part 51 rotates in the reverse direction, the cutter device realizes half cutting, so that the structure is simple, the transmission relation is simplified, the transmission is stable, and the manufacturing cost is reduced.

As shown in fig. 3 to 6, in some embodiments of the present invention, the cutter mechanism 30 is provided with a first through hole 33 and a groove 34 communicated with the first through hole 33, the first transmission portion 31 is a first step surface at a lower portion in the first through hole 33, the second transmission portion 32 is a second step surface at a lower portion in the groove 34, a distance between the first step surface and an end portion of the cutter mechanism 30 close to the fixed knife 20 is greater than a distance between the second step surface and an end portion of the cutter mechanism 30 close to the fixed knife 20, and the first step surface and the second step surface are arranged in parallel; the rotating member 40 is rotatably connected with the cutter mechanism 30, the pushing portion 41 and the working portion 42 are both located in the groove 34, and at least a part of the pushing portion 41 can extend into the first through hole 33 along the communication position of the groove 34 and the first through hole 33. By adopting the structure, when the cutting device is used for full cutting, the driving part 51 rotates in the positive direction, the driving part 51 rotates to a first angle and then is in transmission fit with the first step surface, the cutter mechanism 30 is pushed to move towards the fixed cutter 20, and the pushing part 41 of the rotating piece 40 does not rotate at the moment; when the cutting device is half-cut, the driving part 51 rotates reversely until the pushing part 41 rotates to a second angle, and then the working part 42 is in transmission fit with the second step surface, so as to push the cutter mechanism 30 to move towards the fixed cutter 20.

As shown in fig. 3 to 6, in some embodiments of the present invention, the rotating member 40 is a circular plate, the pushing portion 41 is a first protrusion fixedly connected to the circular plate, the first protrusion includes a first side surface 411, an upper end surface 412 and a second side surface 413 connected in sequence, and the working portion 42 is an inclined surface connected to the second side surface 413; a limiting surface 35 which can be abutted against the first side surface 411 is arranged between the first step surface and the groove 34, the limiting surface 35 can limit the rotating piece 40 to rotate towards the first step surface, and when the rotating piece 40 rotates towards the second step surface, the inclined surface can be in transmission fit with the second step surface. By adopting the structure, when the cutting device is used for full cutting, the first side surface 411 is abutted against the limiting surface 35, the driving part 51 rotates in the forward direction, the pushing part 41 of the rotating piece 40 does not rotate at the moment, and the driving part 51 rotates to a first angle and then is in transmission fit with the first step surface, so that the cutting knife mechanism 30 is pushed to move towards the fixed knife 20; when the cutting device is half-cut, the driving part 51 rotates reversely to push the pushing part 41 to rotate to a second angle, the inclined surface is in transmission fit with the second step surface, and then the cutter mechanism 30 is pushed to move towards the fixed cutter 20.

As shown in fig. 3, in some embodiments of the present invention, a reset member 60 for driving the reset of the rotating member 40 is disposed between the cutter mechanism 30 and the rotating member 40. After half-cutting, the rotating member 40 is allowed to automatically restore the home position by the restoring member 60. It should be noted that the reset member 60 is a torsion spring, the torsion spring is located in the groove 34, one end of the torsion spring is connected to the cutter mechanism 30, and the other end of the torsion spring is connected to the rotating member 40.

It is understood that, as shown in fig. 3 to 5, in some embodiments of the present invention, the cutter mechanism 30 includes a sliding plate 36 and a moving blade 37, the sliding plate 36 is slidably connected to the mounting member 10, the moving blade 37 is fixedly connected to the sliding plate 36, and the rotating member 40 is rotatably connected to the sliding plate 36; wherein, first through-hole 33 is seted up on sliding plate 36, is provided with the depressed part with first through-hole 33 intercommunication on sliding plate 36, is provided with second through-hole 371 on the walking sword 37, and first through-hole 33, depressed part all set up in second through-hole 371, and second through-hole 371 and depressed part cooperate in order to form recess 34, and simple structure is compact, and the installation is reliable.

As shown in fig. 3, 4 and 5, in some embodiments of the present invention, the sliding plate 36 abuts against a side surface of the moving blade 37, a boss 361 located outside the first through hole 33 is provided on the sliding plate 36, and the boss 361 abuts against an inner side wall of the second through hole 371; a first abutting part 362 is arranged at one end of the sliding plate 36 far away from the fixed knife 20, a first positioning slot 363 is formed between the first abutting part 362 and the sliding plate 36, a first clamping position 372 clamped and matched with the first positioning slot 363 is arranged at one end of the moving knife 37, and the first abutting part 362 abuts against one side face of the moving knife 37; a second abutting portion 364 is disposed on one end of the sliding plate 36 close to the fixed blade 20, a second positioning groove 365 is formed between the second abutting portion 364 and the sliding plate 36, a second clamping position 3711 clamped and engaged with the second positioning groove 365 is disposed on the second through hole 371, and the second abutting portion 364 abuts against the other side surface of the moving blade 37. Adopt above-mentioned structure, through the cooperation of first constant head tank 363 and first joint position 372, second constant head tank 365 and the cooperation of second joint position 3711 joint have avoided the relative drunkenness of feed 37 and sliding plate 36, connect stably, simple structure, reasonable in design, and the dismouting of being convenient for.

Of course, in some embodiments, the moving blade 37 and the sliding plate 36 may also be detachably connected by bolts, which still has the above-mentioned effects, and is not limited herein.

As shown in fig. 2, in some embodiments of the present invention, at least one second protrusion 366 is fixedly disposed on the sliding plate 36, a guiding hole 11 is disposed on the mounting member 10 for the second protrusion 366 to be inserted, and the second protrusion 366 can slide relative to the guiding hole 11. With the above-described structure, the sliding plate 36 slides along the guide hole 11 by the second projection 366 to move relative to the mounting member 10, and the movement is stable and functions as a guide. Of course, in some embodiments, the guiding hole 11 may also be disposed on the sliding plate 36, and the second protrusion 366 may also be disposed on the mounting member 10, which still has the above-mentioned effects, and is not limited herein.

It can be understood that, as shown in fig. 1, fig. 2, fig. 3 and fig. 7, in some embodiments of the present invention, the driving mechanism 50 includes a driving motor 52, a worm 53 fixedly connected to the rotating shaft of the driving motor 52, and a worm wheel 54 engaged with the worm 53, the worm wheel 54 is rotatably connected to the mounting member 10, the driving portion 51 is a driving boss eccentrically disposed on the worm wheel 54, and the driving mechanism has a simple structure, a smooth and reliable transmission, and low noise. Of course, in some embodiments, the driving mechanism 50 may also be a gear driving device, or other structures, which are not limited herein.

It should be noted that, in some embodiments of the present invention, a cam is disposed on the surface of the worm wheel 54, the cam has a trigger end protruding outwards, a detection switch is disposed on the cam, the trigger end of the cam completes the switch action of moving the knife 37 to and fro by one stroke by pressing a switch arm of the detection switch, that is, the worm wheel 54 rotates for one circle, and the moving knife 37 is linked to complete one round and forth movement.

The utility model discloses an in some embodiments, be provided with the fixed through hole 12 that is used for installing driving motor 52 on the installed part 10, the both ends that the both sides of fixed through hole 12 correspond driving motor 52 are provided with location convex part 121 respectively, are provided with on at least one location convex part 121 and have seted up the locating hole, are provided with the screw hole that corresponds with the locating hole on the driving motor 52, and simple structure is convenient for carry out the dismouting to driving motor 52.

It will be appreciated that, as shown in fig. 1-3, in some embodiments of the present invention, the mounting member 10 includes a first housing 13 and a second housing 14, the first housing 13 being detachably connected to the second housing 14 by fasteners such as screws. With the above structure, the first housing 13 and the second housing 14 are detachably connected, and the structure is simple, so that the components inside the mounting member 10 can be conveniently dismounted and maintained.

According to a second aspect embodiment of the present invention, a printer includes a cutting device according to the first aspect embodiment of the present invention.

According to the printer provided with the cutting device provided by the embodiment of the utility model, the cutter mechanism 30 is provided with the first transmission part 31 and the second transmission part 32, and the driving part 51 of the driving mechanism rotates forwards and backwards to control the moving stroke of the cutter mechanism 30, so that full cutting or half cutting is realized; when the driving part 51 rotates in the forward direction, the driving part 51 is in transmission fit with the first transmission part 31 after rotating by a first angle, and then the cutting knife mechanism 30 is pushed to move towards the fixed knife 20; when the driving part 51 rotates reversely, after the driving part 51 drives the pushing part 41 to rotate by a second angle, the working part 42 is in transmission fit with the second transmission part 32 to push the cutter mechanism 30 to move towards the fixed cutter 20; since the first angle is smaller than the second angle, the moving stroke of the cutter mechanism 30 when the driving part 51 rotates in the forward direction is larger than the moving stroke of the cutter mechanism 30 when the driving part 51 rotates in the reverse direction. Therefore, when the driving part 51 rotates in the forward direction, the cutter device realizes full cutting, and when the driving part 51 rotates in the reverse direction, the cutter device realizes half cutting, so that the structure is simple, the transmission relation is simplified, the transmission is stable, and the manufacturing cost is reduced.

The utility model discloses a theory of operation: the driving part 51 rotates forward to be matched with the first transmission part 31 in a transmission way, and the driving part 51 rotates reversely to be matched with the pushing part 41, the working part 42 and the second transmission part 32, so that the moving stroke of the walking knife 37 is controlled, and then full cutting or half cutting is realized.

When the driving motor 52 drives the worm 53 to rotate, then the worm 53 drives the worm wheel 54 to rotate in the forward direction, the first side surface 411 abuts against the limiting surface 35, at this time, the pushing part 41 of the rotating part 40 does not rotate, the driving part 51 rotates to a first angle and then is in transmission fit with the first step surface, and then the cutter mechanism 30 is pushed to move towards the fixed cutter 20, so that full cutting is realized;

when the driving motor 52 drives the worm 53 to rotate, then the worm 53 drives the worm wheel 54 to rotate reversely, the driving part 51 rotates reversely to push the pushing part 41 to rotate for a second angle, the inclined surface is in transmission fit with the second step surface, then the cutter mechanism 30 is pushed to move towards the fixed cutter 20, half-cutting is completed, and the rotating part 40 is reset through the resetting part 60.

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

The invention is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the invention, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.

Claims (10)

1. Cutting device, its characterized in that includes:

a mounting (10);

a stationary knife (20), the stationary knife (20) being fixed relative to the mounting;

the cutter mechanism (30) is slidably arranged in the mounting piece (10), the cutter mechanism (30) is arranged opposite to the fixed cutter (20), and a first transmission part (31) and a second transmission part (32) are arranged on the cutter mechanism (30);

the rotating piece (40) is rotatably arranged on the cutter mechanism (30), a pushing part (41) and a working part (42) are arranged on the rotating piece (40), and a gap is reserved between the working part and the second transmission part (32);

a drive mechanism (50) provided in the mounting member (10), the drive mechanism (50) being provided with a drive portion (51) rotatable relative to the mounting member (10);

when the driving part (51) rotates forwards, the driving part (51) is matched with the first transmission part (31) after rotating for a first angle; when drive division (51) antiport, drive division (51) drive push portion (41) are after rotating the second angle, work portion (42) with second transmission portion (32) transmission cooperation, first angle is less than the second angle.

2. The cutting device according to claim 1, wherein the cutter mechanism (30) is provided with a first through hole (33) and a groove (34) communicated with the first through hole (33), the first transmission part (31) is a first step surface at the inner lower part of the first through hole (33), the second transmission part (32) is a second step surface at the inner lower part of the groove (34), the distance between the first step surface and the end part of the cutter mechanism (30) close to the fixed knife (20) is larger than the distance between the second step surface and the end part of the cutter mechanism (30) close to the fixed knife (20), and the first step surface and the second step surface are arranged in parallel;

the rotating piece (40) is rotationally connected with the cutter mechanism (30), the pushing portion (41) and the working portion (42) are both located in the groove (34), and at least one part of the pushing portion (41) can extend into the first through hole (33) along the communication position of the groove (34) and the first through hole (33).

3. The cutting device according to claim 2, characterized in that the rotating member (40) is a circular plate, the pushing portion (41) is a first projection fixedly connected with the circular plate, the first projection comprises a first side surface (411), an upper end surface (412) and a second side surface (413) which are connected in sequence, and the working portion (42) is an inclined surface connected with the second side surface (413);

first step face with be provided with between recess (34) can with spacing face (35) of first side (411) looks butt, spacing face (35) can restrict revolving part (40) orientation first step face rotates, revolving part (40) orientation during second step face rotates, the inclined plane can with second step face transmission cooperation.

4. A cutting device according to claim 3, wherein a return member (60) is provided between the cutter mechanism (30) and the rotary member (40) for returning the rotary member (40).

5. The cutting device according to claim 3, wherein the cutter mechanism (30) comprises a sliding plate (36) and a moving blade (37), the sliding plate (36) is slidably connected with the mounting member (10), the moving blade (37) is fixedly connected with the sliding plate (36), and the rotating member (40) is rotatably connected with the sliding plate (36);

the first through hole (33) is formed in the sliding plate (36), a recessed portion communicated with the first through hole (33) is formed in the sliding plate (36), a second through hole (371) is formed in the moving blade (37), the first through hole (33) and the recessed portion are formed in the second through hole (371), and the second through hole (371) and the recessed portion are matched to form the groove (34).

6. The cutting device according to claim 5, wherein the sliding plate (36) abuts against one side surface of the movable blade (37), a boss (361) positioned outside the first through hole (33) is arranged on the sliding plate (36), and the boss (361) abuts against the inner side wall of the second through hole (371);

a first abutting part (362) is arranged at one end, far away from the fixed knife (20), of the sliding plate (36), a first positioning groove (363) is formed between the first abutting part (362) and the sliding plate (36), a first clamping position (372) in clamping fit with the first positioning groove (363) is arranged at one end of the moving knife (37), and the first abutting part (362) abuts against one side face of the moving knife (37);

a second abutting part (364) is arranged at one end, close to the fixed knife (20), of the sliding plate (36), a second positioning groove (365) is formed between the second abutting part (364) and the sliding plate (36), a second clamping position (3711) matched with the second positioning groove (365) in a clamping mode is arranged on the second through hole (371), and the second abutting part (364) abuts against the other side face of the moving knife (37).

7. The cutting device according to claim 5, wherein at least one second projection (366) is fixedly arranged on the sliding plate (36), a guide hole (11) for inserting the second projection (366) is arranged on the mounting piece (10), and the second projection (366) can slide relative to the guide hole (11).

8. The cutting device according to claim 1, characterized in that the driving mechanism (50) comprises a driving motor (52), a worm (53) fixedly connected with the rotating shaft of the driving motor (52), and a worm wheel (54) meshed with the worm (53), the worm wheel (54) is rotatably connected to the mounting part (10), and the driving part (51) is a driving convex column eccentrically arranged on the worm wheel (54).

9. The cutting device according to claim 8, wherein the mounting member (10) is provided with a fixing through hole (12) for mounting the driving motor (52), two sides of the fixing through hole (12) are respectively provided with a positioning convex portion (121) corresponding to two ends of the driving motor (52), at least one positioning convex portion (121) is provided with a positioning hole, and the driving motor (52) is provided with a threaded hole corresponding to the positioning hole.

10. Printer characterized in that it comprises a cutting device according to any one of claims 1 to 9.

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